* This file is part of OpenTTD.

 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.

 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.

 */

/** @file cocoa_v.h The Cocoa video driver. */

#ifndef VIDEO_COCOA_H

#define VIDEO_COCOA_H

#include "../video_driver.hpp"

#include "../../core/geometry_type.hpp"

extern bool _cocoa_video_started;

@class OTTD_CocoaWindowDelegate;

@class OTTD_CocoaWindow;

@class OTTD_CocoaView;

class VideoDriver_Cocoa : public VideoDriver {

private:

	Dimension orig_res;   ///< Saved window size for non-fullscreen mode.

public:

	bool setup; ///< Window is currently being created.

	OTTD_CocoaWindow *window;    ///< Pointer to window object

	OTTD_CocoaView *cocoaview;   ///< Pointer to view object

	CGColorSpaceRef color_space; ///< Window color space

	OTTD_CocoaWindowDelegate *delegate; //!< Window delegate object

public:

	VideoDriver_Cocoa();

	void Stop() override;

	void MainLoop() override;

	void MakeDirty(int left, int top, int width, int height) override;

	bool AfterBlitterChange() override;

	bool ChangeResolution(int w, int h) override;

	bool ToggleFullscreen(bool fullscreen) override;

	void EditBoxLostFocus() override;

	/* --- The following methods should be private, but can't be due to Obj-C limitations. --- */

	void MainLoopReal();

	virtual void AllocateBackingStore(bool force = false) = 0;

protected:

	Rect dirty_rect;    ///< Region of the screen that needs redrawing.

	bool buffer_locked; ///< Video buffer was locked by the main thread.

	Dimension GetScreenSize() const override;

	float GetDPIScale() override;

	void InputLoop() override;

	bool LockVideoBuffer() override;

	void UnlockVideoBuffer() override;

	bool PollEvent() override;

	void GameSizeChanged();

	const char *Initialize();

	void UpdateVideoModes();

	bool MakeWindow(int width, int height);

	virtual NSView* AllocateDrawView() = 0;

	/** Get a pointer to the video buffer. */

	virtual void *GetVideoPointer() = 0;

	/** Hand video buffer back to the drawing backend. */

	virtual void ReleaseVideoPointer() {}

private:

	bool IsFullscreen();

};

class VideoDriver_CocoaQuartz : public VideoDriver_Cocoa {

private:

	int buffer_depth;     ///< Colour depth of used frame buffer

	void *pixel_buffer;   ///< used for direct pixel access

	void *window_buffer;  ///< Colour translation from palette to screen

	int window_width;     ///< Current window width in pixel

	int window_height;    ///< Current window height in pixel

	int window_pitch;

	uint32 palette[256];  ///< Colour Palette