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Unified Diff: third_party/WebKit/Source/core/html/canvas/CanvasImageElementSource.cpp

Issue 2817093002: Revert of Adds SVGImageElement as a ImageBitmapSource (Closed)
Patch Set: Created 3 years, 8 months ago
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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

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