ttffont.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_TTFFONT_H
#define GRAPHICS_AURORA_TTFFONT_H

#include <vector>
#include <map>

#include "src/common/types.h"
#include "src/common/scopedptr.h"
#include "src/common/ptrvector.h"

#include "src/graphics/font.h"

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

namespace Common {
    class UString;
}

namespace Graphics {

class Surface;
class TTFRenderer;

namespace Aurora {

class TTFFont : public Graphics::Font {
public:
    TTFFont(Common::SeekableReadStream *ttf, int height);
    TTFFont(const Common::UString &name, int height);
    ~TTFFont();

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

    void draw(uint32 c) const;

    void buildChars(const Common::UString &str);

private:
    struct Page {
        Surface *surface;
        TextureHandle texture;

        bool needRebuild;

        uint32 curX;
        uint32 curY;

        uint32 heightLeft;
        uint32 widthLeft;

        Page();

        void rebuild();
    };

    struct Char {
        float width;

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

        size_t page;
    };


    Common::ScopedPtr<TTFRenderer> _ttf;

    Common::PtrVector<Page> _pages;
    std::map<uint32, Char> _chars;

    std::map<uint32, Char>::const_iterator _missingChar;
    float _missingWidth;

    uint32 _height;

    void load(Common::SeekableReadStream *ttf, int height);

    void rebuildPages();
    void addChar(uint32 c);
    void drawMissing() const;
};

} // End of namespace Aurora

} // End of namespace Graphics

#endif // GRAPHICS_AURORA_TTFFONT_H