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108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2002-2005 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#ifndef FONT_H
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#define FONT_H
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#include "common/str.h"
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#include "graphics/surface.h"
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namespace Graphics {
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// Text alignment modes for drawString()
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enum TextAlignment {
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kTextAlignLeft,
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kTextAlignCenter,
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kTextAlignRight
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};
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/**
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* Instances of this class represent a distinct font, with a built-in renderer.
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* @todo Maybe move the high-level methods (drawString etc.) to a separate
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* FontRenderer class? That way, we could have different variants... ?
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* @todo Add more parameters to drawString, or additional similar methods,
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* featuring abilities like
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* - rendering with wrap-around instead of inserting an ellipsis or
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* cutting them; needs a 'height' parameter
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* - rendering multi-line strings (essentially, invoke the regular
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* drawString for each line, and advance one line)
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* - combinations of the two above: honor line feeds, and also wrap
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* overlong lines
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*/
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class Font {
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public:
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virtual int getFontHeight() const = 0;
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virtual int getMaxCharWidth() const = 0;
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virtual int getCharWidth(byte chr) const = 0;
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virtual void drawChar(const Surface *dst, byte chr, int x, int y, uint32 color) const = 0;
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void drawString(const Surface *dst, const Common::String &str, int x, int y, int w, uint32 color, TextAlignment align = kTextAlignLeft, int deltax = 0, bool useEllipsis = true) const;
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int getStringWidth(const Common::String &str) const;
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};
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class ScummFont : public Font {
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public:
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virtual int getFontHeight() const { return 8; }
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virtual int getMaxCharWidth() const { return 8; };
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virtual int getCharWidth(byte chr) const;
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virtual void drawChar(const Surface *dst, byte chr, int x, int y, uint32 color) const;
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};
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typedef unsigned short bitmap_t; /* bitmap image unit size*/
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/* builtin C-based proportional/fixed font structure */
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/* based on The Microwindows Project http://microwindows.org */
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struct FontDesc {
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const char * name; /* font name*/
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int maxwidth; /* max width in pixels*/
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int height; /* height in pixels*/
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int ascent; /* ascent (baseline) height*/
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int firstchar; /* first character in bitmap*/
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int size; /* font size in glyphs*/
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const bitmap_t* bits; /* 16-bit right-padded bitmap data*/
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const unsigned long* offset; /* offsets into bitmap data*/
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const unsigned char* width; /* character widths or NULL if fixed*/
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int defaultchar; /* default char (not glyph index)*/
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long bits_size; /* # words of bitmap_t bits*/
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};
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class NewFont : public Font {
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protected:
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FontDesc desc;
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public:
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NewFont(const FontDesc &d) : desc(d) {}
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virtual int getFontHeight() const { return desc.height; }
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virtual int getMaxCharWidth() const { return desc.maxwidth; };
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virtual int getCharWidth(byte chr) const;
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virtual void drawChar(const Surface *dst, byte chr, int x, int y, uint32 color) const;
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};
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} // End of namespace Graphics
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#endif
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