v6.0.1

Same as v6.0.0.

Due to a problem tag v6.0.0 was replaced. This isn't a good practice and affect
developers that started using it in the short timeframe. Submitting a new
release with the same content is the best way to fix this.

Bug:https://github.com/ArthurSonzogni/FTXUI/issues/1017
Bug:https://github.com/ArthurSonzogni/FTXUI/issues/1019

.clang-tidy

@@ -1,21 +1,34 @@
 ---
 Checks: "*,
+        -*-macro-usage,
+        -*-magic-numbers,
+        -*-narrowing-conversions
+        -*-unnecessary-value-param,
+        -*-uppercase-literal-suffix,
         -abseil-*,
         -altera-*,
         -android-*,
+        -bugprone-easily-swappable-parameters,
+        -cppcoreguidelines-non-private-member-variables-in-classes,
+        -cppcoreguidelines-pro-type-union-access,
         -fuchsia-*,
         -google-*,
+        -hicpp-signed-bitwise,
         -llvm*,
-        -modernize-use-trailing-return-type,
-        -zircon-*,
-        -readability-else-after-return,
-        -readability-static-accessed-through-instance,
-        -readability-avoid-const-params-in-decls,
-        -cppcoreguidelines-non-private-member-variables-in-classes,
+        -misc-no-recursion,
         -misc-non-private-member-variables-in-classes,
         -modernize-use-nodiscard,
-        -misc-no-recursion,
+        -modernize-use-trailing-return-type,
+        -readability-avoid-const-params-in-decls,
+        -readability-else-after-return,
+        -readability-identifier-length,
         -readability-implicit-bool-conversion,
+        -readability-non-const-parameter,
+        -readability-simplify-boolean-expr,
+        -readability-static-accessed-through-instance,
+        -readability-use-anyofallof,
+        -readability-avoid-nested-conditional-operator,
+        -zircon-*,
 "
 WarningsAsErrors: ''
 HeaderFilterRegex: ''

.github/workflows/build.yaml

@@ -2,14 +2,12 @@ name: Build
 
 on:
   create:
-    tags:
-      -v*
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
 
 jobs:
   test:
@@ -21,7 +19,6 @@ jobs:
           - name: Linux GCC
             os: ubuntu-latest
             compiler: gcc
-            gcov_executable: gcov
 
           - name: Linux Clang
             os: ubuntu-latest
@@ -39,8 +36,12 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
+      - name: Get number of CPU cores
+        uses: SimenB/github-actions-cpu-cores@v1
+        id: cpu-cores
+
       - name: "Checkout repository"
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: "Setup Cpp"
         uses: aminya/setup-cpp@v1
@@ -49,9 +50,9 @@ jobs:
           vcvarsall: ${{ contains(matrix.os, 'windows' )}}
           cmake: true
           ninja: true
-          clangtidy: true
+          clangtidy: false
           cppcheck: false
-          gcovr: true
+          gcovr: "5.0"
           opencppcoverage: true
 
       # make sure coverage is only enabled for Debug builds, since it sets -O0
@@ -61,23 +62,30 @@ jobs:
           cmake -S .
           -B ./build
           -DCMAKE_BUILD_TYPE:STRING=Debug
+          -DCMAKE_BUILD_PARALLEL_LEVEL=${{ steps.cpu-cores.outputs.count }}
           -DFTXUI_ENABLE_COVERAGE:BOOL=ON
           -DFTXUI_BUILD_DOCS:BOOL=OFF
           -DFTXUI_BUILD_EXAMPLES:BOOL=ON
           -DFTXUI_BUILD_TESTS:BOOL=ON
           -DFTXUI_BUILD_TESTS_FUZZER:BOOL=OFF
-          -DFTXUI_ENABLE_INSTALL:BOOL=ON ;
+          -DFTXUI_ENABLE_INSTALL:BOOL=ON
+          -DFTXUI_DEV_WARNINGS:BOOL=ON ;
 
       - name: "Build"
         run: >
           cmake
           --build ./build
 
-      - name: Unix - Test and coverage
+      - name: Unix - Test
         if: runner.os != 'Windows'
         working-directory: ./build
         run: >
           ctest -C Debug --rerun-failed --output-on-failure;
+
+      - name: Unix - coverage
+        if: matrix.gcov_executable != ''
+        working-directory: ./build
+        run: >
           gcovr
           -j ${{env.nproc}}
           --delete
@@ -96,7 +104,7 @@ jobs:
           --gcov-executable '${{ matrix.gcov_executable }}';
 
       - name: Windows - Test and coverage
-        if: runner.os == 'Windows'
+        if: runner.os == 'Windows' && false
         working-directory: ./build
         run: >
           OpenCppCoverage.exe
@@ -106,7 +114,7 @@ jobs:
           ctest -C Debug --rerun-failed --output-on-failure;
 
       - name: Publish to codecov
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v3
         with:
           flags: ${{ runner.os }}
           name: ${{ runner.os }}-coverage
@@ -144,8 +152,12 @@ jobs:
             asset_path: build/ftxui*Win64*
     runs-on: ${{ matrix.os }}
     steps:
+      - name: Get number of CPU cores
+        uses: SimenB/github-actions-cpu-cores@v1
+        id: cpu-cores
+
       - name: "Checkout repository"
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: "Install cmake"
         uses: lukka/get-cmake@latest
@@ -156,12 +168,15 @@ jobs:
           cd build;
           cmake ..
           -DCMAKE_BUILD_TYPE=Release
+          -DCMAKE_BUILD_PARALLEL_LEVEL=${{ steps.cpu-cores.outputs.count }}
           -DFTXUI_BUILD_DOCS=OFF
           -DFTXUI_BUILD_EXAMPLES=OFF
           -DFTXUI_BUILD_TESTS=OFF
           -DFTXUI_BUILD_TESTS_FUZZER=OFF
-          -DFTXUI_ENABLE_INSTALL=ON;
+          -DFTXUI_ENABLE_INSTALL=ON
+          -DFTXUI_DEV_WARNINGS=ON ;
           cmake --build . --target package;
+
       - uses: shogo82148/actions-upload-release-asset@v1
         with:
           upload_url: ${{ needs.release.outputs.upload_url }}
@@ -169,11 +184,11 @@ jobs:
           overwrite: true
   
   documentation:
-    needs: package
+    if: github.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
     steps:
       - name: "Checkout repository"
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: "Install cmake"
         uses: lukka/get-cmake@latest
@@ -190,9 +205,26 @@ jobs:
         run: >
           mkdir build;
           cd build;
-          emcmake cmake ..;
+          emcmake cmake ..
+          -DCMAKE_BUILD_TYPE=Release
+          -DFTXUI_BUILD_DOCS=ON
+          -DFTXUI_BUILD_EXAMPLES=ON
+          -DFTXUI_BUILD_TESTS=OFF
+          -DFTXUI_BUILD_TESTS_FUZZER=OFF
+          -DFTXUI_ENABLE_INSTALL=OFF
+          -DFTXUI_DEV_WARNINGS=ON ;
           cmake --build . --target doc;
-          rsync -amv --include='*/' --include='*.html' --include='*.js' --include='*.wasm' --exclude='*' examples doc/doxygen/html;
+          cmake --build . ;
+          rsync -amv
+          --include='*/'
+          --include='*.html'
+          --include='*.css'
+          --include='*.mjs'
+          --include='*.js'
+          --include='*.wasm'
+          --exclude='*'
+          examples
+          doc/doxygen/html;
 
       - name: "Deploy"
         uses: peaceiris/actions-gh-pages@v3

.gitignore

@@ -0,0 +1,62 @@
+# Ignore all the files, except the ones we expect.
+# See https://jasonstitt.com/gitignore-whitelisting-patterns
+*
+!*/
+
+# Ignore build directories generated by default MSVC CMake integration
+# (otherwise causes terribly slow indexing)
+out/
+
+# Allowed top-level files:
+!.clang-format
+!.clang-tidy
+!.gitignore
+!CHANGELOG.md
+!CMakeLists.txt
+!LICENSE
+!README.md
+!codecov.yml
+!flake.lock
+!flake.nix
+!ftxui.pc.in
+!iwyu.imp
+
+# .github directory:
+!.github/**/*.yaml
+!.github/**/*.yml
+
+# cmake directory:
+!cmake/**/*.in
+!cmake/**/*.cmake
+
+# doc directory:
+!doc/**/Doxyfile.in
+!doc/**/*.txt
+!doc/**/*.css
+!doc/**/*.html
+!doc/**/*.xml
+!doc/**/*.md
+
+# examples directory:
+!examples/**/*.cpp
+!examples/**/*.css
+!examples/**/*.hpp
+!examples/**/*.html
+!examples/**/*.html.disabled
+!examples/**/*.ipp
+!examples/**/*.js
+!examples/**/*.mjs
+!examples/**/*.py
+!examples/**/*.txt
+
+# include directory:
+!include/ftxui/**/*.hpp
+!include/ftxui/**/*.cpp
+
+# src directory:
+!src/ftxui/**/*.hpp
+!src/ftxui/**/*.cpp
+
+# tools directory:
+!tools/**/*.sh
+!tools/**/*.cpp

CHANGELOG.md

@@ -1,8 +1,230 @@
 Changelog
 =========
 
-current (development) 
----------------------
+6.0.1 (2025-03-28)
+-----
+
+Same as v6.0.0.
+
+Due to a problem tag v6.0.0 was replaced. This isn't a good practice and affect
+developers that started using it in the short timeframe. Submitting a new
+release with the same content is the best way to fix this.
+
+See #1017 and #1019.
+
+6.0.0 (2025-03-23)
+-----
+
+### Component
+- Feature: Add support for raw input. Allowing more keys to be detected.
+- Feature: Add `ScreenInteractive::ForceHandleCtrlC(false)` to allow component
+  to fully override the default `Ctrl+C` handler.
+- Feature: Add `ScreenInteractive::ForceHandleCtrlZ(false)` to allow component
+  to fully override the default `Ctrl+Z` handler.
+- Feature: Add `Mouse::WeelLeft` and `Mouse::WeelRight` events on supported
+  terminals.
+- Feature: Add `Event::DebugString()`.
+- Feature: Add support for `Input`'s insert mode. Add `InputOption::insert`
+  option. Added by @mingsheng13.
+- Feature: Add `DropdownOption` to configure the dropdown. See #826.
+- Feature: Add support for Selection. Thanks @clement-roblot. See #926.
+  - See `ScreenInteractive::GetSelection()`.
+  - See `ScreenInteractive::SelectionChange(...)` listener.
+- Bugfix/Breaking change: `Mouse transition`:
+  - Detect when the mouse move, as opposed to being pressed.
+    The Mouse::Moved motion was added.
+  - Dragging the mouse with the left button pressed now avoids activating
+    multiple checkboxes.
+  - A couple of components are now activated when the mouse is pressed,
+  as opposed to being released.
+  This fixes: https://github.com/ArthurSonzogni/FTXUI/issues/773
+  This fixes: https://github.com/ArthurSonzogni/FTXUI/issues/792
+- Bugfix: mouse.control is now reported correctly.
+- Feature: Add `ScreenInteractive::FullscreenPrimaryScreen()`. This allows
+  displaying a fullscreen component on the primary screen, as opposed to the
+  alternate screen.
+- Bugfix: `Input` `onchange` was not called on backspace or delete key.
+  Fixed by @chrysante in chrysante in PR #776.
+- Bugfix: Propertly restore cursor shape on exit. See #792.
+- Bugfix: Fix cursor position in when in the last column. See #831.
+- Bugfix: Fix `ResizeableSplit` keyboard navigation. Fixed by #842.
+- Bugfix: Fix `Menu` focus. See #841
+- Feature: Add `ComponentBase::Index()`. This allows to get the index of a
+  component in its parent. See #932
+- Feature: Add `EntryState::index`. This allows to get the index of a menu entry.
+  See #932
+- Feature: Add `SliderOption::on_change`. This allows to set a callback when the
+  slider value changes. See #938.
+- Bugfix: Handle `Dropdown` with no entries.
+- Bugfix: Fix crash in `LinearGradient` due to float precision and an off-by-one
+          mistake. See #998.
+
+### Dom
+- Feature: Add `italic` decorator. For instance:
+  ```cpp
+  auto italic_text = text("Italic text") | italic;
+  ```
+  ```cpp
+  auto italic_text = italic(text("Italic text"));
+  ```
+  Proposed by @kenReneris in #1009.
+- Feature: Add `hscroll_indicator`. It display an horizontal indicator
+  reflecting the current scroll position. Proposed by @ibrahimnasson in
+  [issue 752](https://github.com/ArthurSonzogni/FTXUI/issues/752)
+- Feature: Add `extend_beyond_screen` option to `Dimension::Fit(..)`, allowing
+  the element to be larger than the screen. Proposed by @LordWhiro. See #572 and
+  #949.
+- Feature: Add support for Selection. Thanks @clement-roblot. See #926.
+  - See `selectionColor` decorator.
+  - See `selectionBackgroundColor` decorator.
+  - See `selectionForegroundColor` decorator.
+  - See `selectionStyle(style)` decorator.
+  - See `selectionStyleReset` decorator.
+- Breaking change: Change how "focus"/"select" are handled. This fixes the
+  behavior.
+- Breaking change: `Component::OnRender()` becomes the method to override to
+  render a component. This replaces `Component::Render()` that is still in use
+  to call the rendering method on the children. This change allows to fix a
+  couple of issues around focus handling.
+
+### Screen
+- Feature: Add `Box::IsEmpty()`.
+- Feature: Color transparency
+    - Add `Color::RGBA(r,g,b,a)`.
+    - Add `Color::HSVA(r,g,b,a)`.
+    - Add `Color::Blend(Color)`.
+    - Add `Color::IsOpaque()`
+
+### Util
+- Feature: Support arbitrary `Adapter` for `ConstStringListRef`. See #843.
+
+### Build
+- Support for cmake's "unity/jumbo" builds. Fixed by @ClausKlein.
+
+5.0.0
+-----
+
+### Component
+- Breaking: MenuDirection enum is renamed Direction
+- Breaking: GaugeDirection enum is renamed Direction
+- Breaking: Direction enum is renamed WidthOrHeight
+- Breaking: Remove `ComponentBase` copy constructor/assignment.
+- Breaking: MenuOption::entries is renamed MenuOption::entries_option.
+- Breaking: `Ref<{Component}Option>` becomes `{Component}Option` in component constructors.
+- Feature: `ResizeableSplit` now support arbitrary element as a separator.
+- Feature: `input` is now supporting multiple lines.
+- Feature: `input` style is now customizeable.
+- Bugfix: Support F1-F5 from OS terminal.
+- Feature: Add struct based constructor:
+  ```cpp
+  Component Button(ButtonOption options);
+  Component Checkbox(CheckboxOption options);
+  Component Input(InputOption options);
+  Component Menu(MenuOption options);
+  Component MenuEntry(MenuEntryOption options);
+  Component Radiobox(RadioboxOption options);
+  Component Slider(SliderOption<T> options);
+  Component ResizableSplit(ResizableSplitOption options);
+  ```
+- Feature: Add `ScreenInteractive::TrackMouse(false)` disable mouse support.
+
+### Dom
+- Feature: Add `hyperlink` decorator. For instance:
+  ```cpp
+  auto link = text("Click here") | hyperlink("https://github.com/FTXUI")
+  ```
+  See the [OSC 8 page](https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda).
+  FTXUI support proposed by @aaleino in [#662](https://github.com/ArthurSonzogni/FTXUI/issues/662).
+
+### Screen
+- Breaking: `WordBreakProperty` becomes a uint8_t enum. This yields a 0.8%
+  performance improvement.
+- Breaking: Remove user defined Pixel constructor and equality operator.
+- Performance: 19% faster on benchmarks.
+
+
+### Build
+- Check version compatibility when using cmake find_package()
+- Add `FTXUI_DEV_WARNING` options to turn on warnings when building FTXUI
+- Turn OFF by default `FTXUI_BUILD_DOCS`
+- Turn OFF by default `FTXUI_BUILD_EXAMPLE`
+
+4.1.1
+-----
+
+### Component
+- Fix: Support arrow keys in application mode
+- Fix: Remove useless new line when using an alternative screen.
+
+### Dom
+- Feature: Add the dashed style for border and separator:
+  - See `DASHED` enum, and  `separatorDashed()`, `borderDashed()` functions.
+- Feature: Add colored borders.
+  - See functions: `borderStyled(BorderStyle, Color)` and `borderStyled(Color)`.
+- Feature: Add `LinearGradient`. It can be used in `color` and `bgColor`.
+- Improvement: Color::Interpolate() uses gamma correction.
+- Fix: Check the `graph` area is positive.
+
+### Build/Install
+- Use globally set CMAKE_CXX_STANDARD if it is set.
+- Expose the pkg-config file
+- Check version compatibility when using cmake find_package()
+
+4.1.0  (Abandonned)
+-----
+This version is abandonned and must not be used. It introduced a breaking change in the API.
+
+4.0.0
+-----
+
+### DOM
+- Feature: more styles:
+  - `strikethrough`
+  - `underlinedDouble`
+- Feature: Customize the cursor. Add the following decorators:
+  - `focusCursorBlock`
+  - `focusCursorBlockBlinking`
+  - `focusCursorBar`
+  - `focusCursorBarBlinking`
+  - `focusCursorUnderline`
+  - `focusCursorUnderlineBlinking`
+- Bugfix: Fix `focus`/`select` when the `vbox`/`hbox`/`dbox` contains a
+  `flexbox`
+- Bugfix: Fix the selected/focused area. It used to be 1 cell larger/longer than
+  requested
+- Bugfix: Forward the selected/focused area from the child in gridbox.
+- Bugfix: Fix incorrect Canvas computed dimensions.
+- Bugfix: Support `vscroll_indicator` with a zero inner size.
+- Bugfix: Fix `vscroll_indicator` hidding the last column.
+
+### Component:
+- Feature: Add the `Modal` component.
+- Feature: `Slider` supports taking references for all its arguments.
+- Feature: `Slider` supports `SliderOption`. It supports:
+    - multiple directions.
+    - multiple colors.
+    - various values (value, min, max, increment).
+- Feature: Define `ScreenInteractive::Exit()`.
+- Feature: Add `Loop` to give developers a better control on the main loop. This
+  can be used to integrate FTXUI into another main loop, without taking the full
+  control.
+- Feature: `Input` supports CTRL+Left and CTRL+Right
+- Feature: Use a blinking bar in the `Input` component.
+- Improvement: The `Menu` keeps the focus when an entry is selected with the
+  mouse.
+- Bugfix: Add implementation of `ButtonOption::Border()`. It was missing.
+- Bugfix: Provide the correct key for F1-F4 and F11.
+- Feature: Add the `Hoverable` component decorators.
+
+### Screen
+- Feature: add `Box::Union(a,b) -> Box`
+- Bugfix: Fix resetting `dim` clashing with resetting of `bold`.
+- Feature: Add emscripten screen resize support.
+- Bugfix: Add unicode 13 support for full width characters.
+- Bugfix: Fix MSVC treating codecvt C++17 deprecated function as an error.
+
+### Build
+- Support using the google test version provided by the package manager.
 
 3.0.0
 -----

CMakeLists.txt

@@ -1,17 +1,20 @@
-cmake_minimum_required(VERSION 3.11)
+cmake_minimum_required(VERSION 3.12)
 
 project(ftxui
   LANGUAGES CXX
-  VERSION 3.0.0
+  VERSION 6.0.1
+  DESCRIPTION "C++ Functional Terminal User Interface."
 )
 
-option(FTXUI_BUILD_DOCS "Set to ON to build docs" ON)
-option(FTXUI_BUILD_EXAMPLES "Set to ON to build examples" ON)
+option(FTXUI_QUIET "Set to ON for FTXUI to be quiet" OFF)
+option(FTXUI_BUILD_EXAMPLES "Set to ON to build examples" OFF)
+option(FTXUI_BUILD_DOCS "Set to ON to build docs" OFF)
 option(FTXUI_BUILD_TESTS "Set to ON to build tests" OFF)
 option(FTXUI_BUILD_TESTS_FUZZER "Set to ON to enable fuzzing" OFF)
 option(FTXUI_ENABLE_INSTALL "Generate the install target" ON)
 option(FTXUI_CLANG_TIDY "Execute clang-tidy" OFF)
 option(FTXUI_ENABLE_COVERAGE "Execute code coverage" OFF)
+option(FTXUI_DEV_WARNINGS "Enable more compiler warnings and warnings as errors" OFF)
 
 set(FTXUI_MICROSOFT_TERMINAL_FALLBACK_HELP_TEXT "On windows, assume the \
 terminal used will be one of Microsoft and use a set of reasonnable fallback \
@@ -24,16 +27,22 @@ else()
     ${FTXUI_MICROSOFT_TERMINAL_FALLBACK_HELP_TEXT} OFF)
 endif()
 
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+include(cmake/ftxui_message.cmake)
 
 add_library(screen
   include/ftxui/screen/box.hpp
   include/ftxui/screen/color.hpp
   include/ftxui/screen/color_info.hpp
+  include/ftxui/screen/image.hpp
+  include/ftxui/screen/pixel.hpp
   include/ftxui/screen/screen.hpp
   include/ftxui/screen/string.hpp
   src/ftxui/screen/box.cpp
   src/ftxui/screen/color.cpp
   src/ftxui/screen/color_info.cpp
+  src/ftxui/screen/image.cpp
   src/ftxui/screen/screen.cpp
   src/ftxui/screen/string.cpp
   src/ftxui/screen/terminal.cpp
@@ -42,12 +51,15 @@ add_library(screen
 
 add_library(dom
   include/ftxui/dom/canvas.hpp
+  include/ftxui/dom/direction.hpp
   include/ftxui/dom/elements.hpp
   include/ftxui/dom/flexbox_config.hpp
   include/ftxui/dom/node.hpp
   include/ftxui/dom/requirement.hpp
+  include/ftxui/dom/selection.hpp
   include/ftxui/dom/take_any_args.hpp
   src/ftxui/dom/automerge.cpp
+  src/ftxui/dom/selection_style.cpp
   src/ftxui/dom/blink.cpp
   src/ftxui/dom/bold.cpp
   src/ftxui/dom/border.cpp
@@ -70,18 +82,24 @@ add_library(dom
   src/ftxui/dom/graph.cpp
   src/ftxui/dom/gridbox.cpp
   src/ftxui/dom/hbox.cpp
+  src/ftxui/dom/hyperlink.cpp
   src/ftxui/dom/inverted.cpp
+  src/ftxui/dom/italic.cpp
+  src/ftxui/dom/linear_gradient.cpp
   src/ftxui/dom/node.cpp
   src/ftxui/dom/node_decorator.cpp
   src/ftxui/dom/paragraph.cpp
   src/ftxui/dom/reflect.cpp
   src/ftxui/dom/scroll_indicator.cpp
+  src/ftxui/dom/selection.cpp
   src/ftxui/dom/separator.cpp
   src/ftxui/dom/size.cpp
   src/ftxui/dom/spinner.cpp
+  src/ftxui/dom/strikethrough.cpp
   src/ftxui/dom/table.cpp
   src/ftxui/dom/text.cpp
   src/ftxui/dom/underlined.cpp
+  src/ftxui/dom/underlined_double.cpp
   src/ftxui/dom/util.cpp
   src/ftxui/dom/vbox.cpp
 )
@@ -93,6 +111,7 @@ add_library(component
   include/ftxui/component/component_base.hpp
   include/ftxui/component/component_options.hpp
   include/ftxui/component/event.hpp
+  include/ftxui/component/loop.hpp
   include/ftxui/component/mouse.hpp
   include/ftxui/component/receiver.hpp
   include/ftxui/component/screen_interactive.hpp
@@ -107,9 +126,12 @@ add_library(component
   src/ftxui/component/container.cpp
   src/ftxui/component/dropdown.cpp
   src/ftxui/component/event.cpp
+  src/ftxui/component/hoverable.cpp
   src/ftxui/component/input.cpp
+  src/ftxui/component/loop.cpp
   src/ftxui/component/maybe.cpp
   src/ftxui/component/menu.cpp
+  src/ftxui/component/modal.cpp
   src/ftxui/component/radiobox.cpp
   src/ftxui/component/radiobox.cpp
   src/ftxui/component/renderer.cpp
@@ -119,21 +141,23 @@ add_library(component
   src/ftxui/component/terminal_input_parser.cpp
   src/ftxui/component/terminal_input_parser.hpp
   src/ftxui/component/util.cpp
+  src/ftxui/component/window.cpp
 )
 
 target_link_libraries(dom
   PUBLIC screen
 )
 
-find_package(Threads)
 target_link_libraries(component
   PUBLIC dom
-  PUBLIC Threads::Threads
 )
 
-set_target_properties(screen PROPERTIES VERSION ${PROJECT_VERSION})
-set_target_properties(dom PROPERTIES VERSION ${PROJECT_VERSION})
-set_target_properties(component PROPERTIES VERSION ${PROJECT_VERSION})
+if (NOT EMSCRIPTEN)
+  find_package(Threads)
+  target_link_libraries(component
+    PUBLIC Threads::Threads
+  )
+endif()
 
 include(cmake/ftxui_set_options.cmake)
 ftxui_set_options(screen)
@@ -145,22 +169,13 @@ ftxui_check_coverage(screen)
 ftxui_check_coverage(dom)
 ftxui_check_coverage(component)
 
-if (FTXUI_BUILD_TESTS AND ${CMAKE_VERSION} VERSION_GREATER "3.11.4")
-  include(cmake/ftxui_test.cmake)
-endif()
-
-if(FTXUI_BUILD_EXAMPLES)
-  add_subdirectory(examples)
-endif()
-
-if(FTXUI_BUILD_DOCS)
-  add_subdirectory(doc)
-endif()
-
+include(cmake/ftxui_test.cmake)
+include(cmake/ftxui_benchmark.cmake)
+include(cmake/ftxui_fuzzer.cmake)
 include(cmake/iwyu.cmake)
 include(cmake/ftxui_export.cmake)
+include(cmake/ftxui_install.cmake)
+include(cmake/ftxui_package.cmake)
 
-if(FTXUI_ENABLE_INSTALL)
-  include(cmake/ftxui_install.cmake)
-  include(cmake/ftxui_package.cmake)
-endif()
+add_subdirectory(examples)
+add_subdirectory(doc)

README.md

@@ -1,13 +1,15 @@
 <p align="center">
-  <img src="./examples/component/homescreen.gif" alt="Demo image"></img>
+  <img src="https://github.com/ArthurSonzogni/FTXUI/assets/4759106/6925b6da-0a7e-49d9-883c-c890e1f36007" alt="Demo image"></img>
   <br/>
   <a href="#"><img src="https://img.shields.io/badge/c++-%2300599C.svg?style=flat&logo=c%2B%2B&logoColor=white"></img></a>
   <a href="http://opensource.org/licenses/MIT"><img src="https://img.shields.io/github/license/arthursonzogni/FTXUI?color=black"></img></a>
   <a href="#"><img src="https://img.shields.io/github/stars/ArthurSonzogni/FTXUI"></img></a>
   <a href="#"><img src="https://img.shields.io/github/forks/ArthurSonzogni/FTXUI"></img></a>
   <a href="#"><img src="https://img.shields.io/github/repo-size/ArthurSonzogni/FTXUI"></img></a>
-  <a href="https://github.com/ArthurSonzogni/FTXUI/issues"><img src="https://img.shields.io/github/issues/ArthurSonzogni/FTXUI"></img></a>
   <a href="https://github.com/ArthurSonzogni/FTXUI/graphs/contributors"><img src="https://img.shields.io/github/contributors/arthursonzogni/FTXUI?color=blue"></img></a>
+  <br/>
+  <a href="https://github.com/ArthurSonzogni/FTXUI/issues"><img src="https://img.shields.io/github/issues/ArthurSonzogni/FTXUI"></img></a>
+  <a href="https://repology.org/project/ftxui/versions"><img src="https://repology.org/badge/latest-versions/ftxui.svg" alt="latest packaged version(s)"></a>
   <a href="https://codecov.io/gh/ArthurSonzogni/FTXUI">
     <img src="https://codecov.io/gh/ArthurSonzogni/FTXUI/branch/master/graph/badge.svg?token=C41FdRpNVA"/>
   </a>
@@ -22,68 +24,56 @@
 
 </p>
 
-## FTXUI
+# FTXUI
 
 <i>Functional Terminal (X) User interface</i>
 
-A simple C++ library for terminal based user interfaces!
+A simple cross-platform C++ library for terminal based user interfaces!
 
 ## Feature
  * Functional style. Inspired by
-   [[1]](https://hackernoon.com/building-reactive-terminal-interfaces-in-c-d392ce34e649?gi=d9fb9ce35901)
+   [1](https://hackernoon.com/building-reactive-terminal-interfaces-in-c-d392ce34e649?gi=d9fb9ce35901)
    and [React](https://reactjs.org/)
  * Simple and elegant syntax (in my opinion)
  * Keyboard & mouse navigation.
  * Support for [UTF8](https://en.wikipedia.org/wiki/UTF-8) and [fullwidth chars](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) (→ 测试)
- * Support for animations. [Demo 1](https://arthursonzogni.com/FTXUI/examples/?file=component/menu_underline_animated_gallery), [Demo 2](https://arthursonzogni.com/FTXUI/examples/?file=component/button_style)
- * Support for drawing. [Demo](https://arthursonzogni.com/FTXUI/examples/?file=component/canvas_animated)
+ * Support for animations. [Demo 1](https://arthursonzogni.github.io/FTXUI/examples/?file=component/menu_underline_animated_gallery), [Demo 2](https://arthursonzogni.github.io/FTXUI/examples/?file=component/button_style)
+ * Support for drawing. [Demo](https://arthursonzogni.github.io/FTXUI/examples/?file=component/canvas_animated)
  * No dependencies
- * Cross platform: Linux/MacOS (main target), WebAssembly, Windows (Thanks to contributors!).
+ * **Cross platform**: Linux/MacOS (main target), WebAssembly, Windows (Thanks to contributors!).
  * Learn by [examples](#documentation), and [tutorials](#documentation)
- * Multiple packages: CMake [FetchContent](https://bewagner.net/programming/2020/05/02/cmake-fetchcontent/) (preferred), vcpkg, pkgbuild, conan.
- * Good practises: documentation, tests, fuzzers, performance tests, automated CI, automated packaging, etc...
+ * Multiple packages: CMake [FetchContent]([https://bewagner.net/programming/2020/05/02/cmake-fetchcontent/](https://cmake.org/cmake/help/latest/module/FetchContent.html)) (preferred), vcpkg, pkgbuild, conan.
+ * Good practices: documentation, tests, fuzzers, performance tests, automated CI, automated packaging, etc...
 
 ## Documentation
 
 - [Starter example project](https://github.com/ArthurSonzogni/ftxui-starter)
 - [Documentation](https://arthursonzogni.github.io/FTXUI/)
-- [Examples (WebAssembly)](https://arthursonzogni.com/FTXUI/examples/)
-- [Build using CMake](https://github.com/ArthurSonzogni/FTXUI/blob/master/doc/mainpage.md#using-cmake)
-
-## Operating systems
-
-This is expected to be cross platform. This supports / tests:
-- WebAssembly
-- Linux
-- MacOS
-- Windows
+- [Examples (WebAssembly)](https://arthursonzogni.github.io/FTXUI/examples/)
+- [Build using CMake](https://arthursonzogni.github.io/FTXUI/#build-cmake)
 
 ## Example
 ~~~cpp
-  vbox({
-    hbox({
-      text("left") | border,
-      text("middle") | border | flex,
-      text("right") | border,
-    }),
-    gauge(0.5) | border,
-  });
+    vbox({
+      hbox({
+        text("one") | border,
+        text("two") | border | flex,
+        text("three") | border | flex,
+      }),
+
+      gauge(0.25) | color(Color::Red),
+      gauge(0.50) | color(Color::White),
+      gauge(0.75) | color(Color::Blue),
+    });
 ~~~
 
-~~~bash
-┌────┐┌───────────────────────────────────────────────────────────────┐┌─────┐
-│left││middle                                                         ││right│
-└────┘└───────────────────────────────────────────────────────────────┘└─────┘
-┌────────────────────────────────────────────────────────────────────────────┐
-│██████████████████████████████████████                                      │
-└────────────────────────────────────────────────────────────────────────────┘
-~~~
+![image](https://github.com/ArthurSonzogni/FTXUI/assets/4759106/569bf043-4e85-4245-aad5-2324572135c4)
 
 ## Short gallery
 
 #### DOM
 
-This module defines a hierarchical set of Element. An element manages layout and can be responsive to the terminal dimensions.
+This module defines a hierarchical set of Element. An Element manages layout and can be responsive to the terminal dimensions.
 
 They are declared in [<ftxui/dom/elements.hpp>](https://arthursonzogni.github.io/FTXUI/elements_8hpp_source.html
 )
@@ -103,7 +93,7 @@ Element can become flexible using the the `flex` decorator.
 ![image](https://user-images.githubusercontent.com/4759106/147242524-7103b5d9-1a92-4e2d-ac70-b3d6740061e3.png)
   
   
-[Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2gridbox_8cpp-example.htmlp) using gridbox:
+[Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2gridbox_8cpp-example.html) using gridbox:
 
 ![image](https://user-images.githubusercontent.com/4759106/147242972-0db1f2e9-0790-496f-86e6-ed2c604f7a73.png)
 
@@ -111,7 +101,7 @@ Element can become flexible using the the `flex` decorator.
 
 ![image](https://user-images.githubusercontent.com/4759106/147243064-780ac7cc-605b-475f-94b8-cf7c4aed03a5.png)
 
-[See](https://arthursonzogni.github.io/FTXUI/examples_2dom_2hflow_8cpp-example.html) also this [demo](https://arthursonzogni.com/FTXUI/examples/?file=component/flexbox).
+[See](https://arthursonzogni.github.io/FTXUI/examples_2dom_2hflow_8cpp-example.html) also this [demo](https://arthursonzogni.github.io/FTXUI/examples/?file=component/flexbox).
 
 </details>
 
@@ -119,12 +109,16 @@ Element can become flexible using the the `flex` decorator.
 
 An element can be decorated using the functions:
   - `bold`
+  - `italic`
   - `dim`
   - `inverted`
   - `underlined`
+  - `underlinedDouble`
   - `blink`
+  - `strikethrough`
   - `color`
   - `bgcolor`
+  - `hyperlink`
 
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2style_gallery_8cpp-example.html)
 
@@ -206,13 +200,13 @@ Complex [examples](https://github.com/ArthurSonzogni/FTXUI/blob/master/examples/
 
 #### Component
 
-The ftxui/component is needed when you want to produce dynamic UI, reactive to the user's input. It defines a set of ftxui::Component. A component reacts to Events (keyboard, mouse, resize, ...) and Render Element (see previous section).
+ftxui/component produces dynamic UI, reactive to the user's input. It defines a set of ftxui::Component. A component reacts to Events (keyboard, mouse, resize, ...) and Renders as an Element (see previous section).
 
 Prebuilt components are declared in [<ftxui/component/component.hpp>](https://arthursonzogni.github.io/FTXUI/component_8hpp_source.html)
 
 <details><summary>Gallery</summary>
 
-[Gallery](https://arthursonzogni.github.io/FTXUI/examples_2component_2gallery_8cpp-example.html) of multiple components. ([demo](https://arthursonzogni.com/FTXUI/examples/?file=component/gallery))
+[Gallery](https://arthursonzogni.github.io/FTXUI/examples_2component_2gallery_8cpp-example.html) of multiple components. ([demo](https://arthursonzogni.github.io/FTXUI/examples/?file=component/gallery))
 
 ![image](https://user-images.githubusercontent.com/4759106/147247330-b60beb9f-e665-48b4-81c0-4b01ee95bc66.png)
 
@@ -299,8 +293,11 @@ Prebuilt components are declared in [<ftxui/component/component.hpp>](https://ar
 
 </details>
 
-
-
+## Libraries for FTXUI
+- *Want to share a useful Component for FTXUI? Feel free to add yours here*
+- [ftxui-grid-container](https://github.com/mingsheng13/grid-container-ftxui)
+- [ftxui-ip-input](https://github.com/mingsheng13/ip-input-ftxui)
+- [ftxui-image-view](https://github.com/ljrrjl/ftxui-image-view.git): For Image Display.
 
 
 ## Project using FTXUI
@@ -308,12 +305,12 @@ Prebuilt components are declared in [<ftxui/component/component.hpp>](https://ar
 Feel free to add your projects here:
 - [json-tui](https://github.com/ArthurSonzogni/json-tui)
 - [git-tui](https://github.com/ArthurSonzogni/git-tui)
+- [ostree-tui](https://github.com/AP-Sensing/ostree-tui)
 - [rgb-tui](https://github.com/ArthurSonzogni/rgb-tui)
 - [chrome-log-beautifier](https://github.com/ArthurSonzogni/chrome-log-beautifier)
 - [x86-64 CPU Architecture Simulation](https://github.com/AnisBdz/CPU)
 - [ltuiny](https://github.com/adrianoviana87/ltuiny)
 - [i3-termdialogs](https://github.com/mibli/i3-termdialogs)
-- [Just-Fast](https://github.com/GiuseppeCesarano/just-fast)
 - [simpPRU](https://github.com/VedantParanjape/simpPRU)
 - [Pigeon ROS TUI](https://github.com/PigeonSensei/Pigeon_ros_tui)
 - [hastur](https://github.com/robinlinden/hastur)
@@ -324,8 +321,35 @@ Feel free to add your projects here:
 - [tabdeeli](https://github.com/typon/tabdeeli)
 - [tiles](https://github.com/tusharpm/tiles)
 - [cachyos-cli-installer](https://github.com/cachyos/new-cli-installer)
+- [beagle-config](https://github.com/SAtacker/beagle-config)
+- [turing_cmd](https://github.com/DanArmor/turing_cmd)
+- [StartUp](https://github.com/StubbornVegeta/StartUp)
+- [eCAL monitor](https://github.com/eclipse-ecal/ecal)
+- [Path Finder](https://github.com/Ruebled/Path_Finder)
+- [rw-tui](https://github.com/LeeKyuHyuk/rw-tui)
+- [resource-monitor](https://github.com/catalincd/resource-monitor)
+- [ftxuiFileReader](https://github.com/J0sephDavis/ftxuiFileReader)
+- [ftxui_CPUMeter](https://github.com/tzzzzzzzx/ftxui_CPUMeter)
+- [Captain's log](https://github.com/nikoladucak/caps-log)
+- [FTowerX](https://github.com/MhmRhm/FTowerX)
+- [Caravan](https://github.com/r3w0p/caravan)
+- [Step-Writer](https://github.com/BrianAnakPintar/step-writer)
+- [XJ music](https://github.com/xjmusic/xjmusic)
+- [UDP chat](https://github.com/Sergeydigl3/udp-chat-tui)
+- [2048-cpp](https://github.com/Chessom/2048-cpp)
+- [Memory game](https://github.com/mikolajlubiak/memory)
+- [Terminal Animation](https://github.com/mikolajlubiak/terminal_animation)
+- [pciex](https://github.com/s0nx/pciex)
+- [Fallout terminal hacking](https://github.com/gshigin/yet-another-fallout-terminal-hacking-game)
+- [Lazylist](https://github.com/zhuyongqi9/lazylist)
+- [TUISIC](https://github.com/Dark-Kernel/tuisic)
+- [inLimbo](https://github.com/nots1dd/inLimbo)
+- [BestEdrOfTheMarket](https://github.com/Xacone/BestEdrOfTheMarket)
+- [terminal-rain](https://github.com/Oakamoore/terminal-rain)
+- [keywords](https://github.com/Oakamoore/keywords) ([Play web version :heart:](https://oakamoore.itch.io/keywords))
+- [FTB - tertminal file browser](https://github.com/Cyxuan0311/FTB)
 
-## [cpp-best-practices/game_jam](https://github.com/cpp-best-practices/game_jam)
+### [cpp-best-practices/game_jam](https://github.com/cpp-best-practices/game_jam)
 
 Several games using the FTXUI have been made during the Game Jam:
 - [TermBreaker](https://github.com/ArthurSonzogni/termBreaker) [**[Play web version]**](https://arthursonzogni.com/TermBreaker/)
@@ -335,21 +359,20 @@ Several games using the FTXUI have been made during the Game Jam:
 - [DanteO](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/danteo.md)
 - [Sumo](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/sumo.md)
 - [Drag Me aROUND](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/drag_me_around.md)
-- [DisarmSelfDestruct](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/LightsRound.v.0.1.0.md)
+- [DisarmSelfDestruct](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/DisarmSelfDestruct.md)
 - [TheWorld](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/TheWorld.md)
 - [smoothlife](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/smoothlife.md)
 - [Consu](https://github.com/cpp-best-practices/game_jam/blob/main/Jam1_April_2022/consu.md)
 
-## External package
+## Utilization
 
-It is **highly** recommended to use CMake FetchContent to depend on FTXUI. This
-way you can specify which commit you would like to depend on.
+It is **highly** recommended to use CMake FetchContent to depend on FTXUI so you may specify which commit you would like to depend on.
 ```cmake
 include(FetchContent)
 
 FetchContent_Declare(ftxui
   GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
-  GIT_TAG v2.0.0
+  GIT_TAG v6.0.1
 )
 
 FetchContent_GetProperties(ftxui)
@@ -359,10 +382,20 @@ if(NOT ftxui_POPULATED)
 endif()
 ```
 
-If you don't, the following packages have been created:
-- [vcpkg](https://vcpkg.info/port/ftxui)
+If you don't, FTXUI may be used from the following packages:
+- [vcpkg](https://vcpkgx.com/details.html?package=ftxui)
 - [Arch Linux PKGBUILD](https://aur.archlinux.org/packages/ftxui-git/).
 - [conan.io](https://conan.io/center/ftxui)
+- [openSUSE](https://build.opensuse.org/package/show/devel:libraries:c_c++/ftxui)
+- 
+[![Packaging status](https://repology.org/badge/vertical-allrepos/libftxui.svg)](https://repology.org/project/libftxui/versions)
+
+If you choose to build and link FTXUI yourself, `ftxui-component` must be first in the linking order relative to the other FTXUI libraries, i.e.
+```bash
+g++ . . . -lftxui-component -lftxui-dom -lftxui-screen . . .
+```
+
+
 
 ## Contributors
 

cmake/ftxui-config.cmake.in

@@ -2,3 +2,5 @@
 
 include(CMakeFindDependencyMacro)
 find_dependency(Threads)
+
+include("${CMAKE_CURRENT_LIST_DIR}/ftxui-targets.cmake")

cmake/ftxui_benchmark.cmake

@@ -1,31 +1,21 @@
-if (NOT WIN32)
-  FetchContent_Declare(googlebenchmark
-    GIT_REPOSITORY "https://github.com/google/benchmark"
-    GIT_TAG 62937f91b5c763a8e119d0c20c67b87bde8eff1c 
-    GIT_PROGRESS TRUE
-  )
-
-  FetchContent_GetProperties(googlebenchmark)
-  set (BENCHMARK_ENABLE_GTEST_TESTS OFF CACHE INTERNAL "")
-  set (BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "")
-  if(NOT googlebenchmark_POPULATED)
-    FetchContent_Populate(googlebenchmark)
-    add_subdirectory(
-      ${googlebenchmark_SOURCE_DIR}
-      ${googlebenchmark_BINARY_DIR}
-      EXCLUDE_FROM_ALL
+if (NOT FTXUI_BUILD_TESTS OR
+    NOT ${CMAKE_VERSION} VERSION_GREATER "3.11.4" OR
+    WIN32
     )
-  endif()
-
-  add_executable(ftxui_benchmark
-    src/ftxui/dom/benchmark_test.cpp
-  )
-  target_link_libraries(ftxui_benchmark
-    PRIVATE dom
-    PRIVATE benchmark::benchmark
-    PRIVATE benchmark::benchmark_main
-  )
-  target_include_directories(ftxui_benchmark
-    PRIVATE src
-  )
+  return()
 endif()
+
+include(cmake/ftxui_find_google_benchmark.cmake)
+
+add_executable(ftxui-benchmark
+  src/ftxui/dom/benchmark_test.cpp
+  )
+ftxui_set_options(ftxui-benchmark)
+target_link_libraries(ftxui-benchmark
+  PRIVATE dom
+  PRIVATE benchmark::benchmark
+  PRIVATE benchmark::benchmark_main
+  )
+target_include_directories(ftxui-benchmark
+  PRIVATE src
+  )

cmake/ftxui_export.cmake

@@ -4,5 +4,5 @@ add_library(ftxui::component ALIAS component)
 export(
   TARGETS screen dom component
   NAMESPACE ftxui::
-  FILE ${PROJECT_BINARY_DIR}/ftxui-targets.cmake
+  FILE "${PROJECT_BINARY_DIR}/ftxui-targets.cmake"
 )

cmake/ftxui_find_google_benchmark.cmake

@@ -0,0 +1,32 @@
+# Some developers would be happier with the google benchmark version provided
+# from their package manager. Use it if it is installed the package provide
+# cmake support.
+# https://github.com/ArthurSonzogni/FTXUI/issues/551
+find_package(benchmark QUIET)
+if (benchmark_FOUND)
+  return()
+endif()
+
+option(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
+option(FETCHCONTENT_QUIET FALSE)
+include(FetchContent)
+
+FetchContent_Declare(googlebenchmark
+  GIT_REPOSITORY "https://github.com/google/benchmark"
+  GIT_TAG        "015d1a091af6937488242b70121858bce8fd40e9"  # v1.8.2
+  GIT_PROGRESS   TRUE
+)
+
+FetchContent_GetProperties(googlebenchmark)
+set (BENCHMARK_ENABLE_GTEST_TESTS OFF CACHE INTERNAL "")
+set (BENCHMARK_ENABLE_TESTING OFF CACHE INTERNAL "")
+if(googlebenchmark_POPULATED)
+  return()
+endif()
+
+FetchContent_Populate(googlebenchmark)
+add_subdirectory(
+  ${googlebenchmark_SOURCE_DIR}
+  ${googlebenchmark_BINARY_DIR}
+  EXCLUDE_FROM_ALL
+)

cmake/ftxui_find_google_test.cmake

@@ -0,0 +1,33 @@
+# Some developers would be happier with the gtest version provided from their
+# package manager. Use it if it is installed the package provide cmake support.
+# https://github.com/ArthurSonzogni/FTXUI/issues/551
+find_package(GTest QUIET)
+
+if (GTest_FOUND)
+  return()
+endif()
+
+option(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
+option(FETCHCONTENT_QUIET FALSE)
+include(FetchContent)
+
+FetchContent_Declare(googletest
+  GIT_REPOSITORY "https://github.com/google/googletest"
+  GIT_TAG        23ef29555ef4789f555f1ba8c51b4c52975f0907
+  GIT_PROGRESS   TRUE
+)
+
+FetchContent_GetProperties(googletest)
+if(googletest_POPULATED)
+  return()
+endif()
+
+FetchContent_Populate(googletest)
+set(BUILD_GMOCK OFF CACHE INTERNAL "")
+set(INSTALL_GTEST OFF CACHE INTERNAL "")
+set(gtest_force_shared_crt ON CACHE INTERNAL "")
+add_subdirectory(
+  "${googletest_SOURCE_DIR}"
+  "${googletest_BINARY_DIR}"
+  EXCLUDE_FROM_ALL
+)

cmake/ftxui_fuzzer.cmake

@@ -1,22 +1,20 @@
+if (NOT FTXUI_BUILD_TESTS_FUZZER)
+  return()
+endif()
+
 set(CMAKE_C_COMPILER clang)
 set(CMAKE_CXX_COMPILER clang++)
 
-function(fuzz name)
+function(fuzz source)
+  set(name "ftxui-${source}")
   add_executable(${name}
-    src/ftxui/component/${name}.cpp
-  )
-  target_include_directories(${name}
-    PRIVATE src
-  )
-  target_link_libraries(${name}
-    PRIVATE component
-  )
-  target_compile_options(${name}
-    PRIVATE -fsanitize=fuzzer,address
-  )
-  target_link_libraries(${name}
-    PRIVATE -fsanitize=fuzzer,address
+    src/ftxui/component/${source}.cpp
   )
+  target_include_directories(${name} PRIVATE src)
+  target_link_libraries(${name} PRIVATE component)
+  target_compile_options(${name} PRIVATE -fsanitize=fuzzer,address)
+  target_link_libraries(${name} PRIVATE -fsanitize=fuzzer,address)
+  target_compile_features(${name} PRIVATE cxx_std_17)
 endfunction(fuzz)
 
 fuzz(terminal_input_parser_test_fuzzer)

cmake/ftxui_install.cmake

@@ -1,29 +1,60 @@
+if(NOT FTXUI_ENABLE_INSTALL)
+  return()
+endif()
+
 include(GNUInstallDirs)
-install(TARGETS screen dom component
-    EXPORT ftxui-export
-    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-)
-
-install(DIRECTORY include/ftxui DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
-
 include(CMakePackageConfigHelpers)
-configure_package_config_file(ftxui-config.cmake.in
-  ${CMAKE_CURRENT_BINARY_DIR}/ftxui-config.cmake
-  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/ftxui/cmake
-  PATH_VARS CMAKE_INSTALL_INCLUDEDIR
-)
-write_basic_package_version_file(
-  ftxui-config-version.cmake
-  VERSION ${PACKAGE_VERSION}
-  COMPATIBILITY AnyNewerVersion
-)
 
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/ftxui-config.cmake
-  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ftxui
-)
-install(EXPORT ftxui-export
-  FILE ftxui-config-version.cmake
+# ------------------------------------------------------------------------------
+# Install the library and its public headers into the standard subdirectories
+# ------------------------------------------------------------------------------
+install(
+  TARGETS screen dom component
+  EXPORT ftxui-targets
+  )
+
+install(
+  DIRECTORY include/ftxui
+  DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
+  )
+
+# ------------------------------------------------------------------------------
+# Install the exported cmake targets for use in other CMake projects.
+# ------------------------------------------------------------------------------
+install(
+  EXPORT ftxui-targets
   NAMESPACE ftxui::
-  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/ftxui
-)
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ftxui"
+  )
+
+# ------------------------------------------------------------------------------
+# Create and install the ftuxi-config.cmake and ftuxi-config-version.cmake files
+# needed to support users of find_package()
+# ------------------------------------------------------------------------------
+configure_package_config_file(
+  "${CMAKE_CURRENT_SOURCE_DIR}/cmake/ftxui-config.cmake.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config.cmake"
+  INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/ftxui/cmake"
+  PATH_VARS CMAKE_INSTALL_INCLUDEDIR
+  )
+write_basic_package_version_file(
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config-version.cmake"
+  VERSION ${PACKAGE_VERSION}
+  COMPATIBILITY SameMajorVersion
+  )
+install(
+  FILES
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config.cmake"
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake/ftxui-config-version.cmake"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/ftxui"
+  )
+
+# ------------------------------------------------------------------------------
+# Create and install pkg-config file for easy use of library in build systems
+# other than CMake:
+# ------------------------------------------------------------------------------
+configure_file(ftxui.pc.in ${CMAKE_CURRENT_BINARY_DIR}/ftxui.pc @ONLY)
+install(
+  FILES "${CMAKE_CURRENT_BINARY_DIR}/ftxui.pc"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
+  )

cmake/ftxui_message.cmake

@@ -0,0 +1,17 @@
+function(ftxui_message msg)
+  if (NOT FTXUI_QUIET)
+    message(STATUS "${msg}")
+  endif()
+endfunction()
+
+ftxui_message("┌─ FTXUI options ─────────────────────")
+ftxui_message("│ FTXUI_ENABLE_INSTALL     : ${FTXUI_ENABLE_INSTALL}")
+ftxui_message("│ FTXUI_BUILD_EXAMPLES     : ${FTXUI_BUILD_EXAMPLES}")
+ftxui_message("│ FTXUI_QUIET              : ${FTXUI_QUIET}")
+ftxui_message("│ FTXUI_BUILD_DOCS         : ${FTXUI_BUILD_DOCS}")
+ftxui_message("│ FTXUI_BUILD_TESTS        : ${FTXUI_BUILD_TESTS}")
+ftxui_message("│ FTXUI_BUILD_TESTS_FUZZER : ${FTXUI_BUILD_TESTS_FUZZER}")
+ftxui_message("│ FTXUI_ENABLE_COVERAGE    : ${FTXUI_ENABLE_COVERAGE}")
+ftxui_message("│ FTXUI_DEV_WARNINGS       : ${FTXUI_DEV_WARNINGS}")
+ftxui_message("│ FTXUI_CLANG_TIDY         : ${FTXUI_CLANG_TIDY}")
+ftxui_message("└─────────────────────────────────────")

cmake/ftxui_package.cmake

@@ -1,3 +1,7 @@
+if(NOT FTXUI_ENABLE_INSTALL)
+  return()
+endif()
+
 if (UNIX AND NOT APPLE)
   set(CPACK_GENERATOR "DEB;External;RPM;STGZ;TBZ2;TGZ;TXZ;TZ;TZST;ZIP")
 elseif (UNIX AND APPLE)

cmake/ftxui_set_options.cmake

@@ -1,42 +1,67 @@
-find_program( CLANG_TIDY_EXE NAMES "clang-tidy" DOC "Path to clang-tidy executable" )
-if(NOT CLANG_TIDY_EXE)
-  message(STATUS "clang-tidy not found.")
-else()
-  message(STATUS "clang-tidy found: ${CLANG_TIDY_EXE}")
-endif()
-
+find_program(CLANG_TIDY_EXE NAMES "clang-tidy" DOC "Path to clang-tidy executable" )
 
 function(ftxui_set_options library)
-  set_target_properties(${library} PROPERTIES OUTPUT_NAME "ftxui-${library}")
+  set_target_properties(${library} PROPERTIES VERSION ${PROJECT_VERSION})
+  if (NOT ${library} MATCHES "ftxui-*")
+    set_target_properties(${library} PROPERTIES OUTPUT_NAME "ftxui-${library}")
+  endif()
+
+  if (FTXUI_CLANG_TIDY)
+    if (NOT CLANG_TIDY_EXE)
+      message(FATAL_ERROR "clang-tidy requested but executable not found")
+    endif()
 
-  if(CLANG_TIDY_EXE AND FTXUI_CLANG_TIDY)
     set_target_properties(${library}
       PROPERTIES CXX_CLANG_TIDY "${CLANG_TIDY_EXE};-warnings-as-errors=*"
     )
+
+    # By using "PUBLIC" as opposed to "SYSTEM INTERFACE", the compiler warning
+    # are enforced on the headers. This is behind "FTXUI_CLANG_TIDY", so that it
+    # applies only when developing FTXUI and on the CI. User's of the library
+    # get only the SYSTEM INTERFACE instead.
+    target_include_directories(${library}
+      PUBLIC
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    )
+  else()
+    target_include_directories(${library} SYSTEM
+      INTERFACE
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    )
   endif()
 
-  target_include_directories(${library}
-    PUBLIC
+  target_include_directories(${library} SYSTEM
+    INTERFACE
       $<INSTALL_INTERFACE:include>
-      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
-    PRIVATE
-      src
   )
 
-  # C++17 is used. We require fold expression at least.
+  target_include_directories(${library}
+    PRIVATE
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+  )
+
   target_compile_features(${library} PUBLIC cxx_std_17)
 
   # Force Microsoft Visual Studio to decode sources files in UTF-8. This applies
   # to the library and the library users.
-  if (MSVC)
+  if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
     target_compile_options(${library} PUBLIC "/utf-8")
   endif()
 
+  # CMake does automatically add -fPIC when linking a shared library, but it
+  # does not add it when linking a static library. This is a problem when the 
+  # static library is later linked into a shared library. 
+  # Doing it helps some users.
+  set_property(TARGET ${library} PROPERTY POSITION_INDEPENDENT_CODE ON)
+
   # Add as many warning as possible:
   if (WIN32)
     if (MSVC)
-      target_compile_options(${library} PRIVATE "/W3")
-      target_compile_options(${library} PRIVATE "/WX")
+      if(FTXUI_DEV_WARNINGS)
+        target_compile_options(${library} PRIVATE "/W3")
+        target_compile_options(${library} PRIVATE "/WX")
+      endif()
       target_compile_options(${library} PRIVATE "/wd4244")
       target_compile_options(${library} PRIVATE "/wd4267")
       target_compile_options(${library} PRIVATE "/D_CRT_SECURE_NO_WARNINGS")
@@ -44,15 +69,30 @@ function(ftxui_set_options library)
     # Force Win32 to UNICODE
     target_compile_definitions(${library} PRIVATE UNICODE _UNICODE)
   else()
-    target_compile_options(${library} PRIVATE "-Wall")
-    target_compile_options(${library} PRIVATE "-Wextra")
-    target_compile_options(${library} PRIVATE "-pedantic")
-    target_compile_options(${library} PRIVATE "-Werror")
-    target_compile_options(${library} PRIVATE "-Wmissing-declarations")
-    target_compile_options(${library} PRIVATE "-Wdeprecated")
-    target_compile_options(${library} PRIVATE "-Wshadow")
+    if(FTXUI_DEV_WARNINGS)
+      target_compile_options(${library} PRIVATE "-Wall")
+      target_compile_options(${library} PRIVATE "-Werror")
+      target_compile_options(${library} PRIVATE "-Wextra")
+  
+      target_compile_options(${library} PRIVATE "-Wcast-align")
+      target_compile_options(${library} PRIVATE "-Wdeprecated")
+      target_compile_options(${library} PRIVATE "-Wmissing-declarations")
+      target_compile_options(${library} PRIVATE "-Wnon-virtual-dtor")
+      target_compile_options(${library} PRIVATE "-Wnull-dereference")
+      target_compile_options(${library} PRIVATE "-Woverloaded-virtual")
+      target_compile_options(${library} PRIVATE "-Wpedantic")
+      target_compile_options(${library} PRIVATE "-Wshadow")
+      target_compile_options(${library} PRIVATE "-Wunused")
+    endif()
   endif()
 
+  if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    if(FTXUI_DEV_WARNINGS)
+      target_compile_options(${library} PRIVATE "-Wdocumentation")
+    endif()
+  endif()
+
+
   if (FTXUI_MICROSOFT_TERMINAL_FALLBACK)
     target_compile_definitions(${library}
       PRIVATE "FTXUI_MICROSOFT_TERMINAL_FALLBACK")
@@ -60,9 +100,7 @@ function(ftxui_set_options library)
 endfunction()
 
 if (EMSCRIPTEN)
-  #string(APPEND CMAKE_CXX_FLAGS " -s ASSERTIONS=1")
   string(APPEND CMAKE_CXX_FLAGS " -s USE_PTHREADS")
   string(APPEND CMAKE_EXE_LINKER_FLAGS " -s ASYNCIFY")
   string(APPEND CMAKE_EXE_LINKER_FLAGS " -s PROXY_TO_PTHREAD")
 endif()
-

cmake/ftxui_test.cmake

@@ -1,40 +1,29 @@
-enable_testing()
-
-option(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
-option(FETCHCONTENT_QUIET FALSE)
-include(FetchContent)
-
-FetchContent_Declare(googletest
-  GIT_REPOSITORY "https://github.com/google/googletest"
-  GIT_TAG        23ef29555ef4789f555f1ba8c51b4c52975f0907
-  GIT_PROGRESS   TRUE
-)
-FetchContent_GetProperties(googletest)
-if(NOT googletest_POPULATED)
-  FetchContent_Populate(googletest)
-  set(BUILD_GMOCK OFF CACHE INTERNAL "")
-  set(INSTALL_GTEST OFF CACHE INTERNAL "")
-  set(gtest_force_shared_crt ON CACHE INTERNAL "")
-  add_subdirectory(
-    ${googletest_SOURCE_DIR}
-    ${googletest_BINARY_DIR}
-    EXCLUDE_FROM_ALL
-  )
+if (NOT FTXUI_BUILD_TESTS)
+  return()
 endif()
 
-add_executable(tests
+enable_testing()
+
+include(cmake/ftxui_find_google_test.cmake)
+
+add_executable(ftxui-tests
   src/ftxui/component/animation_test.cpp
   src/ftxui/component/button_test.cpp
   src/ftxui/component/collapsible_test.cpp
   src/ftxui/component/component_test.cpp
   src/ftxui/component/component_test.cpp
   src/ftxui/component/container_test.cpp
+  src/ftxui/component/dropdown_test.cpp
+  src/ftxui/component/hoverable_test.cpp
   src/ftxui/component/input_test.cpp
   src/ftxui/component/menu_test.cpp
+  src/ftxui/component/modal_test.cpp
   src/ftxui/component/radiobox_test.cpp
+  src/ftxui/util/ref_test.cpp
   src/ftxui/component/receiver_test.cpp
   src/ftxui/component/resizable_split_test.cpp
   src/ftxui/component/screen_interactive_test.cpp
+  src/ftxui/component/slider_test.cpp
   src/ftxui/component/terminal_input_parser_test.cpp
   src/ftxui/component/toggle_test.cpp
   src/ftxui/dom/blink_test.cpp
@@ -49,7 +38,11 @@ add_executable(tests
   src/ftxui/dom/gauge_test.cpp
   src/ftxui/dom/gridbox_test.cpp
   src/ftxui/dom/hbox_test.cpp
+  src/ftxui/dom/hyperlink_test.cpp
+  src/ftxui/dom/italic_test.cpp
+  src/ftxui/dom/linear_gradient_test.cpp
   src/ftxui/dom/scroll_indicator_test.cpp
+  src/ftxui/dom/selection_test.cpp
   src/ftxui/dom/separator_test.cpp
   src/ftxui/dom/spinner_test.cpp
   src/ftxui/dom/table_test.cpp
@@ -60,24 +53,31 @@ add_executable(tests
   src/ftxui/screen/string_test.cpp
 )
 
-target_link_libraries(tests
+target_link_libraries(ftxui-tests
   PRIVATE component
-  PRIVATE gtest
-  PRIVATE gtest_main
+  PRIVATE GTest::gtest
+  PRIVATE GTest::gtest_main
 )
-target_include_directories(tests
+target_include_directories(ftxui-tests
   PRIVATE src
 )
-ftxui_set_options(tests)
+target_compile_features(ftxui-tests PRIVATE cxx_std_20)
+
+# Disable unity build for tests. There are several files defining the same
+# function in different anonymous namespaces. This is not allowed in unity
+# builds, as it would result in multiple definitions of the same function.
+set_target_properties(ftxui-tests PROPERTIES UNITY_BUILD OFF)
+
+if (FTXUI_MICROSOFT_TERMINAL_FALLBACK)
+  target_compile_definitions(ftxui-tests
+    PRIVATE "FTXUI_MICROSOFT_TERMINAL_FALLBACK")
+endif()
 
 include(GoogleTest)
-gtest_discover_tests(tests
+gtest_discover_tests(ftxui-tests
   DISCOVERY_TIMEOUT 600
 )
 
-
-include(cmake/ftxui_benchmark.cmake)
-
-if (FTXUI_BUILD_TESTS_FUZZER)
-  include(cmake/ftxui_fuzzer.cmake)
-endif()
+#set(CMAKE_CTEST_ARGUMENTS "--rerun-failed --output-on-failure")
+#set_tests_properties(gen_init_queries PROPERTIES FIXTURES_SETUP f_init_queries)
+#set_tests_properties(test PROPERTIES  FIXTURES_REQUIRED f_init_queries)

cmake/iwyu.cmake

@@ -1,7 +1,7 @@
 find_program(iwyu_path NAMES include-what-you-use iwyu)
 if(iwyu_path)
   set_property(TARGET ${lib}
-    PROPERTY ${iwyu_path} -Xiwyu
-      --mapping_file ${CMAKE_CURRENT_SOURCE_DIR}/iwyu.impl
+    PROPERTY "${iwyu_path}" -Xiwyu
+      --mapping_file "${CMAKE_CURRENT_SOURCE_DIR}/iwyu.imp"
   )
 endif()

codecov.yml

@@ -0,0 +1,12 @@
+codecov:
+  require_ci_to_pass: no
+  notify:
+    after_n_builds: 4
+    wait_for_ci: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: "50...100"
+
+comment: false

doc/CMakeLists.txt

@@ -1,22 +1,27 @@
+if(NOT FTXUI_BUILD_DOCS)
+  return()
+endif()
+
 find_package(Doxygen)
-if (DOXYGEN_FOUND)
-  # Generate example list for documentation
-  set(EXAMPLE_LIST "${CMAKE_CURRENT_BINARY_DIR}/example_list.md")
-  file(WRITE ${EXAMPLE_LIST} "# Examples")
-  get_property(EXAMPLES GLOBAL PROPERTY FTXUI::EXAMPLES)
-  foreach(EXAMPLE IN LISTS EXAMPLES)
-    file(APPEND ${EXAMPLE_LIST} "\n@example examples/${EXAMPLE}.cpp")
-  endforeach(EXAMPLE IN LISTS EXAMPLES)
-
-  configure_file(Doxyfile.in Doxyfile @ONLY)
-
-  # note the option ALL which allows to build the docs together with the application
-  add_custom_target(doc
-    COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
-    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-    COMMENT "Generating API documentation with Doxygen"
-    VERBATIM
-    )
-else (DOXYGEN_FOUND)
+if (NOT DOXYGEN_FOUND)
   message("Doxygen need to be installed to generate the doxygen documentation")
-endif (DOXYGEN_FOUND)
+  return()
+endif()
+
+# Generate example list for documentation
+set(EXAMPLE_LIST "${CMAKE_CURRENT_BINARY_DIR}/example_list.md")
+file(WRITE ${EXAMPLE_LIST} "# Examples")
+get_property(EXAMPLES GLOBAL PROPERTY FTXUI::EXAMPLES)
+foreach(EXAMPLE IN LISTS EXAMPLES)
+  file(APPEND ${EXAMPLE_LIST} "\n@example examples/${EXAMPLE}.cpp")
+endforeach(EXAMPLE IN LISTS EXAMPLES)
+
+configure_file(Doxyfile.in Doxyfile @ONLY)
+
+# note the option ALL which allows to build the docs together with the application
+add_custom_target(doc
+  COMMAND ${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
+  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+  COMMENT "Generating API documentation with Doxygen"
+  VERBATIM
+  )

doc/doxygen_extra.css

@@ -178,11 +178,12 @@ div.headertitle {
 }
 
 div.fragment {
-  padding: 16px;
   background-color: #f3f3f3;
-  border: 0 solid;
-  transition: all 0.5s ease-in-out;
   border-radius:5px;
+  border: 0 solid;
+  border: none;
+  padding:16px;
+  transition: all 0.5s ease-in-out;
 }
 
 div.fragment:hover {
@@ -192,8 +193,9 @@ div.fragment:hover {
 
 div.line {
   font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-  font-size: 85%;
-  line-height: 1.45;
+  font-size: 90%;
+  font-variant-numeric: tabular-nums lining-nums;
+  font-kerning: none;
   -webkit-transition-duration: 0;
   -moz-transition-duration: 0;
   -ms-transition-duration: 0;
@@ -206,15 +208,6 @@ div.line.glow {
   box-shadow: none;
 }
 
-pre.fragment {
-  border: 0 solid #C4CFE5;
-  padding: 16px;
-  background-color: #f3f3f3;
-  font-size: 85%;
-  line-height: 1.45;
-  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
-}
-
 /* @group Code Colorization */
 span.keyword {
   color: #808000

doc/mainpage.md

@@ -4,8 +4,8 @@
 
 Welcome to the FTXUI documentation!
 
-This is a brief tutorial. You are also encouraged to learn, by reading the
-[examples](./examples.html)
+This is a brief tutorial. You are also encouraged to self-learn by reading the
+[examples](./examples.html).
 
 @tableofcontents 
 
@@ -45,82 +45,89 @@ int main(void) {
 
 **output**
 ```bash
-┌────┐┌─────────────────────────────────────────────────────────────────┐┌─────┐
-│left││middle                                                           ││right│
-└────┘└─────────────────────────────────────────────────────────────────┘└─────┘
+┌────┐┌────────────────────────────────────┐┌─────┐
+│left││middle                              ││right│
+└────┘└────────────────────────────────────┘└─────┘
 ```
 
-# Build {#build}
+## Configure {#configure}
+### Using CMake and find_package {#build-cmake-find-package}
 
-## Using CMake {#build-cmake}
+Assuming FTXUI is available or installed on the system.
 
-CMakeLists.txt
-~~~cmake
+**CMakeLists.txt**
+```cmake
 cmake_minimum_required (VERSION 3.11)
-
-# --- Fetch FTXUI --------------------------------------------------------------
-include(FetchContent)
-
-set(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
-FetchContent_Declare(ftxui
-  GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
-  # Important: Specify a GIT_TAG XXXXX here.
-)
-
-FetchContent_GetProperties(ftxui)
-if(NOT ftxui_POPULATED)
-  FetchContent_Populate(ftxui)
-  add_subdirectory(${ftxui_SOURCE_DIR} ${ftxui_BINARY_DIR} EXCLUDE_FROM_ALL)
-endif()
-
-# ------------------------------------------------------------------------------
-
-project(ftxui-starter
-  LANGUAGES CXX
-  VERSION 1.0.0
-)
-
+find_package(ftxui 5 REQUIRED)
+project(ftxui-starter LANGUAGES CXX VERSION 1.0.0)
 add_executable(ftxui-starter src/main.cpp)
-target_include_directories(ftxui-starter PRIVATE src)
-
 target_link_libraries(ftxui-starter
   PRIVATE ftxui::screen
   PRIVATE ftxui::dom
   PRIVATE ftxui::component # Not needed for this example.
 )
 
-~~~
+```
 
-Build
-~~~sh
+### Using CMake and FetchContent {#build-cmake}
+
+If you want to fetch FTXUI using cmake:
+
+**CMakeLists.txt**
+```cmake
+cmake_minimum_required (VERSION 3.11)
+
+include(FetchContent)
+set(FETCHCONTENT_UPDATES_DISCONNECTED TRUE)
+FetchContent_Declare(ftxui
+  GIT_REPOSITORY https://github.com/ArthurSonzogni/ftxui
+  GIT_TAG main # Important: Specify a version or a commit hash here.
+)
+FetchContent_MakeAvailable(ftxui)
+
+project(ftxui-starter LANGUAGES CXX VERSION 1.0.0)
+add_executable(ftxui-starter src/main.cpp)
+target_link_libraries(ftxui-starter
+  PRIVATE ftxui::screen
+  PRIVATE ftxui::dom
+  PRIVATE ftxui::component # Not needed for this example.
+)
+```
+
+## Build
+
+```bash
 mkdir build && cd build
 cmake ..
 make
 ./main
-~~~
+```
 
 # List of modules. {#modules}
 
-The project is made from into 3 modules:
+The project is comprised of 3 modules:
 
-1. **ftxui/screen** defines a `ftxui::Screen`, this is a grid of `ftxui::Pixel`.
+1. **ftxui/screen** defines a `ftxui::Screen`, a grid of `ftxui::Pixel`.
 
 2. **ftxui/dom** is the main module. It defines a hierarchical set of
    `ftxui::Element`.  An element draws something on the `ftxui::Screen`. It is
    responsive to the size of its container.
 
-3. **ftxui/component** The part is only needed if you need to respond to the
-   User input. It defines a set of `ftxui::Component`.  The use can navigates
-   using the arrow keys and interact with widgets like checkbox/inputbox/... You
-   can make you own components.
+3. **ftxui/component** The module is required if your program needs to respond
+   to user input. It defines a set of `ftxui::Component`. These components can
+   be utilized to navigate using the arrow keys *and/or* cursor. There are 
+   several builtin widgets like checkbox/inputbox/etc to interact with. You can
+   combine them, or even define your own custom components.
 
 # screen {#module-screen}
 
-It defines a `ftxui::Screen`. This is a grid of `ftxui::Pixel`. A Pixel
-represent a Unicode character and its associated style (bold, colors, etc...).
-The screen can be printed as a string using `ftxui::Screen::ToString()`.
+This is the visual element of the program. It defines a `ftxui::Screen`, which
+is a grid of `ftxui::Pixel`. A Pixel represents a Unicode character and its
+associated style (bold, italic, colors, etc.). The screen can be printed as a
+string using `ftxui::Screen::ToString()`. The following example highlights this
+process:
 
-~~~cpp
+```cpp
   #include <ftxui/screen/screen.hpp>
   #include <iostream>
 
@@ -136,12 +143,14 @@ The screen can be printed as a string using `ftxui::Screen::ToString()`.
     std::cout << screen.ToString();
     return EXIT_SUCCESS;
   }
-~~~
+```
 
 # dom {#module-dom}
 
 This module defines a hierarchical set of `ftxui::Element`. An element manages
-layout and can be responsive to the terminal dimensions.
+the layout and can be responsive to the terminal dimension changes. Note the
+following example where this module is used to create a simple layout with a
+number of operators:
 
 **Example:**
 ```cpp
@@ -165,7 +174,8 @@ document |= border
 
 **List of elements**
 
-They are all defined inside:
+The list of all elements are included and can be accessed by including the
+corresponding header file:
 ```cpp
 #include <ftxui/dom/elements.hpp>
 ```
@@ -175,41 +185,44 @@ They are all defined inside:
 ## text ## {#dom-text}
 
 The most simple widget. It displays a text.
-~~~cpp
+```cpp
 text("I am a piece of text");
-~~~
-~~~bash
+```
+```bash
 I am a piece of text.
-~~~
+```
 
 ## vtext {#dom-vtext}
 
-Same as `ftxui::text`, but vertical.
-~~~cpp
+Identical to `ftxui::text`, but displayed vertically.
+
+Code:
+```cpp
 vtext("HELLO");
-~~~
-~~~bash
+```
+
+Terminal output:
+```bash
 H
 E
 L
 L
 O
-~~~
+```
 
 ## paragraph {#dom-paragraph}
 
+Similar to `ftxui::text`, but the individual word are wrapped along multiple
+lines, depending on the width of its container.
+
+Sample Code:
 ```cpp
 paragraph("A very long text")
 ```
 
-Similar to `ftxui::text`, but this support line wrapping and alignments. The
-words are split by spaces
-
-[Paragraph example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2paragraph_8cpp-example.html)
-  
 ![ezgif com-gif-maker (4)](https://user-images.githubusercontent.com/4759106/147251370-983a06e7-6f41-4113-92b8-942f43d34d06.gif)
 
-See:
+For a more detailed example refer to [detailed example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2paragraph_8cpp-example.html). Paragraph also includes a number of other variants as shown below:
 ```cpp
 Element paragraph(std::string text);
 Element paragraphAlignLeft(std::string text);
@@ -221,25 +234,28 @@ Element paragraphAlignJustify(std::string text);
 
 ## border {#dom-border}
 
-Add a border around an element
-~~~cpp
-border(text("The element"))
-~~~
+Adds a border around an element.
 
-~~~bash
+Code:
+```cpp
+border(text("The element"))
+```
+
+Terminal output:
+```bash
 ┌───────────┐
 │The element│
 └───────────┘
-~~~
+```
 
-Same, with the pipe operator:
+You can achieve the same behavior by using the pipe operator.
 
+Code:
 ```cpp
 text("The element") | border
 ```
 
-Border come with different styles.
-See:
+Border also comes in a variety of styles as shown below:
 ```cpp
 Element border(Element);
 Element borderLight(Element);
@@ -254,24 +270,27 @@ Decorator borderWith(Pixel);
 
 ## window ## {#dom-window}
 
-A `ftxui::window` is a `ftxui::border`, but with some text on top of the border.
-Add a border around an element
-~~~cpp
+A `ftxui::window` is a `ftxui::border`, but with an additional header. To add a
+window around an element, wrap it and specify a string as the header.
+Code:
+```cpp
 window("The window", text("The element"))
-~~~
+```
 
-~~~bash
+Terminal output:
+```bash
 ┌The window─┐
 │The element│
 └───────────┘
-~~~
+```
 
 ## separator {#dom-separator}
 
-Display a vertical or horizontal line to visually split the content of a
+Displays a vertical/horizontal line to visually split the content of a
 container in two.
 
-~~~cpp
+Code:
+```cpp
 border(
   hbox({
     text("Left"), 
@@ -279,17 +298,17 @@ border(
     text("Right")
   })
 )
-~~~
+```
 
-~~~bash
+Terminal output:
+```bash
 ┌────┬─────┐
 │left│right│
 └────┴─────┘
-~~~
+```
 
 
-Separators come with different styles:
-See:
+Separators come in a variety of flavors as shown below:
 ```cpp
 Element separator(void);
 Element separatorLight();
@@ -311,18 +330,21 @@ Element separatorVSelector(float up,
 
 ## gauge {#dom-gauge}
 
-A gauge. It can be used to represent a progress bar.
-~~~cpp
-border(gauge(0.5))
-~~~
+It constitutes a gauge. It can be used to represent a progress bar.
 
-~~~bash
+Code:
+```cpp
+border(gauge(0.5))
+```
+
+Teminal output:
+```bash
 ┌────────────────────────────────────────────────────────────────────────────┐
 │██████████████████████████████████████                                      │
 └────────────────────────────────────────────────────────────────────────────┘
-~~~
+```
 
-A gauge can be displayed into several directions. See:
+Gauges can be displayed in many orientations as shown below:
 ```cpp
 Element gauge(float ratio);
 Element gaugeLeft(float ratio);
@@ -344,21 +366,21 @@ Element graph(GraphFunction);
 ```
 
 ## Colors {#dom-colors}
-A terminal console can usually display colored text and colored background.
 
-~~~cpp
+Most terminal consoles can display colored text and colored backgrounds. FTXUI
+supports every color palette:
+```cpp
 Decorator color(Color);
 Decorator bgcolor(Color);
-~~~
+```
 
-FTXUI support every color palette:
 
 Color [gallery](https://arthursonzogni.github.io/FTXUI/examples_2dom_2color_gallery_8cpp-example.html):
 ![image](https://user-images.githubusercontent.com/4759106/147248595-04c7245a-5b85-4544-809d-a5984fc6f9e7.png)
 
 ### Palette16 #{#dom-colors-palette-16}
 
-On most terminal the following colors are supported:
+On most terminals the following colors are supported:
 - Default
 
 - Black
@@ -385,7 +407,7 @@ On most terminal the following colors are supported:
 - Yellow
 - YellowLight
 
-Example:
+Example use of the above colors using the pipe operator:
 ```cpp
 text("Blue foreground") | color(Color::Blue);
 text("Blue background") | bgcolor(Color::Blue);
@@ -405,7 +427,11 @@ text("HotPink") | color(Color::HotPink);
 
 ### TrueColor #{#dom-colors-true-color}
 
-On terminal supporting trueColor, you can directly chose the 24bit RGB color:
+On terminal supporting trueColor, you can directly use the 24bit RGB color
+space:
+
+Use the constructors below to specify the **RGB** or **HSV** values for your
+color:
 
 There are two constructors:
 ```cpp
@@ -418,98 +444,141 @@ ftxui::Color::HSV(uint8_t hue, uint8_t saturation, uint8_t value);
 <script id="asciicast-xwzzghmqcqzIuyLwCpQFEqbEu" src="https://asciinema.org/a/xwzzghmqcqzIuyLwCpQFEqbEu.js" async></script>
 @endhtmlonly
 
-## Style {#dom-style}
-A terminal console can usually display colored text and colored background.
-The text can also have different effects: bold, dim, underlined, inverted,
-blink.
+## LinearGradient #{#dom-linear-gradient}
 
-~~~cpp
+FTXUI supports linear gradient. Either on the foreground or the background.
+
+```cpp
+Decorator color(const LinearGradient&);
+Decorator bgcolor(const LinearGradient&);
+```
+
+A `ftxui::LinearGradient` is defined by an angle in degree, and a list of color
+stops.
+```cpp
+auto gradient = LinearGradient()
+  .Angle(45)
+  .AddStop(0.0, Color::Red)
+  .AddStop(0.5, Color::Green)
+  .AddStop(1.0, Color::Blue);
+```
+
+You can also use simplified constructors:
+```cpp
+LinearGradient(Color::Red, Color::Blue);
+```
+```cpp
+LinearGradient(45, Color::Red, Color::Blue);
+```
+
+See [demo](https://arthursonzogni.github.io/FTXUI/examples/?file=component/linear_gradient_gallery).
+
+
+## Style {#dom-style}
+In addition to colored text and colored backgrounds. Many terminals support text
+effects such as: `bold`, `italic`, `dim`, `underlined`, `inverted`, `blink`.
+
+```cpp
 Element bold(Element);
+Element italic(Element);
 Element dim(Element);
 Element inverted(Element);
 Element underlined(Element);
+Element underlinedDouble(Element);
+Element strikethrough(Element);
 Element blink(Element);
 Decorator color(Color);
 Decorator bgcolor(Color);
-~~~
+Decorator colorgrad(LinearGradient);
+Decorator bgcolorgrad(LinearGradient);
+```
 
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2style_gallery_8cpp-example.html)
 
 ![image](https://user-images.githubusercontent.com/4759106/147244118-380bf834-9e33-40df-9ff0-07c10f2598ef.png)
 
-Example:
-~~~cpp
+To use these effects, simply wrap your elements with your desired effect:
+```cpp
 underlined(bold(text("This text is bold and underlined")))
-~~~
+```
 
-Tips: The pipe operator can be used to chain Decorator:
-~~~cpp
-text("This text is bold")) | bold | underlined
-~~~
+Alternatively, use the pipe operator to chain it on your element:
+```cpp
+text("This text is bold") | bold | underlined
+```
 
 ## Layout {#dom-layout}
 
-Element can be arranged together:
-  - horizontally with `ftxui::hbox`
-  - vertically with `ftxui::vbox`
-  - inside a grid with `ftxui::gridbox`
-  - wrap along one direction using the `ftxui::flexbox`.
+Enables elements to be arranged in the following ways:
+  - **Horizontally** with `ftxui::hbox`
+  - **Vertically** with `ftxui::vbox`
+  - **Inside a grid** with `ftxui::gridbox`
+  - **Wrapped along one direction** using the `ftxui::flexbox`.
   
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2vbox_hbox_8cpp-example.html) using `ftxui::hbox`, `ftxui::vbox` and `ftxui::filler`.
 
 ![image](https://user-images.githubusercontent.com/4759106/147242524-7103b5d9-1a92-4e2d-ac70-b3d6740061e3.png)
   
   
-[Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2gridbox_8cpp-example.htmlp) using `ftxui::gridbox`:
+[Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2gridbox_8cpp-example.htmlp)
+using `ftxui::gridbox`:
 
 ![image](https://user-images.githubusercontent.com/4759106/147242972-0db1f2e9-0790-496f-86e6-ed2c604f7a73.png)
 
-[Example](https://github.com/ArthurSonzogni/FTXUI/blob/master/examples/dom/hflow.cpp) using flexbox:
+[Example](https://github.com/ArthurSonzogni/FTXUI/blob/master/examples/dom/hflow.cpp)
+using flexbox:
 
 ![image](https://user-images.githubusercontent.com/4759106/147243064-780ac7cc-605b-475f-94b8-cf7c4aed03a5.png)
 
-[See](https://arthursonzogni.github.io/FTXUI/examples_2dom_2hflow_8cpp-example.html) also this [demo](https://arthursonzogni.com/FTXUI/examples/?file=component/flexbox).
+Checkout this
+[example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2hflow_8cpp-example.html)
+and the associated
+[demo](https://arthursonzogni.github.io/FTXUI/examples/?file=component/flexbox).
 
-Element can become flexible using the the `ftxui::flex` decorator.
+Element can also become flexible using the the `ftxui::flex` decorator.
 
-**Examples**
-~~~cpp
+Code:
+```cpp
   hbox({
     text("left") | border ,
     text("middle") | border | flex,
     text("right") | border,
   });
-~~~
-~~~bash
-┌────┐┌─────────────────────────────────────────────────────────────────┐┌─────┐
-│left││middle                                                           ││right│
-└────┘└─────────────────────────────────────────────────────────────────┘└─────┘
-~~~
+```
+Terminal output:
+```bash
+┌────┐┌─────────────────────────────────────────────────────┐┌─────┐
+│left││middle                                               ││right│
+└────┘└─────────────────────────────────────────────────────┘└─────┘
+```
 
-~~~cpp
+Code:
+```cpp
   hbox({
     text("left") | border ,
     text("middle") | border | flex,
     text("right") | border | flex,
   });
-~~~
-~~~bash
-┌────┐┌───────────────────────────────────┐┌───────────────────────────────────┐
-│left││middle                             ││right                              │
-└────┘└───────────────────────────────────┘└───────────────────────────────────┘
-~~~
+```
+
+Terminal output:
+```bash
+┌────┐┌───────────────────────────────┐┌───────────────────────────────┐
+│left││middle                         ││right                          │
+└────┘└───────────────────────────────┘└───────────────────────────────┘
+```
 
 ## Table {#dom-table}
 
-A class to easily style a table of data.
+Enables easy formatting of data into a neat table like visual form.
 
-[Example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2table_8cpp-example.html):
+[Code example](https://arthursonzogni.github.io/FTXUI/examples_2dom_2table_8cpp-example.html):
   
 ![image](https://user-images.githubusercontent.com/4759106/147250766-77d8ec9e-cf2b-486d-9866-1fd9f1bd2e6b.png)
 
 ## Canvas {#dom-canvas}
 
-See [<ftxui/dom/canvas.hpp>](./canvas_8hpp_source.html)
+See the API [<ftxui/dom/canvas.hpp>](./canvas_8hpp_source.html)
 
 ```cpp
   auto c = Canvas(100, 100);
@@ -517,41 +586,41 @@ See [<ftxui/dom/canvas.hpp>](./canvas_8hpp_source.html)
   auto element = canvas(c);
 ```
 
-Drawing can be made on a `ftxui::Canvas`, using braille, block, or simple
+Drawing can be performed on a `ftxui::Canvas`, using braille, block, or simple
 characters:
   
 Simple [example](https://github.com/ArthurSonzogni/FTXUI/blob/master/examples/dom/canvas.cpp):
   
 ![image](https://user-images.githubusercontent.com/4759106/147245843-76cc62fb-ccb4-421b-aacf-939f9afb42fe.png)
 
-Complex [examples](https://github.com/ArthurSonzogni/FTXUI/blob/master/examples/component/canvas_animated.cpp):
+Complex [example](https://github.com/ArthurSonzogni/FTXUI/blob/master/examples/component/canvas_animated.cpp):
   
-![ezgif com-gif-maker (3)](https://user-images.githubusercontent.com/4759106/147250538-783a8246-98e0-4a25-b032-3bd3710549d1.gif)  
-
+![ezgif com-gif-maker (3)](https://user-images.githubusercontent.com/4759106/147250538-783a8246-98e0-4a25-b032-3bd3710549d1.gif)
 # component {#module-component}
 
-The `ftxui::component`module defines the logic to produce interactive component
-responding to user's events (keyboard, mouse, etc...)
+The `ftxui::component` module defines the logic that produces interactive
+components that respond to user events (keyboard, mouse, etc.).
 
-A `ftxui::ScreenInteractive` defines a main loop to render a component.
+A `ftxui::ScreenInteractive` defines a main loop that renders a component.
 
-A `ftxui::Component` is a shared pointer to a `ftxui::ComponentBase`. The later
-defines
+A `ftxui::Component` is a shared pointer to a `ftxui::ComponentBase`. The latter defines:
   - `ftxui::ComponentBase::Render()`: How to render the interface.
   - `ftxui::ComponentBase::OnEvent()`: How to react to events.
-  - `ftxui::ComponentBase::Add()`: Give a parent/child relation ship in between
-    two component. This defines a tree a components, which help properly define
-    how keyboard navigation works.
+  - `ftxui::ComponentBase::Add()`: Construct a parent/child relationship
+    between two components. The tree of component is used to define how to
+    navigate using the keyboard.
+
+`ftxui::Element` are used to render a single frame.
 
-`ftxui::Element` are used to render a single frame. On the other side
 `ftxui::Component` are used to render dynamic user interface, producing multiple
 frame, and updating its state on events.
 
-[Gallery](https://arthursonzogni.github.io/FTXUI/examples_2component_2gallery_8cpp-example.html) of multiple components. ([demo](https://arthursonzogni.com/FTXUI/examples/?file=component/gallery))
+[Gallery](https://arthursonzogni.github.io/FTXUI/examples_2component_2gallery_8cpp-example.html) of multiple components. ([demo](https://arthursonzogni.github.io/FTXUI/examples/?file=component/gallery))
 
 ![image](https://user-images.githubusercontent.com/4759106/147247330-b60beb9f-e665-48b4-81c0-4b01ee95bc66.png)
 
-Predefined components are available in ["ftxui/dom/component.hpp"](./component_8hpp.html)
+All predefined components are available in
+["ftxui/dom/component.hpp"](./component_8hpp.html)
 
 \include ftxui/component/component.hpp
 
@@ -567,8 +636,30 @@ Produced by: `ftxui::Input()` from "ftxui/component/component.hpp"
 <script id="asciicast-223719" src="https://asciinema.org/a/223719.js" async></script>
 @endhtmlonly
 
+### Filtered input
+
+On can filter out the characters received by the input component, using
+`ftxui::CatchEvent`.
+
+```cpp
+std::string phone_number;
+Component input = Input(&phone_number, "phone number");
+
+// Filter out non-digit characters.
+input |= CatchEvent([&](Event event) {
+  return event.is_character() && !std::isdigit(event.character()[0]);
+});
+
+// Filter out characters past the 10th one.
+input |= CatchEvent([&](Event event) {
+  return event.is_character() && phone_number.size() >= 10;
+});
+```
+
 ## Menu {#component-menu}
 
+Defines a menu object. It contains a list of entries, one of them is selected.
+
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2menu_8cpp-example.html):
 
 ![image](https://user-images.githubusercontent.com/4759106/147247822-0035fd6f-bb13-4b3a-b057-77eb9291582f.png)
@@ -582,6 +673,8 @@ Produced by: `ftxui::Menu()` from "ftxui/component/component.hpp"
 
 ## Toggle {#component-toggle}
 
+A special kind of menu. The entries are displayed horizontally.
+
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2toggle_8cpp-example.html):
 
 ![image](https://user-images.githubusercontent.com/4759106/147249383-e2201cf1-b7b8-4a5a-916f-d761e3e7ae40.png)
@@ -594,6 +687,9 @@ Produced by: `ftxui::Toggle()` from "ftxui/component/component.hpp"
 
 ## CheckBox {#component-checkbox}
 
+This component defines a checkbox. It is a single entry that can be turned
+on/off.
+
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2checkbox_8cpp-example.html):
 
 ![image](https://user-images.githubusercontent.com/4759106/147246646-b86926a9-1ef9-4efb-af98-48a9b62acd81.png)
@@ -606,6 +702,8 @@ Produced by: `ftxui::Checkbox()` from "ftxui/component/component.hpp"
 
 ## RadioBox {#component-radiobox}
 
+A radiobutton component. This is a list of entries, where one can be turned on.
+
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2radiobox_8cpp-example.html):
   
 ![image](https://user-images.githubusercontent.com/4759106/147246401-809d14a5-6621-4e36-8dd9-a2d75ef2a94e.png)
@@ -618,6 +716,9 @@ Produced by: `ftxui::Radiobox()` from "ftxui/component/component.hpp"
 
 ## Dropdown {#component-dropdown}
 
+A drop down menu is a component that when checked display a list of element for
+the user to select one.
+
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2dropdown_8cpp-example.html):
 
 ![youtube-video-gif (3)](https://user-images.githubusercontent.com/4759106/147246982-1e821751-531c-4e1f-bc37-2fa290e143cd.gif)
@@ -626,6 +727,9 @@ Produced by: `ftxui::Dropdown()` from "ftxui/component/component.hpp"
 
 ## Slider {#component-slider}
 
+Represents a slider object that consists of a range with binned intermediate
+intervals. It can be created by `ftxui::Slider()`.
+
 [Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2slider_8cpp-example.html):
 
 ![image](https://user-images.githubusercontent.com/4759106/147249265-7e2cad75-082c-436e-affe-44a550c480ab.png)
@@ -634,7 +738,7 @@ Produced by: `ftxui::Slider()` from "ftxui/component/component.hpp"
 
 ## Renderer {#component-renderer}
 
-Produced by: `ftxui::Renderer()` from \ref 'ftxui/component/component.hpp'. This
+Produced by: `ftxui::Renderer()` from \ref ftxui/component/component.hpp. This
 component decorate another one by using a different function to render an
 interface.
 
@@ -647,11 +751,11 @@ auto renderer = Renderer(inner, [&] {
 });
 ```
 
-`ftxui::Renderer` also support the component decorator pattern:
+`ftxui::Renderer` also supports the component decorator pattern:
 ```cpp
 auto component = [...]
 component = component
-  | Renderer([] (Element e) { return e | border))
+  | Renderer([](Element e) { return e | border))
   | Renderer(bold)
 ```
 
@@ -663,9 +767,8 @@ component = component | border | bold;
 
 ## CatchEvent {#component-catchevent}
 
-Produced by: `ftxui::CatchEvent()` from \ref 'ftxui/component/component.hpp'.
-This component decorate another one and catch the events before the underlying
-component.
+Produced by: `ftxui::CatchEvent()` from \ref ftxui/component/component.hpp.
+This component decorate others, catching events before the underlying component.
 
 Examples:
 ```cpp
@@ -694,9 +797,9 @@ component = component
 
 ## Collapsible {#component-collapsible}
 
-Useful for section whose visibility can be toggle on/off by the user.
-This is basically, a combinaison of a `ftxui::Checkbox` and a `ftxui::Maybe`
-components.
+Useful for visual elements whose visibility can be toggle on/off by the user.
+Essentially, this the combination of the `ftxui::Checkbox()` and
+`ftxui::Maybe()` components.
 
 ```cpp
 auto collabsible = Collapsible("Show more", inner_element);
@@ -704,9 +807,9 @@ auto collabsible = Collapsible("Show more", inner_element);
 
 ## Maybe {#component-maybe}
 
-Produced by: `ftxui::Maybe()` from \ref `ftxui/component/component.hpp`.
-This component decorate another one, by showing/hiding it depending on a boolean
-or a predicate.
+Produced by: `ftxui::Maybe()` from \ref ftxui/component/component.hpp.
+This component can be utilized to show/hide any other component via a boolean or
+a predicate.
 
 Example with a boolean:
 ```cpp
@@ -721,9 +824,8 @@ auto component = Renderer([]{ return "Hello World!"; });
 auto maybe_component = Maybe(component, [&] { return time > 10; })
 ```
 
-`ftxui::Maybe` can be used as a decorator.
-
-```
+As usual, `ftxui::Maybe` can also be used as a decorator:
+```cpp
 component = component
   | Maybe(&a_boolean)
   | Maybe([&] { return time > 10; })
@@ -759,22 +861,20 @@ one of them. This is useful for implementing a tab bar.
   ![ezgif com-gif-maker (2)](https://user-images.githubusercontent.com/4759106/147250217-fe447e0f-7a99-4e08-948a-995087d9b40e.gif)
 
 
-## ResizableSplit::{Left, Right, Top, Bottom}  {#component-resizable-split}
+## ResizableSplit  {#component-resizable-split}
 
-[Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2resizable_split_8cpp-example.html):
-
-![ezgif com-gif-maker](https://user-images.githubusercontent.com/4759106/147248372-c55512fe-9b96-4b08-a1df-d05cf2cae431.gif)  
-
-Produced by:
+It defines a horizontal or vertical separation between two children components.
+The position of the split is variable and controllable using the mouse. 
+There are four possible splits:
 - `ftxui::ResizableSplitLeft()`
 - `ftxui::ResizableSplitRight()`
 - `ftxui::ResizableSplitTop()`
 - `ftxui::ResizableSplitBottom()`
 from "ftxui/component/component.hpp"
 
-It defines an horizontal or vertical separation in between two children
-component. The position of the split is variable and controllable using the
-mouse.
+[Example](https://arthursonzogni.github.io/FTXUI/examples_2component_2resizable_split_8cpp-example.html):
+
+![ezgif com-gif-maker](https://user-images.githubusercontent.com/4759106/147248372-c55512fe-9b96-4b08-a1df-d05cf2cae431.gif)  
 
 @htmlonly
 <script id="asciicast-tprMH2EdkUoMb7D2YxgMGgpzx" src="https://asciinema.org/a/tprMH2EdkUoMb7D2YxgMGgpzx.js" async></script>
@@ -782,16 +882,14 @@ mouse.
 
 ## Force a frame redraw. {#component-force-redraw}
 
-Whenever a new group of events have been processed: keyboard, mouse, window
-resize, etc..., the `ftxui::ScreenInteractive::Loop()` is responsible for
-drawing a new frame.
-
-You might want to react to arbitrary events that are unknown to FTXUI. This can
-be achieve by posting events via `ftxui::ScreenInteractive::PostEvent`, via a
-thread. You can post the event`ftxui::Event::Custom`.
+Typically, `ftxui::ScreenInteractive::Loop()` is responsible for drawing a new
+frame whenever a new group of events (e.g keyboard, mouse, window resize, etc.)
+has been processed. However, you might want to react to arbitrary events that
+are unknown to FTXUI. To accomplish this, you must post events using
+`ftxui::ScreenInteractive::PostEvent` (**this is thread safe**) via a thread.
+You will have to post the event `ftxui::Event::Custom`.
 
+Example:
 ```cpp
 screen->PostEvent(Event::Custom);
 ```
-
-`ftxui::ScreenInteractive::PostEvent` is thread safe.

examples/CMakeLists.txt

@@ -1,24 +1,29 @@
+if(NOT FTXUI_BUILD_EXAMPLES)
+  return()
+endif()
+
 set(EXAMPLES_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 function(example name)
   add_executable(ftxui_example_${name} ${name}.cpp)
   target_link_libraries(ftxui_example_${name} PUBLIC ${DIRECTORY_LIB})
   file(RELATIVE_PATH dir ${EXAMPLES_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
   set_property(GLOBAL APPEND PROPERTY FTXUI::EXAMPLES ${dir}/${name})
+  target_compile_features(ftxui_example_${name} PRIVATE cxx_std_20)
 endfunction(example)
 
 add_subdirectory(component)
 add_subdirectory(dom)
 
 if (EMSCRIPTEN)
-  # 32MB should be enough to run all the examples, in debug mode.
-  target_link_options(component PUBLIC "SHELL: -s TOTAL_MEMORY=33554432")
-  target_link_options(component PUBLIC "SHELL: -s ASSERTIONS=1")
-  #string(APPEND CMAKE_EXE_LINKER_FLAGS " -s ALLOW_MEMORY_GROWTH=1")
-  #target_link_options(component PUBLIC "SHELL: -s ALLOW_MEMORY_GROWTH=1")
+  string(APPEND CMAKE_EXE_LINKER_FLAGS " -s ALLOW_MEMORY_GROWTH=1")
+  target_link_options(component PUBLIC "SHELL: -s ALLOW_MEMORY_GROWTH=1")
 
   get_property(EXAMPLES GLOBAL PROPERTY FTXUI::EXAMPLES)
   foreach(file
       "index.html"
+      "index.mjs"
+      "index.css"
+      "sw.js"
       "run_webassembly.py")
     configure_file(${file} ${file})
   endforeach(file)

examples/component/CMakeLists.txt

@@ -9,31 +9,44 @@ example(checkbox)
 example(checkbox_in_frame)
 example(collapsible)
 example(composition)
+example(custom_loop)
 example(dropdown)
+example(dropdown_custom)
 example(flexbox_gallery)
 example(focus)
+example(focus_cursor)
 example(gallery)
 example(homescreen)
 example(input)
+example(input_in_frame)
+example(input_style)
+example(linear_gradient_gallery)
 example(maybe)
 example(menu)
 example(menu2)
 example(menu_entries)
 example(menu_entries_animated)
 example(menu_in_frame)
+example(menu_in_frame_horizontal)
 example(menu_multiple)
 example(menu_style)
 example(menu_underline_animated_gallery)
 example(modal_dialog)
+example(modal_dialog_custom)
 example(nested_screen)
 example(print_key_press)
 example(radiobox)
 example(radiobox_in_frame)
 example(renderer)
 example(resizable_split)
+example(scrollbar)
+example(selection)
 example(slider)
+example(slider_direction)
 example(slider_rgb)
 example(tab_horizontal)
 example(tab_vertical)
+example(textarea)
 example(toggle)
+example(window)
 example(with_restored_io)

examples/component/button.cpp

@@ -1,40 +1,9 @@
-#include <memory>  // for shared_ptr, __shared_ptr_access
-#include <string>  // for operator+, to_string
+#include "ftxui/component/component.hpp"
+#include "ftxui/component/screen_interactive.hpp"
 
-#include "ftxui/component/captured_mouse.hpp"  // for ftxui
-#include "ftxui/component/component.hpp"  // for Button, Horizontal, Renderer
-#include "ftxui/component/component_base.hpp"      // for ComponentBase
-#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
-#include "ftxui/dom/elements.hpp"  // for separator, gauge, text, Element, operator|, vbox, border
-
-using namespace ftxui;
-
-int main(int argc, const char* argv[]) {
-  int value = 50;
-
-  // The tree of components. This defines how to navigate using the keyboard.
-  auto buttons = Container::Horizontal({
-      Button("Decrease", [&] { value--; }),
-      Button("Increase", [&] { value++; }),
-  });
-
-  // Modify the way to render them on screen:
-  auto component = Renderer(buttons, [&] {
-    return vbox({
-               text("value = " + std::to_string(value)),
-               separator(),
-               gauge(value * 0.01f),
-               separator(),
-               buttons->Render(),
-           }) |
-           border;
-  });
-
-  auto screen = ScreenInteractive::FitComponent();
-  screen.Loop(component);
-  return 0;
+int main(){
+    auto screen = ftxui::ScreenInteractive::Fullscreen();
+    auto testComponent = ftxui::Renderer([](){return ftxui::text("test Component");});
+    screen.Loop(testComponent);
+    return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/button_animated.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for shared_ptr, __shared_ptr_access
 #include <string>  // for operator+, to_string
 
@@ -11,7 +14,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   int value = 50;
 
   // The tree of components. This defines how to navigate using the keyboard.
@@ -40,7 +43,3 @@ int main(int argc, const char* argv[]) {
   screen.Loop(component);
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/button_in_frame.cpp

@@ -1,3 +1,6 @@
+// Copyright 2022 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, __shared_ptr_access, shared_ptr
 #include <string>  // for to_string, operator+
 
@@ -11,17 +14,16 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   int counter = 0;
   auto on_click = [&] { counter++; };
 
-  auto button_style = ButtonOption::Animated(Color::Default, Color::GrayDark,
-                                             Color::Default, Color::White);
+  auto style = ButtonOption::Animated(Color::Default, Color::GrayDark,
+                                      Color::Default, Color::White);
 
   auto container = Container::Vertical({});
   for (int i = 0; i < 30; ++i) {
-    auto button =
-        Button("Button " + std::to_string(i), on_click, &button_style);
+    auto button = Button("Button " + std::to_string(i), on_click, style);
     container->Add(button);
   }
 
@@ -43,7 +45,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2022 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/button_style.cpp

@@ -1,4 +1,6 @@
-#include <memory>  // for shared_ptr
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <string>  // for operator+, to_string
 
 #include "ftxui/component/captured_mouse.hpp"  // for ftxui
@@ -6,12 +8,12 @@
 #include "ftxui/component/component_base.hpp"      // for Component
 #include "ftxui/component/component_options.hpp"   // for ButtonOption
 #include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
-#include "ftxui/dom/elements.hpp"  // for separator, Element, text, border
+#include "ftxui/dom/elements.hpp"  // for Element, separator, text, border
 #include "ftxui/screen/color.hpp"  // for Color, Color::Blue, Color::Green, Color::Red
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   int value = 0;
   auto action = [&] { value++; };
   auto action_renderer =
@@ -56,7 +58,3 @@ int main(int argc, const char* argv[]) {
   screen.Loop(buttons);
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/canvas_animated.cpp

@@ -1,3 +1,6 @@
+// Copyright 2021 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSED file.
 #include <cmath>                   // for sin, cos
 #include <ftxui/dom/elements.hpp>  // for canvas, Element, separator, hbox, operator|, border
 #include <ftxui/screen/screen.hpp>  // for Pixel
@@ -14,7 +17,7 @@
 #include "ftxui/dom/canvas.hpp"                    // for Canvas
 #include "ftxui/screen/color.hpp"  // for Color, Color::Red, Color::Blue, Color::Green, ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   int mouse_x = 0;
@@ -257,7 +260,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2021 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSED file.

examples/component/checkbox.cpp

@@ -1,31 +1,38 @@
-#include <memory>  // for allocator, __shared_ptr_access
-#include <string>  // for string, basic_string, operator+, to_string
-#include <vector>  // for vector
-
-#include "ftxui/component/captured_mouse.hpp"  // for ftxui
-#include "ftxui/component/component.hpp"       // for Input, Renderer, Vertical
-#include "ftxui/component/component_base.hpp"  // for ComponentBase
-#include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
-#include "ftxui/dom/elements.hpp"  // for operator|, Element, size, border, frame, vscroll_indicator, HEIGHT, LESS_THAN
-
-int main(int argc, const char* argv[]) {
-  using namespace ftxui;
-
-  Component input_list = Container::Vertical({});
-  std::vector<std::string> items(100, "");
-  for (int i = 0; i < items.size(); ++i) {
-    input_list->Add(Input(&(items[i]), "placeholder " + std::to_string(i)));
-  }
-
-  auto renderer = Renderer(input_list, [&] {
-    return input_list->Render() | vscroll_indicator | frame | border |
-           size(HEIGHT, LESS_THAN, 10);
-  });
-
-  auto screen = ScreenInteractive::TerminalOutput();
-  screen.Loop(renderer);
-}
-
 // Copyright 2021 Arthur Sonzogni. All rights reserved.
 // Use of this source code is governed by the MIT license that can be found in
 // the LICENSE file.
+#include <array>  // for array
+#include <iostream>
+#include <memory>  // for shared_ptr, __shared_ptr_access
+#include <string>  // for operator+, to_string
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"  // for Checkbox, Renderer, Vertical
+#include "ftxui/component/component_base.hpp"      // for ComponentBase
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for operator|, Element, size, border, frame, vscroll_indicator, HEIGHT, LESS_THAN
+
+using namespace ftxui;
+
+int main() {
+  bool download = false;
+  bool upload = false;
+  bool ping = false;
+
+  auto container = Container::Vertical({
+      Checkbox("Download", &download),
+      Checkbox("Upload", &upload),
+      Checkbox("Ping", &ping),
+  });
+
+  auto screen = ScreenInteractive::FitComponent();
+  screen.Loop(container);
+
+  std::cout << "---" << std::endl;
+  std::cout << "Download: " << download << std::endl;
+  std::cout << "Upload: " << upload << std::endl;
+  std::cout << "Ping: " << ping << std::endl;
+  std::cout << "---" << std::endl;
+
+  return 0;
+}

examples/component/checkbox_in_frame.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <array>   // for array
 #include <memory>  // for shared_ptr, __shared_ptr_access
 #include <string>  // for operator+, to_string
@@ -10,7 +13,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::array<bool, 30> states;
 
   auto container = Container::Vertical({});
@@ -29,7 +32,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/collapsible.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>   // for allocator, make_shared, __shared_ptr_access
 #include <utility>  // for move
 #include <vector>   // for vector
@@ -26,7 +29,7 @@ Component Empty() {
   return std::make_shared<ComponentBase>();
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto component =
       Collapsible("Collapsible 1",
                   Inner({
@@ -52,7 +55,3 @@ int main(int argc, const char* argv[]) {
 
   ScreenInteractive::FitComponent().Loop(component);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/composition.cpp

@@ -1,3 +1,6 @@
+// Copyright 2021 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, shared_ptr, __shared_ptr_access
 #include <string>  // for operator+, to_string
 
@@ -11,7 +14,7 @@ using namespace ftxui;
 
 // An example of how to compose multiple components into one and maintain their
 // interactiveness.
-int main(int argc, const char* argv[]) {
+int main() {
   auto left_count = 0;
   auto right_count = 0;
 
@@ -58,7 +61,3 @@ int main(int argc, const char* argv[]) {
 }
 
 // Thanks to Chris Morgan for this example!
-
-// Copyright 2021 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/custom_loop.cpp

@@ -0,0 +1,54 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <stdlib.h>                   // for EXIT_SUCCESS
+#include <chrono>                     // for milliseconds
+#include <ftxui/component/event.hpp>  // for Event
+#include <ftxui/component/mouse.hpp>  // for ftxui
+#include <ftxui/dom/elements.hpp>  // for text, separator, Element, operator|, vbox, border
+#include <memory>                  // for allocator, shared_ptr
+#include <string>                  // for operator+, to_string
+#include <thread>                  // for sleep_for
+
+#include "ftxui/component/component.hpp"  // for CatchEvent, Renderer, operator|=
+#include "ftxui/component/loop.hpp"       // for Loop
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+
+int main() {
+  using namespace ftxui;
+  auto screen = ScreenInteractive::FitComponent();
+
+  // Create a component counting the number of frames drawn and event handled.
+  int custom_loop_count = 0;
+  int frame_count = 0;
+  int event_count = 0;
+  auto component = Renderer([&] {
+    frame_count++;
+    return vbox({
+               text("This demonstrates using a custom ftxui::Loop. It "),
+               text("runs at 100 iterations per seconds. The FTXUI events "),
+               text("are all processed once per iteration and a new frame "),
+               text("is rendered as needed"),
+               separator(),
+               text("ftxui event count: " + std::to_string(event_count)),
+               text("ftxui frame count: " + std::to_string(frame_count)),
+               text("Custom loop count: " + std::to_string(custom_loop_count)),
+           }) |
+           border;
+  });
+
+  component |= CatchEvent([&](Event) -> bool {
+    event_count++;
+    return false;
+  });
+
+  Loop loop(&screen, component);
+
+  while (!loop.HasQuitted()) {
+    custom_loop_count++;
+    loop.RunOnce();
+    std::this_thread::sleep_for(std::chrono::milliseconds(10));
+  }
+
+  return EXIT_SUCCESS;
+}

examples/component/dropdown.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <string>  // for basic_string, string, allocator
 #include <vector>  // for vector
 
@@ -5,7 +8,7 @@
 #include "ftxui/component/component.hpp"  // for Dropdown, Horizontal, Vertical
 #include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   std::vector<std::string> entries = {
@@ -39,7 +42,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::FitComponent();
   screen.Loop(layout);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/dropdown_custom.cpp

@@ -0,0 +1,104 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <string>  // for basic_string, string, allocator
+#include <vector>  // for vector
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"  // for Dropdown, Horizontal, Vertical
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+
+int main() {
+  using namespace ftxui;
+
+  std::vector<std::string> entries = {
+      "tribute",     "clearance", "ally",        "bend",        "electronics",
+      "module",      "era",       "cultural",    "sniff",       "nationalism",
+      "negotiation", "deliver",   "figure",      "east",        "tribute",
+      "clearance",   "ally",      "bend",        "electronics", "module",
+      "era",         "cultural",  "sniff",       "nationalism", "negotiation",
+      "deliver",     "figure",    "east",        "tribute",     "clearance",
+      "ally",        "bend",      "electronics", "module",      "era",
+      "cultural",    "sniff",     "nationalism", "negotiation", "deliver",
+      "figure",      "east",
+  };
+
+  auto dropdown_1 = Dropdown({
+      .radiobox = {.entries = &entries},
+      .transform =
+          [](bool open, Element checkbox, Element radiobox) {
+            if (open) {
+              return vbox({
+                  checkbox | inverted,
+                  radiobox | vscroll_indicator | frame |
+                      size(HEIGHT, LESS_THAN, 10),
+                  filler(),
+              });
+            }
+            return vbox({
+                checkbox,
+                filler(),
+            });
+          },
+  });
+
+  auto dropdown_2 = Dropdown({
+      .radiobox = {.entries = &entries},
+      .transform =
+          [](bool open, Element checkbox, Element radiobox) {
+            if (open) {
+              return vbox({
+                  checkbox | inverted,
+                  radiobox | vscroll_indicator | frame |
+                      size(HEIGHT, LESS_THAN, 10) | bgcolor(Color::Blue),
+                  filler(),
+              });
+            }
+            return vbox({
+                checkbox | bgcolor(Color::Blue),
+                filler(),
+            });
+          },
+  });
+
+  auto dropdown_3 = Dropdown({
+      .radiobox =
+          {
+              .entries = &entries,
+              .transform =
+                  [](const EntryState& s) {
+                    auto t = text(s.label) | borderEmpty;
+                    if (s.active) {
+                      t |= bold;
+                    }
+                    if (s.focused) {
+                      t |= inverted;
+                    }
+                    return t;
+                  },
+          },
+      .transform =
+          [](bool open, Element checkbox, Element radiobox) {
+            checkbox |= borderEmpty;
+            if (open) {
+              return vbox({
+                  checkbox | inverted,
+                  radiobox | vscroll_indicator | frame |
+                      size(HEIGHT, LESS_THAN, 20) | bgcolor(Color::Red),
+                  filler(),
+              });
+            }
+            return vbox({
+                checkbox | bgcolor(Color::Red),
+                filler(),
+            });
+          },
+  });
+
+  auto screen = ScreenInteractive::FitComponent();
+  screen.Loop(Container::Horizontal({
+      dropdown_1,
+      dropdown_2,
+      dropdown_3,
+  }));
+}

examples/component/flexbox_gallery.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <stddef.h>  // for size_t
 #include <memory>    // for shared_ptr, __shared_ptr_access, allocator
 #include <string>  // for string, basic_string, to_string, operator+, char_traits
@@ -13,7 +16,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::Fullscreen();
 
   int direction_index = 0;
@@ -186,7 +189,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/focus.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, shared_ptr, __shared_ptr_access
 #include <string>  // for operator+, char_traits, to_string, string
 #include <vector>  // for vector
@@ -31,7 +34,7 @@ Element make_grid() {
   return gridbox(rows);
 };
 
-int main(int argc, const char* argv[]) {
+int main() {
   float focus_x = 0.5f;
   float focus_y = 0.5f;
 
@@ -64,7 +67,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/focus_cursor.cpp

@@ -0,0 +1,37 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <ftxui/component/captured_mouse.hpp>  // for ftxui
+#include <string>  // for allocator, operator+, char_traits, string
+
+#include "ftxui/component/component.hpp"           // for Renderer, Vertical
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive, Component
+#include "ftxui/dom/elements.hpp"  // for text, Decorator, focus, focusCursorBar, focusCursorBarBlinking, focusCursorBlock, focusCursorBlockBlinking, focusCursorUnderline, focusCursorUnderlineBlinking, hbox, Element
+
+using namespace ftxui;
+
+Component Instance(std::string label, Decorator focusCursor) {
+  return Renderer([=](bool focused) {
+    if (focused) {
+      return hbox({
+          text("> " + label + " "),
+          focusCursor(text(" ")),
+      });
+    }
+    return text("  " + label + " ");
+  });
+};
+
+int main() {
+  auto screen = ScreenInteractive::Fullscreen();
+  screen.Loop(Container::Vertical({
+      Instance("focus", focus),
+      Instance("focusCursorBlock", focusCursorBlock),
+      Instance("focusCursorBlockBlinking", focusCursorBlockBlinking),
+      Instance("focusCursorBar", focusCursorBar),
+      Instance("focusCursorBarBlinking", focusCursorBarBlinking),
+      Instance("focusCursorUnderline", focusCursorUnderline),
+      Instance("focusCursorUnderlineBlinking", focusCursorUnderlineBlinking),
+  }));
+  return 0;
+}

examples/component/gallery.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <functional>  // for function
 #include <memory>      // for shared_ptr, allocator, __shared_ptr_access
 #include <string>      // for string, basic_string
@@ -23,7 +26,7 @@ Component Wrap(std::string name, Component component) {
   });
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::FitComponent();
 
   // -- Menu
@@ -94,7 +97,25 @@ int main(int argc, const char* argv[]) {
   });
   sliders = Wrap("Slider", sliders);
 
-  // -- Layout -----------------------------------------------------------------
+  // A large text:
+  auto lorel_ipsum = Renderer([] {
+    return vbox({
+        text("Lorem ipsum dolor sit amet, consectetur adipiscing elit. "),
+        text("Sed do eiusmod tempor incididunt ut labore et dolore magna "
+             "aliqua. "),
+        text("Ut enim ad minim veniam, quis nostrud exercitation ullamco "
+             "laboris nisi ut aliquip ex ea commodo consequat. "),
+        text("Duis aute irure dolor in reprehenderit in voluptate velit esse "
+             "cillum dolore eu fugiat nulla pariatur. "),
+        text("Excepteur sint occaecat cupidatat non proident, sunt in culpa "
+             "qui officia deserunt mollit anim id est laborum. "),
+
+    });
+  });
+  lorel_ipsum = Wrap("Lorel Ipsum", lorel_ipsum);
+
+  // -- Layout
+  // -----------------------------------------------------------------
   auto layout = Container::Vertical({
       menu,
       toggle,
@@ -103,6 +124,7 @@ int main(int argc, const char* argv[]) {
       input,
       sliders,
       button,
+      lorel_ipsum,
   });
 
   auto component = Renderer(layout, [&] {
@@ -120,6 +142,8 @@ int main(int argc, const char* argv[]) {
                sliders->Render(),
                separator(),
                button->Render(),
+               separator(),
+               lorel_ipsum->Render(),
            }) |
            xflex | size(WIDTH, GREATER_THAN, 40) | border;
   });
@@ -128,7 +152,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/homescreen.cpp

@@ -1,17 +1,21 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <stddef.h>    // for size_t
 #include <array>       // for array
+#include <atomic>      // for atomic
 #include <chrono>      // for operator""s, chrono_literals
 #include <cmath>       // for sin
 #include <functional>  // for ref, reference_wrapper, function
 #include <memory>      // for allocator, shared_ptr, __shared_ptr_access
-#include <string>  // for string, basic_string, operator+, to_string, char_traits
+#include <string>  // for string, basic_string, char_traits, operator+, to_string
 #include <thread>   // for sleep_for, thread
 #include <utility>  // for move
 #include <vector>   // for vector
 
 #include "../dom/color_info_sorted_2d.ipp"  // for ColorInfoSorted2D
 #include "ftxui/component/component.hpp"  // for Checkbox, Renderer, Horizontal, Vertical, Input, Menu, Radiobox, ResizableSplitLeft, Tab
-#include "ftxui/component/component_base.hpp"     // for ComponentBase
+#include "ftxui/component/component_base.hpp"  // for ComponentBase, Component
 #include "ftxui/component/component_options.hpp"  // for MenuOption, InputOption
 #include "ftxui/component/event.hpp"              // for Event, Event::Custom
 #include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
@@ -23,7 +27,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::Fullscreen();
 
   // ---------------------------------------------------------------------------
@@ -260,7 +264,7 @@ int main(int argc, const char* argv[]) {
   });
 
   // ---------------------------------------------------------------------------
-  // Spiner
+  // Spinner
   // ---------------------------------------------------------------------------
   auto spinner_tab_renderer = Renderer([&] {
     Elements entries;
@@ -420,7 +424,7 @@ int main(int argc, const char* argv[]) {
   auto paragraph_renderer_left = Renderer([&] {
     std::string str =
         "Lorem Ipsum is simply dummy text of the printing and typesetting "
-        "industry. Lorem Ipsum has been the industry's standard dummy text "
+        "industry.\nLorem Ipsum has been the industry's standard dummy text "
         "ever since the 1500s, when an unknown printer took a galley of type "
         "and scrambled it to make a type specimen book.";
     return vbox({
@@ -486,26 +490,40 @@ int main(int argc, const char* argv[]) {
       },
       &tab_index);
 
+  auto exit_button =
+      Button("Exit", [&] { screen.Exit(); }, ButtonOption::Animated());
+
   auto main_container = Container::Vertical({
-      tab_selection,
+      Container::Horizontal({
+          tab_selection,
+          exit_button,
+      }),
       tab_content,
   });
 
   auto main_renderer = Renderer(main_container, [&] {
     return vbox({
         text("FTXUI Demo") | bold | hcenter,
-        tab_selection->Render(),
+        hbox({
+            tab_selection->Render() | flex,
+            exit_button->Render(),
+        }),
         tab_content->Render() | flex,
     });
   });
 
-  bool refresh_ui_continue = true;
+  std::atomic<bool> refresh_ui_continue = true;
   std::thread refresh_ui([&] {
     while (refresh_ui_continue) {
       using namespace std::chrono_literals;
       std::this_thread::sleep_for(0.05s);
-      shift++;
-      screen.PostEvent(Event::Custom);
+      // The |shift| variable belong to the main thread. `screen.Post(task)`
+      // will execute the update on the thread where |screen| lives (e.g. the
+      // main thread). Using `screen.Post(task)` is threadsafe.
+      screen.Post([&] { shift++; });
+      // After updating the state, request a new frame to be drawn. This is done
+      // by simulating a new "custom" event to be handled.
+      screen.Post(Event::Custom);
     }
   });
 
@@ -515,7 +533,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/input.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, __shared_ptr_access
 #include <string>  // for char_traits, operator+, string, basic_string
 
@@ -9,33 +12,53 @@
 #include "ftxui/dom/elements.hpp"  // for text, hbox, separator, Element, operator|, vbox, border
 #include "ftxui/util/ref.hpp"  // for Ref
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
+  // The data:
   std::string first_name;
   std::string last_name;
   std::string password;
+  std::string phoneNumber;
 
+  // The basic input components:
   Component input_first_name = Input(&first_name, "first name");
   Component input_last_name = Input(&last_name, "last name");
 
+  // The password input component:
   InputOption password_option;
   password_option.password = true;
   Component input_password = Input(&password, "password", password_option);
 
+  // The phone number input component:
+  // We are using `CatchEvent` to filter out non-digit characters.
+  Component input_phone_number = Input(&phoneNumber, "phone number");
+  input_phone_number |= CatchEvent([&](Event event) {
+    return event.is_character() && !std::isdigit(event.character()[0]);
+  });
+  input_phone_number |= CatchEvent([&](Event event) {
+    return event.is_character() && phoneNumber.size() > 10;
+  });
+
+  // The component tree:
   auto component = Container::Vertical({
       input_first_name,
       input_last_name,
       input_password,
+      input_phone_number,
   });
 
+  // Tweak how the component tree is rendered:
   auto renderer = Renderer(component, [&] {
     return vbox({
-               text("Hello " + first_name + " " + last_name),
-               separator(),
                hbox(text(" First name : "), input_first_name->Render()),
                hbox(text(" Last name  : "), input_last_name->Render()),
                hbox(text(" Password   : "), input_password->Render()),
+               hbox(text(" Phone num  : "), input_phone_number->Render()),
+               separator(),
+               text("Hello " + first_name + " " + last_name),
+               text("Your password is " + password),
+               text("Your phone number is " + phoneNumber),
            }) |
            border;
   });
@@ -43,7 +66,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::TerminalOutput();
   screen.Loop(renderer);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/input_in_frame.cpp

@@ -0,0 +1,30 @@
+// Copyright 2021 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <memory>  // for allocator, __shared_ptr_access
+#include <string>  // for string, basic_string, operator+, to_string
+#include <vector>  // for vector
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"       // for Input, Renderer, Vertical
+#include "ftxui/component/component_base.hpp"  // for ComponentBase
+#include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for operator|, Element, size, border, frame, vscroll_indicator, HEIGHT, LESS_THAN
+
+int main() {
+  using namespace ftxui;
+
+  Component input_list = Container::Vertical({});
+  std::vector<std::string> items(100, "");
+  for (size_t i = 0; i < items.size(); ++i) {
+    input_list->Add(Input(&(items[i]), "placeholder " + std::to_string(i)));
+  }
+
+  auto renderer = Renderer(input_list, [&] {
+    return input_list->Render() | vscroll_indicator | frame | border |
+           size(HEIGHT, LESS_THAN, 10);
+  });
+
+  auto screen = ScreenInteractive::TerminalOutput();
+  screen.Loop(renderer);
+}

examples/component/input_style.cpp

@@ -0,0 +1,97 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <ftxui/dom/linear_gradient.hpp>  // for LinearGradient
+#include <ftxui/screen/color.hpp>  // for Color, Color::White, Color::Red, Color::Blue, Color::Black, Color::GrayDark, ftxui
+#include <functional>              // for function
+#include <string>                  // for allocator, string
+#include <utility>                 // for move
+
+#include "ftxui/component/component.hpp"  // for Input, Horizontal, Vertical, operator|
+#include "ftxui/component/component_base.hpp"     // for Component
+#include "ftxui/component/component_options.hpp"  // for InputState, InputOption
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for operator|=, Element, bgcolor, operator|, separatorEmpty, color, borderEmpty, separator, text, center, dim, hbox, vbox, border, borderDouble, borderRounded
+
+int main() {
+  using namespace ftxui;
+
+  InputOption style_1 = InputOption::Default();
+
+  InputOption style_2 = InputOption::Spacious();
+
+  InputOption style_3 = InputOption::Spacious();
+  style_3.transform = [](InputState state) {
+    state.element |= borderEmpty;
+
+    if (state.is_placeholder) {
+      state.element |= dim;
+    }
+
+    if (state.focused) {
+      state.element |= borderDouble;
+      state.element |= bgcolor(Color::White);
+      state.element |= color(Color::Black);
+    } else if (state.hovered) {
+      state.element |= borderRounded;
+      state.element |= bgcolor(LinearGradient(90, Color::Blue, Color::Red));
+      state.element |= color(Color::White);
+    } else {
+      state.element |= border;
+      state.element |= bgcolor(LinearGradient(0, Color::Blue, Color::Red));
+      state.element |= color(Color::White);
+    }
+
+    return state.element;
+  };
+
+  InputOption style_4 = InputOption::Spacious();
+  style_4.transform = [](InputState state) {
+    state.element = hbox({
+        text("Theorem") | center | borderEmpty | bgcolor(Color::Red),
+        separatorEmpty(),
+        separator() | color(Color::White),
+        separatorEmpty(),
+        std::move(state.element),
+    });
+
+    state.element |= borderEmpty;
+    if (state.is_placeholder) {
+      state.element |= dim;
+    }
+
+    if (state.focused) {
+      state.element |= bgcolor(Color::Black);
+    } else {
+      state.element |= bgcolor(Color::Blue);
+    }
+
+    if (state.hovered) {
+      state.element |= bgcolor(Color::GrayDark);
+    }
+
+    return vbox({state.element, separatorEmpty()});
+  };
+
+  auto generateUiFromStyle = [&](InputOption style) {
+    auto first_name = new std::string();   // Leaked
+    auto middle_name = new std::string();  // Leaked
+    auto last_name = new std::string();    // Leaked
+    return Container::Vertical({
+               Input(first_name, "first name", style),
+               Input(middle_name, "middle name", style),
+               Input(last_name, "last name", style),
+           }) |
+           borderEmpty;
+  };
+
+  auto ui = Container::Horizontal({
+      generateUiFromStyle(style_1),
+      generateUiFromStyle(style_2),
+      generateUiFromStyle(style_3),
+      generateUiFromStyle(style_4),
+  });
+
+  auto screen = ScreenInteractive::TerminalOutput();
+  screen.Loop(ui);
+}

examples/component/linear_gradient_gallery.cpp

@@ -0,0 +1,55 @@
+// Copyright 2023 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <ftxui/component/component_base.hpp>  // for ComponentBase, Component
+#include <ftxui/dom/elements.hpp>  // for operator|, Element, flex, bgcolor, text, vbox, center
+#include <ftxui/dom/linear_gradient.hpp>  // for LinearGradient
+#include <ftxui/screen/color.hpp>         // for Color, Color::Blue, Color::Red
+#include <memory>                         // for __shared_ptr_access, shared_ptr
+#include <string>  // for allocator, operator+, char_traits, string, to_string
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"       // for Slider, Renderer, Vertical
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+
+int main() {
+  using namespace ftxui;
+  auto screen = ScreenInteractive::Fullscreen();
+
+  int angle = 180.f;
+  float start = 0.f;
+  float end = 1.f;
+
+  std::string slider_angle_text;
+  std::string slider_start_text;
+  std::string slider_end_text;
+
+  auto slider_angle = Slider(&slider_angle_text, &angle, 0, 360);
+  auto slider_start = Slider(&slider_start_text, &start, 0.f, 1.f, 0.05f);
+  auto slider_end = Slider(&slider_end_text, &end, 0.f, 1.f, 0.05f);
+
+  auto layout = Container::Vertical({
+      slider_angle,
+      slider_start,
+      slider_end,
+  });
+
+  auto renderer = Renderer(layout, [&] {
+    slider_angle_text = "angle = " + std::to_string(angle) + "°";
+    slider_start_text = "start = " + std::to_string(int(start * 100)) + "%";
+    slider_end_text = "end   = " + std::to_string(int(end * 100)) + "%";
+
+    auto background = text("Gradient") | center |
+                      bgcolor(LinearGradient()
+                                  .Angle(angle)
+                                  .Stop(Color::Blue, start)
+                                  .Stop(Color::Red, end));
+    return vbox({
+               background | flex,
+               layout->Render(),
+           }) |
+           flex;
+  });
+
+  screen.Loop(renderer);
+}

examples/component/maybe.cpp

@@ -1,17 +1,19 @@
-#include <memory>  // for shared_ptr
-#include <string>  // for string, basic_string, allocator
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <string>  // for string, allocator, basic_string
 #include <vector>  // for vector
 
 #include "ftxui/component/captured_mouse.hpp"  // for ftxui
 #include "ftxui/component/component.hpp"  // for operator|, Maybe, Checkbox, Radiobox, Renderer, Vertical
 #include "ftxui/component/component_base.hpp"      // for Component
 #include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
-#include "ftxui/dom/elements.hpp"  // for border, color, operator|, text, Element
+#include "ftxui/dom/elements.hpp"  // for Element, border, color, operator|, text
 #include "ftxui/screen/color.hpp"  // for Color, Color::Red
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::string> entries = {
       "entry 1",
       "entry 2",
@@ -37,7 +39,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::TerminalOutput();
   screen.Loop(layout);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <functional>  // for function
 #include <iostream>  // for basic_ostream::operator<<, operator<<, endl, basic_ostream, basic_ostream<>::__ostream_type, cout, ostream
 #include <string>    // for string, basic_string, allocator
@@ -8,7 +11,7 @@
 #include "ftxui/component/component_options.hpp"   // for MenuOption
 #include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto screen = ScreenInteractive::TerminalOutput();
 
@@ -21,13 +24,9 @@ int main(int argc, const char* argv[]) {
 
   MenuOption option;
   option.on_enter = screen.ExitLoopClosure();
-  auto menu = Menu(&entries, &selected, &option);
+  auto menu = Menu(&entries, &selected, option);
 
   screen.Loop(menu);
 
   std::cout << "Selected element = " << selected << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu2.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <functional>  // for function
 #include <memory>      // for allocator, __shared_ptr_access
 #include <string>      // for string, basic_string, operator+, to_string
@@ -10,7 +13,7 @@
 #include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
 #include "ftxui/dom/elements.hpp"  // for text, separator, bold, hcenter, vbox, hbox, gauge, Element, operator|, border
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto screen = ScreenInteractive::TerminalOutput();
 
@@ -27,9 +30,9 @@ int main(int argc, const char* argv[]) {
   int left_menu_selected = 0;
   int right_menu_selected = 0;
   Component left_menu_ =
-      Menu(&left_menu_entries, &left_menu_selected, &menu_option);
+      Menu(&left_menu_entries, &left_menu_selected, menu_option);
   Component right_menu_ =
-      Menu(&right_menu_entries, &right_menu_selected, &menu_option);
+      Menu(&right_menu_entries, &right_menu_selected, menu_option);
 
   Component container = Container::Horizontal({
       left_menu_,
@@ -74,7 +77,3 @@ int main(int argc, const char* argv[]) {
 
   screen.Loop(renderer);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu_entries.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <functional>  // for function
 #include <iostream>  // for basic_ostream::operator<<, operator<<, endl, basic_ostream, basic_ostream<>::__ostream_type, cout, ostream
 #include <memory>    // for allocator, shared_ptr, __shared_ptr_access
@@ -28,7 +31,7 @@ MenuEntryOption Colored(ftxui::Color c) {
   return option;
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::TerminalOutput();
 
   int selected = 0;
@@ -76,7 +79,3 @@ int main(int argc, const char* argv[]) {
 
   std::cout << "Selected element = " << selected << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu_entries_animated.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <iostream>  // for basic_ostream::operator<<, operator<<, endl, basic_ostream, basic_ostream<>::__ostream_type, cout, ostream
 #include <memory>    // for shared_ptr, __shared_ptr_access
 #include <string>    // for to_string, allocator
@@ -24,7 +27,7 @@ MenuEntryOption Colored(ftxui::Color c) {
   return option;
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::TerminalOutput();
 
   int selected = 0;
@@ -60,7 +63,3 @@ int main(int argc, const char* argv[]) {
 
   std::cout << "Selected element = " << selected << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu_in_frame.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for shared_ptr, __shared_ptr_access
 #include <string>  // for string, basic_string, operator+, to_string
 #include <vector>  // for vector
@@ -10,7 +13,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::string> entries;
   int selected = 0;
 
@@ -27,7 +30,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu_in_frame_horizontal.cpp

@@ -0,0 +1,30 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <memory>  // for shared_ptr, __shared_ptr_access
+#include <string>  // for string, basic_string, operator+, to_string
+#include <vector>  // for vector
+
+#include "ftxui/component/captured_mouse.hpp"      // for ftxui
+#include "ftxui/component/component.hpp"           // for Radiobox, Renderer
+#include "ftxui/component/component_base.hpp"      // for ComponentBase
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for operator|, Element, size, border, frame, HEIGHT, LESS_THAN
+
+using namespace ftxui;
+
+int main() {
+  std::vector<std::string> entries;
+  int selected = 0;
+
+  for (int i = 0; i < 100; ++i)
+    entries.push_back(std::to_string(i));
+  auto radiobox = Menu(&entries, &selected, MenuOption::Horizontal());
+  auto renderer = Renderer(
+      radiobox, [&] { return radiobox->Render() | hscroll_indicator | frame; });
+
+  auto screen = ScreenInteractive::FitComponent();
+  screen.Loop(renderer);
+
+  return 0;
+}

examples/component/menu_multiple.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <stdlib.h>  // for EXIT_SUCCESS
 #include <memory>    // for allocator, __shared_ptr_access
 #include <string>  // for string, operator+, basic_string, to_string, char_traits
@@ -17,7 +20,7 @@ Component Window(std::string title, Component component) {
   });
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   int menu_selected[] = {0, 0, 0};
   std::vector<std::vector<std::string>> menu_entries = {
       {
@@ -72,7 +75,3 @@ int main(int argc, const char* argv[]) {
   screen.Loop(global);
   return EXIT_SUCCESS;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu_style.cpp

@@ -1,14 +1,17 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <array>       // for array
 #include <chrono>      // for milliseconds
 #include <functional>  // for function
-#include <memory>      // for shared_ptr, __shared_ptr_access, allocator
-#include <string>      // for string, char_traits, basic_string, operator+
+#include <memory>      // for __shared_ptr_access, shared_ptr, allocator
+#include <string>      // for string, char_traits, operator+, basic_string
 #include <vector>      // for vector
 
 #include "ftxui/component/animation.hpp"  // for ElasticOut, Linear
 #include "ftxui/component/component.hpp"  // for Menu, Horizontal, Renderer, Vertical
 #include "ftxui/component/component_base.hpp"     // for ComponentBase
-#include "ftxui/component/component_options.hpp"  // for MenuOption, MenuEntryOption, AnimatedColorOption, AnimatedColorsOption, UnderlineOption
+#include "ftxui/component/component_options.hpp"  // for MenuOption, EntryState, MenuEntryOption, AnimatedColorOption, AnimatedColorsOption, UnderlineOption
 #include "ftxui/component/mouse.hpp"              // for ftxui
 #include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
 #include "ftxui/dom/elements.hpp"  // for separator, operator|, Element, text, bgcolor, hbox, bold, color, filler, border, vbox, borderDouble, dim, flex, hcenter
@@ -30,7 +33,7 @@ Component HMenu3(std::vector<std::string>* entries, int* selected);
 Component HMenu4(std::vector<std::string>* entries, int* selected);
 Component HMenu5(std::vector<std::string>* entries, int* selected);
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::TerminalOutput();
 
   std::vector<std::string> entries{
@@ -110,7 +113,7 @@ int main(int argc, const char* argv[]) {
 
 Component VMenu1(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::Vertical();
-  option.entries.transform = [](EntryState state) {
+  option.entries_option.transform = [](EntryState state) {
     state.label = (state.active ? "> " : "  ") + state.label;
     Element e = text(state.label);
     if (state.focused)
@@ -124,7 +127,7 @@ Component VMenu1(std::vector<std::string>* entries, int* selected) {
 
 Component VMenu2(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::Vertical();
-  option.entries.transform = [](EntryState state) {
+  option.entries_option.transform = [](EntryState state) {
     state.label += (state.active ? " <" : "  ");
     Element e = hbox(filler(), text(state.label));
     if (state.focused)
@@ -138,7 +141,7 @@ Component VMenu2(std::vector<std::string>* entries, int* selected) {
 
 Component VMenu3(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::Vertical();
-  option.entries.transform = [](EntryState state) {
+  option.entries_option.transform = [](EntryState state) {
     Element e = state.active ? text("[" + state.label + "]")
                              : text(" " + state.label + " ");
     if (state.focused)
@@ -155,7 +158,7 @@ Component VMenu3(std::vector<std::string>* entries, int* selected) {
 
 Component VMenu4(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::Vertical();
-  option.entries.transform = [](EntryState state) {
+  option.entries_option.transform = [](EntryState state) {
     if (state.active && state.focused) {
       return text(state.label) | color(Color::Yellow) | bgcolor(Color::Black) |
              bold;
@@ -175,7 +178,7 @@ Component VMenu4(std::vector<std::string>* entries, int* selected) {
 
 Component VMenu5(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::Vertical();
-  option.entries.transform = [](EntryState state) {
+  option.entries_option.transform = [](EntryState state) {
     auto element = text(state.label);
     if (state.active && state.focused) {
       return element | borderDouble;
@@ -201,19 +204,19 @@ Component VMenu6(std::vector<std::string>* entries, int* selected) {
 
 Component VMenu7(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::Vertical();
-  option.entries.animated_colors.foreground.enabled = true;
-  option.entries.animated_colors.background.enabled = true;
-  option.entries.animated_colors.background.active = Color::Red;
-  option.entries.animated_colors.background.inactive = Color::Black;
-  option.entries.animated_colors.foreground.active = Color::White;
-  option.entries.animated_colors.foreground.inactive = Color::Red;
+  option.entries_option.animated_colors.foreground.enabled = true;
+  option.entries_option.animated_colors.background.enabled = true;
+  option.entries_option.animated_colors.background.active = Color::Red;
+  option.entries_option.animated_colors.background.inactive = Color::Black;
+  option.entries_option.animated_colors.foreground.active = Color::White;
+  option.entries_option.animated_colors.foreground.inactive = Color::Red;
   return Menu(entries, selected, option);
 }
 
 Component VMenu8(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::Vertical();
-  option.entries.animated_colors.foreground.Set(Color::Red, Color::White,
-                                                std::chrono::milliseconds(500));
+  option.entries_option.animated_colors.foreground.Set(
+      Color::Red, Color::White, std::chrono::milliseconds(500));
   return Menu(entries, selected, option);
 }
 
@@ -240,7 +243,7 @@ Component HMenu5(std::vector<std::string>* entries, int* selected) {
   auto option = MenuOption::HorizontalAnimated();
   option.underline.SetAnimation(std::chrono::milliseconds(1500),
                                 animation::easing::ElasticOut);
-  option.entries.transform = [](EntryState state) {
+  option.entries_option.transform = [](EntryState state) {
     Element e = text(state.label) | hcenter | flex;
     if (state.active && state.focused)
       e = e | bold;
@@ -252,7 +255,3 @@ Component HMenu5(std::vector<std::string>* entries, int* selected) {
   option.underline.color_active = Color::Red;
   return Menu(entries, selected, option);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/menu_underline_animated_gallery.cpp

@@ -1,6 +1,9 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>  // for operator""ms, literals
-#include <memory>  // for shared_ptr, __shared_ptr_access, allocator
-#include <string>  // for string, basic_string, operator+, to_string
+#include <memory>  // for allocator, shared_ptr, __shared_ptr_access
+#include <string>  // for string, operator+, to_string, basic_string
 #include <vector>  // for vector
 
 #include "ftxui/component/animation.hpp"       // for BackOut, Duration
@@ -27,7 +30,7 @@ Component Text(const std::string& t) {
   return Renderer([t] { return text(t) | borderEmpty; });
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace std::literals;
   std::vector<std::string> tab_values{
       "Tab 1", "Tab 2", "Tab 3", "A very very long tab", "탭",
@@ -88,7 +91,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::TerminalOutput();
   screen.Loop(container);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/modal_dialog.cpp

@@ -1,94 +1,82 @@
-#include <memory>  // for allocator, shared_ptr, __shared_ptr_access
-#include <string>  // for string, basic_string, char_traits, operator+
-#include <vector>  // for vector
-
-#include "ftxui/component/captured_mouse.hpp"  // for ftxui
-#include "ftxui/component/component.hpp"  // for Button, Renderer, Horizontal, Tab
-#include "ftxui/component/component_base.hpp"      // for ComponentBase
-#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
-#include "ftxui/dom/elements.hpp"  // for operator|, Element, filler, text, hbox, separator, center, vbox, bold, border, clear_under, dbox, size, GREATER_THAN, HEIGHT
-
-int main(int argc, const char* argv[]) {
-  using namespace ftxui;
-  auto screen = ScreenInteractive::TerminalOutput();
-
-  // There are two layers. One at depth = 0 and the modal window at depth = 1;
-  int depth = 0;
-
-  // The current rating of FTXUI.
-  std::string rating = "3/5 stars";
-
-  // At depth=0, two buttons. One for rating FTXUI and one for quitting.
-  auto button_rate_ftxui = Button("Rate FTXUI", [&] { depth = 1; });
-  auto button_quit = Button("Quit", screen.ExitLoopClosure());
-
-  auto depth_0_container = Container::Horizontal({
-      button_rate_ftxui,
-      button_quit,
-  });
-  auto depth_0_renderer = Renderer(depth_0_container, [&] {
-    return vbox({
-               text("Modal dialog example"),
-               separator(),
-               text("☆☆☆ FTXUI:" + rating + " ☆☆☆") | bold,
-               filler(),
-               hbox({
-                   button_rate_ftxui->Render(),
-                   filler(),
-                   button_quit->Render(),
-               }),
-           }) |
-           border | size(HEIGHT, GREATER_THAN, 18) | center;
-  });
-
-  // At depth=1, The "modal" window.
-  std::vector<std::string> rating_labels = {
-      "1/5 stars", "2/5 stars", "3/5 stars", "4/5 stars", "5/5 stars",
-  };
-  auto on_rating = [&](std::string new_rating) {
-    rating = new_rating;
-    depth = 0;
-  };
-  auto depth_1_container = Container::Horizontal({
-      Button(&rating_labels[0], [&] { on_rating(rating_labels[0]); }),
-      Button(&rating_labels[1], [&] { on_rating(rating_labels[1]); }),
-      Button(&rating_labels[2], [&] { on_rating(rating_labels[2]); }),
-      Button(&rating_labels[3], [&] { on_rating(rating_labels[3]); }),
-      Button(&rating_labels[4], [&] { on_rating(rating_labels[4]); }),
-  });
-
-  auto depth_1_renderer = Renderer(depth_1_container, [&] {
-    return vbox({
-               text("Do you like FTXUI?"),
-               separator(),
-               hbox(depth_1_container->Render()),
-           }) |
-           border;
-  });
-
-  auto main_container = Container::Tab(
-      {
-          depth_0_renderer,
-          depth_1_renderer,
-      },
-      &depth);
-
-  auto main_renderer = Renderer(main_container, [&] {
-    Element document = depth_0_renderer->Render();
-
-    if (depth == 1) {
-      document = dbox({
-          document,
-          depth_1_renderer->Render() | clear_under | center,
-      });
-    }
-    return document;
-  });
-
-  screen.Loop(main_renderer);
-  return 0;
-}
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Copyright 2022 Arthur Sonzogni. All rights reserved.
 // Use of this source code is governed by the MIT license that can be found in
 // the LICENSE file.
+#include <ftxui/component/component_options.hpp>  // for ButtonOption
+#include <ftxui/component/mouse.hpp>              // for ftxui
+#include <functional>                             // for function
+#include <memory>                                 // for allocator, shared_ptr
+
+#include "ftxui/component/component.hpp"  // for Button, operator|=, Renderer, Vertical, Modal
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive, Component
+#include "ftxui/dom/elements.hpp"  // for operator|, separator, text, size, Element, vbox, border, GREATER_THAN, WIDTH, center, HEIGHT
+
+using namespace ftxui;
+
+auto button_style = ButtonOption::Animated();
+
+// Definition of the main component. The details are not important.
+Component MainComponent(std::function<void()> show_modal,
+                        std::function<void()> exit) {
+  auto component = Container::Vertical({
+      Button("Show modal", show_modal, button_style),
+      Button("Quit", exit, button_style),
+  });
+  // Polish how the two buttons are rendered:
+  component |= Renderer([&](Element inner) {
+    return vbox({
+               text("Main component"),
+               separator(),
+               inner,
+           })                                //
+           | size(WIDTH, GREATER_THAN, 15)   //
+           | size(HEIGHT, GREATER_THAN, 15)  //
+           | border                          //
+           | center;                         //
+  });
+  return component;
+}
+
+// Definition of the modal component. The details are not important.
+Component ModalComponent(std::function<void()> do_nothing,
+                         std::function<void()> hide_modal) {
+  auto component = Container::Vertical({
+      Button("Do nothing", do_nothing, button_style),
+      Button("Quit modal", hide_modal, button_style),
+  });
+  // Polish how the two buttons are rendered:
+  component |= Renderer([&](Element inner) {
+    return vbox({
+               text("Modal component "),
+               separator(),
+               inner,
+           })                               //
+           | size(WIDTH, GREATER_THAN, 30)  //
+           | border;                        //
+  });
+  return component;
+}
+
+int main(int argc, const char* argv[]) {
+  auto screen = ScreenInteractive::TerminalOutput();
+
+  // State of the application:
+  bool modal_shown = false;
+
+  // Some actions modifying the state:
+  auto show_modal = [&] { modal_shown = true; };
+  auto hide_modal = [&] { modal_shown = false; };
+  auto exit = screen.ExitLoopClosure();
+  auto do_nothing = [&] {};
+
+  // Instanciate the main and modal components:
+  auto main_component = MainComponent(show_modal, exit);
+  auto modal_component = ModalComponent(do_nothing, hide_modal);
+
+  // Use the `Modal` function to use together the main component and its modal
+  // window. The |modal_shown| boolean controls whether the modal is shown or
+  // not.
+  main_component |= Modal(modal_component, &modal_shown);
+
+  screen.Loop(main_component);
+  return 0;
+}

examples/component/modal_dialog_custom.cpp

@@ -0,0 +1,93 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <memory>  // for allocator, shared_ptr, __shared_ptr_access
+#include <string>  // for string, basic_string, char_traits, operator+
+#include <vector>  // for vector
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"  // for Button, Renderer, Horizontal, Tab
+#include "ftxui/component/component_base.hpp"      // for ComponentBase
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for operator|, Element, filler, text, hbox, separator, center, vbox, bold, border, clear_under, dbox, size, GREATER_THAN, HEIGHT
+
+int main() {
+  using namespace ftxui;
+  auto screen = ScreenInteractive::TerminalOutput();
+
+  // There are two layers. One at depth = 0 and the modal window at depth = 1;
+  int depth = 0;
+
+  // The current rating of FTXUI.
+  std::string rating = "3/5 stars";
+
+  // At depth=0, two buttons. One for rating FTXUI and one for quitting.
+  auto button_rate_ftxui = Button("Rate FTXUI", [&] { depth = 1; });
+  auto button_quit = Button("Quit", screen.ExitLoopClosure());
+
+  auto depth_0_container = Container::Horizontal({
+      button_rate_ftxui,
+      button_quit,
+  });
+  auto depth_0_renderer = Renderer(depth_0_container, [&] {
+    return vbox({
+               text("Modal dialog example"),
+               separator(),
+               text("☆☆☆ FTXUI:" + rating + " ☆☆☆") | bold,
+               filler(),
+               hbox({
+                   button_rate_ftxui->Render(),
+                   filler(),
+                   button_quit->Render(),
+               }),
+           }) |
+           border | size(HEIGHT, GREATER_THAN, 18) | center;
+  });
+
+  // At depth=1, The "modal" window.
+  std::vector<std::string> rating_labels = {
+      "1/5 stars", "2/5 stars", "3/5 stars", "4/5 stars", "5/5 stars",
+  };
+  auto on_rating = [&](std::string new_rating) {
+    rating = new_rating;
+    depth = 0;
+  };
+  auto depth_1_container = Container::Horizontal({
+      Button(&rating_labels[0], [&] { on_rating(rating_labels[0]); }),
+      Button(&rating_labels[1], [&] { on_rating(rating_labels[1]); }),
+      Button(&rating_labels[2], [&] { on_rating(rating_labels[2]); }),
+      Button(&rating_labels[3], [&] { on_rating(rating_labels[3]); }),
+      Button(&rating_labels[4], [&] { on_rating(rating_labels[4]); }),
+  });
+
+  auto depth_1_renderer = Renderer(depth_1_container, [&] {
+    return vbox({
+               text("Do you like FTXUI?"),
+               separator(),
+               hbox(depth_1_container->Render()),
+           }) |
+           border;
+  });
+
+  auto main_container = Container::Tab(
+      {
+          depth_0_renderer,
+          depth_1_renderer,
+      },
+      &depth);
+
+  auto main_renderer = Renderer(main_container, [&] {
+    Element document = depth_0_renderer->Render();
+
+    if (depth == 1) {
+      document = dbox({
+          document,
+          depth_1_renderer->Render() | clear_under | center,
+      });
+    }
+    return document;
+  });
+
+  screen.Loop(main_renderer);
+  return 0;
+}

examples/component/nested_screen.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, shared_ptr, __shared_ptr_access
 #include <string>  // for operator+, string, char_traits, basic_string
 
@@ -35,7 +38,7 @@ void Nested(std::string path) {
   screen.Loop(renderer);
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::FitComponent();
   auto button_quit = Button("Quit", screen.ExitLoopClosure());
   auto button_nested = Button("Nested", [] { Nested(""); });
@@ -45,7 +48,3 @@ int main(int argc, const char* argv[]) {
   }));
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/print_key_press.cpp

@@ -18,75 +18,48 @@
 
 using namespace ftxui;
 
-std::string Stringify(Event event) {
-  std::string out;
-  for (auto& it : event.input())
-    out += " " + std::to_string((unsigned int)it);
-
-  out = "(" + out + " ) -> ";
-  if (event.is_character()) {
-    out += "character(" + event.character() + ")";
-  } else if (event.is_mouse()) {
-    out += "mouse";
-    switch (event.mouse().button) {
-      case Mouse::Left:
-        out += "_left";
-        break;
-      case Mouse::Middle:
-        out += "_middle";
-        break;
-      case Mouse::Right:
-        out += "_right";
-        break;
-      case Mouse::None:
-        out += "_none";
-        break;
-      case Mouse::WheelUp:
-        out += "_wheel_up";
-        break;
-      case Mouse::WheelDown:
-        out += "_wheel_down";
-        break;
-    }
-    switch (event.mouse().motion) {
-      case Mouse::Pressed:
-        out += "_pressed";
-        break;
-      case Mouse::Released:
-        out += "_released";
-        break;
-    }
-    if (event.mouse().control)
-      out += "_control";
-    if (event.mouse().shift)
-      out += "_shift";
-    if (event.mouse().meta)
-      out += "_meta";
-
-    out += "(" +  //
-           std::to_string(event.mouse().x) + "," +
-           std::to_string(event.mouse().y) + ")";
-  } else {
-    out += "(special)";
+std::string Code(Event event) {
+  std::string codes;
+  for (auto& it : event.input()) {
+    codes += " " + std::to_string((unsigned int)it);
   }
-  return out;
+  return codes;
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::TerminalOutput();
 
   std::vector<Event> keys;
 
-  auto component = Renderer([&] {
-    Elements children;
-    for (size_t i = std::max(0, (int)keys.size() - 20); i < keys.size(); ++i)
-      children.push_back(text(Stringify(keys[i])));
-    return window(text("keys"), vbox(std::move(children)));
+  auto left_column = Renderer([&] {
+    Elements children = {
+        text("Codes"),
+        separator(),
+    };
+    for (size_t i = std::max(0, (int)keys.size() - 20); i < keys.size(); ++i) {
+      children.push_back(text(Code(keys[i])));
+    }
+    return vbox(children);
   });
 
+  auto right_column = Renderer([&] {
+    Elements children = {
+        text("Event"),
+        separator(),
+    };
+    for (size_t i = std::max(0, (int)keys.size() - 20); i < keys.size(); ++i) {
+      children.push_back(text(keys[i].DebugString()));
+    }
+    return vbox(children);
+  });
+
+  int split_size = 40;
+  auto component = ResizableSplitLeft(left_column, right_column, &split_size);
+  component |= border;
+
   component |= CatchEvent([&](Event event) {
     keys.push_back(event);
-    return true;
+    return false;
   });
 
   screen.Loop(component);

examples/component/radiobox.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <string>  // for string, allocator, basic_string
 #include <vector>  // for vector
 
@@ -7,7 +10,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::string> radiobox_list = {
       "Use gcc",
       "Use clang",
@@ -20,7 +23,3 @@ int main(int argc, const char* argv[]) {
   screen.Loop(Radiobox(&radiobox_list, &selected));
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/radiobox_in_frame.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for shared_ptr, __shared_ptr_access
 #include <string>  // for string, basic_string, operator+, to_string
 #include <vector>  // for vector
@@ -10,7 +13,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::string> entries;
   int selected = 0;
 
@@ -27,7 +30,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/renderer.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for shared_ptr, allocator, __shared_ptr_access
 
 #include "ftxui/component/captured_mouse.hpp"  // for ftxui
@@ -7,7 +10,7 @@
 #include "ftxui/dom/elements.hpp"  // for operator|, Element, text, bold, border, center, color
 #include "ftxui/screen/color.hpp"  // for Color, Color::Red
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto screen = ScreenInteractive::FitComponent();
 
@@ -43,7 +46,3 @@ int main(int argc, const char* argv[]) {
       renderer_wrap,
   }));
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/resizable_split.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for shared_ptr, allocator, __shared_ptr_access
 
 #include "ftxui/component/captured_mouse.hpp"  // for ftxui
@@ -8,7 +11,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::Fullscreen();
 
   auto middle = Renderer([] { return text("middle") | center; });
@@ -33,7 +36,3 @@ int main(int argc, const char* argv[]) {
 
   screen.Loop(renderer);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/scrollbar.cpp

@@ -0,0 +1,112 @@
+// Copyright 2023 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <ftxui/component/component.hpp>
+#include <ftxui/component/screen_interactive.hpp>
+
+using namespace ftxui;
+
+Component DummyWindowContent() {
+  class Impl : public ComponentBase {
+   private:
+    float scroll_x = 0.1;
+    float scroll_y = 0.1;
+
+   public:
+    Impl() {
+      auto content = Renderer([=] {
+        const std::string lorem =
+            "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed "
+            "do eiusmod tempor incididunt ut labore et dolore magna "
+            "aliqua. Ut enim ad minim veniam, quis nostrud exercitation "
+            "ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis "
+            "aute irure dolor in reprehenderit in voluptate velit esse "
+            "cillum dolore eu fugiat nulla pariatur. Excepteur sint "
+            "occaecat cupidatat non proident, sunt in culpa qui officia "
+            "deserunt mollit anim id est laborum.";
+        return vbox({
+            text(lorem.substr(0, -1)),   text(lorem.substr(5, -1)),   text(""),
+            text(lorem.substr(10, -1)),  text(lorem.substr(15, -1)),  text(""),
+            text(lorem.substr(20, -1)),  text(lorem.substr(25, -1)),  text(""),
+            text(lorem.substr(30, -1)),  text(lorem.substr(35, -1)),  text(""),
+            text(lorem.substr(40, -1)),  text(lorem.substr(45, -1)),  text(""),
+            text(lorem.substr(50, -1)),  text(lorem.substr(55, -1)),  text(""),
+            text(lorem.substr(60, -1)),  text(lorem.substr(65, -1)),  text(""),
+            text(lorem.substr(70, -1)),  text(lorem.substr(75, -1)),  text(""),
+            text(lorem.substr(80, -1)),  text(lorem.substr(85, -1)),  text(""),
+            text(lorem.substr(90, -1)),  text(lorem.substr(95, -1)),  text(""),
+            text(lorem.substr(100, -1)), text(lorem.substr(105, -1)), text(""),
+            text(lorem.substr(110, -1)), text(lorem.substr(115, -1)), text(""),
+            text(lorem.substr(120, -1)), text(lorem.substr(125, -1)), text(""),
+            text(lorem.substr(130, -1)), text(lorem.substr(135, -1)), text(""),
+            text(lorem.substr(140, -1)),
+        });
+      });
+
+      auto scrollable_content = Renderer(content, [&, content] {
+        return content->Render() | focusPositionRelative(scroll_x, scroll_y) |
+               frame | flex;
+      });
+
+      SliderOption<float> option_x;
+      option_x.value = &scroll_x;
+      option_x.min = 0.f;
+      option_x.max = 1.f;
+      option_x.increment = 0.1f;
+      option_x.direction = Direction::Right;
+      option_x.color_active = Color::Blue;
+      option_x.color_inactive = Color::BlueLight;
+      auto scrollbar_x = Slider(option_x);
+
+      SliderOption<float> option_y;
+      option_y.value = &scroll_y;
+      option_y.min = 0.f;
+      option_y.max = 1.f;
+      option_y.increment = 0.1f;
+      option_y.direction = Direction::Down;
+      option_y.color_active = Color::Yellow;
+      option_y.color_inactive = Color::YellowLight;
+      auto scrollbar_y = Slider(option_y);
+
+      Add(Container::Vertical({
+          Container::Horizontal({
+              scrollable_content,
+              scrollbar_y,
+          }) | flex,
+          Container::Horizontal({
+              scrollbar_x,
+              Renderer([] { return text(L"x"); }),
+          }),
+      }));
+    }
+  };
+  return Make<Impl>();
+}
+
+int main() {
+  auto window_1 = Window({
+      .inner = DummyWindowContent(),
+      .title = "First window",
+      .width = 80,
+      .height = 30,
+  });
+
+  auto window_2 = Window({
+      .inner = DummyWindowContent(),
+      .title = "My window",
+      .left = 40,
+      .top = 20,
+      .width = 80,
+      .height = 30,
+  });
+
+  auto window_container = Container::Stacked({
+      window_1,
+      window_2,
+  });
+
+  auto screen = ScreenInteractive::Fullscreen();
+  screen.Loop(window_container);
+
+  return EXIT_SUCCESS;
+}

examples/component/selection.cpp

@@ -0,0 +1,87 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <string>  // for char_traits, operator+, string, basic_string
+
+#include "ftxui/component/component.hpp"       // for Input, Renderer, Vertical
+#include "ftxui/component/component_base.hpp"  // for ComponentBase
+#include "ftxui/component/component_options.hpp"  // for InputOption
+#include "ftxui/component/screen_interactive.hpp"  // for Component, ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for text, hbox, separator, Element, operator|, vbox, border
+#include "ftxui/util/ref.hpp"  // for Ref
+
+using namespace ftxui;
+
+Element LoremIpsum() {
+  return vbox({
+      text("FTXUI: A powerful library for building user interfaces."),
+      text("Enjoy a rich set of components and a declarative style."),
+      text("Create beautiful and responsive UIs with minimal effort."),
+      text("Join the community and experience the power of FTXUI."),
+  });
+}
+
+int main() {
+  auto screen = ScreenInteractive::TerminalOutput();
+
+  auto quit =
+      Button("Quit", screen.ExitLoopClosure(), ButtonOption::Animated());
+
+  int selection_change_counter = 0;
+  std::string selection_content = "";
+  screen.SelectionChange([&] {
+    selection_change_counter++;
+    selection_content = screen.GetSelection();
+  });
+
+  // The components:
+  auto renderer = Renderer(quit, [&] {
+    return vbox({
+        text("Select changed: " + std::to_string(selection_change_counter) +
+             " times"),
+        text("Currently selected: "),
+        paragraph(selection_content) | vscroll_indicator | frame | border |
+            size(HEIGHT, EQUAL, 10),
+        window(text("Horizontal split"), hbox({
+                                             LoremIpsum(),
+                                             separator(),
+                                             LoremIpsum(),
+                                             separator(),
+                                             LoremIpsum(),
+                                         })),
+        window(text("Vertical split"), vbox({
+                                           LoremIpsum(),
+                                           separator(),
+                                           LoremIpsum(),
+                                           separator(),
+                                           LoremIpsum(),
+                                       })),
+        window(text("Grid split with different style"),
+               vbox({
+                   hbox({
+                       LoremIpsum(),
+                       separator(),
+                       LoremIpsum()                                   //
+                           | selectionBackgroundColor(Color::Yellow)  //
+                           | selectionColor(Color::Black)             //
+                           | selectionStyleReset,
+                       separator(),
+                       LoremIpsum() | selectionColor(Color::Blue),
+                   }),
+                   separator(),
+                   hbox({
+                       LoremIpsum() | selectionColor(Color::Red),
+                       separator(),
+                       LoremIpsum() | selectionStyle([](Pixel& pixel) {
+                         pixel.underlined_double = true;
+                       }),
+                       separator(),
+                       LoremIpsum(),
+                   }),
+               })),
+        quit->Render(),
+    });
+  });
+
+  screen.Loop(renderer);
+}

examples/component/slider.cpp

@@ -4,7 +4,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   auto screen = ScreenInteractive::TerminalOutput();
   int value = 50;
   auto slider = Slider("Value:", &value, 0, 100, 1);

examples/component/slider_direction.cpp

@@ -0,0 +1,49 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <array>                                  // for array
+#include <cmath>                                  // for sin
+#include <ftxui/component/component_base.hpp>     // for ComponentBase
+#include <ftxui/component/component_options.hpp>  // for SliderOption
+#include <ftxui/dom/direction.hpp>  // for Direction, Direction::Up
+#include <ftxui/dom/elements.hpp>   // for size, GREATER_THAN, HEIGHT
+#include <ftxui/util/ref.hpp>       // for ConstRef, Ref
+#include <memory>                   // for shared_ptr, __shared_ptr_access
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"  // for Horizontal, Slider, operator|=
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+
+using namespace ftxui;
+
+int main() {
+  auto screen = ScreenInteractive::TerminalOutput();
+  std::array<int, 30> values;
+  for (int i = 0; i < values.size(); ++i) {
+    values[i] = 50 + 20 * std::sin(i * 0.3);
+  }
+
+  auto layout_horizontal = Container::Horizontal({});
+  for (auto& value : values) {
+    // In C++17:
+    SliderOption<int> option;
+    option.value = &value;
+    option.max = 100;
+    option.increment = 5;
+    option.direction = Direction::Up;
+    layout_horizontal->Add(Slider<int>(option));
+
+    /* In C++20:
+    layout_horizontal->Add(Slider<int>({
+        .value = &values[i],
+        .max = 100,
+        .increment = 5,
+        .direction = Direction::Up,
+    }));
+    */
+  }
+
+  layout_horizontal |= size(HEIGHT, GREATER_THAN, 20);
+
+  screen.Loop(layout_horizontal);
+}

examples/component/slider_rgb.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, shared_ptr, __shared_ptr_access
 #include <string>  // for char_traits, operator+, to_string
 
@@ -23,7 +26,7 @@ Element ColorString(int red, int green, int blue) {
   );
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   int red = 128;
   int green = 25;
   int blue = 100;
@@ -56,7 +59,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::TerminalOutput();
   screen.Loop(renderer);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/tab_horizontal.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, __shared_ptr_access, shared_ptr
 #include <string>  // for string, basic_string
 #include <vector>  // for vector
@@ -10,7 +13,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::string> tab_values{
       "tab_1",
       "tab_2",
@@ -65,7 +68,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::TerminalOutput();
   screen.Loop(renderer);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/tab_vertical.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, __shared_ptr_access, shared_ptr
 #include <string>  // for string, basic_string
 #include <vector>  // for vector
@@ -10,7 +13,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::string> tab_values{
       "tab_1",
       "tab_2",
@@ -65,7 +68,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::TerminalOutput();
   screen.Loop(renderer);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/textarea.cpp

@@ -0,0 +1,34 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <memory>  // for allocator, __shared_ptr_access, shared_ptr
+#include <string>  // for string
+
+#include "ftxui/component/captured_mouse.hpp"  // for ftxui
+#include "ftxui/component/component.hpp"  // for Input, Renderer, ResizableSplitLeft
+#include "ftxui/component/component_base.hpp"  // for ComponentBase, Component
+#include "ftxui/component/screen_interactive.hpp"  // for ScreenInteractive
+#include "ftxui/dom/elements.hpp"  // for operator|, separator, text, Element, flex, vbox, border
+
+int main() {
+  using namespace ftxui;
+
+  std::string content_1;
+  std::string content_2;
+  auto textarea_1 = Input(&content_1);
+  auto textarea_2 = Input(&content_2);
+  int size = 50;
+  auto layout = ResizableSplitLeft(textarea_1, textarea_2, &size);
+
+  auto component = Renderer(layout, [&] {
+    return vbox({
+               text("Input:"),
+               separator(),
+               layout->Render() | flex,
+           }) |
+           border;
+  });
+
+  auto screen = ScreenInteractive::Fullscreen();
+  screen.Loop(component);
+}

examples/component/toggle.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <memory>  // for allocator, __shared_ptr_access
 #include <string>  // for string, basic_string
 #include <vector>  // for vector
@@ -10,7 +13,7 @@
 
 using namespace ftxui;
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::string> toggle_1_entries = {
       "On",
       "Off",
@@ -59,7 +62,3 @@ int main(int argc, const char* argv[]) {
   auto screen = ScreenInteractive::TerminalOutput();
   screen.Loop(renderer);
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/component/window.cpp

@@ -0,0 +1,88 @@
+// Copyright 2023 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <ftxui/component/component.hpp>
+#include <ftxui/component/screen_interactive.hpp>
+
+using namespace ftxui;
+
+Component DummyWindowContent() {
+  class Impl : public ComponentBase {
+   private:
+    bool checked[3] = {false, false, false};
+    float slider = 50;
+
+   public:
+    Impl() {
+      Add(Container::Vertical({
+          Checkbox("Check me", &checked[0]),
+          Checkbox("Check me", &checked[1]),
+          Checkbox("Check me", &checked[2]),
+          Slider("Slider", &slider, 0.f, 100.f),
+      }));
+    }
+  };
+  return Make<Impl>();
+}
+
+int main() {
+  int window_1_left = 20;
+  int window_1_top = 10;
+  int window_1_width = 40;
+  int window_1_height = 20;
+
+  auto window_1 = Window({
+      .inner = DummyWindowContent(),
+      .title = "First window",
+      .left = &window_1_left,
+      .top = &window_1_top,
+      .width = &window_1_width,
+      .height = &window_1_height,
+  });
+
+  auto window_2 = Window({
+      .inner = DummyWindowContent(),
+      .title = "My window",
+      .left = 40,
+      .top = 20,
+  });
+
+  auto window_3 = Window({
+      .inner = DummyWindowContent(),
+      .title = "My window",
+      .left = 60,
+      .top = 30,
+  });
+
+  auto window_4 = Window({
+      .inner = DummyWindowContent(),
+  });
+
+  auto window_5 = Window({});
+
+  auto window_container = Container::Stacked({
+      window_1,
+      window_2,
+      window_3,
+      window_4,
+      window_5,
+  });
+
+  auto display_win_1 = Renderer([&] {
+    return text("window_1: " +  //
+                std::to_string(window_1_width) + "x" +
+                std::to_string(window_1_height) + " + " +
+                std::to_string(window_1_left) + "," +
+                std::to_string(window_1_top));
+  });
+
+  auto layout = Container::Vertical({
+      display_win_1,
+      window_container,
+  });
+
+  auto screen = ScreenInteractive::Fullscreen();
+  screen.Loop(layout);
+
+  return EXIT_SUCCESS;
+}

examples/component/with_restored_io.cpp

@@ -1,3 +1,6 @@
+// Copyright 2022 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <cstdlib>   // for system, EXIT_SUCCESS
 #include <iostream>  // for operator<<, basic_ostream, basic_ostream::operator<<, cout, endl, flush, ostream, basic_ostream<>::__ostream_type, cin
 #include <memory>    // for shared_ptr, __shared_ptr_access, allocator
@@ -55,7 +58,3 @@ int main() {
   screen.Loop(renderer);
   return EXIT_SUCCESS;
 }
-
-// Copyright 2022 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/CMakeLists.txt

@@ -1,19 +1,21 @@
 set(DIRECTORY_LIB dom)
 
 example(border)
+example(border_colored)
 example(border_style)
+example(canvas)
 example(color_gallery)
 example(color_info_palette256)
 example(color_truecolor_HSV)
 example(color_truecolor_RGB)
 example(dbox)
-example(canvas)
 example(gauge)
 example(gauge_direction)
 example(graph)
 example(gridbox)
 example(hflow)
 example(html_like)
+example(linear_gradient)
 example(package_manager)
 example(paragraph)
 example(separator)
@@ -25,9 +27,12 @@ example(style_bold)
 example(style_color)
 example(style_dim)
 example(style_gallery)
+example(style_hyperlink)
 example(style_inverted)
+example(style_italic)
+example(style_strikethrough)
 example(style_underlined)
+example(style_underlined_double)
 example(table)
 example(vbox_hbox)
 example(vflow)
-example(window)

examples/dom/border.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <stdlib.h>                // for EXIT_SUCCESS
 #include <ftxui/dom/elements.hpp>  // for text, operator|, vbox, border, Element, Fit, hbox
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
@@ -33,7 +36,3 @@ int main() {
   screen.Print();
   return EXIT_SUCCESS;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/border_colored.cpp

@@ -0,0 +1,39 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <ftxui/dom/elements.hpp>  // for operator|, text, Element, Fit, borderDouble, borderHeavy, borderLight, borderRounded, vbox
+#include <ftxui/screen/screen.hpp>  // for Screen
+#include <iostream>                 // for endl, cout, ostream
+#include <memory>                   // for allocator
+
+#include "ftxui/dom/node.hpp"      // for Render
+#include "ftxui/screen/color.hpp"  // for ftxui
+
+int main() {
+  using namespace ftxui;
+
+  auto make_boxed = [] {
+    return vbox({
+        text("borderLight") | borderStyled(LIGHT, Color::Red),
+        text("borderDashed") | borderStyled(DASHED, Color::Green),
+        text("borderHeavy") | borderStyled(HEAVY, Color::Blue),
+        text("borderDouble") | borderStyled(DOUBLE, Color::Yellow),
+        text("borderRounded") | borderStyled(ROUNDED, Color::Cyan),
+    });
+  };
+
+  auto document = hbox({
+                      make_boxed(),
+                      separator() | color(Color::Red),
+                      make_boxed(),
+                      separator() | color(Color::Red),
+                      make_boxed(),
+                  }) |
+                  borderStyled(ROUNDED, Color::Red);
+
+  auto screen =
+      Screen::Create(Dimension::Fit(document), Dimension::Fit(document));
+  Render(screen, document);
+  screen.Print();
+  std::cout << std::endl;
+}

examples/dom/border_style.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for operator|, text, Element, Fit, borderDouble, borderHeavy, borderLight, borderRounded, vbox
 #include <ftxui/screen/screen.hpp>  // for Screen
 #include <iostream>                 // for endl, cout, ostream
@@ -6,11 +9,12 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   auto document = vbox({
       text("borderLight") | borderLight,
+      text("borderDashed") | borderDashed,
       text("borderHeavy") | borderHeavy,
       text("borderDouble") | borderDouble,
       text("borderRounded") | borderRounded,
@@ -22,7 +26,3 @@ int main(int argc, const char* argv[]) {
   screen.Print();
   std::cout << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/canvas.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <stdio.h>                 // for getchar
 #include <cmath>                   // for cos
 #include <ftxui/dom/elements.hpp>  // for Fit, canvas, operator|, border, Element
@@ -8,7 +11,7 @@
 #include "ftxui/dom/node.hpp"    // for Render
 #include "ftxui/screen/color.hpp"  // for Color, Color::Red, Color::Blue, Color::Green, ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   auto c = Canvas(100, 100);
@@ -43,7 +46,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/color_gallery.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/screen/color_info.hpp>  // for ColorInfo
 #include <ftxui/screen/screen.hpp>      // for Full, Screen
 #include <ftxui/screen/terminal.hpp>  // for ColorSupport, Color, Palette16, Palette256, TrueColor
@@ -136,7 +139,3 @@ int main() {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/color_info_palette256.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for text, bgcolor, hbox, operator|, Elements, Fit, vbox, Element
 #include <ftxui/screen/color_info.hpp>  // for ColorInfo
 #include <ftxui/screen/screen.hpp>      // for Full, Screen
@@ -10,7 +13,7 @@
 using namespace ftxui;
 #include "./color_info_sorted_2d.ipp"  // for ColorInfoSorted2D
 
-int main(int argc, const char* argv[]) {
+int main() {
   std::vector<std::vector<ColorInfo>> info_columns = ColorInfoSorted2D();
 
   // Draw every columns
@@ -34,7 +37,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/color_truecolor_HSV.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for operator|, Elements, Fit, bgcolor, color, hbox, text, vbox, Element
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <memory>                   // for allocator
@@ -6,7 +9,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for Color, ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   int saturation = 255;
@@ -30,7 +33,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/color_truecolor_RGB.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for hbox, text, bgcolor, operator|, vbox, Elements, window, Element, Fit
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <memory>                   // for allocator
@@ -6,7 +9,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for Color, ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   int saturation = 255;
@@ -49,7 +52,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/dbox.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for text, operator|, border, Element, vbox, center, Fit, dbox
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <memory>                   // for allocator
@@ -5,7 +8,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto document = dbox({
       vbox({
@@ -24,7 +27,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/gauge.cpp

@@ -1,14 +1,17 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>                  // for operator""s, chrono_literals
 #include <ftxui/dom/elements.hpp>  // for text, gauge, operator|, flex, hbox, Element
 #include <ftxui/screen/screen.hpp>  // for Screen
 #include <iostream>                 // for cout, endl, ostream
-#include <string>  // for allocator, operator+, char_traits, operator<<, string, to_string, basic_string
+#include <string>  // for allocator, char_traits, operator+, operator<<, string, to_string, basic_string
 #include <thread>  // for sleep_for
 
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   using namespace std::chrono_literals;
 
@@ -31,7 +34,3 @@ int main(int argc, const char* argv[]) {
   }
   std::cout << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/gauge_direction.cpp

@@ -1,14 +1,17 @@
+// Copyright 2022 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>                  // for operator""s, chrono_literals
-#include <ftxui/dom/elements.hpp>  // for text, gauge, operator|, flex, hbox, Element
+#include <ftxui/dom/elements.hpp>  // for filler, operator|, separator, text, border, Element, vbox, vtext, hbox, center, gaugeDown, gaugeLeft, gaugeRight, gaugeUp
 #include <ftxui/screen/screen.hpp>  // for Screen
 #include <iostream>                 // for cout, endl, ostream
-#include <string>  // for allocator, operator+, char_traits, operator<<, string, to_string, basic_string
+#include <string>  // for allocator, operator+, operator<<, string, to_string
 #include <thread>  // for sleep_for
 
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   using namespace std::chrono_literals;
 
@@ -73,7 +76,3 @@ int main(int argc, const char* argv[]) {
   }
   std::cout << std::endl;
 }
-
-// Copyright 2022 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/graph.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>                  // for operator""s, chrono_literals
 #include <cmath>                   // for sin
 #include <ftxui/dom/elements.hpp>  // for graph, operator|, separator, color, Element, vbox, flex, inverted, operator|=, Fit, hbox, size, border, GREATER_THAN, HEIGHT
@@ -80,7 +83,3 @@ int main() {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/gridbox.cpp

@@ -1,3 +1,6 @@
+// Copyright 2021 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <stdio.h>  // for getchar
 #include <ftxui/dom/elements.hpp>  // for Elements, gridbox, Fit, operator|, text, border, Element
 #include <ftxui/screen/screen.hpp>  // for Screen
@@ -6,7 +9,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto cell = [](const char* t) { return text(t) | border; };
   auto document =  //
@@ -43,7 +46,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2021 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/hflow.cpp

@@ -1,13 +1,15 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <stdio.h>                 // for getchar
 #include <ftxui/dom/elements.hpp>  // for operator|, size, Element, text, hcenter, Decorator, Fit, WIDTH, hflow, window, EQUAL, GREATER_THAN, HEIGHT, bold, border, dim, LESS_THAN
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
-#include <memory>                   // for shared_ptr
-#include <string>  // for allocator, operator+, to_string, char_traits, string
+#include <string>  // for allocator, char_traits, operator+, to_string, string
 
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto make_box = [](int dimx, int dimy) {
     std::string title = std::to_string(dimx) + "x" + std::to_string(dimy);
@@ -48,7 +50,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/html_like.cpp

@@ -1,7 +1,9 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>                   // for operator""s, chrono_literals
 #include <ftxui/screen/screen.hpp>  // for Screen
 #include <iostream>                 // for cout, ostream
-#include <memory>                   // for shared_ptr
 #include <string>                   // for allocator, operator<<, string
 #include <thread>                   // for sleep_for
 
@@ -10,7 +12,7 @@
 #include "ftxui/screen/box.hpp"    // for ftxui
 #include "ftxui/screen/color.hpp"  // for Color, Color::Red
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   using namespace std::chrono_literals;
 
@@ -55,7 +57,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/linear_gradient.cpp

@@ -0,0 +1,25 @@
+// Copyright 2023 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
+#include <ftxui/dom/elements.hpp>  // for bgcolor, operator|, operator|=, text, center, Element
+#include <ftxui/dom/linear_gradient.hpp>  // for LinearGradient::Stop, LinearGradient
+#include <ftxui/screen/screen.hpp>        // for Full, Screen
+#include <memory>                         // for allocator, shared_ptr
+
+#include "ftxui/dom/node.hpp"  // for Render
+#include "ftxui/screen/color.hpp"  // for Color, Color::DeepPink1, Color::DeepSkyBlue1, Color::Yellow, ftxui
+
+int main() {
+  using namespace ftxui;
+  auto document = text("gradient") | center;
+
+  document |= bgcolor(LinearGradient()
+                          .Angle(45)
+                          .Stop(Color::DeepPink1)
+                          .Stop(Color::DeepSkyBlue1));
+  auto screen = Screen::Create(Dimension::Full(), Dimension::Full());
+  Render(screen, document);
+  screen.Print();
+
+  return 0;
+}

examples/dom/package_manager.cpp

@@ -1,8 +1,11 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>                  // for operator""s, chrono_literals
 #include <ftxui/dom/elements.hpp>  // for operator|, text, Element, hbox, bold, color, filler, separator, vbox, window, gauge, Fit, size, dim, EQUAL, WIDTH
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <iostream>                 // for cout, endl, ostream
-#include <list>  // for list, operator!=, _List_iterator, _List_iterator<>::_Self
+#include <list>  // for list, operator==, _List_iterator, _List_iterator<>::_Self
 #include <memory>   // for allocator, shared_ptr, allocator_traits<>::value_type
 #include <string>   // for string, operator<<, to_string
 #include <thread>   // for sleep_for
@@ -12,7 +15,7 @@
 #include "ftxui/dom/node.hpp"  // for Render
 #include "ftxui/screen/color.hpp"  // for Color, Color::Green, Color::Red, Color::RedLight, ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   struct Task {
@@ -143,7 +146,3 @@ int main(int argc, const char* argv[]) {
   }
   std::cout << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/paragraph.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>                   // for operator""s, chrono_literals
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <iostream>                 // for cout, ostream
@@ -10,13 +13,13 @@
 #include "ftxui/screen/box.hpp"    // for ftxui
 
 using namespace std::chrono_literals;
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   std::string p =
       R"(In probability theory and statistics, Bayes' theorem (alternatively Bayes' law or Bayes' rule) describes the probability of an event, based on prior knowledge of conditions that might be related to the event. For example, if cancer is related to age, then, using Bayes' theorem, a person's age can be used to more accurately assess the probability that they have cancer, compared to the assessment of the probability of cancer made without knowledge of the person's age. One of the many applications of Bayes' theorem is Bayesian inference, a particular approach to statistical inference. When applied, the probabilities involved in Bayes' theorem may have different probability interpretations. With the Bayesian probability interpretation the theorem expresses how a subjective degree of belief should rationally change to account for availability of related evidence. Bayesian inference is fundamental to Bayesian statistics.)";
 
   std::string reset_position;
-  for (int i = 0;; ++i) {
+  while (true) {
     auto document = vbox({
                         hflow(paragraph(p)),
                         separator(),
@@ -48,7 +51,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/separator.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for text, center, separator, operator|, flex, Element, vbox, Fit, hbox, border
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <memory>                   // for allocator
@@ -5,7 +8,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto document = hbox({
                       text("left-column"),
@@ -25,7 +28,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/separator_style.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/screen/screen.hpp>  // for Screen
 #include <iostream>                 // for endl, cout, ostream
 #include <memory>                   // for allocator
@@ -6,7 +9,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/box.hpp"    // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
 
   auto document = vbox({
@@ -16,6 +19,12 @@ int main(int argc, const char* argv[]) {
           hbox(text("left"), separatorLight(), text("right")),
       }) | borderLight,
 
+      vbox({
+          text("separatorDashed"),
+          separatorDashed(),
+          hbox(text("left"), separatorDashed(), text("right")),
+      }) | borderDashed,
+
       vbox({
           text("separatorHeavy"),
           separatorHeavy(),
@@ -35,7 +44,3 @@ int main(int argc, const char* argv[]) {
   screen.Print();
   std::cout << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/size.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for operator|, text, Element, hcenter, Fit, hbox, size, window, Elements, bold, dim, EQUAL, WIDTH
 #include <ftxui/screen/screen.hpp>  // for Screen
 #include <memory>                   // for allocator, shared_ptr
@@ -7,7 +10,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto make_box = [](const std::string& title) {
     return window(text(title) | hcenter | bold,
@@ -26,7 +29,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/spinner.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <chrono>                  // for operator""s, chrono_literals
 #include <ftxui/dom/elements.hpp>  // for Element, operator|, separator, filler, hbox, size, spinner, text, vbox, bold, border, Fit, EQUAL, WIDTH
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
@@ -10,14 +13,14 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   using namespace std::chrono_literals;
 
   std::string reset_position;
   for (int index = 0; index < 200; ++index) {
     std::vector<Element> entries;
-    for (int i = 0; i < 22; ++i) {
+    for (int i = 0; i < 23; ++i) {
       if (i != 0)
         entries.push_back(separator());
       entries.push_back(  //
@@ -41,7 +44,3 @@ int main(int argc, const char* argv[]) {
   }
   std::cout << std::endl;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/style_blink.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for text, operator|, blink, Fit, hbox, Element
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <memory>                   // for allocator
@@ -5,7 +8,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto document =  //
       hbox({
@@ -19,7 +22,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.

examples/dom/style_bold.cpp

@@ -1,3 +1,6 @@
+// Copyright 2020 Arthur Sonzogni. All rights reserved.
+// Use of this source code is governed by the MIT license that can be found in
+// the LICENSE file.
 #include <ftxui/dom/elements.hpp>  // for text, operator|, bold, Fit, hbox, Element
 #include <ftxui/screen/screen.hpp>  // for Full, Screen
 #include <memory>                   // for allocator
@@ -5,7 +8,7 @@
 #include "ftxui/dom/node.hpp"      // for Render
 #include "ftxui/screen/color.hpp"  // for ftxui
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace ftxui;
   auto document =  //
       hbox({
@@ -19,7 +22,3 @@ int main(int argc, const char* argv[]) {
 
   return 0;
 }
-
-// Copyright 2020 Arthur Sonzogni. All rights reserved.
-// Use of this source code is governed by the MIT license that can be found in
-// the LICENSE file.