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
fill(unsigned offset,unsigned length,UChar * buffer,unsigned bufferLength,const SimpleFontData * fontData)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