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/*
* Copyright (C) 2006, 2007, 2008 Apple 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 "SimpleFontData.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;
HDC dc = GetDC((HWND)0);
SaveDC(dc);
SelectObject(dc, fontData->platformData().hfont());
TEXTMETRIC tm;
GetTextMetrics(dc, &tm);
WORD localGlyphBuffer[GlyphPage::size * 2];
DWORD result = GetGlyphIndices(dc, buffer, bufferLength, localGlyphBuffer, 0);
bool success = result != GDI_ERROR && static_cast<unsigned>(result) == bufferLength;
if (success) {
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;
}
}
}
RestoreDC(dc, -1);
ReleaseDC(0, dc);
return haveGlyphs;
}
}
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