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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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; either version 2
* of the License, or (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#ifndef GOB_SURFACE_H
#define GOB_SURFACE_H
#include "common/scummsys.h"
#include "common/ptr.h"
#include "common/rational.h"
namespace Common {
class SeekableReadStream;
}
namespace Gob {
enum ImageType {
kImageTypeNone = -1,
kImageTypeTGA = 0,
kImageTypeLBM,
kImageTypeBRC,
kImageTypeBMP,
kImageTypeJPEG
};
/** An iterator over a surface's image data, automatically handles different color depths. */
class Pixel {
public:
Pixel(byte *vidMem, uint8 bpp, byte *min, byte *max);
Pixel &operator++();
Pixel operator++(int x);
Pixel &operator--();
Pixel operator--(int x);
Pixel &operator+=(int x);
Pixel &operator-=(int x);
uint32 get() const;
void set(uint32 p);
bool isValid() const;
private:
byte *_vidMem;
byte *_min, *_max;
uint8 _bpp;
};
/** A const iterator over a surface's image data, automatically handles different color depths. */
class ConstPixel {
public:
ConstPixel(const byte *vidMem, uint8 bpp, const byte *min, const byte *max);
ConstPixel &operator++();
ConstPixel operator++(int x);
ConstPixel &operator--();
ConstPixel operator--(int x);
ConstPixel &operator+=(int x);
ConstPixel &operator-=(int x);
uint32 get() const;
bool isValid() const;
private:
const byte *_vidMem;
const byte *_min, *_max;
uint8 _bpp;
};
class Surface {
public:
Surface(uint16 width, uint16 height, uint8 bpp, byte *vidMem = 0);
~Surface();
uint16 getWidth () const;
uint16 getHeight() const;
uint8 getBPP () const;
byte *getData(uint16 x = 0, uint16 y = 0);
const byte *getData(uint16 x = 0, uint16 y = 0) const;
void resize(uint16 width, uint16 height);
void setBPP(uint8 bpp);
Pixel get(uint16 x = 0, uint16 y = 0);
ConstPixel get(uint16 x = 0, uint16 y = 0) const;
void blit(const Surface &from, int16 left, int16 top, int16 right, int16 bottom,
int16 x, int16 y, int32 transp = -1);
void blit(const Surface &from, int16 x, int16 y, int32 transp = -1);
void blit(const Surface &from, int32 transp = -1);
void blitScaled(const Surface &from, int16 left, int16 top, int16 right, int16 bottom,
int16 x, int16 y, Common::Rational scale, int32 transp = -1);
void blitScaled(const Surface &from, int16 x, int16 y, Common::Rational scale, int32 transp = -1);
void blitScaled(const Surface &from, Common::Rational scale, int32 transp = -1);
void fillRect(uint16 left, uint16 top, uint16 right, uint16 bottom, uint32 color);
void fill(uint32 color);
void clear();
void shadeRect(uint16 left, uint16 top, uint16 right, uint16 bottom,
uint32 color, uint8 strength);
void putPixel(uint16 x, uint16 y, uint32 color);
void drawLine(uint16 x0, uint16 y0, uint16 x1, uint16 y1, uint32 color);
void drawCircle(uint16 x0, uint16 y0, uint16 radius, uint32 color, int16 pattern = 0);
void blitToScreen(uint16 left, uint16 top, uint16 right, uint16 bottom, uint16 x, uint16 y) const;
bool loadImage(Common::SeekableReadStream &stream);
bool loadImage(Common::SeekableReadStream &stream, ImageType type);
static ImageType identifyImage(Common::SeekableReadStream &stream);
private:
uint16 _width;
uint16 _height;
uint8 _bpp;
bool _ownVidMem;
byte *_vidMem;
static bool clipBlitRect(int16 &left, int16 &top, int16 &right, int16 &bottom, int16 &x, int16 &y,
uint16 dWidth, uint16 dHeight, uint16 sWidth, uint16 sHeight);
bool loadTGA (Common::SeekableReadStream &stream);
bool loadLBM (Common::SeekableReadStream &stream);
bool loadBRC (Common::SeekableReadStream &stream);
bool loadBMP (Common::SeekableReadStream &stream);
bool loadJPEG(Common::SeekableReadStream &stream);
};
typedef Common::SharedPtr<Surface> SurfacePtr;
} // End of namespace Gob
#endif // GOB_SURFACE_H
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