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Unified Diff: third_party/WebKit/Source/modules/csspaint/PaintRenderingContext2D.h

Issue 1778413003: Implement PaintRenderingContext2D off BaseRenderingContext2D (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rebase Created 4 years, 9 months ago
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Index: third_party/WebKit/Source/modules/csspaint/PaintRenderingContext2D.h
diff --git a/third_party/WebKit/Source/modules/csspaint/PaintRenderingContext2D.h b/third_party/WebKit/Source/modules/csspaint/PaintRenderingContext2D.h
new file mode 100644
index 0000000000000000000000000000000000000000..2eb72712618657f4ed19928372cfec97d2192daa
--- /dev/null
+++ b/third_party/WebKit/Source/modules/csspaint/PaintRenderingContext2D.h
@@ -0,0 +1,76 @@
+// Copyright 2016 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.
+
+#ifndef PaintRenderingContext2D_h
+#define PaintRenderingContext2D_h
+
+#include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/ModulesExport.h"
+#include "modules/canvas2d/BaseRenderingContext2D.h"
+#include "third_party/skia/include/core/SkCanvas.h"
+
+namespace blink {
+
+class CanvasImageSource;
+class Color;
+class ImageBuffer;
+
+class MODULES_EXPORT PaintRenderingContext2D : public BaseRenderingContext2D, public RefCountedWillBeGarbageCollectedFinalized<PaintRenderingContext2D>, public ScriptWrappable {
+ DEFINE_WRAPPERTYPEINFO();
+ WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PaintRenderingContext2D);
+ WTF_MAKE_NONCOPYABLE(PaintRenderingContext2D);
+ USING_FAST_MALLOC_WILL_BE_REMOVED(PaintRenderingContext2D);
+public:
+ static PassRefPtrWillBeRawPtr<PaintRenderingContext2D> create(PassOwnPtr<ImageBuffer> imageBuffer)
+ {
+ return adoptRefWillBeNoop(new PaintRenderingContext2D(imageBuffer));
+ }
+
+ // BaseRenderingContext2D
+
+ // PaintRenderingContext2D doesn't have any pixel readback so the origin
+ // is always clean, and unable to taint it.
+ bool originClean() const final { return true; }
+ void setOriginTainted() final { }
+ bool wouldTaintOrigin(CanvasImageSource*) final { return false; }
+
+ int width() const final;
+ int height() const final;
+
+ bool hasImageBuffer() const final { return m_imageBuffer; }
+ ImageBuffer* imageBuffer() const final { return m_imageBuffer.get(); }
+
+ bool parseColorOrCurrentColor(Color&, const String& colorString) const final;
+
+ SkCanvas* drawingCanvas() const final;
+ SkCanvas* existingDrawingCanvas() const final;
+ void disableDeferral(DisableDeferralReason) final { }
+
+ AffineTransform baseTransform() const final;
+
+ void didDraw(const SkIRect& dirtyRect) final;
+
+ // TODO(ikilpatrick): We'll need to either only accept resolved filters
+ // from a typed-om <filter> object, or use the appropriate style resolution
+ // host to determine 'em' units etc in filters. At the moment just pretend
+ // that we don't have a filter set.
+ bool stateHasFilter() final { return false; }
+ SkImageFilter* stateGetFilter() final { return nullptr; }
+
+ void validateStateStack() final;
+
+ bool hasAlpha() const final { return true; }
+
+ // PaintRenderingContext2D cannot lose it's context.
+ bool isContextLost() const final { return false; }
+
+private:
+ explicit PaintRenderingContext2D(PassOwnPtr<ImageBuffer>);
+
+ OwnPtr<ImageBuffer> m_imageBuffer;
+};
+
+} // namespace blink
+
+#endif // PaintRenderingContext2D_h

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