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| 1 /* | |
| 2 * Copyright (C) 2012 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 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' | |
| 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS | |
| 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF | |
| 23 * THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "sky/engine/core/css/CSSImageSetValue.h" | |
| 27 | |
| 28 #include "gen/sky/core/FetchInitiatorTypeNames.h" | |
| 29 #include "sky/engine/core/css/CSSImageValue.h" | |
| 30 #include "sky/engine/core/css/CSSPrimitiveValue.h" | |
| 31 #include "sky/engine/core/dom/Document.h" | |
| 32 #include "sky/engine/core/fetch/FetchRequest.h" | |
| 33 #include "sky/engine/core/fetch/ImageResource.h" | |
| 34 #include "sky/engine/core/fetch/ResourceFetcher.h" | |
| 35 #include "sky/engine/core/rendering/style/StyleFetchedImageSet.h" | |
| 36 #include "sky/engine/core/rendering/style/StylePendingImage.h" | |
| 37 #include "sky/engine/wtf/text/StringBuilder.h" | |
| 38 | |
| 39 namespace blink { | |
| 40 | |
| 41 CSSImageSetValue::CSSImageSetValue() | |
| 42 : CSSValueList(ImageSetClass, CommaSeparator) | |
| 43 , m_accessedBestFitImage(false) | |
| 44 , m_scaleFactor(1) | |
| 45 { | |
| 46 } | |
| 47 | |
| 48 CSSImageSetValue::~CSSImageSetValue() | |
| 49 { | |
| 50 if (m_imageSet && m_imageSet->isImageResourceSet()) | |
| 51 toStyleFetchedImageSet(m_imageSet)->clearImageSetValue(); | |
| 52 } | |
| 53 | |
| 54 void CSSImageSetValue::fillImageSet() | |
| 55 { | |
| 56 size_t length = this->length(); | |
| 57 size_t i = 0; | |
| 58 while (i < length) { | |
| 59 CSSImageValue* imageValue = toCSSImageValue(item(i)); | |
| 60 String imageURL = imageValue->url(); | |
| 61 | |
| 62 ++i; | |
| 63 ASSERT_WITH_SECURITY_IMPLICATION(i < length); | |
| 64 CSSValue* scaleFactorValue = item(i); | |
| 65 float scaleFactor = toCSSPrimitiveValue(scaleFactorValue)->getFloatValue
(); | |
| 66 | |
| 67 ImageWithScale image; | |
| 68 image.imageURL = imageURL; | |
| 69 image.referrer = imageValue->referrer(); | |
| 70 image.scaleFactor = scaleFactor; | |
| 71 m_imagesInSet.append(image); | |
| 72 ++i; | |
| 73 } | |
| 74 | |
| 75 // Sort the images so that they are stored in order from lowest resolution t
o highest. | |
| 76 std::sort(m_imagesInSet.begin(), m_imagesInSet.end(), CSSImageSetValue::comp
areByScaleFactor); | |
| 77 } | |
| 78 | |
| 79 CSSImageSetValue::ImageWithScale CSSImageSetValue::bestImageForScaleFactor() | |
| 80 { | |
| 81 ImageWithScale image; | |
| 82 size_t numberOfImages = m_imagesInSet.size(); | |
| 83 for (size_t i = 0; i < numberOfImages; ++i) { | |
| 84 image = m_imagesInSet.at(i); | |
| 85 if (image.scaleFactor >= m_scaleFactor) | |
| 86 return image; | |
| 87 } | |
| 88 return image; | |
| 89 } | |
| 90 | |
| 91 StyleFetchedImageSet* CSSImageSetValue::cachedImageSet(ResourceFetcher* loader,
float deviceScaleFactor, const ResourceLoaderOptions& options) | |
| 92 { | |
| 93 ASSERT(loader); | |
| 94 | |
| 95 m_scaleFactor = deviceScaleFactor; | |
| 96 | |
| 97 if (!m_imagesInSet.size()) | |
| 98 fillImageSet(); | |
| 99 | |
| 100 if (!m_accessedBestFitImage) { | |
| 101 ImageWithScale image = bestImageForScaleFactor(); | |
| 102 if (Document* document = loader->document()) { | |
| 103 FetchRequest request(ResourceRequest(document->completeURL(image.ima
geURL)), FetchInitiatorTypeNames::css, options); | |
| 104 request.mutableResourceRequest().setHTTPReferrer(image.referrer); | |
| 105 | |
| 106 if (ResourcePtr<ImageResource> cachedImage = loader->fetchImage(requ
est)) { | |
| 107 m_imageSet = StyleFetchedImageSet::create(cachedImage.get(), ima
ge.scaleFactor, this); | |
| 108 m_accessedBestFitImage = true; | |
| 109 } | |
| 110 } | |
| 111 } | |
| 112 | |
| 113 return (m_imageSet && m_imageSet->isImageResourceSet()) ? toStyleFetchedImag
eSet(m_imageSet) : 0; | |
| 114 } | |
| 115 | |
| 116 StyleFetchedImageSet* CSSImageSetValue::cachedImageSet(ResourceFetcher* fetcher,
float deviceScaleFactor) | |
| 117 { | |
| 118 return cachedImageSet(fetcher, deviceScaleFactor, ResourceFetcher::defaultRe
sourceOptions()); | |
| 119 } | |
| 120 | |
| 121 StyleImage* CSSImageSetValue::cachedOrPendingImageSet(float deviceScaleFactor) | |
| 122 { | |
| 123 if (!m_imageSet) { | |
| 124 m_imageSet = StylePendingImage::create(this); | |
| 125 } else if (!m_imageSet->isPendingImage()) { | |
| 126 // If the deviceScaleFactor has changed, we may not have the best image
loaded, so we have to re-assess. | |
| 127 if (deviceScaleFactor != m_scaleFactor) { | |
| 128 m_accessedBestFitImage = false; | |
| 129 m_imageSet = StylePendingImage::create(this); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 return m_imageSet.get(); | |
| 134 } | |
| 135 | |
| 136 String CSSImageSetValue::customCSSText() const | |
| 137 { | |
| 138 StringBuilder result; | |
| 139 result.append("-webkit-image-set("); | |
| 140 | |
| 141 size_t length = this->length(); | |
| 142 size_t i = 0; | |
| 143 while (i < length) { | |
| 144 if (i > 0) | |
| 145 result.appendLiteral(", "); | |
| 146 | |
| 147 const CSSValue* imageValue = item(i); | |
| 148 result.append(imageValue->cssText()); | |
| 149 result.append(' '); | |
| 150 | |
| 151 ++i; | |
| 152 ASSERT_WITH_SECURITY_IMPLICATION(i < length); | |
| 153 const CSSValue* scaleFactorValue = item(i); | |
| 154 result.append(scaleFactorValue->cssText()); | |
| 155 // FIXME: Eventually the scale factor should contain it's own unit http:
//wkb.ug/100120. | |
| 156 // For now 'x' is hard-coded in the parser, so we hard-code it here too. | |
| 157 result.append('x'); | |
| 158 | |
| 159 ++i; | |
| 160 } | |
| 161 | |
| 162 result.append(')'); | |
| 163 return result.toString(); | |
| 164 } | |
| 165 | |
| 166 CSSImageSetValue::CSSImageSetValue(const CSSImageSetValue& cloneFrom) | |
| 167 : CSSValueList(cloneFrom) | |
| 168 , m_accessedBestFitImage(false) | |
| 169 , m_scaleFactor(1) | |
| 170 { | |
| 171 // Non-CSSValueList data is not accessible through CSS OM, no need to clone. | |
| 172 } | |
| 173 | |
| 174 PassRefPtr<CSSImageSetValue> CSSImageSetValue::cloneForCSSOM() const | |
| 175 { | |
| 176 return adoptRef(new CSSImageSetValue(*this)); | |
| 177 } | |
| 178 | |
| 179 } // namespace blink | |
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Chromium Code Reviews
Issue 1214633005:
Remove CSS clients of ImageResource (Closed)
Base URL: git@github.com:domokit/mojo.git@master