1 /*************************************************************************/ 2 /* os_javascript.h */ 3 /*************************************************************************/ 4 /* This file is part of: */ 5 /* GODOT ENGINE */ 6 /* https://godotengine.org */ 7 /*************************************************************************/ 8 /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ 9 /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ 10 /* */ 11 /* Permission is hereby granted, free of charge, to any person obtaining */ 12 /* a copy of this software and associated documentation files (the */ 13 /* "Software"), to deal in the Software without restriction, including */ 14 /* without limitation the rights to use, copy, modify, merge, publish, */ 15 /* distribute, sublicense, and/or sell copies of the Software, and to */ 16 /* permit persons to whom the Software is furnished to do so, subject to */ 17 /* the following conditions: */ 18 /* */ 19 /* The above copyright notice and this permission notice shall be */ 20 /* included in all copies or substantial portions of the Software. */ 21 /* */ 22 /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ 23 /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ 24 /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ 25 /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ 26 /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ 27 /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ 28 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ 29 /*************************************************************************/ 30 31 #ifndef OS_JAVASCRIPT_H 32 #define OS_JAVASCRIPT_H 33 34 #include "audio_driver_javascript.h" 35 #include "drivers/unix/os_unix.h" 36 #include "main/input_default.h" 37 #include "servers/audio_server.h" 38 #include "servers/visual/rasterizer.h" 39 40 #include <emscripten/html5.h> 41 42 class OS_JavaScript : public OS_Unix { 43 44 VideoMode video_mode; 45 Vector2 windowed_size; 46 bool window_maximized; 47 bool entering_fullscreen; 48 bool just_exited_fullscreen; 49 bool transparency_enabled; 50 51 EMSCRIPTEN_WEBGL_CONTEXT_HANDLE webgl_ctx; 52 53 InputDefault *input; 54 Ref<InputEventKey> deferred_key_event; 55 CursorShape cursor_shape; 56 String cursors[CURSOR_MAX]; 57 Map<CursorShape, Vector<Variant> > cursors_cache; 58 Point2 touches[32]; 59 60 Point2i last_click_pos; 61 double last_click_ms; 62 int last_click_button_index; 63 64 int last_width; 65 int last_height; 66 67 MainLoop *main_loop; 68 int video_driver_index; 69 AudioDriverJavaScript *audio_driver_javascript; 70 VisualServer *visual_server; 71 72 bool swap_ok_cancel; 73 bool idb_available; 74 int64_t sync_wait_time; 75 int64_t last_sync_check_time; 76 77 static EM_BOOL fullscreen_change_callback(int p_event_type, const EmscriptenFullscreenChangeEvent *p_event, void *p_user_data); 78 79 static EM_BOOL keydown_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data); 80 static EM_BOOL keypress_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data); 81 static EM_BOOL keyup_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data); 82 83 static EM_BOOL mousemove_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data); 84 static EM_BOOL mouse_button_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data); 85 86 static EM_BOOL wheel_callback(int p_event_type, const EmscriptenWheelEvent *p_event, void *p_user_data); 87 88 static EM_BOOL touch_press_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data); 89 static EM_BOOL touchmove_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data); 90 91 static EM_BOOL gamepad_change_callback(int p_event_type, const EmscriptenGamepadEvent *p_event, void *p_user_data); 92 void process_joypads(); 93 94 static void file_access_close_callback(const String &p_file, int p_flags); 95 96 protected: 97 void resume_audio(); 98 99 virtual int get_current_video_driver() const; 100 101 virtual void initialize_core(); 102 virtual Error initialize(const VideoMode &p_desired, int p_video_driver, int p_audio_driver); 103 104 virtual void set_main_loop(MainLoop *p_main_loop); 105 virtual void delete_main_loop(); 106 107 virtual void finalize(); 108 109 virtual bool _check_internal_feature_support(const String &p_feature); 110 111 public: 112 String canvas_id; 113 void finalize_async(); 114 bool check_size_force_redraw(); 115 116 // Override return type to make writing static callbacks less tedious. 117 static OS_JavaScript *get_singleton(); 118 119 virtual bool get_swap_ok_cancel(); 120 virtual void swap_buffers(); 121 virtual void set_video_mode(const VideoMode &p_video_mode, int p_screen = 0); 122 virtual VideoMode get_video_mode(int p_screen = 0) const; 123 virtual void get_fullscreen_mode_list(List<VideoMode> *p_list, int p_screen = 0) const; 124 125 virtual void set_window_size(const Size2); 126 virtual Size2 get_window_size() const; 127 virtual void set_window_maximized(bool p_enabled); 128 virtual bool is_window_maximized() const; 129 virtual void set_window_fullscreen(bool p_enabled); 130 virtual bool is_window_fullscreen() const; 131 virtual Size2 get_screen_size(int p_screen = -1) const; 132 133 virtual Point2 get_mouse_position() const; 134 virtual int get_mouse_button_state() const; 135 virtual void set_cursor_shape(CursorShape p_shape); 136 virtual void set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot); 137 virtual void set_mouse_mode(MouseMode p_mode); 138 virtual MouseMode get_mouse_mode() const; 139 140 virtual bool get_window_per_pixel_transparency_enabled() const; 141 virtual void set_window_per_pixel_transparency_enabled(bool p_enabled); 142 143 virtual bool has_touchscreen_ui_hint() const; 144 145 virtual bool is_joy_known(int p_device); 146 virtual String get_joy_guid(int p_device) const; 147 148 virtual int get_video_driver_count() const; 149 virtual const char *get_video_driver_name(int p_driver) const; 150 151 virtual int get_audio_driver_count() const; 152 virtual const char *get_audio_driver_name(int p_driver) const; 153 154 virtual void set_clipboard(const String &p_text); 155 virtual String get_clipboard() const; 156 157 virtual MainLoop *get_main_loop() const; 158 bool main_loop_iterate(); 159 160 virtual Error execute(const String &p_path, const List<String> &p_arguments, bool p_blocking = true, ProcessID *r_child_id = NULL, String *r_pipe = NULL, int *r_exitcode = NULL, bool read_stderr = false, Mutex *p_pipe_mutex = NULL); 161 virtual Error kill(const ProcessID &p_pid); 162 virtual int get_process_id() const; 163 164 virtual void alert(const String &p_alert, const String &p_title = "ALERT!"); 165 virtual void set_window_title(const String &p_title); 166 virtual void set_icon(const Ref<Image> &p_icon); 167 String get_executable_path() const; 168 virtual Error shell_open(String p_uri); 169 virtual String get_name() const; add_frame_delay(bool p_can_draw)170 virtual void add_frame_delay(bool p_can_draw) {} 171 virtual bool can_draw() const; 172 173 virtual String get_cache_path() const; 174 virtual String get_config_path() const; 175 virtual String get_data_path() const; 176 virtual String get_user_data_dir() const; 177 178 virtual OS::PowerState get_power_state(); 179 virtual int get_power_seconds_left(); 180 virtual int get_power_percent_left(); 181 182 void set_idb_available(bool p_idb_available); 183 virtual bool is_userfs_persistent() const; 184 185 OS_JavaScript(int p_argc, char *p_argv[]); 186 }; 187 188 #endif 189