nftrfont.h

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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.
 *
 * xoreos 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 xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef GRAPHICS_AURORA_NFTRFONT_H
#define GRAPHICS_AURORA_NFTRFONT_H

#include <vector>
#include <map>

#include "src/common/types.h"

#include "src/aurora/nitrofile.h"

#include "src/graphics/font.h"

#include "src/graphics/aurora/texturehandle.h"

namespace Graphics {

class Surface;

namespace Aurora {

class NFTRFont : public Graphics::Font, public ::Aurora::NitroFile {
public:
    NFTRFont(Common::SeekableReadStream *nftr, bool invertPalette = false);
    NFTRFont(const Common::UString &name, bool invertPalette = false);
    ~NFTRFont();

    float getWidth (uint32 c) const;
    float getHeight()         const;

    void draw(uint32 c) const;

private:
    struct Header {
        uint8 width;
        uint8 height;
        uint8 encoding;

        uint16 palMode;

        uint32 offsetCGLP;
        uint32 offsetCWDH;
        uint32 offsetCMAP;
    };

    struct Glyph {
        Common::SeekableReadStream *data;

        uint16 palMode;

        uint8 width;
        uint8 height;
        uint8 depth;

        uint8 advance;

        uint32 character;

        Glyph();
        ~Glyph();
    };

    struct Char {
        float width;

        float tX[4], tY[4];
        float vX[4], vY[4];
    };


    bool _invertPalette;

    Surface *_surface;
    TextureHandle _texture;

    std::map<uint32, Char> _chars;

    float _missingWidth;

    uint32 _height;


    void load(Common::SeekableSubReadStreamEndian &nftr);

    void readHeader  (Common::SeekableSubReadStreamEndian &nftr, Header &header);
    void readInfo    (Common::SeekableSubReadStreamEndian &nftr, Header &header);
    void readGlyphs  (Common::SeekableSubReadStreamEndian &nftr, Header &header, std::vector<Glyph> &glyphs);
    void readWidths  (Common::SeekableSubReadStreamEndian &nftr, Header &header, std::vector<Glyph> &glyphs);
    void readCharMaps(Common::SeekableSubReadStreamEndian &nftr, Header &header, std::vector<Glyph> &glyphs);

    void drawGlyphs(const std::vector<Glyph> &glyphs);
    void drawGlyph(const Glyph &glyph, Surface &surface, uint32 x, uint32 y);

    void drawMissing() const;

    static uint32 convertToUTF32(uint16 codePoint, uint8 encoding);
};

} // End of namespace Aurora

} // End of namespace Graphics

#endif // GRAPHICS_AURORA_NFTRFONT_H