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3416f7b521
Added as an export option "Experimental Virtual Keyboard". There is no zoom, so text/line edit must be in the top part of the screen, or it will get hidden by the virtual keyboard. UTF8/Latin-1 only (I think regular UTF-8 should work out of the box in 4.0 but I can't test it). It uses an hidden textarea or input, based on the multiline variable, and only gets activated if the device has a touchscreen. This could cause problems on devices with both touchscreen and a real keyboard (although input should still work in general with some minor focus issues). I'm thinking of a system to detect the first physical keystroke and disable it in case, but it might do more harm then good, so it must be well thought.
208 lines
9.8 KiB
C++
208 lines
9.8 KiB
C++
/*************************************************************************/
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/* display_server_javascript.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef DISPLAY_SERVER_JAVASCRIPT_H
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#define DISPLAY_SERVER_JAVASCRIPT_H
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#include "servers/display_server.h"
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#include <emscripten.h>
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#include <emscripten/html5.h>
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class DisplayServerJavaScript : public DisplayServer {
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private:
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WindowMode window_mode = WINDOW_MODE_WINDOWED;
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ObjectID window_attached_instance_id = {};
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Callable window_event_callback;
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Callable input_event_callback;
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Callable input_text_callback;
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Callable drop_files_callback;
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String clipboard;
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Ref<InputEventKey> deferred_key_event;
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Point2 touches[32];
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char canvas_id[256] = { 0 };
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bool cursor_inside_canvas = true;
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CursorShape cursor_shape = CURSOR_ARROW;
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Point2i last_click_pos = Point2(-100, -100); // TODO check this again.
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double last_click_ms = 0;
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int last_click_button_index = -1;
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bool swap_cancel_ok = false;
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// utilities
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static Point2 compute_position_in_canvas(int p_x, int p_y);
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static void focus_canvas();
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static bool is_canvas_focused();
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template <typename T>
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static void dom2godot_mod(T *emscripten_event_ptr, Ref<InputEventWithModifiers> godot_event);
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static Ref<InputEventKey> setup_key_event(const EmscriptenKeyboardEvent *emscripten_event);
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static const char *godot2dom_cursor(DisplayServer::CursorShape p_shape);
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// events
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static EM_BOOL fullscreen_change_callback(int p_event_type, const EmscriptenFullscreenChangeEvent *p_event, void *p_user_data);
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static EM_BOOL keydown_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data);
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static EM_BOOL keypress_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data);
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static EM_BOOL keyup_callback(int p_event_type, const EmscriptenKeyboardEvent *p_event, void *p_user_data);
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static void vk_input_text_callback(const char *p_text, int p_cursor);
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static EM_BOOL mousemove_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data);
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static EM_BOOL mouse_button_callback(int p_event_type, const EmscriptenMouseEvent *p_event, void *p_user_data);
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static EM_BOOL wheel_callback(int p_event_type, const EmscriptenWheelEvent *p_event, void *p_user_data);
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static EM_BOOL touch_press_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data);
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static EM_BOOL touchmove_callback(int p_event_type, const EmscriptenTouchEvent *p_event, void *p_user_data);
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static void gamepad_callback(int p_index, int p_connected, const char *p_id, const char *p_guid);
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void process_joypads();
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static Vector<String> get_rendering_drivers_func();
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static DisplayServer *create_func(const String &p_rendering_driver, DisplayServer::WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
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static void _dispatch_input_event(const Ref<InputEvent> &p_event);
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static void request_quit_callback();
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static void update_clipboard_callback(const char *p_text);
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static void send_window_event_callback(int p_notification);
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static void drop_files_js_callback(char **p_filev, int p_filec);
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protected:
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int get_current_video_driver() const;
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public:
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// Override return type to make writing static callbacks less tedious.
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static DisplayServerJavaScript *get_singleton();
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// utilities
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bool check_size_force_redraw();
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// from DisplayServer
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void alert(const String &p_alert, const String &p_title = "ALERT!") override;
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bool has_feature(Feature p_feature) const override;
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String get_name() const override;
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// cursor
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void cursor_set_shape(CursorShape p_shape) override;
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CursorShape cursor_get_shape() const override;
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void cursor_set_custom_image(const RES &p_cursor, CursorShape p_shape = CURSOR_ARROW, const Vector2 &p_hotspot = Vector2()) override;
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// mouse
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void mouse_set_mode(MouseMode p_mode) override;
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MouseMode mouse_get_mode() const override;
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// touch
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bool screen_is_touchscreen(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
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// clipboard
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void clipboard_set(const String &p_text) override;
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String clipboard_get() const override;
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// screen
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int get_screen_count() const override;
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Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
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Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
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Rect2i screen_get_usable_rect(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
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int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
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float screen_get_scale(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
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void virtual_keyboard_show(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), bool p_multiline = false, int p_max_input_length = -1, int p_cursor_start = -1, int p_cursor_end = -1) override;
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void virtual_keyboard_hide() override;
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// windows
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Vector<DisplayServer::WindowID> get_window_list() const override;
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WindowID get_window_at_screen_position(const Point2i &p_position) const override;
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void window_attach_instance_id(ObjectID p_instance, WindowID p_window = MAIN_WINDOW_ID) override;
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ObjectID window_get_attached_instance_id(WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
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void window_set_window_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
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void window_set_input_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
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void window_set_input_text_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
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void window_set_drop_files_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
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void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID) override;
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int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID) override;
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Point2i window_get_position(WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_set_position(const Point2i &p_position, WindowID p_window = MAIN_WINDOW_ID) override;
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void window_set_transient(WindowID p_window, WindowID p_parent) override;
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void window_set_max_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
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Size2i window_get_max_size(WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_set_min_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
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Size2i window_get_min_size(WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_set_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
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Size2i window_get_size(WindowID p_window = MAIN_WINDOW_ID) const override;
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Size2i window_get_real_size(WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_set_mode(WindowMode p_mode, WindowID p_window = MAIN_WINDOW_ID) override;
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WindowMode window_get_mode(WindowID p_window = MAIN_WINDOW_ID) const override;
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bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window = MAIN_WINDOW_ID) override;
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bool window_get_flag(WindowFlags p_flag, WindowID p_window = MAIN_WINDOW_ID) const override;
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void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
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void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
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bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
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bool can_any_window_draw() const override;
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// events
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void process_events() override;
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// icon
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void set_icon(const Ref<Image> &p_icon) override;
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// others
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bool get_swap_cancel_ok() override;
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void swap_buffers() override;
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static void register_javascript_driver();
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DisplayServerJavaScript(const String &p_rendering_driver, WindowMode p_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
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~DisplayServerJavaScript();
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};
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#endif // DISPLAY_SERVER_JAVASCRIPT_H
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