content/canvas/src/CanvasGradient.h

branch
TOR_BUG_9701
changeset 11
deefc01c0e14
equal deleted inserted replaced
-1:000000000000 0:a699a6c83464
1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
3 * You can obtain one at http://mozilla.org/MPL/2.0/. */
4
5 #ifndef mozilla_dom_CanvasGradient_h
6 #define mozilla_dom_CanvasGradient_h
7
8 #include "mozilla/Attributes.h"
9 #include "nsTArray.h"
10 #include "mozilla/RefPtr.h"
11 #include "mozilla/dom/CanvasRenderingContext2DBinding.h"
12 #include "mozilla/dom/CanvasRenderingContext2D.h"
13 #include "mozilla/gfx/2D.h"
14 #include "nsWrapperCache.h"
15 #include "gfxGradientCache.h"
16
17 namespace mozilla {
18 namespace dom {
19
20 class CanvasGradient : public nsWrapperCache
21 {
22 public:
23 NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(CanvasGradient)
24 NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(CanvasGradient)
25
26 MOZ_BEGIN_NESTED_ENUM_CLASS(Type, uint8_t)
27 LINEAR = 0,
28 RADIAL
29 MOZ_END_NESTED_ENUM_CLASS(Type)
30
31 Type GetType()
32 {
33 return mType;
34 }
35
36 mozilla::gfx::GradientStops *
37 GetGradientStopsForTarget(mozilla::gfx::DrawTarget *aRT)
38 {
39 if (mStops && mStops->GetBackendType() == aRT->GetType()) {
40 return mStops;
41 }
42
43 mStops =
44 gfx::gfxGradientCache::GetOrCreateGradientStops(aRT,
45 mRawStops,
46 gfx::ExtendMode::CLAMP);
47
48 return mStops;
49 }
50
51 // WebIDL
52 void AddColorStop(float offset, const nsAString& colorstr, ErrorResult& rv);
53
54 JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE
55 {
56 return CanvasGradientBinding::Wrap(aCx, this);
57 }
58
59 CanvasRenderingContext2D* GetParentObject()
60 {
61 return mContext;
62 }
63
64 protected:
65 CanvasGradient(CanvasRenderingContext2D* aContext, mozilla::css::Loader *aLoader, Type aType)
66 : mContext(aContext)
67 , mCSSLoader(aLoader)
68 , mType(aType)
69 {
70 SetIsDOMBinding();
71 }
72
73 nsRefPtr<CanvasRenderingContext2D> mContext;
74 nsTArray<mozilla::gfx::GradientStop> mRawStops;
75 mozilla::RefPtr<mozilla::gfx::GradientStops> mStops;
76 mozilla::css::Loader* mCSSLoader; // not ref counted, it owns us
77 Type mType;
78 virtual ~CanvasGradient() {}
79 };
80
81 MOZ_FINISH_NESTED_ENUM_CLASS(CanvasGradient::Type)
82
83 } // namespace dom
84 } // namespace mozilla
85
86 #endif // mozilla_dom_CanvasGradient_h

mercurial