/*
* Copyright (c) 2008, 2009 Google Inc. All rights reserved.
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* 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.
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* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
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* contributors may be used to endorse or promote products derived from
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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