Index: third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.cpp |
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.cpp b/third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..64277260ccf01bbd10a827024ba24fb2de13d9bb |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.cpp |
@@ -0,0 +1,126 @@ |
+// Copyright 2017 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "core/html/canvas/CanvasImageElementSource.h" |
+ |
+#include "core/layout/LayoutObject.h" |
+#include "core/loader/ImageLoader.h" |
+#include "core/svg/graphics/SVGImageForContainer.h" |
+ |
+namespace blink { |
+ |
+ImageResourceContent* CanvasImageElementSource::CachedImage() const { |
+ return GetImageLoader().GetImage(); |
+} |
+ |
+const Element& CanvasImageElementSource::GetElement() const { |
+ return *GetImageLoader().GetElement(); |
+} |
+ |
+bool CanvasImageElementSource::IsSVGSource() const { |
+ return CachedImage() && CachedImage()->GetImage()->IsSVGImage(); |
+} |
+ |
+PassRefPtr<Image> CanvasImageElementSource::GetSourceImageForCanvas( |
+ SourceImageStatus* status, |
+ AccelerationHint, |
+ SnapshotReason, |
+ const FloatSize& default_object_size) const { |
+ if (!GetImageLoader().ImageComplete() || !CachedImage()) { |
+ *status = kIncompleteSourceImageStatus; |
+ return nullptr; |
+ } |
+ |
+ if (CachedImage()->ErrorOccurred()) { |
+ *status = kUndecodableSourceImageStatus; |
+ return nullptr; |
+ } |
+ |
+ RefPtr<Image> source_image; |
+ if (CachedImage()->GetImage()->IsSVGImage()) { |
+ UseCounter::Count(GetElement().GetDocument(), UseCounter::kSVGInCanvas2D); |
+ SVGImage* svg_image = ToSVGImage(CachedImage()->GetImage()); |
+ IntSize image_size = |
+ RoundedIntSize(svg_image->ConcreteObjectSize(default_object_size)); |
+ source_image = SVGImageForContainer::Create( |
+ svg_image, image_size, 1, |
+ GetElement().GetDocument().CompleteURL(GetElement().ImageSourceURL())); |
+ } else { |
+ source_image = CachedImage()->GetImage(); |
+ } |
+ |
+ *status = kNormalSourceImageStatus; |
+ return source_image->ImageForDefaultFrame(); |
+} |
+ |
+bool CanvasImageElementSource::WouldTaintOrigin( |
+ SecurityOrigin* destination_security_origin) const { |
+ return CachedImage() && |
+ !CachedImage()->IsAccessAllowed(destination_security_origin); |
+} |
+ |
+FloatSize CanvasImageElementSource::ElementSize( |
+ const FloatSize& default_object_size) const { |
+ ImageResourceContent* image = CachedImage(); |
+ if (!image) |
+ return FloatSize(); |
+ |
+ if (image->GetImage() && image->GetImage()->IsSVGImage()) { |
+ return ToSVGImage(CachedImage()->GetImage()) |
+ ->ConcreteObjectSize(default_object_size); |
+ } |
+ |
+ return FloatSize(image->ImageSize(LayoutObject::ShouldRespectImageOrientation( |
+ GetElement().GetLayoutObject()), |
+ 1.0f)); |
+} |
+ |
+FloatSize CanvasImageElementSource::DefaultDestinationSize( |
+ const FloatSize& default_object_size) const { |
+ ImageResourceContent* image = CachedImage(); |
+ if (!image) |
+ return FloatSize(); |
+ |
+ if (image->GetImage() && image->GetImage()->IsSVGImage()) { |
+ return ToSVGImage(CachedImage()->GetImage()) |
+ ->ConcreteObjectSize(default_object_size); |
+ } |
+ |
+ LayoutSize size; |
+ size = image->ImageSize(LayoutObject::ShouldRespectImageOrientation( |
+ GetElement().GetLayoutObject()), |
+ 1.0f); |
+ return FloatSize(size); |
+} |
+ |
+bool CanvasImageElementSource::IsAccelerated() const { |
+ return false; |
+} |
+ |
+const KURL& CanvasImageElementSource::SourceURL() const { |
+ return CachedImage()->GetResponse().Url(); |
+} |
+ |
+int CanvasImageElementSource::SourceWidth() { |
+ SourceImageStatus status; |
+ RefPtr<Image> image = GetSourceImageForCanvas(&status, kPreferNoAcceleration, |
+ kSnapshotReasonUnknown, |
+ SourceDefaultObjectSize()); |
+ return image->width(); |
+} |
+ |
+int CanvasImageElementSource::SourceHeight() { |
+ SourceImageStatus status; |
+ RefPtr<Image> image = GetSourceImageForCanvas(&status, kPreferNoAcceleration, |
+ kSnapshotReasonUnknown, |
+ SourceDefaultObjectSize()); |
+ return image->height(); |
+} |
+ |
+bool CanvasImageElementSource::IsOpaque() const { |
+ Image* image = const_cast<Element&>(GetElement()).ImageContents(); |
+ return image && image->CurrentFrameKnownToBeOpaque(); |
+} |
+ |
+} // namespace blink |