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Bugfix Input use std::string (#279)

Browse Source 
Use std::string by default for the implementation of FTXUI's input
component.

Along the way:
- Give a correct implementation for fullwidth characters.
- Add tests
- Modify the way the cursor is drawn.
This commit is contained in:
Arthur Sonzogni
2021-12-12 21:31:54 +01:00
committed by GitHub
parent 602392c43d
commit 52276c8a2b
6 changed files with 425 additions and 62 deletions
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145
src/ftxui/component/input_test.cpp
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@@ -226,6 +226,151 @@ TEST(InputTest, Backspace) {
EXPECT_EQ(option.cursor_position(), 0u);
}
TEST(InputTest, MouseClick) {
std::string content;
std::string placeholder;
auto option = InputOption();
option.cursor_position = 0;
auto input = Input(&content, &placeholder, &option);
input->OnEvent(Event::Character("a"));
input->OnEvent(Event::Character("b"));
input->OnEvent(Event::Character("c"));
input->OnEvent(Event::Character("d"));
EXPECT_EQ(option.cursor_position(), 4u);
auto render = [&] {
auto document = input->Render();
auto screen = Screen::Create(Dimension::Fixed(10), Dimension::Fixed(1));
Render(screen, document);
};
render();
Mouse mouse;
mouse.button = Mouse::Button::Left;
mouse.motion = Mouse::Motion::Pressed;
mouse.y = 0;
mouse.shift = false;
mouse.meta = false;
mouse.control = false;
mouse.x = 0;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 0u);
mouse.x = 2;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 2u);
mouse.x = 2;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 2u);
mouse.x = 1;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 1u);
mouse.x = 3;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 3u);
mouse.x = 4;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 4u);
mouse.x = 5;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 4u);
}
TEST(InputTest, MouseClickComplex) {
std::string content;
std::string placeholder;
auto option = InputOption();
option.cursor_position = 0;
auto input = Input(&content, &placeholder, &option);
input->OnEvent(Event::Character("测"));
input->OnEvent(Event::Character("试"));
input->OnEvent(Event::Character("a⃒"));
input->OnEvent(Event::Character("ā"));
EXPECT_EQ(option.cursor_position(), 4u);
auto render = [&] {
auto document = input->Render();
auto screen = Screen::Create(Dimension::Fixed(10), Dimension::Fixed(1));
Render(screen, document);
};
render();
Mouse mouse;
mouse.button = Mouse::Button::Left;
mouse.motion = Mouse::Motion::Pressed;
mouse.y = 0;
mouse.shift = false;
mouse.meta = false;
mouse.control = false;
mouse.x = 0;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 0u);
mouse.x = 0;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 0u);
mouse.x = 1;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 0u);
mouse.x = 1;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 0u);
mouse.x = 2;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 1u);
mouse.x = 2;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 1u);
mouse.x = 1;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 0u);
mouse.x = 4;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 2u);
mouse.x = 5;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 3u);
mouse.x = 6;
input->OnEvent(Event::Mouse("", mouse));
render();
EXPECT_EQ(option.cursor_position(), 4u);
}
// 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.