Source/platform/fonts/skia/GlyphPageTreeNodeSkia.cpp

/*
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "config.h"
#include "platform/fonts/GlyphPageTreeNode.h"

#include "platform/fonts/SimpleFontData.h"

#include "SkPaint.h"
#include "SkTemplates.h"
#include "SkTypeface.h"
#include "SkUtils.h"

namespace WebCore {

bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
{
    if (SkUTF16_IsHighSurrogate(buffer[bufferLength-1])) {
        SkDebugf("%s last char is high-surrogate", __FUNCTION__);
        return false;
    }

    SkAutoSTMalloc<GlyphPage::size, uint16_t> glyphStorage(length);

    uint16_t* glyphs = glyphStorage.get();
    SkTypeface* typeface = fontData->platformData().typeface();
    typeface->charsToGlyphs(buffer, SkTypeface::kUTF16_Encoding, glyphs, length);

    unsigned allGlyphs = 0; // track if any of the glyphIDs are non-zero
    for (unsigned i = 0; i < length; i++) {
        setGlyphDataForIndex(offset + i, glyphs[i], glyphs[i] ? fontData : NULL);
        allGlyphs |= glyphs[i];
    }

    return allGlyphs != 0;
}

}  // namespace WebCore