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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 SCI_GFX_PALETTE_H
#define SCI_GFX_PALETTE_H
#include "common/scummsys.h"
#include "common/str.h"
namespace Sci {
class PaletteEntry {
friend class Palette;
enum {
LOCKED = -42,
FREE = -41
};
public:
PaletteEntry()
: r(0), g(0), b(0), _parentIndex(-1), refcount(FREE)
{ }
PaletteEntry(byte R, byte G, byte B)
: r(R), g(G), b(B), _parentIndex(-1), refcount(FREE)
{ }
/** @name Color data */
/** @{ */
byte r, g, b;
/** @} */
inline int getParentIndex() const { return _parentIndex; }
/** Index in parent palette, or -1 */
int _parentIndex;
protected:
/**
* Number of references from child palettes. (This includes palettes
* of pixmaps.)
* Special values: PALENTRY_LOCKED, PALENTRY_FREE */
int refcount;
};
class Palette {
public:
explicit Palette(uint size);
Palette(const PaletteEntry *colors, uint size);
~Palette();
Palette *getref();
void free();
Palette *copy();
void resize(uint size);
void setColor(uint index, byte r, byte g, byte b, int parentIndex = -1);
void makeSystemColor(uint index, const PaletteEntry &color);
const PaletteEntry &getColor(uint index) const {
assert(index < _size);
return _colors[index];
}
const PaletteEntry &operator[](uint index) const {
return getColor(index);
}
uint size() const { return _size; }
bool isDirty() const { return _dirty; }
bool isShared() const { return _refcount > 1; }
Palette *getParent() { return _parent; }
int getRevision() const { return _revision; }
void markClean() { _dirty = false; }
uint findNearbyColor(byte r, byte g, byte b, bool lock=false);
bool mergeInto(Palette *parent); // returns false if already merged
void forceInto(Palette *parent);
void unmerge();
Common::String name; // strictly for debugging purposes
private:
PaletteEntry *_colors;
uint _size;
Palette *_parent;
/** Palette has changed */
bool _dirty;
/** Number of pixmaps (or other objects) using this palette */
int _refcount;
/** When this is incremented, all child references are invalidated */
int _revision;
};
} // End of namespace Sci
#endif // SCI_GFX_PALETTE_H
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