| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef CSSCrossfadeValue_h |
| #define CSSCrossfadeValue_h |
| |
| #include "core/CoreExport.h" |
| #include "core/css/CSSImageGeneratorValue.h" |
| #include "core/css/CSSPrimitiveValue.h" |
| #include "core/loader/resource/ImageResourceContent.h" |
| #include "core/loader/resource/ImageResourceObserver.h" |
| #include "platform/graphics/Image.h" |
| |
| namespace blink { |
| |
| class CrossfadeSubimageObserverProxy; |
| |
| namespace cssvalue { |
| |
| class CORE_EXPORT CSSCrossfadeValue final : public CSSImageGeneratorValue { |
| friend class blink::CrossfadeSubimageObserverProxy; |
| USING_PRE_FINALIZER(CSSCrossfadeValue, Dispose); |
| |
| public: |
| static CSSCrossfadeValue* Create(CSSValue* from_value, |
| CSSValue* to_value, |
| CSSPrimitiveValue* percentage_value) { |
| return new CSSCrossfadeValue(from_value, to_value, percentage_value); |
| } |
| |
| ~CSSCrossfadeValue(); |
| |
| String CustomCSSText() const; |
| |
| scoped_refptr<Image> GetImage(const ImageResourceObserver&, |
| const Document&, |
| const ComputedStyle&, |
| const LayoutSize& container_size); |
| bool IsFixedSize() const { return true; } |
| FloatSize FixedSize(const Document&, const FloatSize&); |
| |
| bool IsPending() const; |
| bool KnownToBeOpaque(const Document&, const ComputedStyle&) const; |
| |
| void LoadSubimages(const Document&); |
| |
| bool HasFailedOrCanceledSubresources() const; |
| |
| bool Equals(const CSSCrossfadeValue&) const; |
| |
| CSSCrossfadeValue* ValueWithURLsMadeAbsolute(); |
| |
| void TraceAfterDispatch(blink::Visitor*); |
| |
| private: |
| CSSCrossfadeValue(CSSValue* from_value, |
| CSSValue* to_value, |
| CSSPrimitiveValue* percentage_value); |
| |
| void Dispose(); |
| |
| class CrossfadeSubimageObserverProxy final : public ImageResourceObserver { |
| DISALLOW_NEW(); |
| |
| public: |
| explicit CrossfadeSubimageObserverProxy(CSSCrossfadeValue* owner_value) |
| : owner_value_(owner_value), ready_(false) {} |
| |
| ~CrossfadeSubimageObserverProxy() override = default; |
| void Trace(blink::Visitor* visitor) { visitor->Trace(owner_value_); } |
| |
| void ImageChanged(ImageResourceContent*, |
| CanDeferInvalidation, |
| const IntRect* = nullptr) override; |
| bool WillRenderImage() override; |
| String DebugName() const override { |
| return "CrossfadeSubimageObserverProxy"; |
| } |
| void SetReady(bool ready) { ready_ = ready; } |
| |
| private: |
| Member<CSSCrossfadeValue> owner_value_; |
| bool ready_; |
| }; |
| |
| bool WillRenderImage() const; |
| void CrossfadeChanged(const IntRect&, |
| ImageResourceObserver::CanDeferInvalidation); |
| |
| Member<CSSValue> from_value_; |
| Member<CSSValue> to_value_; |
| Member<CSSPrimitiveValue> percentage_value_; |
| |
| Member<ImageResourceContent> cached_from_image_; |
| Member<ImageResourceContent> cached_to_image_; |
| |
| CrossfadeSubimageObserverProxy crossfade_subimage_observer_; |
| }; |
| |
| DEFINE_CSS_VALUE_TYPE_CASTS(CSSCrossfadeValue, IsCrossfadeValue()); |
| |
| } // namespace cssvalue |
| } // namespace blink |
| |
| #endif // CSSCrossfadeValue_h |