summaryrefslogtreecommitdiffstats
path: root/dom/canvas/CanvasGradient.h
diff options
context:
space:
mode:
Diffstat (limited to 'dom/canvas/CanvasGradient.h')
-rw-r--r--dom/canvas/CanvasGradient.h83
1 files changed, 83 insertions, 0 deletions
diff --git a/dom/canvas/CanvasGradient.h b/dom/canvas/CanvasGradient.h
new file mode 100644
index 000000000..5a98ab13e
--- /dev/null
+++ b/dom/canvas/CanvasGradient.h
@@ -0,0 +1,83 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_CanvasGradient_h
+#define mozilla_dom_CanvasGradient_h
+
+#include "mozilla/Attributes.h"
+#include "nsTArray.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/CanvasRenderingContext2DBinding.h"
+#include "mozilla/dom/CanvasRenderingContext2D.h"
+#include "mozilla/gfx/2D.h"
+#include "nsWrapperCache.h"
+#include "gfxGradientCache.h"
+
+namespace mozilla {
+namespace dom {
+
+class CanvasGradient : public nsWrapperCache
+{
+public:
+ NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CanvasGradient)
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(CanvasGradient)
+
+ enum class Type : uint8_t {
+ LINEAR = 0,
+ RADIAL
+ };
+
+ Type GetType()
+ {
+ return mType;
+ }
+
+ mozilla::gfx::GradientStops *
+ GetGradientStopsForTarget(mozilla::gfx::DrawTarget *aRT)
+ {
+ if (mStops && mStops->GetBackendType() == aRT->GetBackendType()) {
+ return mStops;
+ }
+
+ mStops =
+ gfx::gfxGradientCache::GetOrCreateGradientStops(aRT,
+ mRawStops,
+ gfx::ExtendMode::CLAMP);
+
+ return mStops;
+ }
+
+ // WebIDL
+ void AddColorStop(float offset, const nsAString& colorstr, ErrorResult& rv);
+
+ JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override
+ {
+ return CanvasGradientBinding::Wrap(aCx, this, aGivenProto);
+ }
+
+ CanvasRenderingContext2D* GetParentObject()
+ {
+ return mContext;
+ }
+
+protected:
+ friend struct CanvasBidiProcessor;
+
+ CanvasGradient(CanvasRenderingContext2D* aContext, Type aType)
+ : mContext(aContext)
+ , mType(aType)
+ {
+ }
+
+ RefPtr<CanvasRenderingContext2D> mContext;
+ nsTArray<mozilla::gfx::GradientStop> mRawStops;
+ RefPtr<mozilla::gfx::GradientStops> mStops;
+ Type mType;
+ virtual ~CanvasGradient() {}
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_CanvasGradient_h