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/*
* Copyright (c) 2008, 2009 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,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "GlyphPageTreeNode.h"
#include "Font.h"
#include "SimpleFontData.h"
#include "SkTemplates.h"
#include "SkPaint.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;
}
SkPaint paint;
fontData->platformData().setupPaint(&paint);
paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
SkAutoSTMalloc <GlyphPage::size, uint16_t> glyphStorage(length);
uint16_t* glyphs = glyphStorage.get();
// textToGlyphs takes a byte count, not a glyph count so we multiply by two.
unsigned count = paint.textToGlyphs(buffer, bufferLength * 2, glyphs);
if (count != length) {
SkDebugf("%s count != length\n", __FUNCTION__);
return false;
}
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
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