michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_CanvasGradient_h
michael@0: #define mozilla_dom_CanvasGradient_h
michael@0: 
michael@0: #include "mozilla/Attributes.h"
michael@0: #include "nsTArray.h"
michael@0: #include "mozilla/RefPtr.h"
michael@0: #include "mozilla/dom/CanvasRenderingContext2DBinding.h"
michael@0: #include "mozilla/dom/CanvasRenderingContext2D.h"
michael@0: #include "mozilla/gfx/2D.h"
michael@0: #include "nsWrapperCache.h"
michael@0: #include "gfxGradientCache.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: class CanvasGradient : public nsWrapperCache
michael@0: {
michael@0: public:
michael@0:   NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CanvasGradient)
michael@0:   NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(CanvasGradient)
michael@0: 
michael@0:   MOZ_BEGIN_NESTED_ENUM_CLASS(Type, uint8_t)
michael@0:     LINEAR = 0,
michael@0:     RADIAL
michael@0:   MOZ_END_NESTED_ENUM_CLASS(Type)
michael@0: 
michael@0:   Type GetType()
michael@0:   {
michael@0:     return mType;
michael@0:   }
michael@0: 
michael@0:   mozilla::gfx::GradientStops *
michael@0:   GetGradientStopsForTarget(mozilla::gfx::DrawTarget *aRT)
michael@0:   {
michael@0:     if (mStops && mStops->GetBackendType() == aRT->GetType()) {
michael@0:       return mStops;
michael@0:     }
michael@0: 
michael@0:     mStops =
michael@0:       gfx::gfxGradientCache::GetOrCreateGradientStops(aRT,
michael@0:                                                       mRawStops,
michael@0:                                                       gfx::ExtendMode::CLAMP);
michael@0: 
michael@0:     return mStops;
michael@0:   }
michael@0: 
michael@0:   // WebIDL
michael@0:   void AddColorStop(float offset, const nsAString& colorstr, ErrorResult& rv);
michael@0: 
michael@0:   JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE
michael@0:   {
michael@0:     return CanvasGradientBinding::Wrap(aCx, this);
michael@0:   }
michael@0: 
michael@0:   CanvasRenderingContext2D* GetParentObject()
michael@0:   {
michael@0:     return mContext;
michael@0:   }
michael@0: 
michael@0: protected:
michael@0:   CanvasGradient(CanvasRenderingContext2D* aContext, mozilla::css::Loader *aLoader, Type aType)
michael@0:     : mContext(aContext)
michael@0:     , mCSSLoader(aLoader)
michael@0:     , mType(aType)
michael@0:   {
michael@0:     SetIsDOMBinding();
michael@0:   }
michael@0: 
michael@0:   nsRefPtr<CanvasRenderingContext2D> mContext;
michael@0:   nsTArray<mozilla::gfx::GradientStop> mRawStops;
michael@0:   mozilla::RefPtr<mozilla::gfx::GradientStops> mStops;
michael@0:   mozilla::css::Loader* mCSSLoader; // not ref counted, it owns us
michael@0:   Type mType;
michael@0:   virtual ~CanvasGradient() {}
michael@0: };
michael@0: 
michael@0: MOZ_FINISH_NESTED_ENUM_CLASS(CanvasGradient::Type)
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // mozilla_dom_CanvasGradient_h