godot/servers/display_server_headless.h

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/*  display_server_headless.h                                             */
/**************************************************************************/
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/*                             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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#ifndef DISPLAY_SERVER_HEADLESS_H
#define DISPLAY_SERVER_HEADLESS_H

#include "servers/display_server.h"

#include "servers/rendering/dummy/rasterizer_dummy.h"

class DisplayServerHeadless : public DisplayServer {
private:
	friend class DisplayServer;

	static Vector<String> get_rendering_drivers_func() {
		Vector<String> drivers;
		drivers.push_back("dummy");
		return drivers;
	}

	static DisplayServer *create_func(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, Error &r_error) {
		r_error = OK;
		RasterizerDummy::make_current();
		return memnew(DisplayServerHeadless());
	}

	NativeMenu *native_menu = nullptr;

public:
	bool has_feature(Feature p_feature) const override { return false; }
	String get_name() const override { return "headless"; }

	int get_screen_count() const override { return 0; }
	int get_primary_screen() const override { return 0; };
	Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const override { return Point2i(); }
	Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const override { return Size2i(); }
	Rect2i screen_get_usable_rect(int p_screen = SCREEN_OF_MAIN_WINDOW) const override { return Rect2i(); }
	int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const override { return 96; /* 0 might cause issues */ }
	float screen_get_scale(int p_screen = SCREEN_OF_MAIN_WINDOW) const override { return 1; }
	float screen_get_max_scale() const override { return 1; }
	float screen_get_refresh_rate(int p_screen = SCREEN_OF_MAIN_WINDOW) const override { return SCREEN_REFRESH_RATE_FALLBACK; }

	Vector<DisplayServer::WindowID> get_window_list() const override { return Vector<DisplayServer::WindowID>(); }

	WindowID create_sub_window(WindowMode p_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Rect2i &p_rect = Rect2i()) override { return 0; }
	void show_window(WindowID p_id) override {}
	void delete_sub_window(WindowID p_id) override {}

	WindowID get_window_at_screen_position(const Point2i &p_position) const override { return 0; }

	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 { return ObjectID(); }

	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 {}

	void window_set_mouse_passthrough(const Vector<Vector2> &p_region, WindowID p_window = MAIN_WINDOW_ID) override {}

	int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const override { return -1; }
	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 { return Point2i(); }
	Point2i window_get_position_with_decorations(WindowID p_window = MAIN_WINDOW_ID) const override { return Point2i(); }
	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 { return Size2i(); }

	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 { return Size2i(); }

	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 { return Size2i(); }
	Size2i window_get_size_with_decorations(WindowID p_window = MAIN_WINDOW_ID) const override { return Size2i(); }

	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 { return WINDOW_MODE_MINIMIZED; }

	void window_set_vsync_mode(VSyncMode p_vsync_mode, WindowID p_window = MAIN_WINDOW_ID) override {}
	VSyncMode window_get_vsync_mode(WindowID p_window) const override { return VSyncMode::VSYNC_ENABLED; }

	bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const override { return false; }

	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 { return false; }

	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_is_focused(WindowID p_window = MAIN_WINDOW_ID) const override { return true; };

	bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override { return false; }

	bool can_any_window_draw() const override { return false; }

	void window_set_ime_active(const bool p_active, WindowID p_window = MAIN_WINDOW_ID) override {}
	void window_set_ime_position(const Point2i &p_pos, WindowID p_window = MAIN_WINDOW_ID) override {}

	void process_events() override {}

	void set_icon(const Ref<Image> &p_icon) override {}

	DisplayServerHeadless() {
		native_menu = memnew(NativeMenu);
	}
	~DisplayServerHeadless() {
		if (native_menu) {
			memdelete(native_menu);
			native_menu = nullptr;
		}
	}
};

#endif // DISPLAY_SERVER_HEADLESS_H