scummvm/scumm/charset.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001-2004 The ScummVM project
 *
 * 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 2
 * 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 */

#ifndef CHARSET_H
#define CHARSET_H

#include "common/rect.h"
#include "common/scummsys.h"

namespace Scumm {

class ScummEngine;
class NutRenderer;
struct VirtScreen;

class CharsetRenderer {
public:
	
	/**
	 * Charset mask - rectangle covering the parts of the screen which are 
	 * currently (partially) masked.
	 */
	Common::Rect _mask;

	Common::Rect _str;
	int _nextLeft, _nextTop;

	int _top;
	int _left, _startLeft;
	int _right;

protected:
	byte _color;
	byte _shadowColor;
	bool _dropShadow;

public:
	bool _center;
	bool _hasMask;
	bool _ignoreCharsetMask;
	bool _blitAlso;
	bool _firstChar;
	bool _disableOffsX;

protected:
	ScummEngine *_vm;
	byte _curId;

	virtual int getCharWidth(byte chr) = 0;

public:
	CharsetRenderer(ScummEngine *vm);
	virtual ~CharsetRenderer() {}

	void restoreCharsetBg();
	void clearCharsetMask();
	bool hasCharsetMask(int left, int top, int right, int bottom);

	virtual void printChar(int chr) = 0;

	int getStringWidth(int a, const byte *str);
	void addLinebreaks(int a, byte *str, int pos, int maxwidth);
	
	virtual void setCurID(byte id) = 0;
	int getCurID() { return _curId; }
	
	virtual int getFontHeight() = 0;
	
	virtual void setColor(byte color) { _color = color; }
};

class CharsetRendererCommon : public CharsetRenderer {
protected:
	byte *_fontPtr;

	void drawBits1(VirtScreen *vs, byte *dst, const byte *src, byte *mask, int drawTop, int width, int height);

public:
	CharsetRendererCommon(ScummEngine *vm) : CharsetRenderer(vm) {}

	void setCurID(byte id);
	
	int getFontHeight() { return _fontPtr[1]; }
};

class CharsetRendererClassic : public CharsetRendererCommon {
protected:
	int getCharWidth(byte chr);

	void drawBitsN(VirtScreen *vs, byte *dst, const byte *src, byte *mask, byte bpp, int drawTop, int width, int height);

public:
	CharsetRendererClassic(ScummEngine *vm) : CharsetRendererCommon(vm) {}
	
	void printChar(int chr);
};

class CharsetRendererV3 : public CharsetRendererCommon {
protected:
	int _nbChars;
	byte *_widthTable;

	int getCharWidth(byte chr);

public:
	CharsetRendererV3(ScummEngine *vm) : CharsetRendererCommon(vm) {}
	
	void printChar(int chr);
	void setCurID(byte id);
	void setColor(byte color);
	int getFontHeight() { return 8; }
};

class CharsetRendererV2 : public CharsetRendererV3 {
protected:
	int getCharWidth(byte chr) { return 8; }

public:
	CharsetRendererV2(ScummEngine *vm, Common::Language language);
	
	void setCurID(byte id) {}
};

class CharsetRendererNut : public CharsetRenderer {
protected:
	int getCharWidth(byte chr);

	NutRenderer *_fr[5];
	NutRenderer *_current;

public:
	CharsetRendererNut(ScummEngine *vm);
	~CharsetRendererNut();
	
	void printChar(int chr);

	void setCurID(byte id);
	
	int getFontHeight();
};

} // End of namespace Scumm


#endif