glyphpagetreenodecgwin.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
 *
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 * are met:
 *
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 *     notice, this list of conditions and the following disclaimer. 
 * 2.  Redistributions in binary form must reproduce the above copyright
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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#include "config.h"
#include "GlyphPageTreeNode.h"

#include "SimpleFontData.h"
#include <WebKitSystemInterface/WebKitSystemInterface.h>

namespace WebCore {

bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
{
    // bufferLength will be greater than the requested number of glyphs if the buffer contains surrogate pairs.
    // We won't support this for now.
    if (bufferLength > length)
        return false;

    bool haveGlyphs = false;
    CGGlyph localGlyphBuffer[GlyphPage::size];
    wkGetGlyphs(fontData->platformData().cgFont(), buffer, localGlyphBuffer, bufferLength);
    for (unsigned i = 0; i < length; i++) {
        Glyph glyph = localGlyphBuffer[i];
        if (!glyph)
            setGlyphDataForIndex(offset + i, 0, 0);
        else {
            setGlyphDataForIndex(offset + i, glyph, fontData);
            haveGlyphs = true;
        }
    }
    return haveGlyphs;
}

}