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114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
#ifndef FTXUI_COMPONENT_EVENT_HPP
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#define FTXUI_COMPONENT_EVENT_HPP
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#include <ftxui/component/mouse.hpp> // for Mouse
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#include <functional>
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#include <string> // for string, operator==
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#include <vector>
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namespace ftxui {
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class ScreenInteractive;
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class ComponentBase;
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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(std::string);
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static Event Character(char);
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static Event Character(wchar_t);
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static Event Special(std::string);
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static Event Mouse(std::string, Mouse mouse);
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static Event CursorReporting(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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static const Event ArrowLeftCtrl;
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static const Event ArrowRightCtrl;
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static const Event ArrowUpCtrl;
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static const Event ArrowDownCtrl;
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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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static const Event Home;
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static const Event End;
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static const Event PageUp;
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static const Event PageDown;
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// --- Custom ---
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static const Event Custom;
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//--- Method section ---------------------------------------------------------
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bool is_character() const { return type_ == Type::Character; }
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std::string character() const { return input_; }
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bool is_mouse() const { return type_ == Type::Mouse; }
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struct Mouse& mouse() { return data_.mouse; }
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bool is_cursor_reporting() const { return type_ == Type::CursorReporting; }
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int cursor_x() const { return data_.cursor.x; }
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int cursor_y() const { return data_.cursor.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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bool operator!=(const Event& other) const { return !operator==(other); }
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//--- State section ----------------------------------------------------------
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ScreenInteractive* screen_ = nullptr;
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private:
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friend ComponentBase;
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friend ScreenInteractive;
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enum class Type {
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Unknown,
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Character,
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Mouse,
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CursorReporting,
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};
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Type type_ = Type::Unknown;
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struct Cursor {
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int x = 0;
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int y = 0;
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};
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union {
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struct Mouse mouse;
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struct Cursor cursor;
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} data_ = {};
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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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