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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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