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| 1 // Copyright 2017 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 "core/html/canvas/CanvasImageElementSource.h" | |
| 6 | |
| 7 #include "core/layout/LayoutObject.h" | |
| 8 #include "core/loader/ImageLoader.h" | |
| 9 #include "core/svg/graphics/SVGImageForContainer.h" | |
| 10 | |
| 11 namespace blink { | |
| 12 | |
| 13 ImageResourceContent* CanvasImageElementSource::CachedImage() const { | |
| 14 return GetImageLoader().GetImage(); | |
| 15 } | |
| 16 | |
| 17 const Element& CanvasImageElementSource::GetElement() const { | |
| 18 return *GetImageLoader().GetElement(); | |
| 19 } | |
| 20 | |
| 21 bool CanvasImageElementSource::IsSVGSource() const { | |
| 22 return CachedImage() && CachedImage()->GetImage()->IsSVGImage(); | |
| 23 } | |
| 24 | |
| 25 PassRefPtr<Image> CanvasImageElementSource::GetSourceImageForCanvas( | |
| 26 SourceImageStatus* status, | |
| 27 AccelerationHint, | |
| 28 SnapshotReason, | |
| 29 const FloatSize& default_object_size) const { | |
| 30 if (!GetImageLoader().ImageComplete() || !CachedImage()) { | |
| 31 *status = kIncompleteSourceImageStatus; | |
| 32 return nullptr; | |
| 33 } | |
| 34 | |
| 35 if (CachedImage()->ErrorOccurred()) { | |
| 36 *status = kUndecodableSourceImageStatus; | |
| 37 return nullptr; | |
| 38 } | |
| 39 | |
| 40 RefPtr<Image> source_image; | |
| 41 if (CachedImage()->GetImage()->IsSVGImage()) { | |
| 42 UseCounter::Count(GetElement().GetDocument(), UseCounter::kSVGInCanvas2D); | |
| 43 SVGImage* svg_image = ToSVGImage(CachedImage()->GetImage()); | |
| 44 IntSize image_size = | |
| 45 RoundedIntSize(svg_image->ConcreteObjectSize(default_object_size)); | |
| 46 source_image = SVGImageForContainer::Create( | |
| 47 svg_image, image_size, 1, | |
| 48 GetElement().GetDocument().CompleteURL(GetElement().ImageSourceURL())); | |
| 49 } else { | |
| 50 source_image = CachedImage()->GetImage(); | |
| 51 } | |
| 52 | |
| 53 *status = kNormalSourceImageStatus; | |
| 54 return source_image->ImageForDefaultFrame(); | |
| 55 } | |
| 56 | |
| 57 bool CanvasImageElementSource::WouldTaintOrigin( | |
| 58 SecurityOrigin* destination_security_origin) const { | |
| 59 return CachedImage() && | |
| 60 !CachedImage()->IsAccessAllowed(destination_security_origin); | |
| 61 } | |
| 62 | |
| 63 FloatSize CanvasImageElementSource::ElementSize( | |
| 64 const FloatSize& default_object_size) const { | |
| 65 ImageResourceContent* image = CachedImage(); | |
| 66 if (!image) | |
| 67 return FloatSize(); | |
| 68 | |
| 69 if (image->GetImage() && image->GetImage()->IsSVGImage()) { | |
| 70 return ToSVGImage(CachedImage()->GetImage()) | |
| 71 ->ConcreteObjectSize(default_object_size); | |
| 72 } | |
| 73 | |
| 74 return FloatSize(image->ImageSize(LayoutObject::ShouldRespectImageOrientation( | |
| 75 GetElement().GetLayoutObject()), | |
| 76 1.0f)); | |
| 77 } | |
| 78 | |
| 79 FloatSize CanvasImageElementSource::DefaultDestinationSize( | |
| 80 const FloatSize& default_object_size) const { | |
| 81 ImageResourceContent* image = CachedImage(); | |
| 82 if (!image) | |
| 83 return FloatSize(); | |
| 84 | |
| 85 if (image->GetImage() && image->GetImage()->IsSVGImage()) { | |
| 86 return ToSVGImage(CachedImage()->GetImage()) | |
| 87 ->ConcreteObjectSize(default_object_size); | |
| 88 } | |
| 89 | |
| 90 LayoutSize size; | |
| 91 size = image->ImageSize(LayoutObject::ShouldRespectImageOrientation( | |
| 92 GetElement().GetLayoutObject()), | |
| 93 1.0f); | |
| 94 return FloatSize(size); | |
| 95 } | |
| 96 | |
| 97 bool CanvasImageElementSource::IsAccelerated() const { | |
| 98 return false; | |
| 99 } | |
| 100 | |
| 101 const KURL& CanvasImageElementSource::SourceURL() const { | |
| 102 return CachedImage()->GetResponse().Url(); | |
| 103 } | |
| 104 | |
| 105 int CanvasImageElementSource::SourceWidth() { | |
| 106 SourceImageStatus status; | |
| 107 RefPtr<Image> image = GetSourceImageForCanvas(&status, kPreferNoAcceleration, | |
| 108 kSnapshotReasonUnknown, | |
| 109 SourceDefaultObjectSize()); | |
| 110 return image->width(); | |
| 111 } | |
| 112 | |
| 113 int CanvasImageElementSource::SourceHeight() { | |
| 114 SourceImageStatus status; | |
| 115 RefPtr<Image> image = GetSourceImageForCanvas(&status, kPreferNoAcceleration, | |
| 116 kSnapshotReasonUnknown, | |
| 117 SourceDefaultObjectSize()); | |
| 118 return image->height(); | |
| 119 } | |
| 120 | |
| 121 bool CanvasImageElementSource::IsOpaque() const { | |
| 122 Image* image = const_cast<Element&>(GetElement()).ImageContents(); | |
| 123 return image && image->CurrentFrameKnownToBeOpaque(); | |
| 124 } | |
| 125 | |
| 126 } // namespace blink | |
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Chromium Code Reviews
Issue 2802813002:
Adds SVGImageElement as a ImageBitmapSource (Closed)
