зеркало из https://github.com/mozilla/gecko-dev.git
85 строки
2.1 KiB
C++
85 строки
2.1 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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{
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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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MOZ_BEGIN_NESTED_ENUM_CLASS(Type, uint8_t)
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LINEAR = 0,
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RADIAL
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MOZ_END_NESTED_ENUM_CLASS(Type)
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Type GetType()
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{
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return mType;
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}
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mozilla::gfx::GradientStops *
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GetGradientStopsForTarget(mozilla::gfx::DrawTarget *aRT)
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{
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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 =
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gfx::gfxGradientCache::GetOrCreateGradientStops(aRT,
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mRawStops,
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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) MOZ_OVERRIDE
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{
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return CanvasGradientBinding::Wrap(aCx, this);
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}
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CanvasRenderingContext2D* GetParentObject()
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{
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return mContext;
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}
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protected:
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CanvasGradient(CanvasRenderingContext2D* aContext, Type aType)
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: mContext(aContext)
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, mType(aType)
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{
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SetIsDOMBinding();
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}
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nsRefPtr<CanvasRenderingContext2D> mContext;
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nsTArray<mozilla::gfx::GradientStop> mRawStops;
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mozilla::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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MOZ_FINISH_NESTED_ENUM_CLASS(CanvasGradient::Type)
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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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