/*
 ** gl_sysfb.h
 **
 **---------------------------------------------------------------------------
 ** Copyright 2012-2018 Alexey Lysiuk
 ** All rights reserved.
 **
 ** Redistribution and use in source and binary forms, with or without
 ** modification, are permitted provided that the following conditions
 ** are met:
 **
 ** 1. Redistributions of source code must retain the above copyright
 **    notice, this list of conditions and the following disclaimer.
 ** 2. Redistributions in binary form must reproduce the above copyright
 **    notice, this list of conditions and the following disclaimer in the
 **    documentation and/or other materials provided with the distribution.
 ** 3. The name of the author may not be used to endorse or promote products
 **    derived from this software without specific prior written permission.
 **
 ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 **---------------------------------------------------------------------------
 **
 */

#ifndef COCOA_GL_SYSFB_H_INCLUDED
#define COCOA_GL_SYSFB_H_INCLUDED

#include "v_video.h"

#ifdef __OBJC__
@class NSCursor;
@class CocoaWindow;
#else
typedef struct objc_object NSCursor;
typedef struct objc_object CocoaWindow;
#endif

class SystemGLFrameBuffer : public DFrameBuffer
{
public:
	// This must have the same parameters as the Windows version, even if they are not used!
	SystemGLFrameBuffer(void *hMonitor, bool fullscreen);
	~SystemGLFrameBuffer();

	virtual bool IsFullscreen();
	virtual void SetVSync(bool vsync);

	int GetClientWidth() override;
	int GetClientHeight() override;
	void ToggleFullscreen(bool yes) override;
	void SetWindowSize(int width, int height) override;

	void SetMode(bool fullscreen, bool hiDPI);

	static void UseHiDPI(bool hiDPI);
	static void SetCursor(NSCursor* cursor);
	static void SetWindowVisible(bool visible);
	static void SetWindowTitle(const char* title);

protected:
	SystemGLFrameBuffer() {}

	void SwapBuffers();

	void SetGammaTable(uint16_t* table);
	void ResetGammaTable();

private:
	void SetFullscreenMode();
	void SetWindowedMode();

	bool m_fullscreen;
	bool m_hiDPI;

	CocoaWindow* m_window;

	static const uint32_t GAMMA_CHANNEL_SIZE = 256;
	static const uint32_t GAMMA_CHANNEL_COUNT = 3;
	static const uint32_t GAMMA_TABLE_SIZE = GAMMA_CHANNEL_SIZE * GAMMA_CHANNEL_COUNT;

	uint16_t m_originalGamma[GAMMA_TABLE_SIZE];

	int GetTitleBarHeight() const;

	static const int MINIMUM_WIDTH  = 320;
	static const int MINIMUM_HEIGHT = 200;
};

#endif // COCOA_GL_SYSFB_H_INCLUDED
