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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "config.h" | |
6 #if ENABLE(SVG_FONTS) | |
7 #include "core/svg/SVGRemoteFontFaceSource.h" | |
8 | |
9 #include "core/SVGNames.h" | |
10 #include "core/css/FontLoader.h" | |
11 #include "core/dom/ElementTraversal.h" | |
12 #include "core/svg/SVGFontData.h" | |
13 #include "core/svg/SVGFontElement.h" | |
14 #include "core/svg/SVGFontFaceElement.h" | |
15 #include "platform/fonts/FontDescription.h" | |
16 #include "platform/fonts/SimpleFontData.h" | |
17 | |
18 namespace blink { | |
19 | |
20 SVGRemoteFontFaceSource::SVGRemoteFontFaceSource(const String& uri, FontResource
* font, PassRefPtrWillBeRawPtr<FontLoader> fontLoader) | |
21 : RemoteFontFaceSource(font, fontLoader) | |
22 , m_uri(uri) | |
23 { | |
24 } | |
25 | |
26 SVGRemoteFontFaceSource::~SVGRemoteFontFaceSource() | |
27 { | |
28 } | |
29 | |
30 bool SVGRemoteFontFaceSource::ensureFontData() | |
31 { | |
32 return resource()->ensureSVGFontData(); | |
33 } | |
34 | |
35 PassRefPtr<SimpleFontData> SVGRemoteFontFaceSource::createFontData(const FontDes
cription& fontDescription) | |
36 { | |
37 if (!isLoaded()) | |
38 return createLoadingFallbackFontData(fontDescription); | |
39 | |
40 // Parse the external SVG document, and extract the <font> element. | |
41 if (!resource()->ensureSVGFontData()) | |
42 return nullptr; | |
43 | |
44 if (!m_externalSVGFontElement) { | |
45 String fragmentIdentifier; | |
46 size_t start = m_uri.find('#'); | |
47 if (start != kNotFound) | |
48 fragmentIdentifier = m_uri.substring(start + 1); | |
49 m_externalSVGFontElement = resource()->getSVGFontById(fragmentIdentifier
); | |
50 } | |
51 | |
52 if (!m_externalSVGFontElement) | |
53 return nullptr; | |
54 | |
55 // Select first <font-face> child | |
56 if (SVGFontFaceElement* fontFaceElement = Traversal<SVGFontFaceElement>::fir
stChild(*m_externalSVGFontElement)) { | |
57 return SimpleFontData::create( | |
58 SVGFontData::create(fontFaceElement), | |
59 fontDescription.effectiveFontSize(), | |
60 fontDescription.isSyntheticBold(), | |
61 fontDescription.isSyntheticItalic()); | |
62 } | |
63 return nullptr; | |
64 } | |
65 | |
66 void SVGRemoteFontFaceSource::trace(Visitor* visitor) | |
67 { | |
68 visitor->trace(m_externalSVGFontElement); | |
69 RemoteFontFaceSource::trace(visitor); | |
70 } | |
71 | |
72 } // namespace blink | |
73 | |
74 #endif // ENABLE(SVG_FONTS) | |
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