haiku/src/servers/app/RenderingBuffer.h

// RenderingBuffer.h

#ifndef RENDERING_BUFFER_H
#define RENDERING_BUFFER_H

#include <GraphicsDefs.h>
#include "IntRect.h"

class RenderingBuffer {
 public:
								RenderingBuffer() {}
	virtual						~RenderingBuffer() {}

	virtual	status_t			InitCheck() const = 0;

	virtual	color_space			ColorSpace() const = 0;
	virtual	void*				Bits() const = 0;
	virtual	uint32				BytesPerRow() const = 0;
	// the *count* of the pixels per line
	virtual	uint32				Width() const = 0;
	// the *count* of lines
	virtual	uint32				Height() const = 0;

	inline	uint32				BitsLength() const
									{ return Height() * BytesPerRow(); }

	inline	IntRect				Bounds() const
									{ return IntRect(0, 0, Width() - 1,
										Height() - 1); }
};

#endif // RENDERING_BUFFER_H