FTXUI/include/ftxui/component/component_options.hpp

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#ifndef FTXUI_COMPONENT_COMPONENT_OPTIONS_HPP
#define FTXUI_COMPONENT_COMPONENT_OPTIONS_HPP
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#include <chrono> // for milliseconds
#include <ftxui/component/animation.hpp> // for Duration, QuadraticInOut, Function
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#include <ftxui/dom/elements.hpp> // for Element
#include <ftxui/util/ref.hpp> // for Ref
#include <functional> // for function
#include <optional> // for optional
#include <string> // for string
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#include "ftxui/screen/color.hpp" // for Color, Color::GrayDark, Color::White
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namespace ftxui {
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/// @brief arguments for |ButtonOption::transform|, |CheckboxOption::transform|,
/// |Radiobox::transform|, |MenuEntryOption::transform|,
/// |MenuOption::transform|.
struct EntryState {
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std::string label; /// < The label to display.
bool state; /// < The state of the button/checkbox/radiobox
bool active; /// < Whether the entry is the active one.
bool focused; /// < Whether the entry is one focused by the user.
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};
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struct UnderlineOption {
bool enabled = false;
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Color color_active = Color::White;
Color color_inactive = Color::GrayDark;
animation::easing::Function leader_function =
animation::easing::QuadraticInOut;
animation::easing::Function follower_function =
animation::easing::QuadraticInOut;
animation::Duration leader_duration = std::chrono::milliseconds(250);
animation::Duration leader_delay = std::chrono::milliseconds(0);
animation::Duration follower_duration = std::chrono::milliseconds(250);
animation::Duration follower_delay = std::chrono::milliseconds(0);
void SetAnimation(animation::Duration d, animation::easing::Function f);
void SetAnimationDuration(animation::Duration d);
void SetAnimationFunction(animation::easing::Function f);
void SetAnimationFunction(animation::easing::Function f_leader,
animation::easing::Function f_follower);
};
/// @brief Option about a potentially animated color.
/// @ingroup component
struct AnimatedColorOption {
void Set(
Color inactive,
Color active,
animation::Duration duration = std::chrono::milliseconds(250),
animation::easing::Function function = animation::easing::QuadraticInOut);
bool enabled = false;
Color inactive;
Color active;
animation::Duration duration = std::chrono::milliseconds(250);
animation::easing::Function function = animation::easing::QuadraticInOut;
};
struct AnimatedColorsOption {
AnimatedColorOption background;
AnimatedColorOption foreground;
};
/// @brief Option for the MenuEntry component.
/// @ingroup component
struct MenuEntryOption {
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std::function<Element(const EntryState& state)> transform;
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AnimatedColorsOption animated_colors;
};
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/// @brief Option for the Menu component.
/// @ingroup component
struct MenuOption {
// Standard constructors:
static MenuOption Horizontal();
static MenuOption HorizontalAnimated();
static MenuOption Vertical();
static MenuOption VerticalAnimated();
static MenuOption Toggle();
// Style:
UnderlineOption underline;
MenuEntryOption entries;
enum Direction { Up, Down, Left, Right };
Direction direction = Down;
std::function<Element()> elements_prefix;
std::function<Element()> elements_infix;
std::function<Element()> elements_postfix;
// Observers:
std::function<void()> on_change; ///> Called when the seelcted entry changes.
std::function<void()> on_enter; ///> Called when the user presses enter.
Ref<int> focused_entry = 0;
};
/// @brief Option for the AnimatedButton component.
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/// @ingroup component
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struct ButtonOption {
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// Standard constructors:
static ButtonOption Ascii();
static ButtonOption Simple();
static ButtonOption Border();
static ButtonOption Animated();
static ButtonOption Animated(Color color);
static ButtonOption Animated(Color background, Color foreground);
static ButtonOption Animated(Color background,
Color foreground,
Color background_active,
Color foreground_active);
// Style:
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std::function<Element(const EntryState&)> transform;
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AnimatedColorsOption animated_colors;
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};
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/// @brief Option for the Checkbox component.
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/// @ingroup component
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struct CheckboxOption {
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// Standard constructors:
static CheckboxOption Simple();
// Style:
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std::function<Element(const EntryState&)> transform;
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// Observer:
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/// Called when the user change the state.
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std::function<void()> on_change = [] {};
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};
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/// @brief Option for the Input component.
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/// @ingroup component
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struct InputOption {
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/// Called when the content changes.
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std::function<void()> on_change = [] {};
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/// Called when the user presses enter.
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std::function<void()> on_enter = [] {};
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/// Obscure the input content using '*'.
Ref<bool> password = false;
/// When set different from -1, this attributes is used to store the cursor
/// position.
Ref<int> cursor_position = -1;
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};
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/// @brief Option for the Radiobox component.
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/// @ingroup component
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struct RadioboxOption {
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// Standard constructors:
static RadioboxOption Simple();
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// Style:
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std::function<Element(const EntryState&)> transform;
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// Observers:
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/// Called when the selected entry changes.
std::function<void()> on_change = [] {};
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Ref<int> focused_entry = 0;
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};
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} // namespace ftxui
#endif /* end of include guard: FTXUI_COMPONENT_COMPONENT_OPTIONS_HPP */
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// 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.