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https://github.com/ArthurSonzogni/FTXUI.git
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455998d759
1. Stop taking Ref<XxxOption> in Component constructors. Instead, use the XxxOption directly. Passing by copy avoid problems developers had where one was shared in between multiple component, causing issues. 2. Add variants of most component constructors taking a struct only. This replaces: https://github.com/ArthurSonzogni/FTXUI/pull/670 This fixes: https://github.com/ArthurSonzogni/FTXUI/issues/426
120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
#include <functional> // for function
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#include <utility> // for move
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#include "ftxui/component/captured_mouse.hpp" // for CapturedMouse
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#include "ftxui/component/component.hpp" // for Make, Checkbox
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#include "ftxui/component/component_base.hpp" // for Component, ComponentBase
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#include "ftxui/component/component_options.hpp" // for CheckboxOption, EntryState
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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/dom/elements.hpp" // for operator|, Element, reflect, focus, nothing, select
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#include "ftxui/screen/box.hpp" // for Box
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#include "ftxui/util/ref.hpp" // for Ref, ConstStringRef
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namespace ftxui {
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namespace {
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class CheckboxBase : public ComponentBase, public CheckboxOption {
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public:
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explicit CheckboxBase(CheckboxOption option)
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: CheckboxOption(std::move(option)) {}
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private:
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// Component implementation.
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Element Render() override {
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const bool is_focused = Focused();
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const bool is_active = Active();
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auto focus_management = is_focused ? focus : is_active ? select : nothing;
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auto entry_state = EntryState{
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*label,
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*checked,
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is_active,
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is_focused || hovered_,
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};
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auto element = (transform ? transform : CheckboxOption::Simple().transform)(
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entry_state);
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return element | focus_management | reflect(box_);
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}
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bool OnEvent(Event event) override {
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if (!CaptureMouse(event)) {
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return false;
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}
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if (event.is_mouse()) {
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return OnMouseEvent(event);
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}
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hovered_ = false;
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if (event == Event::Character(' ') || event == Event::Return) {
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*checked = !*checked;
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on_change();
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TakeFocus();
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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 OnMouseEvent(Event event) {
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hovered_ = box_.Contain(event.mouse().x, event.mouse().y);
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if (!CaptureMouse(event)) {
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return false;
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}
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if (!hovered_) {
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return false;
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}
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if (event.mouse().button == Mouse::Left &&
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event.mouse().motion == Mouse::Pressed) {
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*checked = !*checked;
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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 Focusable() const final { return true; }
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bool hovered_ = false;
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Box box_;
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};
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} // namespace
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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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/// @param option Additional optional parameters.
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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::string label = "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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// NOLINTNEXTLINE
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Component Checkbox(ConstStringRef label, bool* checked, CheckboxOption option) {
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option.label = label;
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option.checked = checked;
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return Make<CheckboxBase>(std::move(option));
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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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