1 /* 2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "config.h" 30 #include "GlyphPageTreeNode.h" 31 32 #include "SimpleFontData.h" 33 34 namespace WebCore { 35 36 bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData) 37 { 38 // bufferLength will be greater than the requested number of glyphs if the buffer contains surrogate pairs. 39 // We won't support this for now. 40 if (bufferLength > length) 41 return false; 42 43 bool haveGlyphs = false; 44 45 HDC dc = GetDC((HWND)0); 46 SaveDC(dc); 47 SelectObject(dc, fontData->platformData().hfont()); 48 49 TEXTMETRIC tm; 50 GetTextMetrics(dc, &tm); 51 52 WORD localGlyphBuffer[GlyphPage::size * 2]; 53 DWORD result = GetGlyphIndices(dc, buffer, bufferLength, localGlyphBuffer, 0); 54 bool success = result != GDI_ERROR && static_cast<unsigned>(result) == bufferLength; 55 if (success) { 56 for (unsigned i = 0; i < length; i++) { 57 Glyph glyph = localGlyphBuffer[i]; 58 if (!glyph) 59 setGlyphDataForIndex(offset + i, 0, 0); 60 else { 61 setGlyphDataForIndex(offset + i, glyph, fontData); 62 haveGlyphs = true; 63 } 64 } 65 } 66 RestoreDC(dc, -1); 67 ReleaseDC(0, dc); 68 69 return haveGlyphs; 70 } 71 72 } 73