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