ExternalPopupMenu.h revision 635860845790a19bf50bbc51ba8fb66a96dde068 
1/*
2 * Copyright (c) 2008, 2009 Google 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 are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "GlyphPageTreeNode.h"
33
34#include "Font.h"
35#include "SimpleFontData.h"
36
37#include "SkTemplates.h"
38#include "SkPaint.h"
39#include "SkUtils.h"
40
41namespace WebCore {
42
43bool GlyphPage::fill(unsigned offset, unsigned length, UChar* buffer, unsigned bufferLength, const SimpleFontData* fontData)
44{
45    if (SkUTF16_IsHighSurrogate(buffer[bufferLength-1])) {
46        SkDebugf("%s last char is high-surrogate", __FUNCTION__);
47        return false;
48    }
49
50    SkPaint paint;
51    fontData->platformData().setupPaint(&paint);
52    paint.setTextEncoding(SkPaint::kUTF16_TextEncoding);
53
54    SkAutoSTMalloc <GlyphPage::size, uint16_t> glyphStorage(length);
55    uint16_t* glyphs = glyphStorage.get();
56    // textToGlyphs takes a byte count, not a glyph count so we multiply by two.
57    unsigned count = paint.textToGlyphs(buffer, bufferLength * 2, glyphs);
58    if (count != length) {
59        SkDebugf("%s count != length\n", __FUNCTION__);
60        return false;
61    }
62
63    unsigned allGlyphs = 0; // track if any of the glyphIDs are non-zero
64    for (unsigned i = 0; i < length; i++) {
65        setGlyphDataForIndex(offset + i, glyphs[i], glyphs[i] ? fontData : NULL);
66        allGlyphs |= glyphs[i];
67    }
68
69    return allGlyphs != 0;
70}
71
72}  // namespace WebCore
73