winfont.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 GRAPHICS_WINFONT_H
#define GRAPHICS_WINFONT_H

#include "common/str.h"
#include "common/path.h"
#include "graphics/font.h"

namespace Common {
class SeekableReadStream;
class WinResources;
}

namespace Graphics {

struct WinFontDirEntry {
    WinFontDirEntry() : points(0) {}
    WinFontDirEntry(const Common::String &name, uint16 p) : faceName(name), points(p) {}

    // This is really just a simple identifier to match a directory entry with
    // If need-be, we can add other things to check such as italics and strikethrough, etc.
    Common::String faceName;
    uint16 points;
};

class WinFont : public Font {
public:
    WinFont();
    ~WinFont();

    bool loadFromFON(const Common::Path &fileName, const WinFontDirEntry &dirEntry = WinFontDirEntry());
    bool loadFromFON(Common::SeekableReadStream &stream, const WinFontDirEntry &dirEntry = WinFontDirEntry());

    bool loadFromFNT(const Common::Path &fileName);

    void close();

    // Font API
    int getFontHeight() const { return _pixHeight; }    //< pixels, not points - for points, see getFontSizeInPointsAtDPI()
    int getFontAscent() const { return _ascent; }
    int getMaxCharWidth() const { return _maxWidth; }
    Common::String getName() const { return _name; }
    int getCharWidth(uint32 chr) const;
    void drawChar(Surface *dst, uint32 chr, int x, int y, uint32 color) const;
    int getStyle() const;

    int getFontSizeInPointsAtDPI(const int dpi) const;

    static WinFont *scaleFont(const WinFont *src, int newSize);
private:
    bool loadFromEXE(Common::WinResources *exe, const Common::Path &fileName, const WinFontDirEntry &dirEntry);

    uint32 getFontIndex(Common::SeekableReadStream &stream, const WinFontDirEntry &dirEntry);
    Common::String getFONFontName(Common::SeekableReadStream &stream);
    bool loadFromFNT(Common::SeekableReadStream &stream);
    char indexToCharacter(uint16 index) const;
    uint16 characterToIndex(uint32 character) const;

    uint16 _pixHeight;
    uint16 _maxWidth;
    uint16 _ascent;
    uint16 _sizeInPoints;
    uint16 _dpi;
    byte _firstChar;
    byte _lastChar;
    byte _defaultChar;
    bool _italic;
    bool _strikethrough;
    bool _underline;
    uint16 _weight;
    Common::String _name;

    enum {
        kFontStyleRegular,
        kFontStyleBold = 1,
        kFontStyleItalic = 2,
        kFontStyleUnderline = 4,
    };

    uint16 _glyphCount;
    struct GlyphEntry {
        GlyphEntry() { bitmap = 0; charWidth = 0; offset = 0; }
        ~GlyphEntry() { delete[] bitmap; }

        uint16 charWidth;
        uint32 offset;
        byte *bitmap;
    } *_glyphs;
};

} // End of namespace Graphics

#endif