nut_renderer.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/>.
 *
 */
 
#if !defined(SCUMM_NUT_RENDERER_H) && defined(ENABLE_SCUMM_7_8)
#define SCUMM_NUT_RENDERER_H
 
#include "common/file.h"
#include "graphics/surface.h"
#include "scumm/charset_v7.h"
 
namespace Scumm {
 
class ScummEngine;
 
class NutRenderer {
protected:
 
    enum {
        kDefaultTransparentColor = 0,
        kSmush44TransparentColor = 2
    };
 
    ScummEngine *_vm;
    int _numChars;
    int _fontHeight;
    int _spacing;
    byte *_decodedData;
    const int _direction;
 
    const int8 *_2byteShadowXOffsetTable;
    const int8 *_2byteShadowYOffsetTable;
    uint8 *_2byteColorTable;
    uint8 *_2byteMainColor;
    const int _2byteSteps;
 
    struct {
        uint16 width;
        uint16 height;
        int16 xoffs;   // X offset from NUT frame header (for sprite positioning)
        int16 yoffs;   // Y offset from NUT frame header (for sprite positioning)
        byte *src;
        byte transparency;
    } _chars[256];
 
    void codec1(byte *dst, const byte *src, int width, int height, int pitch);
    void codec21(byte *dst, const byte *src, int width, int height, int pitch);
 
    void loadFont(const char *filename);
 
public:
    NutRenderer(ScummEngine *vm, const char *filename = nullptr);
    virtual ~NutRenderer();
    void loadFontFromData(const byte *data, int32 dataSize);
    int getNumChars() const { return _numChars; }
 
    void drawFrame(byte *dst, int c, int x, int y, int pitch = -1);
    int draw2byte(byte *buffer, Common::Rect &clipRect, int x, int y, int pitch, int16 col, uint16 chr);
    int drawCharV7(byte *buffer, Common::Rect &clipRect, int x, int y, int pitch, int16 col, TextStyleFlags flags, byte chr, bool hardcodedColors = false, bool smushColorMode = false);
 
    int getCharWidth(byte c) const;
    int getCharHeight(byte c) const;
    int16 getCharXOffset(byte c) const { return _chars[c].xoffs; }
    int16 getCharYOffset(byte c) const { return _chars[c].yoffs; }
    const byte *getCharData(byte c);
    byte getCharTransparency(byte c) const { return _chars[c].transparency; }
    byte getBpp() const { return 8; }
 
    int getFontHeight() const { return _fontHeight; }
};
 
} // End of namespace Scumm
 
#endif