/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef WebFontImpl_h
#define WebFontImpl_h

#include "Font.h"
#include "WebFont.h"

namespace WebCore { class FontDescription; }

namespace WebKit {

class WebFontImpl : public WebFont {
public:
    WebFontImpl(const WebCore::FontDescription&, short letterSpacing, short wordSpacing);

    virtual WebFontDescription fontDescription() const;

    virtual int ascent() const;
    virtual int descent() const;
    virtual int height() const;
    virtual int lineSpacing() const;
    virtual float xHeight() const;

    virtual void drawText(WebCanvas*, const WebTextRun&, const WebFloatPoint& leftBaseline, WebColor,
                          const WebRect& clip, bool canvasIsOpaque, int from = 0, int to = -1) const;
    virtual int calculateWidth(const WebTextRun&) const;
    virtual int offsetForPosition(const WebTextRun&, float position) const;
    virtual WebFloatRect selectionRectForText(const WebTextRun&, const WebFloatPoint& leftBaseline,
                                              int height, int from = 0, int to = -1) const;

private:
    // Estimates the bounding box of the given text.
    WebRect estimateTextBounds(const WebTextRun&, const WebFloatPoint& leftBaseline) const;

    WebCore::Font m_font;
};

} // namespace WebKit

#endif