+/*************************************************************************/

+/* display_server_web.h */

+/*************************************************************************/

+/* This file is part of: */

+/* GODOT ENGINE */

+/* https://godotengine.org */

+/*************************************************************************/

+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */

+/* Copyright (c) 2014-2022 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 DISPLAY_SERVER_WEB_H

+#define DISPLAY_SERVER_WEB_H

+

+#include "servers/display_server.h"

+

+#include <emscripten.h>

+#include <emscripten/html5.h>

+

+class DisplayServerWeb : public DisplayServer {

+private:

+ struct JSTouchEvent {

+ uint32_t identifier[32] = { 0 };

+ double coords[64] = { 0 };

+ };

+ JSTouchEvent touch_event;

+

+ struct JSKeyEvent {

+ char code[32] = { 0 };

+ char key[32] = { 0 };

+ uint8_t modifiers[4] = { 0 };

+ };

+ JSKeyEvent key_event;

+

+#ifdef GLES3_ENABLED

+ EMSCRIPTEN_WEBGL_CONTEXT_HANDLE webgl_ctx = 0;

+#endif

+

+ HashMap<int, CharString> utterance_ids;

+

+ WindowMode window_mode = WINDOW_MODE_WINDOWED;

+ ObjectID window_attached_instance_id = {};

+

+ Callable rect_changed_callback;

+ Callable window_event_callback;

+ Callable input_event_callback;

+ Callable input_text_callback;

+ Callable drop_files_callback;

+

+ String clipboard;

+ Point2 touches[32];

+

+ Array voices;

+

+ char canvas_id[256] = { 0 };

+ bool cursor_inside_canvas = true;

+ CursorShape cursor_shape = CURSOR_ARROW;

+ Point2i last_click_pos = Point2(-100, -100); // TODO check this again.

+ uint64_t last_click_ms = 0;

+ MouseButton last_click_button_index = MouseButton::NONE;

+

+ bool swap_cancel_ok = false;

+

+ // utilities

+ static void dom2godot_mod(Ref<InputEventWithModifiers> ev, int p_mod);

+ static const char *godot2dom_cursor(DisplayServer::CursorShape p_shape);

+

+ // events

+ static void fullscreen_change_callback(int p_fullscreen);

+ static int mouse_button_callback(int p_pressed, int p_button, double p_x, double p_y, int p_modifiers);

+ static void mouse_move_callback(double p_x, double p_y, double p_rel_x, double p_rel_y, int p_modifiers);

+ static int mouse_wheel_callback(double p_delta_x, double p_delta_y);

+ static void touch_callback(int p_type, int p_count);

+ static void key_callback(int p_pressed, int p_repeat, int p_modifiers);

+ static void vk_input_text_callback(const char *p_text, int p_cursor);

+ static void gamepad_callback(int p_index, int p_connected, const char *p_id, const char *p_guid);

+ void process_joypads();

+ static void _js_utterance_callback(int p_event, int p_id, int p_pos);

+

+ static Vector<String> get_rendering_drivers_func();

+ static DisplayServer *create_func(const String &p_rendering_driver, WindowMode p_window_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Vector2i *p_position, const Vector2i &p_resolution, Error &r_error);

+

+ static void _dispatch_input_event(const Ref<InputEvent> &p_event);

+

+ static void request_quit_callback();

+ static void window_blur_callback();

+ static void update_voices_callback(int p_size, const char **p_voice);

+ static void update_clipboard_callback(const char *p_text);

+ static void send_window_event_callback(int p_notification);

+ static void drop_files_js_callback(char **p_filev, int p_filec);

+

+protected:

+ int get_current_video_driver() const;

+

+public:

+ // Override return type to make writing static callbacks less tedious.

+ static DisplayServerWeb *get_singleton();

+

+ // utilities

+ bool check_size_force_redraw();

+

+ // from DisplayServer

+ virtual bool has_feature(Feature p_feature) const override;

+ virtual String get_name() const override;

+

+ // tts

+ virtual bool tts_is_speaking() const override;

+ virtual bool tts_is_paused() const override;

+ virtual TypedArray<Dictionary> tts_get_voices() const override;

+

+ virtual void tts_speak(const String &p_text, const String &p_voice, int p_volume = 50, float p_pitch = 1.f, float p_rate = 1.f, int p_utterance_id = 0, bool p_interrupt = false) override;

+ virtual void tts_pause() override;

+ virtual void tts_resume() override;

+ virtual void tts_stop() override;

+

+ // cursor

+ virtual void cursor_set_shape(CursorShape p_shape) override;

+ virtual CursorShape cursor_get_shape() const override;

+ virtual void cursor_set_custom_image(const Ref<Resource> &p_cursor, CursorShape p_shape = CURSOR_ARROW, const Vector2 &p_hotspot = Vector2()) override;

+

+ // mouse

+ virtual void mouse_set_mode(MouseMode p_mode) override;

+ virtual MouseMode mouse_get_mode() const override;

+ virtual Point2i mouse_get_position() const override;

+

+ // touch

+ virtual bool screen_is_touchscreen(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;

+

+ // clipboard

+ virtual void clipboard_set(const String &p_text) override;

+ virtual String clipboard_get() const override;

+

+ // screen

+ virtual int get_screen_count() const override;

+ virtual Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;

+ virtual Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;

+ virtual Rect2i screen_get_usable_rect(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;

+ virtual int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;

+ virtual float screen_get_scale(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;

+ virtual float screen_get_refresh_rate(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;

+

+ virtual void virtual_keyboard_show(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), VirtualKeyboardType p_type = KEYBOARD_TYPE_DEFAULT, int p_max_input_length = -1, int p_cursor_start = -1, int p_cursor_end = -1) override;

+ virtual void virtual_keyboard_hide() override;

+

+ // windows

+ virtual Vector<DisplayServer::WindowID> get_window_list() const override;

+ virtual WindowID get_window_at_screen_position(const Point2i &p_position) const override;

+

+ virtual void window_attach_instance_id(ObjectID p_instance, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual ObjectID window_get_attached_instance_id(WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual void window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;

+

+ virtual void window_set_window_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual void window_set_input_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual void window_set_input_text_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;

+

+ virtual void window_set_drop_files_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;

+

+ virtual void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID) override;

+

+ virtual int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const override;

+ virtual void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID) override;

+

+ virtual Point2i window_get_position(WindowID p_window = MAIN_WINDOW_ID) const override;

+ virtual void window_set_position(const Point2i &p_position, WindowID p_window = MAIN_WINDOW_ID) override;

+

+ virtual void window_set_transient(WindowID p_window, WindowID p_parent) override;

+

+ virtual void window_set_max_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual Size2i window_get_max_size(WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual void window_set_min_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual Size2i window_get_min_size(WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual void window_set_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual Size2i window_get_size(WindowID p_window = MAIN_WINDOW_ID) const override;

+ virtual Size2i window_get_real_size(WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual void window_set_mode(WindowMode p_mode, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual WindowMode window_get_mode(WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual void window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual bool window_get_flag(WindowFlags p_flag, WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;

+ virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;

+

+ virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;

+

+ virtual bool can_any_window_draw() const override;

+

+ // events

+ virtual void process_events() override;

+

+ // icon

+ virtual void set_icon(const Ref<Image> &p_icon) override;

+

+ // others

+ virtual bool get_swap_cancel_ok() override;

+ virtual void swap_buffers() override;

+

+ static void register_web_driver();

+ DisplayServerWeb(const String &p_rendering_driver, WindowMode p_window_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Point2i *p_position, const Size2i &p_resolution, Error &r_error);

+ ~DisplayServerWeb();

+};

+

+#endif // DISPLAY_SERVER_WEB_H