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/*************************************************************************/
/* display_server_javascript.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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_JAVASCRIPT_H
#define DISPLAY_SERVER_JAVASCRIPT_H
#include "servers/display_server.h"
#include <emscripten.h>
#include <emscripten/html5.h>
class DisplayServerJavaScript : public DisplayServer {
private:
WindowMode window_mode = WINDOW_MODE_WINDOWED;
ObjectID window_attached_instance_id = {};
Callable window_event_callback;
Callable input_event_callback;
Callable input_text_callback;
Callable drop_files_callback;
String clipboard;
Ref<InputEventKey> deferred_key_event;
Point2 touches[32];
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.
double last_click_ms = 0;
int last_click_button_index = -1;
int last_width = 0;
int last_height = 0;
bool swap_cancel_ok = false;
// utilities
static Point2 compute_position_in_canvas(int p_x, int p_y);
static void focus_canvas();
static bool is_canvas_focused();
template <typename T>
static void dom2godot_mod(T *emscripten_event_ptr, Ref<InputEventWithModifiers> godot_event);
static Ref<InputEventKey> setup_key_event(const EmscriptenKeyboardEvent *emscripten_event);
static const char *godot2dom_cursor(DisplayServer::CursorShape p_shape);
// events
static EM_BOOL fullscreen_change_callback(int p_event_type, const EmscriptenFullscreenChangeEvent *p_event, void *p_user_data);
static EM_BOOL keydown_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data);
static EM_BOOL keypress_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data);
static EM_BOOL keyup_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data);
static EM_BOOL mousemove_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data);
static EM_BOOL mouse_button_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data);
static EM_BOOL wheel_callback(int p_event_type, const EmscriptenWheelEvent *p_event, void *p_user_data);
static EM_BOOL touch_press_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data);
static EM_BOOL touchmove_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data);
static EM_BOOL gamepad_change_callback(int p_event_type, const EmscriptenGamepadEvent *p_event, void *p_user_data);
void process_joypads();
static Vector<String> get_rendering_drivers_func();
static DisplayServer *create_func(const String &p_rendering_driver, DisplayServer::WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
static void _dispatch_input_event(const Ref<InputEvent> &p_event);
static void request_quit_callback();
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 DisplayServerJavaScript *get_singleton();
// utilities
bool check_size_force_redraw();
// from DisplayServer
void alert(const String &p_alert, const String &p_title = "ALERT!") override;
bool has_feature(Feature p_feature) const override;
String get_name() const override;
// cursor
void cursor_set_shape(CursorShape p_shape) override;
CursorShape cursor_get_shape() const override;
void cursor_set_custom_image(const RES &p_cursor, CursorShape p_shape = CURSOR_ARROW, const Vector2 &p_hotspot = Vector2()) override;
// mouse
void mouse_set_mode(MouseMode p_mode) override;
MouseMode mouse_get_mode() const override;
// touch
bool screen_is_touchscreen(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
// clipboard
void clipboard_set(const String &p_text) override;
String clipboard_get() const override;
// screen
int get_screen_count() const override;
Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
Rect2i screen_get_usable_rect(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
// windows
Vector<DisplayServer::WindowID> get_window_list() const override;
WindowID get_window_at_screen_position(const Point2i &p_position) const override;
void window_attach_instance_id(ObjectID p_instance, WindowID p_window = MAIN_WINDOW_ID) override;
ObjectID window_get_attached_instance_id(WindowID p_window = MAIN_WINDOW_ID) const override;
void window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
void window_set_window_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
void window_set_input_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
void window_set_input_text_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
void window_set_drop_files_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID) override;
int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const override;
void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID) override;
Point2i window_get_position(WindowID p_window = MAIN_WINDOW_ID) const override;
void window_set_position(const Point2i &p_position, WindowID p_window = MAIN_WINDOW_ID) override;
void window_set_transient(WindowID p_window, WindowID p_parent) override;
void window_set_max_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
Size2i window_get_max_size(WindowID p_window = MAIN_WINDOW_ID) const override;
void window_set_min_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
Size2i window_get_min_size(WindowID p_window = MAIN_WINDOW_ID) const override;
void window_set_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
Size2i window_get_size(WindowID p_window = MAIN_WINDOW_ID) const override;
Size2i window_get_real_size(WindowID p_window = MAIN_WINDOW_ID) const override;
void window_set_mode(WindowMode p_mode, WindowID p_window = MAIN_WINDOW_ID) override;
WindowMode window_get_mode(WindowID p_window = MAIN_WINDOW_ID) const override;
bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const override;
void window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window = MAIN_WINDOW_ID) override;
bool window_get_flag(WindowFlags p_flag, WindowID p_window = MAIN_WINDOW_ID) const override;
void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
bool can_any_window_draw() const override;
// events
void process_events() override;
// icon
void set_icon(const Ref<Image> &p_icon) override;
// others
bool get_swap_cancel_ok() override;
void swap_buffers() override;
static void register_javascript_driver();
DisplayServerJavaScript(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
~DisplayServerJavaScript();
};
#endif // DISPLAY_SERVER_JAVASCRIPT_H
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