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108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
#ifndef FTXUI_COMPONENT_EVENT_HPP
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#define FTXUI_COMPONENT_EVENT_HPP
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#include <array>
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#include <ftxui/component/receiver.hpp>
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#include <functional>
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#include <string>
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#include <vector>
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namespace ftxui {
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/// @brief Represent an event. It can be key press event, a terminal resize, or
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/// more ...
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///
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/// For example:
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/// - Printable character can be created using Event::Character('a').
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/// - Some special are predefined, like Event::ArrowLeft.
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/// - One can find arbitrary code for special Events using:
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/// ./example/util/print_key_press
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/// For instance, CTLR+A maps to Event::Special({1});
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///
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/// Useful documentation about xterm specification:
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/// https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
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struct Event {
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// --- Constructor section ---------------------------------------------------
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static Event Character(char);
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static Event Character(wchar_t);
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static Event Character(std::string);
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static Event Special(std::string);
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static Event MouseMove(std::string, int x, int y);
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static Event MouseUp(std::string, int x, int y);
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static Event MouseLeftMove(std::string, int x, int y);
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static Event MouseLeftDown(std::string, int x, int y);
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static Event MouseRightMove(std::string, int x, int y);
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static Event MouseRightDown(std::string, int x, int y);
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// --- Arrow ---
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static const Event ArrowLeft;
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static const Event ArrowRight;
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static const Event ArrowUp;
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static const Event ArrowDown;
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// --- Other ---
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static const Event Backspace;
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static const Event Delete;
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static const Event Return;
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static const Event Escape;
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static const Event Tab;
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static const Event TabReverse;
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static const Event F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12;
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// --- Custom ---
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static Event Custom;
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//--- Method section ---------------------------------------------------------
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bool is_character() const { return type_ == Type::Character;}
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wchar_t character() const { return character_; }
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bool is_mouse_left_down() const { return type_ == Type::MouseLeftDown; }
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bool is_mouse_left_move() const { return type_ == Type::MouseLeftMove; }
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bool is_mouse_right_down() const { return type_ == Type::MouseRightDown; }
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bool is_mouse_right_move() const { return type_ == Type::MouseRightMove; }
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bool is_mouse_up() const { return type_ == Type::MouseUp; }
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bool is_mouse_move() const { return type_ == Type::MouseMove; }
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int mouse_x() const { return mouse_.x; }
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int mouse_y() const { return mouse_.y; }
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const std::string& input() const { return input_; }
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bool operator==(const Event& other) const { return input_ == other.input_; }
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//--- State section ----------------------------------------------------------
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private:
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enum class Type {
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Unknown,
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Character,
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MouseMove,
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MouseUp,
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MouseLeftDown,
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MouseLeftMove,
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MouseRightDown,
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MouseRightMove,
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};
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struct Mouse {
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int x;
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int y;
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};
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Type type_ = Type::Unknown;
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union {
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wchar_t character_ = U'?';
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Mouse mouse_;
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};
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std::string input_;
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};
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} // namespace ftxui
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#endif /* end of include guard: FTXUI_COMPONENT_EVENT_HPP */
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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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