• Home
  • History
  • Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Copyright (C) 2007 Apple Computer, Inc.
3  * Copyright (c) 2007, 2008, 2009, Google Inc. All rights reserved.
4  * Copyright (C) 2010 Company 100, Inc.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions are
8  * met:
9  *
10  *     * Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *     * Redistributions in binary form must reproduce the above
13  * copyright notice, this list of conditions and the following disclaimer
14  * in the documentation and/or other materials provided with the
15  * distribution.
16  *     * Neither the name of Google Inc. nor the names of its
17  * contributors may be used to endorse or promote products derived from
18  * this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #include "config.h"
34 #include "platform/fonts/FontCustomPlatformData.h"
35 
36 #include "platform/LayoutTestSupport.h"
37 #include "platform/SharedBuffer.h"
38 #include "platform/fonts/FontCache.h"
39 #include "platform/fonts/FontPlatformData.h"
40 #include "platform/fonts/opentype/OpenTypeSanitizer.h"
41 #include "third_party/skia/include/core/SkStream.h"
42 #include "third_party/skia/include/core/SkTypeface.h"
43 #include "wtf/PassOwnPtr.h"
44 
45 namespace blink {
46 
FontCustomPlatformData(PassRefPtr<SkTypeface> typeface)47 FontCustomPlatformData::FontCustomPlatformData(PassRefPtr<SkTypeface> typeface)
48     : m_typeface(typeface)
49 {
50 }
51 
~FontCustomPlatformData()52 FontCustomPlatformData::~FontCustomPlatformData()
53 {
54 }
55 
fontPlatformData(float size,bool bold,bool italic,FontOrientation orientation,FontWidthVariant)56 FontPlatformData FontCustomPlatformData::fontPlatformData(float size, bool bold, bool italic, FontOrientation orientation, FontWidthVariant)
57 {
58     ASSERT(m_typeface);
59 #if OS(WIN)
60     if (!FontCache::useDirectWrite()) {
61         // FIXME: Skia currently renders synthetic bold and italics with
62         // hinting and without linear metrics on the windows GDI backend
63         // while the DirectWrite backend does the right thing. Using
64         // CreateFromName and specifying the bold/italics style allows
65         // for proper rendering of synthetic style. Once Skia has been
66         // updated this workaround will no longer be needed.
67         // http://crbug.com/332958
68         bool syntheticBold = bold && !m_typeface->isBold();
69         bool syntheticItalic = italic && !m_typeface->isItalic();
70         if (syntheticBold || syntheticItalic) {
71             SkString name;
72             m_typeface->getFamilyName(&name);
73 
74             int style = SkTypeface::kNormal;
75             if (syntheticBold)
76                 style |= SkTypeface::kBold;
77             if (syntheticItalic)
78                 style |= SkTypeface::kItalic;
79 
80             RefPtr<SkTypeface> typeface = adoptRef(FontCache::fontCache()->fontManager()->legacyCreateTypeface(name.c_str(), static_cast<SkTypeface::Style>(style)));
81             syntheticBold = false;
82             syntheticItalic = false;
83             return FontPlatformData(typeface.release(), "", size, syntheticBold, syntheticItalic, orientation);
84         }
85     }
86 #endif
87     return FontPlatformData(m_typeface.get(), "", size, bold && !m_typeface->isBold(), italic && !m_typeface->isItalic(), orientation);
88 }
89 
create(SharedBuffer * buffer)90 PassOwnPtr<FontCustomPlatformData> FontCustomPlatformData::create(SharedBuffer* buffer)
91 {
92     ASSERT_ARG(buffer, buffer);
93 
94     OpenTypeSanitizer sanitizer(buffer);
95     RefPtr<SharedBuffer> transcodeBuffer = sanitizer.sanitize();
96     if (!transcodeBuffer)
97         return nullptr; // validation failed.
98     buffer = transcodeBuffer.get();
99 
100     RefPtr<SkMemoryStream> stream = adoptRef(new SkMemoryStream(buffer->getAsSkData().get()));
101 #if OS(WIN)
102     RefPtr<SkTypeface> typeface = adoptRef(FontCache::fontCache()->fontManager()->createFromStream(stream.get()));
103 #else
104     RefPtr<SkTypeface> typeface = adoptRef(SkTypeface::CreateFromStream(stream.get()));
105 #endif
106     if (!typeface)
107         return nullptr;
108 
109     return adoptPtr(new FontCustomPlatformData(typeface.release()));
110 }
111 
supportsFormat(const String & format)112 bool FontCustomPlatformData::supportsFormat(const String& format)
113 {
114     return equalIgnoringCase(format, "truetype") || equalIgnoringCase(format, "opentype") || OpenTypeSanitizer::supportsFormat(format);
115 }
116 
117 } // namespace blink
118