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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*/
#ifndef GRAPHICS_FONT_H
#define GRAPHICS_FONT_H
#include "common/str.h"
#include "graphics/surface.h"
namespace Common {
class SeekableReadStream;
}
namespace Graphics {
// Text alignment modes for drawString()
enum TextAlignment {
kTextAlignLeft,
kTextAlignCenter,
kTextAlignRight
};
/**
* Instances of this class represent a distinct font, with a built-in renderer.
* @todo Maybe move the high-level methods (drawString etc.) to a separate
* FontRenderer class? That way, we could have different variants... ?
*/
class Font {
public:
Font() {}
virtual ~Font() {}
virtual int getFontHeight() const = 0;
virtual int getMaxCharWidth() const = 0;
virtual int getCharWidth(byte chr) const = 0;
virtual void drawChar(Surface *dst, byte chr, int x, int y, uint32 color) const = 0;
void drawString(Surface *dst, const Common::String &str, int x, int y, int w, uint32 color, TextAlignment align = kTextAlignLeft, int deltax = 0, bool useEllipsis = true) const;
/**
* Compute and return the width the string str has when rendered using this font.
*/
int getStringWidth(const Common::String &str) const;
/**
* Take a text (which may contain newlines characters) and word wrap it so thata
* no text line is wider than maxWidth pixels. If necessary, additional line breaks
* are generated, preferably between words (i.e. were whitespaces are).
* The resulting lines are appended to the string list lines.
* It returns the maximal width of any of the new lines (i.e. a value which is less
* or equal to maxWidth).
*
* @param str the string to word wrap
* @param maxWidth the maximum width a line may have
* @param lines the string list to which the text lines from str are appended
* @return the maximal width of any of the lines added to lines
*/
int wordWrapText(const Common::String &str, int maxWidth, Common::StringList &lines) const;
};
class ScummFont : public Font {
public:
virtual int getFontHeight() const { return 8; }
virtual int getMaxCharWidth() const { return 8; };
virtual int getCharWidth(byte chr) const;
virtual void drawChar(Surface *dst, byte chr, int x, int y, uint32 color) const;
};
typedef unsigned short bitmap_t; /* bitmap image unit size*/
/* builtin C-based proportional/fixed font structure */
/* based on The Microwindows Project http://microwindows.org */
struct FontDesc {
const char * name; /* font name*/
int maxwidth; /* max width in pixels*/
int height; /* height in pixels*/
int ascent; /* ascent (baseline) height*/
int firstchar; /* first character in bitmap*/
int size; /* font size in glyphs*/
const bitmap_t* bits; /* 16-bit right-padded bitmap data*/
const unsigned long* offset; /* offsets into bitmap data*/
const unsigned char* width; /* character widths or NULL if fixed*/
int defaultchar; /* default char (not glyph index)*/
long bits_size; /* # words of bitmap_t bits*/
};
struct NewFontData;
class NewFont : public Font {
protected:
FontDesc desc;
NewFontData *font;
public:
NewFont(const FontDesc &d, NewFontData *font_ = 0) : desc(d), font(font_) {}
~NewFont();
virtual int getFontHeight() const { return desc.height; }
virtual int getMaxCharWidth() const { return desc.maxwidth; };
virtual int getCharWidth(byte chr) const;
virtual void drawChar(Surface *dst, byte chr, int x, int y, uint32 color) const;
static NewFont *loadFont(Common::SeekableReadStream &stream);
static bool cacheFontData(const NewFont &font, const Common::String &filename);
static NewFont *loadFromCache(Common::SeekableReadStream &stream);
};
#if (defined(PALMOS_ARM) || defined(PALMOS_DEBUG) || defined(__GP32__))
# define DEFINE_FONT(n) \
const NewFont *n; \
void create_##n() { \
n = new NewFont(desc); \
}
# define INIT_FONT(n) \
extern void create_##n(); \
create_##n();
#endif
} // End of namespace Graphics
#endif
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