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godot/platform/web/display_server_web.h
Mel Collins 8406e60522 Add InputEventKey.location to tell left from right 
This adds a new enum `KeyLocation` and associated property
`InputEventKey.location`, which indicates the left/right location of key
events which may come from one of two physical keys, eg. Shift, Ctrl.

It also adds simulation of missing Shift KEYUP events for Windows.
When multiple Shifts are held down at the same time, Windows natively
only sends a KEYUP for the last one to be released.
2024-01-26 14:42:28 +01:00

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/**************************************************************************/
/* display_server_web.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "godot_js.h"
#include <emscripten.h>
#include <emscripten/html5.h>
class DisplayServerWeb : public DisplayServer {
// No need to register with GDCLASS, it's platform-specific and nothing is added.
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 ime_active = false;
bool ime_started = false;
String ime_text;
Vector2i ime_selection;
struct KeyEvent {
bool pressed = false;
bool echo = false;
bool raw = false;
Key keycode = Key::NONE;
Key physical_keycode = Key::NONE;
Key key_label = Key::NONE;
uint32_t unicode = 0;
KeyLocation location = KeyLocation::UNSPECIFIED;
int mod = 0;
};
Vector<KeyEvent> key_event_buffer;
int key_event_pos = 0;
bool swap_cancel_ok = false;
bool tts = false;
// utilities
static void dom2godot_mod(Ref<InputEventWithModifiers> ev, int p_mod, Key p_keycode);
static const char *godot2dom_cursor(DisplayServer::CursorShape p_shape);
// events
WASM_EXPORT static void fullscreen_change_callback(int p_fullscreen);
static void _fullscreen_change_callback(int p_fullscreen);
WASM_EXPORT static int mouse_button_callback(int p_pressed, int p_button, double p_x, double p_y, int p_modifiers);
static int _mouse_button_callback(int p_pressed, int p_button, double p_x, double p_y, int p_modifiers);
WASM_EXPORT static void mouse_move_callback(double p_x, double p_y, double p_rel_x, double p_rel_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);
WASM_EXPORT static int mouse_wheel_callback(double p_delta_x, double p_delta_y);
static int _mouse_wheel_callback(double p_delta_x, double p_delta_y);
WASM_EXPORT static void touch_callback(int p_type, int p_count);
static void _touch_callback(int p_type, int p_count);
WASM_EXPORT static void key_callback(int p_pressed, int p_repeat, int p_modifiers);
static void _key_callback(const String &p_key_event_code, const String &p_key_event_key, int p_pressed, int p_repeat, int p_modifiers);
WASM_EXPORT static void vk_input_text_callback(const char *p_text, int p_cursor);
static void _vk_input_text_callback(const String &p_text, int p_cursor);
WASM_EXPORT static void gamepad_callback(int p_index, int p_connected, const char *p_id, const char *p_guid);
static void _gamepad_callback(int p_index, int p_connected, const String &p_id, const String &p_guid);
WASM_EXPORT static void js_utterance_callback(int p_event, int p_id, int p_pos);
static void _js_utterance_callback(int p_event, int p_id, int p_pos);
WASM_EXPORT static void ime_callback(int p_type, const char *p_text);
static void _ime_callback(int p_type, const String &p_text);
WASM_EXPORT static void request_quit_callback();
static void _request_quit_callback();
WASM_EXPORT static void window_blur_callback();
static void _window_blur_callback();
WASM_EXPORT static void update_voices_callback(int p_size, const char **p_voice);
static void _update_voices_callback(const Vector<String> &p_voices);
WASM_EXPORT static void update_clipboard_callback(const char *p_text);
static void _update_clipboard_callback(const String &p_text);
WASM_EXPORT static void send_window_event_callback(int p_notification);
static void _send_window_event_callback(int p_notification);
WASM_EXPORT static void drop_files_js_callback(const char **p_filev, int p_filec);
static void _drop_files_js_callback(const Vector<String> &p_files);
void process_joypads();
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, int p_screen, Error &r_error);
static void _dispatch_input_event(const Ref<InputEvent> &p_event);
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;
// ime
virtual void window_set_ime_active(const bool p_active, WindowID p_window = MAIN_WINDOW_ID) override;
virtual void window_set_ime_position(const Point2i &p_pos, WindowID p_window = MAIN_WINDOW_ID) override;
virtual Point2i ime_get_selection() const override;
virtual String ime_get_text() const override;
// touch
virtual bool is_touchscreen_available() 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 int get_primary_screen() 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 Point2i window_get_position_with_decorations(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_size_with_decorations(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_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override;
virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
virtual bool can_any_window_draw() const override;
virtual DisplayServer::VSyncMode window_get_vsync_mode(WindowID p_vsync_mode) 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, int p_screen, Error &r_error);
~DisplayServerWeb();
};
#endif // DISPLAY_SERVER_WEB_H
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