| /* |
| * 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 THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_FILTER_OPERATION_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_FILTER_OPERATION_H_ |
| |
| #include "base/macros.h" |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/style/shadow_data.h" |
| #include "third_party/blink/renderer/platform/geometry/float_rect.h" |
| #include "third_party/blink/renderer/platform/graphics/box_reflection.h" |
| #include "third_party/blink/renderer/platform/graphics/color.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/length.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| |
| namespace blink { |
| |
| class Filter; |
| class SVGResource; |
| class SVGResourceClient; |
| |
| // CSS Filters |
| |
| class CORE_EXPORT FilterOperation |
| : public GarbageCollectedFinalized<FilterOperation> { |
| |
| public: |
| enum OperationType { |
| REFERENCE, // url(#somefilter) |
| GRAYSCALE, |
| SEPIA, |
| SATURATE, |
| HUE_ROTATE, |
| INVERT, |
| OPACITY, |
| BRIGHTNESS, |
| CONTRAST, |
| BLUR, |
| DROP_SHADOW, |
| BOX_REFLECT, |
| NONE |
| }; |
| |
| static bool CanInterpolate(FilterOperation::OperationType type) { |
| switch (type) { |
| case GRAYSCALE: |
| case SEPIA: |
| case SATURATE: |
| case HUE_ROTATE: |
| case INVERT: |
| case OPACITY: |
| case BRIGHTNESS: |
| case CONTRAST: |
| case BLUR: |
| case DROP_SHADOW: |
| return true; |
| case REFERENCE: |
| case BOX_REFLECT: |
| return false; |
| case NONE: |
| break; |
| } |
| NOTREACHED(); |
| return false; |
| } |
| |
| virtual ~FilterOperation() = default; |
| virtual void Trace(blink::Visitor* visitor) {} |
| |
| static FilterOperation* Blend(const FilterOperation* from, |
| const FilterOperation* to, |
| double progress); |
| virtual bool operator==(const FilterOperation&) const = 0; |
| bool operator!=(const FilterOperation& o) const { return !(*this == o); } |
| |
| OperationType GetType() const { return type_; } |
| virtual bool IsSameType(const FilterOperation& o) const { |
| return o.GetType() == type_; |
| } |
| |
| // True if the alpha channel of any pixel can change under this operation. |
| virtual bool AffectsOpacity() const { return false; } |
| // True if the the value of one pixel can affect the value of another pixel |
| // under this operation, such as blur. |
| virtual bool MovesPixels() const { return false; } |
| |
| // Maps "forward" to determine which pixels in a destination rect are |
| // affected by pixels in the source rect. |
| // See also FilterEffect::MapRect. |
| virtual FloatRect MapRect(const FloatRect& rect) const { return rect; } |
| |
| protected: |
| FilterOperation(OperationType type) : type_(type) {} |
| |
| OperationType type_; |
| |
| private: |
| virtual FilterOperation* Blend(const FilterOperation* from, |
| double progress) const = 0; |
| DISALLOW_COPY_AND_ASSIGN(FilterOperation); |
| }; |
| |
| #define DEFINE_FILTER_OPERATION_TYPE_CASTS(thisType, operationType) \ |
| DEFINE_TYPE_CASTS(thisType, FilterOperation, op, \ |
| op->GetType() == FilterOperation::operationType, \ |
| op.GetType() == FilterOperation::operationType); |
| |
| class CORE_EXPORT ReferenceFilterOperation : public FilterOperation { |
| public: |
| static ReferenceFilterOperation* Create(const AtomicString& url, |
| SVGResource* resource) { |
| return new ReferenceFilterOperation(url, resource); |
| } |
| |
| bool AffectsOpacity() const override { return true; } |
| bool MovesPixels() const override { return true; } |
| FloatRect MapRect(const FloatRect&) const override; |
| |
| const AtomicString& Url() const { return url_; } |
| |
| Filter* GetFilter() const { return filter_.Get(); } |
| void SetFilter(Filter* filter) { filter_ = filter; } |
| |
| SVGResource* Resource() const { return resource_; } |
| |
| void AddClient(SVGResourceClient&); |
| void RemoveClient(SVGResourceClient&); |
| |
| void Trace(blink::Visitor*) override; |
| |
| private: |
| ReferenceFilterOperation(const AtomicString& url, SVGResource*); |
| |
| FilterOperation* Blend(const FilterOperation* from, |
| double progress) const override { |
| NOTREACHED(); |
| return nullptr; |
| } |
| |
| bool operator==(const FilterOperation&) const override; |
| |
| AtomicString url_; |
| Member<SVGResource> resource_; |
| Member<Filter> filter_; |
| }; |
| |
| DEFINE_FILTER_OPERATION_TYPE_CASTS(ReferenceFilterOperation, REFERENCE); |
| |
| // GRAYSCALE, SEPIA, SATURATE and HUE_ROTATE are variations on a basic color |
| // matrix effect. For HUE_ROTATE, the angle of rotation is stored in m_amount. |
| class CORE_EXPORT BasicColorMatrixFilterOperation : public FilterOperation { |
| public: |
| static BasicColorMatrixFilterOperation* Create(double amount, |
| OperationType type) { |
| return new BasicColorMatrixFilterOperation(amount, type); |
| } |
| |
| double Amount() const { return amount_; } |
| |
| private: |
| FilterOperation* Blend(const FilterOperation* from, |
| double progress) const override; |
| bool operator==(const FilterOperation& o) const override { |
| if (!IsSameType(o)) |
| return false; |
| const BasicColorMatrixFilterOperation* other = |
| static_cast<const BasicColorMatrixFilterOperation*>(&o); |
| return amount_ == other->amount_; |
| } |
| |
| BasicColorMatrixFilterOperation(double amount, OperationType type) |
| : FilterOperation(type), amount_(amount) {} |
| |
| double amount_; |
| }; |
| |
| inline bool IsBasicColorMatrixFilterOperation( |
| const FilterOperation& operation) { |
| FilterOperation::OperationType type = operation.GetType(); |
| return type == FilterOperation::GRAYSCALE || type == FilterOperation::SEPIA || |
| type == FilterOperation::SATURATE || |
| type == FilterOperation::HUE_ROTATE; |
| } |
| |
| DEFINE_TYPE_CASTS(BasicColorMatrixFilterOperation, |
| FilterOperation, |
| op, |
| IsBasicColorMatrixFilterOperation(*op), |
| IsBasicColorMatrixFilterOperation(op)); |
| |
| // INVERT, BRIGHTNESS, CONTRAST and OPACITY are variations on a basic component |
| // transfer effect. |
| class CORE_EXPORT BasicComponentTransferFilterOperation |
| : public FilterOperation { |
| public: |
| static BasicComponentTransferFilterOperation* Create(double amount, |
| OperationType type) { |
| return new BasicComponentTransferFilterOperation(amount, type); |
| } |
| |
| double Amount() const { return amount_; } |
| |
| bool AffectsOpacity() const override { return type_ == OPACITY; } |
| |
| private: |
| FilterOperation* Blend(const FilterOperation* from, |
| double progress) const override; |
| bool operator==(const FilterOperation& o) const override { |
| if (!IsSameType(o)) |
| return false; |
| const BasicComponentTransferFilterOperation* other = |
| static_cast<const BasicComponentTransferFilterOperation*>(&o); |
| return amount_ == other->amount_; |
| } |
| |
| BasicComponentTransferFilterOperation(double amount, OperationType type) |
| : FilterOperation(type), amount_(amount) {} |
| |
| double amount_; |
| }; |
| |
| inline bool IsBasicComponentTransferFilterOperation( |
| const FilterOperation& operation) { |
| FilterOperation::OperationType type = operation.GetType(); |
| return type == FilterOperation::INVERT || type == FilterOperation::OPACITY || |
| type == FilterOperation::BRIGHTNESS || |
| type == FilterOperation::CONTRAST; |
| } |
| |
| DEFINE_TYPE_CASTS(BasicComponentTransferFilterOperation, |
| FilterOperation, |
| op, |
| IsBasicComponentTransferFilterOperation(*op), |
| IsBasicComponentTransferFilterOperation(op)); |
| |
| class CORE_EXPORT BlurFilterOperation : public FilterOperation { |
| public: |
| static BlurFilterOperation* Create(const Length& std_deviation) { |
| return new BlurFilterOperation(std_deviation); |
| } |
| |
| const Length& StdDeviation() const { return std_deviation_; } |
| |
| bool AffectsOpacity() const override { return true; } |
| bool MovesPixels() const override { return true; } |
| FloatRect MapRect(const FloatRect&) const override; |
| |
| private: |
| FilterOperation* Blend(const FilterOperation* from, |
| double progress) const override; |
| bool operator==(const FilterOperation& o) const override { |
| if (!IsSameType(o)) |
| return false; |
| const BlurFilterOperation* other = |
| static_cast<const BlurFilterOperation*>(&o); |
| return std_deviation_ == other->std_deviation_; |
| } |
| |
| BlurFilterOperation(const Length& std_deviation) |
| : FilterOperation(BLUR), std_deviation_(std_deviation) {} |
| |
| Length std_deviation_; |
| }; |
| |
| DEFINE_FILTER_OPERATION_TYPE_CASTS(BlurFilterOperation, BLUR); |
| |
| class CORE_EXPORT DropShadowFilterOperation : public FilterOperation { |
| public: |
| static DropShadowFilterOperation* Create(const ShadowData& shadow) { |
| return new DropShadowFilterOperation(shadow); |
| } |
| |
| const ShadowData& Shadow() const { return shadow_; } |
| |
| bool AffectsOpacity() const override { return true; } |
| bool MovesPixels() const override { return true; } |
| FloatRect MapRect(const FloatRect&) const override; |
| |
| private: |
| FilterOperation* Blend(const FilterOperation* from, |
| double progress) const override; |
| bool operator==(const FilterOperation& o) const override { |
| if (!IsSameType(o)) |
| return false; |
| const DropShadowFilterOperation* other = |
| static_cast<const DropShadowFilterOperation*>(&o); |
| return shadow_ == other->shadow_; |
| } |
| |
| DropShadowFilterOperation(const ShadowData& shadow) |
| : FilterOperation(DROP_SHADOW), shadow_(shadow) {} |
| |
| ShadowData shadow_; |
| }; |
| |
| DEFINE_FILTER_OPERATION_TYPE_CASTS(DropShadowFilterOperation, DROP_SHADOW); |
| |
| class CORE_EXPORT BoxReflectFilterOperation : public FilterOperation { |
| public: |
| static BoxReflectFilterOperation* Create(const BoxReflection& reflection) { |
| return new BoxReflectFilterOperation(reflection); |
| } |
| |
| const BoxReflection& Reflection() const { return reflection_; } |
| |
| bool AffectsOpacity() const override { return true; } |
| bool MovesPixels() const override { return true; } |
| FloatRect MapRect(const FloatRect&) const override; |
| |
| private: |
| FilterOperation* Blend(const FilterOperation* from, |
| double progress) const override; |
| bool operator==(const FilterOperation&) const override; |
| |
| BoxReflectFilterOperation(const BoxReflection& reflection) |
| : FilterOperation(BOX_REFLECT), reflection_(reflection) {} |
| |
| BoxReflection reflection_; |
| }; |
| DEFINE_FILTER_OPERATION_TYPE_CASTS(BoxReflectFilterOperation, BOX_REFLECT); |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_FILTER_OPERATION_H_ |