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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 PARALLACTION_GRAPHICS_H
#define PARALLACTION_GRAPHICS_H
#include "common/rect.h"
#include "common/stream.h"
#include "graphics/surface.h"
#include "parallaction/defs.h"
namespace Parallaction {
#include "common/pack-start.h" // START STRUCT PACKING
struct PaletteFxRange {
uint16 _timer;
uint16 _step;
uint16 _flags;
byte _first;
byte _last;
} PACKED_STRUCT;
#include "common/pack-end.h" // END STRUCT PACKING
class Font {
protected:
byte _color;
public:
Font() {}
virtual ~Font() {}
virtual void setColor(byte color) {
_color = color;
}
virtual uint32 getStringWidth(const char *s) = 0;
virtual uint16 height() = 0;
virtual void drawString(byte* buffer, uint32 pitch, const char *s) = 0;
};
struct Frames {
virtual uint16 getNum() = 0;
virtual byte* getData(uint16 index) = 0;
virtual void getRect(uint16 index, Common::Rect &r) = 0;
virtual ~Frames() { }
};
struct Cnv : public Frames {
uint16 _count; // # of frames
uint16 _width; //
uint16 _height; //
byte** field_8; // unused
byte* _data;
public:
Cnv() {
_width = _height = _count = 0;
_data = NULL;
}
Cnv(uint16 numFrames, uint16 width, uint16 height, byte* data) : _count(numFrames), _width(width), _height(height), _data(data) {
}
~Cnv() {
if (_count == 0 || _data == NULL) return;
free(_data);
}
byte* getFramePtr(uint16 index) {
if (index >= _count)
return NULL;
return &_data[index * _width * _height];
}
uint16 getNum() {
return _count;
}
byte *getData(uint16 index) {
return getFramePtr(index);
}
void getRect(uint16 index, Common::Rect &r) {
r.left = 0;
r.top = 0;
r.setWidth(_width);
r.setHeight(_height);
}
};
#define NUM_BUFFERS 4
class Parallaction;
struct DoorData;
struct GetData;
struct MaskBuffer {
// handles a 2-bit depth buffer used for z-buffering
uint16 w;
uint16 internalWidth;
uint16 h;
uint size;
byte *data;
public:
MaskBuffer() : w(0), internalWidth(0), h(0), size(0), data(0) {
}
void create(uint16 width, uint16 height) {
w = width;
internalWidth = w >> 2;
h = height;
size = (internalWidth * h);
data = (byte*)calloc(size, 1);
}
void free() {
if (data)
::free(data);
data = 0;
w = 0;
h = 0;
internalWidth = 0;
size = 0;
}
inline byte getValue(uint16 x, uint16 y) {
byte m = data[(x >> 2) + y * internalWidth];
uint n = (x & 3) << 1;
return ((3 << n) & m) >> n;
}
};
class Palette {
byte _data[768];
uint _colors;
uint _size;
bool _hb;
public:
Palette();
Palette(const Palette &pal);
void clone(const Palette &pal);
void makeBlack();
void setEntries(byte* data, uint first, uint num);
void setEntry(uint index, int red, int green, int blue);
void makeGrayscale();
void fadeTo(const Palette& target, uint step);
uint fillRGBA(byte *rgba);
void rotate(uint first, uint last, bool forward);
};
class Gfx {
public:
enum Buffers {
// bit buffers
kBitFront,
kBitBack,
kBit2
};
public:
// balloons and text
void drawBalloon(const Common::Rect& r, uint16 arg_8);
void displayString(uint16 x, uint16 y, const char *text, byte color);
void displayCenteredString(uint16 y, const char *text);
bool displayWrappedString(char *text, uint16 x, uint16 y, byte color, int16 wrapwidth = -1);
uint16 getStringWidth(const char *text);
void getStringExtent(char *text, uint16 maxwidth, int16* width, int16* height);
// cut/paste
void flatBlitCnv(Graphics::Surface *cnv, int16 x, int16 y, Gfx::Buffers buffer);
void flatBlitCnv(Frames *cnv, uint16 frame, int16 x, int16 y, Gfx::Buffers buffer);
void blitCnv(Graphics::Surface *cnv, int16 x, int16 y, uint16 z, Gfx::Buffers buffer);
void restoreBackground(const Common::Rect& r);
void backupDoorBackground(DoorData *data, int16 x, int16 y);
void restoreDoorBackground(const Common::Rect& r, byte *data, byte* background);
void backupGetBackground(GetData *data, int16 x, int16 y);
void restoreGetBackground(const Common::Rect& r, byte *data);
// low level surfaces
void clearScreen(Gfx::Buffers buffer);
void copyScreen(Gfx::Buffers srcbuffer, Gfx::Buffers dstbuffer);
void copyRect(Gfx::Buffers dstbuffer, const Common::Rect& r, byte *src, uint16 pitch);
void grabRect(byte *dst, const Common::Rect& r, Gfx::Buffers srcbuffer, uint16 pitch);
void floodFill(Gfx::Buffers buffer, const Common::Rect& r, byte color);
// palette
void setPalette(Palette palette);
void setBlackPalette();
void animatePalette();
// amiga specific
void setHalfbriteMode(bool enable);
// misc
int16 queryMask(int16 v);
void setFont(Font* font);
void swapBuffers();
void updateScreen();
void setBackground(Graphics::Surface *surf);
void setMask(MaskBuffer *buffer);
// init
Gfx(Parallaction* vm);
virtual ~Gfx();
public:
Common::Point _labelPosition[2];
uint16 _bgLayers[4];
PaletteFxRange _palettefx[6];
Palette _palette;
int _backgroundWidth;
int _backgroundHeight;
uint _screenX; // scrolling position
uint _screenY;
protected:
Parallaction* _vm;
Graphics::Surface *_buffers[NUM_BUFFERS];
MaskBuffer *_depthMask;
Font *_font;
bool _halfbrite;
protected:
void initBuffers(int w, int h);
void freeBuffers();
void copyRect(uint width, uint height, byte *dst, uint dstPitch, byte *src, uint srcPitch);
void flatBlit(const Common::Rect& r, byte *data, Gfx::Buffers buffer, byte transparentColor);
void blit(const Common::Rect& r, uint16 z, byte *data, Gfx::Buffers buffer);
void screenClip(Common::Rect& r, Common::Point& p);
};
} // Parallaction
#endif
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