gecko/content/canvas/src/CanvasGradient.h

86 lines
2.1 KiB
C++

/* 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"
#define NS_CANVASGRADIENTAZURE_PRIVATE_IID \
{0x28425a6a, 0x90e0, 0x4d42, {0x9c, 0x75, 0xff, 0x60, 0x09, 0xb3, 0x10, 0xa8}}
namespace mozilla {
namespace dom {
class CanvasGradient : public nsISupports,
public nsWrapperCache
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_CANVASGRADIENTAZURE_PRIVATE_IID)
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(CanvasGradient)
enum Type
{
LINEAR = 0,
RADIAL
};
Type GetType()
{
return mType;
}
mozilla::gfx::GradientStops *
GetGradientStopsForTarget(mozilla::gfx::DrawTarget *aRT)
{
if (mStops && mStops->GetBackendType() == aRT->GetType()) {
return mStops;
}
mStops = aRT->CreateGradientStops(mRawStops.Elements(), mRawStops.Length());
return mStops;
}
// WebIDL
void AddColorStop(float offset, const nsAString& colorstr, ErrorResult& rv);
JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aScope) MOZ_OVERRIDE
{
return CanvasGradientBinding::Wrap(aCx, aScope, this);
}
CanvasRenderingContext2D* GetParentObject()
{
return mContext;
}
protected:
CanvasGradient(CanvasRenderingContext2D* aContext, Type aType)
: mContext(aContext)
, mType(aType)
{
SetIsDOMBinding();
}
nsRefPtr<CanvasRenderingContext2D> mContext;
nsTArray<mozilla::gfx::GradientStop> mRawStops;
mozilla::RefPtr<mozilla::gfx::GradientStops> mStops;
Type mType;
virtual ~CanvasGradient() {}
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_CanvasGradient_h