mirror of
https://github.com/ArthurSonzogni/FTXUI.git
synced 2024-10-31 08:19:34 +08:00
3b4ab618a3
In the past, FTXUI switched from std::string to std::wstring to support fullwidth characters. The reasons was that fullwidth characters can be stored inside a single wchar_t. Then FTXUI added support for combining characters. A single glygh doesn't even fit a wchar_t. Instead, a glyph can be arbitrary large. The usage of wstring doesn't really fit the new model and have several drawbacks: 1. It doesn't simplify the implementation of FTXUI, because of combining characters. 2. It reduces drawing performance by 2x. 3. It increase Screen's memory allocation by 2x. This patch converts FTXUI to use std::string internally. It now exposes std::string based API. The std::wstring API remains, but is now deprecated. Tests and examples haven't been update to show the breakage is limited. They will be updated in a second set of patches. Bug: https://github.com/ArthurSonzogni/FTXUI/issues/153 Co-authored-by: Tushar Maheshwari <tushar27192@gmail.com>
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
#include <memory> // for shared_ptr, allocator, __shared_ptr_access
|
|
|
|
#include "ftxui/component/captured_mouse.hpp" // for ftxui
|
|
#include "ftxui/component/component.hpp" // for Renderer, Button, Vertical
|
|
#include "ftxui/component/component_base.hpp" // for ComponentBase
|
|
#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
|
|
#include "ftxui/dom/deprecated.hpp" // for text
|
|
#include "ftxui/dom/elements.hpp" // for operator|, Element, bold, border, center, color
|
|
#include "ftxui/screen/color.hpp" // for Color, Color::Red
|
|
|
|
int main(int argc, const char* argv[]) {
|
|
using namespace ftxui;
|
|
auto screen = ScreenInteractive::FitComponent();
|
|
|
|
// A Renderer() is a component using a lambda function as a parameter to
|
|
// render itself.
|
|
|
|
// 1. Example of focusable renderer:
|
|
auto renderer_focusable = Renderer([](bool focused) {
|
|
if (focused)
|
|
return text(L"FOCUSABLE RENDERER()") | center | bold | border;
|
|
else
|
|
return text(L" Focusable renderer() ") | center | border;
|
|
});
|
|
|
|
// 2. Examples of a non focusable renderer.
|
|
auto renderer_non_focusable = Renderer([&] {
|
|
return text(L"~~~~~ Non Focusable renderer() ~~~~~"); //
|
|
});
|
|
|
|
// 3. Renderer can wrap other components to redefine their Render() function.
|
|
auto button = Button(L"Wrapped quit button", screen.ExitLoopClosure());
|
|
auto renderer_wrap = Renderer(button, [&] {
|
|
if (button->Focused())
|
|
return button->Render() | bold | color(Color::Red);
|
|
else
|
|
return button->Render();
|
|
});
|
|
|
|
// Let's renderer everyone:
|
|
screen.Loop(Container::Vertical({
|
|
renderer_focusable,
|
|
renderer_non_focusable,
|
|
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.
|