palette_manager.h

/* 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef ULTIMA8_GFX_PALETTEMANAGER_H
#define ULTIMA8_GFX_PALETTEMANAGER_H

#include "common/array.h"
#include "graphics/pixelformat.h"
#include "ultima/ultima8/gfx/pal_transforms.h"

namespace Common {
class WriteStream;
class ReadStream;
}

namespace Ultima {
namespace Ultima8 {

class Palette;

class PaletteManager {
public:
    explicit PaletteManager(const Graphics::PixelFormat &format);
    ~PaletteManager();

    static PaletteManager *get_instance() {
        return _paletteManager;
    }

    enum PalIndex {
        Pal_Game = 0,
        Pal_Movie = 1,
        Pal_Diff = 2,   // Crusaders only - difficulty screen??
        Pal_Misc = 3,   // Crusaders only - game menu
        Pal_Misc2 = 4,  // Crusaders only - ??
        Pal_Star = 5,   // Crusaders only - ??
        Pal_Cred = 6,   // Crusader: No regret only (but mentioned in the no remorse exe!)
        Pal_JPFontStart = 16
    };

    void load(PalIndex index, Common::ReadStream &rs, Common::ReadStream &xformrs);
    void load(PalIndex index, Common::ReadStream &rs);
    Palette *getPalette(PalIndex index);
    uint getNumPalettes() const { return _palettes.size(); }

    void duplicate(PalIndex src, PalIndex dest);

    void updatedPalette(PalIndex index, int maxindex = 0);

    void transformPalette(PalIndex index, const int16 matrix[12]);

    void untransformPalette(PalIndex index);

    bool getTransformMatrix(int16 matrix[12], PalIndex index);

    // Get a TransformMatrix from a PalTransforms value (-4.11 fixed)
    static void getTransformMatrix(int16 matrix[12],
                                   PalTransforms trans);

    // Create a custom Transform Matrix from RGBA col32. (-4.11 fixed)
    // Alpha will set how much of original palette to keep. 0 = keep none
    static void getTransformMatrix(int16 matrix[12], uint32 col32);

    void PixelFormatChanged(const Graphics::PixelFormat &format);

    void reset();

    void resetTransforms();
    bool loadTransforms(Common::ReadStream &rs);
    void saveTransforms(Common::WriteStream &ws);

private:
    Common::Array<Palette *> _palettes;
    Graphics::PixelFormat _format;

    static PaletteManager *_paletteManager;
};

} // End of namespace Ultima8
} // End of namespace Ultima

#endif