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 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 "HWndDC.h"
33#include "SimpleFontData.h"
34
35namespace WebCore {
36
37bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
38{
39    // bufferLength will be greater than the requested number of glyphs if the buffer contains surrogate pairs.
40    // We won't support this for now.
41    if (bufferLength > length)
42        return false;
43
44    bool haveGlyphs = false;
45
46    HWndDC dc(0);
47    SaveDC(dc);
48    SelectObject(dc, fontData->platformData().hfont());
49
50    WORD localGlyphBuffer[GlyphPage::size * 2];
51    DWORD result = GetGlyphIndices(dc, buffer, bufferLength, localGlyphBuffer, 0);
52    bool success = result != GDI_ERROR && static_cast<unsigned>(result) == bufferLength;
53    if (success) {
54        for (unsigned i = 0; i < length; i++) {
55            Glyph glyph = localGlyphBuffer[i];
56            if (!glyph)
57                setGlyphDataForIndex(offset + i, 0, 0);
58            else {
59                setGlyphDataForIndex(offset + i, glyph, fontData);
60                haveGlyphs = true;
61            }
62        }
63    }
64    RestoreDC(dc, -1);
65
66    return haveGlyphs;
67}
68
69}
70