godot/platform/macos/display_server_embedded.h

/**************************************************************************/
/*  display_server_embedded.h                                             */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#pragma once

#include "display_server_macos_base.h"

@class CAContext;
@class CALayer;
class GLManagerEmbedded;
class RenderingContextDriver;
class RenderingDevice;

struct DisplayServerEmbeddedState {
	/*! Default to a scale of 2.0, which is the most common. */
	float screen_max_scale = 2.0f;
	float screen_dpi = 96.0f;
	/*! Scale for window displaying embedded content */
	float screen_window_scale = 2.0f;
	/*! The display ID of the window which is displaying the embedded process content. */
	uint32_t display_id = -1;

	void serialize(PackedByteArray &r_data);
	Error deserialize(const PackedByteArray &p_data);

	_FORCE_INLINE_ bool operator==(const DisplayServerEmbeddedState &p_other) const {
		return screen_max_scale == p_other.screen_max_scale && screen_dpi == p_other.screen_dpi && display_id == p_other.display_id;
	}
};

class DisplayServerEmbedded : public DisplayServerMacOSBase {
	GDSOFTCLASS(DisplayServerEmbedded, DisplayServerMacOSBase)

	DisplayServerEmbeddedState state;

	NativeMenu *native_menu = nullptr;

	HashMap<WindowID, ObjectID> window_attached_instance_id;

	HashMap<WindowID, Callable> window_event_callbacks;
	HashMap<WindowID, Callable> window_resize_callbacks;
	HashMap<WindowID, Callable> input_event_callbacks;
	HashMap<WindowID, Callable> input_text_callbacks;

	WindowID window_id_counter = MAIN_WINDOW_ID;

	bool transparent = false;

	CAContext *ca_context = nullptr;
	// Either be a CAMetalLayer or a CALayer depending on the rendering driver.
	CALayer *layer = nullptr;
#ifdef GLES3_ENABLED
	GLManagerEmbedded *gl_manager = nullptr;
#endif

#if defined(RD_ENABLED)
	RenderingContextDriver *rendering_context = nullptr;
	RenderingDevice *rendering_device = nullptr;
#endif

	String rendering_driver;

	Point2i ime_last_position;
	Point2i im_selection;
	String im_text;

	MouseMode mouse_mode = MOUSE_MODE_VISIBLE;
	MouseMode mouse_mode_base = MOUSE_MODE_VISIBLE;
	MouseMode mouse_mode_override = MOUSE_MODE_VISIBLE;
	bool mouse_mode_override_enabled = false;
	void _mouse_update_mode();

	CursorShape cursor_shape = CURSOR_ARROW;

	struct Joy {
		String name;
		uint64_t timestamp = 0;

		Joy() = default;
		Joy(const String &p_name) :
				name(p_name) {}
	};
	HashMap<int, Joy> joysticks;

public:
	static void register_embedded_driver();
	static DisplayServer *create_func(const String &p_rendering_driver, WindowMode p_mode, DisplayServer::VSyncMode p_vsync_mode, uint32_t p_flags, const Vector2i *p_position, const Vector2i &p_resolution, int p_screen, Context p_context, int64_t p_parent_window, Error &r_error);
	static Vector<String> get_rendering_drivers_func();

	// MARK: - Events

	virtual void process_events() 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;

	static void _dispatch_input_events(const Ref<InputEvent> &p_event);
	void send_input_event(const Ref<InputEvent> &p_event, DisplayServer::WindowID p_id = MAIN_WINDOW_ID) const;
	void send_input_text(const String &p_text, DisplayServer::WindowID p_id = MAIN_WINDOW_ID) const;
	void send_window_event(DisplayServer::WindowEvent p_event, DisplayServer::WindowID p_id = MAIN_WINDOW_ID) const;
	void _window_callback(const Callable &p_callable, const Variant &p_arg) const;

	virtual void beep() const override;

	// MARK: - Mouse
	virtual void mouse_set_mode(MouseMode p_mode) override;
	virtual MouseMode mouse_get_mode() const override;
	virtual void mouse_set_mode_override(MouseMode p_mode) override;
	virtual MouseMode mouse_get_mode_override() const override;
	virtual void mouse_set_mode_override_enabled(bool p_override_enabled) override;
	virtual bool mouse_is_mode_override_enabled() const override;

	virtual void warp_mouse(const Point2i &p_position) override;
	virtual Point2i mouse_get_position() const override;
	virtual BitField<MouseButtonMask> mouse_get_button_state() const override;

	// MARK: - Window

	virtual bool has_feature(Feature p_feature) const override;
	virtual String get_name() const override;

	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 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_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 float screen_get_max_scale() const override;

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

	virtual bool can_any_window_draw() const override;

	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 void window_set_vsync_mode(DisplayServer::VSyncMode p_vsync_mode, WindowID p_window = MAIN_WINDOW_ID) override;
	virtual DisplayServer::VSyncMode window_get_vsync_mode(WindowID p_vsync_mode) const override;

	void update_im_text(const Point2i &p_selection, const String &p_text);
	virtual Point2i ime_get_selection() const override;
	virtual String ime_get_text() const override;

	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;

	void set_state(const DisplayServerEmbeddedState &p_state);
	virtual void swap_buffers() override;

	DisplayServerEmbedded(const String &p_rendering_driver, DisplayServer::WindowMode p_mode, DisplayServer::VSyncMode p_vsync_mode, uint32_t p_flags, const Vector2i *p_position, const Vector2i &p_resolution, int p_screen, Context p_context, Error &r_error);
	~DisplayServerEmbedded();
};