screen_lok.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 KYRA_SCREEN_LOK_H
#define KYRA_SCREEN_LOK_H

#include "kyra/graphics/screen.h"

namespace Kyra {

class KyraEngine_LoK;

class Screen_LoK : public Screen {
public:
    Screen_LoK(KyraEngine_LoK *vm, OSystem *system);
    ~Screen_LoK() override;

    bool init() override;

    void loadBitmap(const char *filename, int tempPage, int dstPage, Palette *pal, bool skip = false) override;

    int getRectSize(int w, int h) override;

    void setTextColorMap(const uint8 *cmap) override;

    void fadeSpecialPalette(int palIndex, int startIndex, int size, int fadeTime);

    void savePageToDisk(const char *file, int page);
    void loadPageFromDisk(const char *file, int page);
    void queryPageFromDisk(const char *file, int page, uint8 *buffer);
    void deletePageFromDisk(int page);

    void copyBackgroundBlock(int x, int page, int flag);
    void copyBackgroundBlock2(int x);

    void addBitBlitRect(int x, int y, int w, int h);
    void bitBlitRects();

    // AMIGA specific
    void setInterfacePalette(const Palette &pal, uint8 r, uint8 g, uint8 b);
    void postProcessCursor(uint8 *data, int width, int height, int pitch) override;

protected:
    enum {
        kNumBitBlitRects = 10
    };

    KyraEngine_LoK *_vm;

    static const ScreenDim _screenDimTable[];
    static const int _screenDimTableCount;

    Common::Rect _bitBlitRects[kNumBitBlitRects];
    int _bitBlitNum;
    uint8 *_unkPtr1, *_unkPtr2;

    uint8 *_saveLoadPage[8];
    uint8 *_saveLoadPageOvl[8];
};

class Screen_LoK_16 : public Screen_LoK {
public:
    Screen_LoK_16(KyraEngine_LoK *vm, OSystem *system);

    void setScreenPalette(const Palette &pal) override;

    void fadePalette(const Palette &pal, int delay, const UpdateFunctor *upFunc = 0) override;
    void getFadeParams(const Palette &pal, int delay, int &delayInc, int &diff) override;
    int fadePalStep(const Palette &pal, int diff) override;
private:
    void updateDirtyRectsOvl();

    void convertTo16Colors(uint8 *page, int w, int h, int pitch, int keyColor = -1);
    void postProcessCursor(uint8 *data, int width, int height, int pitch) override {
        convertTo16Colors(data, width, height, pitch, _cursorColorKey);
    }
    void mergeOverlay(int x, int y, int w, int h) override;

    void set16ColorPalette(const uint8 *pal);

    void paletteMap(uint8 idx, int r, int g, int b);

    struct PaletteDither {
        uint8 bestMatch;
        uint8 invertMatch;
    };

    PaletteDither _paletteDither[256];

    static const uint8 _palette16[48];
};

} // End of namespace Kyra

#endif