Refactor directory structure.

The goal is to increase the separation in between:

 * ftxui::screen
 * ftxui::dom
 * ftxui::component

ftxui/include/ftxui/box.hpp

@@ -1,11 +0,0 @@
-#ifndef FTX_UI_CORE_BOX
-#define FTX_UI_CORE_BOX
-
-struct Box {
-  int left;
-  int right;
-  int top;
-  int bottom;
-};
-
-#endif /* end of include guard: FTX_UI_CORE_BOX */

ftxui/include/ftxui/component/component.hpp

@@ -2,11 +2,10 @@
 #define FTXUI_COMPONENT_COMPONENT_HPP
 
 #include "ftxui/component/delegate.hpp"
+#include "ftxui/component/event.hpp"
 #include "ftxui/dom/elements.hpp"
-#include "ftxui/event.hpp"
 
-namespace ftxui {
-namespace component {
+namespace ftxui::component {
 
 class Delegate;
 class Focus;
@@ -39,7 +38,6 @@ class Component {
   Delegate* delegate_;
 };
 
-}  // namespace component
-}  // namespace ftxui
+}  // namespace ftxui::component
 
 #endif /* end of include guard: FTXUI_COMPONENT_COMPONENT_HPP */

ftxui/include/ftxui/component/component_horizontal.hpp

@@ -3,8 +3,7 @@
 
 #include "ftxui/component/component_direction.hpp"
 
-namespace ftxui {
-namespace component {
+namespace ftxui::component {
 
 // A component where focus and events are automatically handled for you.
 // It assumes its children are put in the horizontal direction.
@@ -14,7 +13,6 @@ class ComponentHorizontal : public ComponentDirection {
   bool HandleDirection(Event) override;
 };
 
-} // namespace component
-} // namespace ftxui
+} // namespace ftxui::component
 
 #endif /* end of include guard: FTXUI_COMPONENT_COMPONENT_HORIZONTAL_H_ */

ftxui/include/ftxui/component/component_vertical.hpp

@@ -3,8 +3,7 @@
 
 #include "ftxui/component/component_direction.hpp"
 
-namespace ftxui {
-namespace component {
+namespace ftxui::component {
 
 // A component where focus and events are automatically handled for you.
 // It assumes its children are put in the vertical direction.
@@ -14,7 +13,6 @@ class ComponentVertical : public ComponentDirection {
   bool HandleDirection(Event) override;
 };
 
-} // namespace component
-} // namespace ftxui
+} // namespace ftxui::component
 
 #endif /* end of include guard: FTXUI_COMPONENT_COMPONENT_VERTICAL_H_ */

ftxui/include/ftxui/component/delegate.hpp

@@ -3,8 +3,7 @@
 
 #include "ftxui/dom/elements.hpp"
 
-namespace ftxui {
-namespace component {
+namespace ftxui::component {
 
 class Component;
 
@@ -28,7 +27,6 @@ class Delegate {
   virtual Delegate* Root() = 0;
 };
 
-}  // namespace component
-}  // namespace ftxui
+}  // namespace ftxui::component
 
 #endif /* end of include guard: FTXUI_COMPONENT_DELEGATE_HPP */

ftxui/include/ftxui/component/event.hpp

@@ -1,10 +1,10 @@
-#ifndef FTXUI_EVENT_H_
-#define FTXUI_EVENT_H_
+#ifndef FTXUI_COMPONENT_EVENT_HPP
+#define FTXUI_COMPONENT_EVENT_HPP
 
 #include <vector>
 #include <array>
 
-namespace ftxui {
+namespace ftxui::component {
 
 struct Event{
  public:
@@ -31,7 +31,7 @@ struct Event{
 };
 
 
-} // namespace ftxui
+} // namespace ftxui::component
 
 
-#endif /* end of include guard: FTXUI_EVENT_H_ */
+#endif /* end of include guard: FTXUI_COMPONENT_EVENT_HPP */

ftxui/include/ftxui/component/input.hpp

@@ -4,8 +4,7 @@
 #include "ftxui/component/component.hpp"
 #include <functional>
 
-namespace ftxui {
-namespace component {
+namespace ftxui::component {
 
 class Input : public Component {
  public:
@@ -29,7 +28,6 @@ class Input : public Component {
   int cursor_position = 0;
 };
 
-}  // namespace component
-}  // namespace ftxui
+}  // namespace ftxui::component
 
 #endif /* end of include guard: FTXUI_COMPONENT_INPUT_H_ */

ftxui/include/ftxui/component/menu.hpp

@@ -5,8 +5,7 @@
 #include "ftxui/dom/elements.hpp"
 #include <functional>
 
-namespace ftxui {
-namespace component {
+namespace ftxui::component {
 
 class Menu : public Component {
  public:
@@ -30,7 +29,6 @@ class Menu : public Component {
   bool OnEvent(Event) override;
 };
 
-}  // namespace component
-}  // namespace ftxui
+}  // namespace ftxui::Component
 
 #endif /* end of include guard: FTXUI_COMPONENT_MENU */

ftxui/include/ftxui/component/screen_interactive.hpp

@@ -1,18 +1,16 @@
-#ifndef FTXUI_SCREEN_INTERACTIVE
-#define FTXUI_SCREEN_INTERACTIVE
+#ifndef FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
+#define FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP
 
-#include "ftxui/screen.hpp"
+#include "ftxui/screen/screen.hpp"
 #include <functional>
 #include <memory>
 
-namespace ftxui {
+namespace ftxui::component {
 
-namespace component {
-  class Delegate;
-  class Component;
-} // namespace component
+class Delegate;
+class Component;
 
-class ScreenInteractive : public Screen {
+class ScreenInteractive : public ftxui::screen::Screen {
   public:
     static ScreenInteractive FixedSize(size_t dimx, size_t dimy);
     static ScreenInteractive Fullscreen();
@@ -21,15 +19,15 @@ class ScreenInteractive : public Screen {
     ~ScreenInteractive();
     component::Delegate* delegate();
     void Loop();
-		std::function<void()> ExitLoopClosure();
+    std::function<void()> ExitLoopClosure();
 
   private:
    class Delegate;
    std::unique_ptr<Delegate> delegate_;
 
-	 void Clear();
-	 void Draw();
-	 bool quit_ = false;
+   void Clear();
+   void Draw();
+   bool quit_ = false;
 
    enum class Dimension {
      Fixed,
@@ -41,6 +39,6 @@ class ScreenInteractive : public Screen {
    ScreenInteractive(size_t dimx, size_t dimy, Dimension dimension);
 };
 
-}  // namespace ftxui
+}  // namespace ftxui::component
 
-#endif /* end of include guard: FTXUI_SCREEN_INTERACTIVE */
+#endif /* end of include guard: FTXUI_COMPONENT_SCREEN_INTERACTIVE_HPP */

ftxui/include/ftxui/component/toggle.hpp

@@ -5,8 +5,7 @@
 #include <functional>
 #include <string>
 
-namespace ftxui {
-namespace component {
+namespace ftxui::component {
 
 class Toggle : public Component {
  public:
@@ -25,7 +24,6 @@ class Toggle : public Component {
   bool OnEvent(Event) override;
 };
 
-}  // namespace component
-}  // namespace ftxui
+}  // namespace ftxui::Component
 
 #endif /* end of include guard: FTXUI_COMPONENT_TOGGLE_H_ */

ftxui/include/ftxui/dom/box.hpp

@@ -0,0 +1,15 @@
+#ifndef FTXUI_DOM_BOX_HPP
+#define FTXUI_DOM_BOX_HPP
+
+namespace ftxui::dom {
+
+struct Box {
+  int left;
+  int right;
+  int top;
+  int bottom;
+};
+
+}; // namespace ftxui::dom
+
+#endif /* end of include guard: FTXUI_DOM_BOX_HPP */

ftxui/include/ftxui/dom/elements.hpp

@@ -3,16 +3,16 @@
 
 #include <functional>
 
-#include "ftxui/color.hpp"
 #include "ftxui/dom/node.hpp"
+#include "ftxui/screen/color.hpp"
 
-namespace ftxui {
-namespace dom {
+namespace ftxui::dom {
 
 using Element = std::unique_ptr<Node>;
 using Decorator = std::function<Element(Element)>;
 using Child = std::unique_ptr<Node>;
 using Children = std::vector<Child>;
+using Color = ftxui::screen::Color;
 
 // --- Layout ----
 Element vbox(Children);
@@ -58,7 +58,6 @@ TAKE_ANY_ARGS(vbox)
 TAKE_ANY_ARGS(hbox)
 TAKE_ANY_ARGS(dbox)
 
-};  // namespace dom
-};  // namespace ftxui
+};  // namespace ftxui::dom
 
 #endif /* end of include guard: FTXUI_DOM_ELEMENTS_HPP */

ftxui/include/ftxui/dom/node.hpp

@@ -1,15 +1,14 @@
-#ifndef DOM_NODE_HPP
-#define DOM_NODE_HPP
+#ifndef FTXUI_DOM_NODE_HPP
+#define FTXUI_DOM_NODE_HPP
 
 #include <memory>
 #include <vector>
 
-#include "ftxui/requirement.hpp"
-#include "ftxui/screen.hpp"
-#include "ftxui/box.hpp"
+#include "ftxui/dom/box.hpp"
+#include "ftxui/dom/requirement.hpp"
+#include "ftxui/screen/screen.hpp"
 
-namespace ftxui {
-namespace dom {
+namespace ftxui::dom {
 
 class Node {
  public:
@@ -28,7 +27,7 @@ class Node {
   virtual void SetBox(Box box);
 
   // Step 3: Draw this element.
-  virtual void Render(Screen& screen);
+  virtual void Render(screen::Screen& screen);
 
   std::vector<std::unique_ptr<Node>> children;
  protected:
@@ -36,9 +35,8 @@ class Node {
   Box box_;
 };
 
-void Render(Screen& screen, Node* node);
+void Render(screen::Screen& screen, Node* node);
 
-};  // namespace dom
-};  // namespace ftxui
+};  // namespace ftxui::dom
 
-#endif /* end of include guard: DOM_NODE_HPP */
+#endif /* end of include guard: FTXUI_DOM_NODE_HPP */

ftxui/include/ftxui/dom/requirement.hpp

@@ -1,7 +1,7 @@
-#ifndef FTXUI_REQUIREMENT_HPP
-#define FTXUI_REQUIREMENT_HPP
+#ifndef FTXUI_DOM_REQUIREMENT_HPP
+#define FTXUI_DOM_REQUIREMENT_HPP
 
-namespace ftxui {
+namespace ftxui::dom {
 
 struct Requirement {
   // The required size to fully draw the element.
@@ -11,6 +11,6 @@ struct Requirement {
   struct { int x = 0; int y = 0; } flex;
 };
 
-};  // namespace ftxui
+}; // namespace ftxui::dom
 
 #endif /* end of include guard: FTXUI_REQUIREMENT_HPP */

ftxui/include/ftxui/screen/color.hpp

@@ -1,9 +1,9 @@
-#ifndef FTXUI_COLOR_H_
-#define FTXUI_COLOR_H_
+#ifndef FTXUI_SCREEN_COLOR
+#define FTXUI_SCREEN_COLOR
 
 #include <cstdint>
 
-namespace ftxui {
+namespace ftxui::screen {
 
 enum class Color : uint8_t {
   // --- Transparent -----
@@ -35,6 +35,6 @@ enum class Color : uint8_t {
   YellowLight = 93,
 };
 
-};  // namespace ftxui
+}; // namespace ftxui::screen
 
 #endif /* end of include guard: FTXUI_COLOR_H_ */

ftxui/include/ftxui/screen/screen.hpp

@@ -1,17 +1,18 @@
-#ifndef FTXUI_SCREEN
-#define FTXUI_SCREEN
+#ifndef FTXUI_SCREEN_SCREEN
+#define FTXUI_SCREEN_SCREEN
 
 #include <string>
 #include <vector>
 #include <memory>
 
-#include <ftxui/color.hpp>
+#include "ftxui/screen/color.hpp"
 
-namespace ftxui {
-namespace dom {
+namespace ftxui::dom {
   class Node;
 }
 
+namespace ftxui::screen {
+
 struct Pixel {
   wchar_t character = U' ';
   bool blink = false;
@@ -55,6 +56,6 @@ class Screen {
   std::vector<std::vector<Pixel>> pixels_;
 };
 
-};  // namespace ftxui
+};  // namespace ftxui::screen
 
-#endif /* end of include guard: FTXUI_SCREEN */
+#endif /* end of include guard: FTXUI_SCREEN_SCREEN */