text: /*************************************************************************/
  /*  os_uwp.h                                                             */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #ifndef OS_UWP_H
  #define OS_UWP_H
  
  #include "context_egl_uwp.h"
  #include "core/math/transform_2d.h"
  #include "core/os/input.h"
  #include "core/os/os.h"
  #include "core/ustring.h"
  #include "drivers/xaudio2/audio_driver_xaudio2.h"
  #include "joypad_uwp.h"
  #include "main/input_default.h"
  #include "power_uwp.h"
  #include "servers/audio_server.h"
  #include "servers/camera_server.h"
  #include "servers/visual/rasterizer.h"
  #include "servers/visual_server.h"
  
  #include <fcntl.h>
  #include <io.h>
  #include <stdio.h>
  #include <windows.h>
  
  /**
  	@author Juan Linietsky <reduzio@gmail.com>
  */
  class OS_UWP : public OS {
  
  public:
  	struct KeyEvent {
  
  		enum MessageType {
  			KEY_EVENT_MESSAGE,
  			CHAR_EVENT_MESSAGE
  		};
  
  		bool alt, shift, control;
  		MessageType type;
  		bool pressed;
  		unsigned int scancode;
  		unsigned int unicode;
  		bool echo;
  		CorePhysicalKeyStatus status;
  	};
  
  private:
  	enum {
  		JOYPADS_MAX = 8,
  		JOY_AXIS_COUNT = 6,
  		MAX_JOY_AXIS = 32768, // I've no idea
  		KEY_EVENT_BUFFER_SIZE = 512
  	};
  
  	FILE *stdo;
  
  	KeyEvent key_event_buffer[KEY_EVENT_BUFFER_SIZE];
  	int key_event_pos;
  
  	uint64_t ticks_start;
  	uint64_t ticks_per_second;
  
  	bool minimized;
  	bool old_invalid;
  	bool outside;
  	int old_x, old_y;
  	Point2i center;
  	VisualServer *visual_server;
  	int pressrc;
  
  	CameraServer *camera_server;
  
  	ContextEGL_UWP *gl_context;
  	Windows::UI::Core::CoreWindow ^ window;
  
  	VideoMode video_mode;
  	int video_driver_index;
  
  	MainLoop *main_loop;
  
  	AudioDriverXAudio2 audio_driver;
  
  	PowerUWP *power_manager;
  
  	MouseMode mouse_mode;
  	bool alt_mem;
  	bool gr_mem;
  	bool shift_mem;
  	bool control_mem;
  	bool meta_mem;
  	bool force_quit;
  	uint32_t last_button_state;
  
  	CursorShape cursor_shape;
  
  	InputDefault *input;
  
  	JoypadUWP ^ joypad;
  
  	Windows::System::Display::DisplayRequest ^ display_request;
  
  	void _post_dpad(DWORD p_dpad, int p_device, bool p_pressed);
  
  	void _drag_event(int idx, UINT uMsg, WPARAM wParam, LPARAM lParam);
  	void _touch_event(int idx, UINT uMsg, WPARAM wParam, LPARAM lParam);
  
  	ref class ManagedType {
  	public:
  		property bool alert_close_handle;
  		property Platform::String ^ clipboard;
  		void alert_close(Windows::UI::Popups::IUICommand ^ command);
  		void on_clipboard_changed(Platform::Object ^ sender, Platform::Object ^ ev);
  		void update_clipboard();
  		void on_accelerometer_reading_changed(Windows::Devices::Sensors::Accelerometer ^ sender, Windows::Devices::Sensors::AccelerometerReadingChangedEventArgs ^ args);
  		void on_magnetometer_reading_changed(Windows::Devices::Sensors::Magnetometer ^ sender, Windows::Devices::Sensors::MagnetometerReadingChangedEventArgs ^ args);
  		void on_gyroscope_reading_changed(Windows::Devices::Sensors::Gyrometer ^ sender, Windows::Devices::Sensors::GyrometerReadingChangedEventArgs ^ args);
  
  		/** clang-format breaks this, it does not understand this token. */
  		/* clang-format off */
  	internal:
  		ManagedType() { alert_close_handle = false; }
  		property OS_UWP* os;
  		/* clang-format on */
  	};
  	ManagedType ^ managed_object;
  	Windows::Devices::Sensors::Accelerometer ^ accelerometer;
  	Windows::Devices::Sensors::Magnetometer ^ magnetometer;
  	Windows::Devices::Sensors::Gyrometer ^ gyrometer;
  
  	// functions used by main to initialize/deinitialize the OS
  protected:
  	virtual int get_video_driver_count() const;
  	virtual int get_current_video_driver() const;
  
  	virtual void initialize_core();
  	virtual Error initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver);
  
  	virtual void set_main_loop(MainLoop *p_main_loop);
  	virtual void delete_main_loop();
  
  	virtual void finalize();
  	virtual void finalize_core();
  
  	void process_events();
  
  	void process_key_events();
  
  public:
  	// Event to send to the app wrapper
  	HANDLE mouse_mode_changed;
  
  	virtual void alert(const String &p_alert, const String &p_title = "ALERT!");
  	String get_stdin_string(bool p_block);
  
  	void set_mouse_mode(MouseMode p_mode);
  	MouseMode get_mouse_mode() const;
  
  	virtual Point2 get_mouse_position() const;
  	virtual int get_mouse_button_state() const;
  	virtual void set_window_title(const String &p_title);
  
  	virtual void set_video_mode(const VideoMode &p_video_mode, int p_screen = 0);
  	virtual VideoMode get_video_mode(int p_screen = 0) const;
  	virtual void get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen = 0) const;
  	virtual Size2 get_window_size() const;
  	virtual void set_window_size(const Size2 p_size);
  	virtual void set_window_fullscreen(bool p_enabled);
  	virtual bool is_window_fullscreen() const;
  	virtual void set_keep_screen_on(bool p_enabled);
  
  	virtual MainLoop *get_main_loop() const;
  
  	virtual String get_name() const;
  
  	virtual Date get_date(bool utc) const;
  	virtual Time get_time(bool utc) const;
  	virtual TimeZoneInfo get_time_zone_info() const;
  	virtual uint64_t get_unix_time() const;
  
  	virtual bool can_draw() const;
  	virtual Error set_cwd(const String &p_cwd);
  
  	virtual void delay_usec(uint32_t p_usec) const;
  	virtual uint64_t get_ticks_usec() const;
  
  	virtual Error execute(const String &p_path, const List<String> &p_arguments, bool p_blocking, ProcessID *r_child_id = NULL, String *r_pipe = NULL, int *r_exitcode = NULL, bool read_stderr = false, Mutex *p_pipe_mutex = NULL);
  	virtual Error kill(const ProcessID &p_pid);
  
  	virtual bool has_environment(const String &p_var) const;
  	virtual String get_environment(const String &p_var) const;
  	virtual bool set_environment(const String &p_var, const String &p_value) const;
  
  	virtual void set_clipboard(const String &p_text);
  	virtual String get_clipboard() const;
  
  	void set_cursor_shape(CursorShape p_shape);
  	CursorShape get_cursor_shape() const;
  	virtual void set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot);
  	void set_icon(const Ref<Image> &p_icon);
  
  	virtual String get_executable_path() const;
  
  	virtual String get_locale() const;
  
  	virtual void move_window_to_foreground();
  	virtual String get_user_data_dir() const;
  
  	virtual bool _check_internal_feature_support(const String &p_feature);
  
  	void set_window(Windows::UI::Core::CoreWindow ^ p_window);
  	void screen_size_changed();
  
  	virtual void release_rendering_thread();
  	virtual void make_rendering_thread();
  	virtual void swap_buffers();
  
  	virtual bool has_touchscreen_ui_hint() const;
  
  	virtual bool has_virtual_keyboard() const;
  	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2());
  	virtual void hide_virtual_keyboard();
  
  	virtual Error open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path = false);
  	virtual Error close_dynamic_library(void *p_library_handle);
  	virtual Error get_dynamic_library_symbol_handle(void *p_library_handle, const String p_name, void *&p_symbol_handle, bool p_optional = false);
  
  	virtual Error shell_open(String p_uri);
  
  	void run();
  
  	virtual bool get_swap_ok_cancel() { return true; }
  
  	void input_event(const Ref<InputEvent> &p_event);
  
  	virtual OS::PowerState get_power_state();
  	virtual int get_power_seconds_left();
  	virtual int get_power_percent_left();
  
  	void queue_key_event(KeyEvent &p_event);
  
  	OS_UWP();
  	~OS_UWP();
  };
  
  #endif
  