graphics.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 TRECISION_GRAPHICS_H
#define TRECISION_GRAPHICS_H

#include "common/rect.h"
#include "graphics/pixelformat.h"
#include "graphics/surface.h"

namespace Common {
class SeekableReadStream;
}


namespace Trecision {
class TrecisionEngine;

struct Font {
    int8 *_data;
    uint16 _width;
};

class GraphicsManager {
    TrecisionEngine *_vm;

    Graphics::Surface _screenBuffer;
    Graphics::Surface _background;
    Graphics::Surface _smkBackground;
    Graphics::Surface _leftInventoryArrow;
    Graphics::Surface _rightInventoryArrow;
    Graphics::Surface _inventoryIcons;
    Graphics::Surface _saveSlotThumbnails;
    Graphics::Surface _textureMat;

    Graphics::PixelFormat _screenFormat;
    uint16 _bitMask[3];
    Font _fonts[256];

    Common::List<Common::Rect> _dirtyRects;

    const Graphics::PixelFormat _rgb555Format;

    uint16 aliasing(uint32 val1, uint32 val2, uint8 num);
    void drawCharPixel(uint16 y, uint16 charLeft, uint16 charRight, Common::Rect rect, Common::Rect subtitleRect, uint16 color, Graphics::Surface *externalSurface = nullptr);
    void initCursor();
    void copyToScreenBufferInner(const Graphics::Surface *surface, int x, int y);
    void paintObjAnm(uint16 curBox);
    void drawObj(int index, bool mask, Common::Rect drawRect, Common::Rect drawObjRect, bool includeDirtyRect = true);
    void eraseObj(Common::Rect drawObjRect);

public:
    GraphicsManager(TrecisionEngine *vm);
    ~GraphicsManager();

    bool init();
    void clearScreen();
    void copyToScreen(int x, int y, int w, int h);
    void copyToScreenBuffer(const Graphics::Surface *surface, int x, int y, const byte *palette);
    void blitToScreenBuffer(const Graphics::Surface *surface, int x, int y, const byte *palette, bool useSmkBg);
    void paintScreen(bool flag);
    void loadBackground(Common::SeekableReadStream *stream);
    void clearScreenBuffer();
    void clearScreenBufferTop();
    void clearScreenBufferInventory();
    void clearScreenBufferSaveSlotDescriptions();
    void drawLeftInventoryArrow(byte startLine);
    void drawRightInventoryArrow(byte startLine);
    void drawInventoryIcon(byte iconIndex, byte iconSlot, byte startLine);
    void drawSaveSlotThumbnail(byte iconIndex, byte iconSlot, byte startLine);
    void setSaveSlotThumbnail(byte iconSlot, const Graphics::Surface *thumbnail);
    void readSurface(Common::SeekableReadStream *stream, Graphics::Surface *surface, uint16 width, uint16 height, uint16 count = 1);
    void readTexture(Common::SeekableReadStream *stream);
    void drawTexturePixel(uint16 textureX, uint16 textureY, uint16 screenX, uint16 screenY);

    uint16 convertToScreenFormat(uint16 color) const;

    void shadow(uint16 x, uint16 y, uint8 num);
    void pixelAliasing(uint16 x, uint16 y);
    void dissolve();

    void addDirtyRect(Common::Rect rect, bool translateRect);

    uint16 getCharWidth(byte character);
    void drawChar(byte curChar, uint16 textColor, uint16 line, Common::Rect rect, Common::Rect subtitleRect, uint16 inc, Graphics::Surface *externalSurface);

    bool isCursorVisible();
    void showCursor();
    void hideCursor();

    void loadFont();
    void loadData();
    void showDemoPic();
    
};

} // End of namespace Trecision
#endif