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125 lines
3.0 KiB
C++
125 lines
3.0 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef SCI_GFX_PALETTE_H
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#define SCI_GFX_PALETTE_H
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#include "common/scummsys.h"
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#include "common/str.h"
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namespace Sci {
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class PaletteEntry {
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friend class Palette;
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enum {
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LOCKED = -42,
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FREE = -41
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};
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public:
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PaletteEntry()
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: r(0), g(0), b(0), _parentIndex(-1), refcount(FREE)
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{ }
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PaletteEntry(byte R, byte G, byte B)
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: r(R), g(G), b(B), _parentIndex(-1), refcount(FREE)
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{ }
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/** @name Color data */
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/** @{ */
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byte r, g, b;
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/** @} */
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inline int getParentIndex() const { return _parentIndex; }
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/** Index in parent palette, or -1 */
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int _parentIndex;
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protected:
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/**
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* Number of references from child palettes. (This includes palettes
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* of pixmaps.)
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* Special values: PALENTRY_LOCKED, PALENTRY_FREE */
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int refcount;
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};
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class Palette {
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public:
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explicit Palette(uint size);
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Palette(const PaletteEntry *colors, uint size);
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~Palette();
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Palette *getref();
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void free();
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Palette *copy();
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void resize(uint size);
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void setColor(uint index, byte r, byte g, byte b, int parentIndex = -1);
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void makeSystemColor(uint index, const PaletteEntry &color);
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const PaletteEntry &getColor(uint index) const {
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assert(index < _size);
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return _colors[index];
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}
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const PaletteEntry &operator[](uint index) const {
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return getColor(index);
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}
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uint size() const { return _size; }
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bool isDirty() const { return _dirty; }
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bool isShared() const { return _refcount > 1; }
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Palette *getParent() { return _parent; }
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int getRevision() const { return _revision; }
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void markClean() { _dirty = false; }
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uint findNearbyColor(byte r, byte g, byte b, bool lock=false);
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bool mergeInto(Palette *parent); // returns false if already merged
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void forceInto(Palette *parent);
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void unmerge();
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Common::String name; // strictly for debugging purposes
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private:
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PaletteEntry *_colors;
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uint _size;
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Palette *_parent;
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/** Palette has changed */
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bool _dirty;
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/** Number of pixmaps (or other objects) using this palette */
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int _refcount;
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/** When this is incremented, all child references are invalidated */
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int _revision;
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};
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} // End of namespace Sci
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#endif // SCI_GFX_PALETTE_H
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