haiku/headers/private/servers/app/GraphicsBuffer.h

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//------------------------------------------------------------------------------
// Copyright (c) 2001-2002, Haiku, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// File Name: GraphicsBuffer.h
// Author: DarkWyrm <bpmagic@columbus.rr.com>
//
// Description: Convenience class for working with graphics buffers
// Based on concepts from the Anti-Grain Geometry vector gfx library
//------------------------------------------------------------------------------
#ifndef GFX_BUFFER_H
#define GFX_BUFFER_H
#include <SupportDefs.h>
class GraphicsBuffer
{
public:
GraphicsBuffer(uint8 *buffer, uint32 width, uint32 height, uint32 rowbytes);
GraphicsBuffer(const GraphicsBuffer &buffer);
~GraphicsBuffer();
void SetTo(uint8 *buffer, uint32 width, uint32 height, uint32 rowbytes);
void Unset(void);
uint8 *Bits(void) const { return fBuffer; }
uint8 *RowAt(uint32 row) { return fRowList[row]; }
uint32 Width(void) const { return fWidth; }
uint32 Height(void) const { return fHeight; }
uint32 BytesPerRow(void) const { return fBytesPerRow; }
GraphicsBuffer &operator=(const GraphicsBuffer &buf);
private:
uint32 fWidth;
uint32 fHeight;
uint8 *fBuffer;
uint8 **fRowList;
uint32 fBytesPerRow;
uint32 fMaxHeight;
};
#endif