зеркало из https://github.com/mozilla/gecko-dev.git
68 строки
1.9 KiB
C++
68 строки
1.9 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_CanvasGradient_h
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#define mozilla_dom_CanvasGradient_h
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#include "mozilla/Attributes.h"
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#include "nsTArray.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/dom/CanvasRenderingContext2DBinding.h"
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#include "mozilla/dom/CanvasRenderingContext2D.h"
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#include "mozilla/gfx/2D.h"
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#include "nsWrapperCache.h"
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#include "gfxGradientCache.h"
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namespace mozilla {
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namespace dom {
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class CanvasGradient : public nsWrapperCache {
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public:
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NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CanvasGradient)
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(CanvasGradient)
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enum class Type : uint8_t { LINEAR = 0, RADIAL };
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Type GetType() { return mType; }
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mozilla::gfx::GradientStops* GetGradientStopsForTarget(
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mozilla::gfx::DrawTarget* aRT) {
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if (mStops && mStops->GetBackendType() == aRT->GetBackendType()) {
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return mStops;
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}
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mStops = gfx::gfxGradientCache::GetOrCreateGradientStops(
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aRT, mRawStops, gfx::ExtendMode::CLAMP);
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return mStops;
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}
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// WebIDL
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void AddColorStop(float offset, const nsAString& colorstr, ErrorResult& rv);
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JSObject* WrapObject(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) override {
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return CanvasGradient_Binding::Wrap(aCx, this, aGivenProto);
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}
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CanvasRenderingContext2D* GetParentObject() { return mContext; }
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protected:
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friend struct CanvasBidiProcessor;
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CanvasGradient(CanvasRenderingContext2D* aContext, Type aType)
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: mContext(aContext), mType(aType) {}
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RefPtr<CanvasRenderingContext2D> mContext;
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nsTArray<mozilla::gfx::GradientStop> mRawStops;
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RefPtr<mozilla::gfx::GradientStops> mStops;
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Type mType;
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virtual ~CanvasGradient() {}
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_CanvasGradient_h
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