mirror of
https://github.com/ArthurSonzogni/FTXUI.git
synced 2025-05-06 07:07:51 +08:00
89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
#include <functional> // for function
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#include <memory> // for shared_ptr
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#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
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#include "ftxui/component/checkbox.hpp"
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#include "ftxui/component/event.hpp" // for Event, Event::Return
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#include "ftxui/component/mouse.hpp" // for Mouse, Mouse::Left, Mouse::Pressed
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#include "ftxui/component/screen_interactive.hpp" // for ScreenInteractive
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namespace ftxui {
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/// @brief Draw checkable element.
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/// @param label The label of the checkbox.
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/// @param checked Whether the checkbox is checked or not.
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/// @ingroup component
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/// @see CheckboxBase
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///
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/// ### Example
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///
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/// ```cpp
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/// auto screen = ScreenInteractive::FitComponent();
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/// std::wstring label = L"Make a sandwidth";
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/// bool checked = false;
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/// Component checkbox = Checkbox(&label, &checked);
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/// screen.Loop(checkbox)
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/// ```
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///
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/// ### Output
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///
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/// ```bash
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/// ☐ Make a sandwitch
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/// ```
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Component Checkbox(const std::wstring* label, bool* checked) {
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return Make<CheckboxBase>(label, checked);
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}
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// static
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CheckboxBase* From(Component component) {
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return static_cast<CheckboxBase*>(component.get());
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}
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CheckboxBase::CheckboxBase(const std::wstring* label, bool* state)
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: label_(label), state_(state) {}
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Element CheckboxBase::Render() {
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bool is_focused = Focused();
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auto style = is_focused ? focused_style : unfocused_style;
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auto focus_management = is_focused ? focus : *state_ ? select : nothing;
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return hbox(text(*state_ ? checked : unchecked),
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text(*label_) | style | focus_management) |
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reflect(box_);
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}
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bool CheckboxBase::OnEvent(Event event) {
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if (event.is_mouse())
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return OnMouseEvent(event);
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if (event == Event::Character(' ') || event == Event::Return) {
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*state_ = !*state_;
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on_change();
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return true;
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}
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return false;
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}
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bool CheckboxBase::OnMouseEvent(Event event) {
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if (!CaptureMouse(event))
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return false;
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if (!box_.Contain(event.mouse().x, event.mouse().y))
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return false;
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TakeFocus();
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if (event.mouse().button == Mouse::Left &&
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event.mouse().motion == Mouse::Pressed) {
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*state_ = !*state_;
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on_change();
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return true;
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}
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return false;
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}
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} // namespace ftxui
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// Copyright 2020 Arthur Sonzogni. All rights reserved.
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// Use of this source code is governed by the MIT license that can be found in
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// the LICENSE file.
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