| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef COBALT_CSSOM_RADIAL_GRADIENT_VALUE_H_ |
| #define COBALT_CSSOM_RADIAL_GRADIENT_VALUE_H_ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/optional.h" |
| #include "cobalt/base/polymorphic_equatable.h" |
| #include "cobalt/cssom/color_stop.h" |
| #include "cobalt/cssom/property_list_value.h" |
| #include "cobalt/cssom/property_value.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| // A radial gradient is specified by indicating the center of the gradient ( |
| // where the 0% ellipse will be) and the size and shape of the ending shape (the |
| // 100% ellipse). Color stops are given as a list. Starting from the center and |
| // progressing towards (and potentially beyond) the ending shape |
| // uniformly-scaled concentric ellipses are drawn and colored according to the |
| // specified color stops. |
| // https://www.w3.org/TR/css3-images/#radial-gradients |
| class RadialGradientValue : public PropertyValue { |
| public: |
| enum Shape { |
| kCircle, |
| kEllipse, |
| }; |
| |
| enum SizeKeyword { |
| kClosestSide, |
| kFarthestSide, |
| kClosestCorner, |
| kFarthestCorner, |
| }; |
| |
| RadialGradientValue(Shape shape, SizeKeyword size_keyword, |
| const scoped_refptr<PropertyListValue>& position, |
| ColorStopList color_stop_list) |
| : shape_(shape), |
| size_keyword_(size_keyword), |
| position_(position), |
| color_stop_list_(color_stop_list.Pass()) {} |
| |
| RadialGradientValue(Shape shape, |
| const scoped_refptr<PropertyListValue>& size_value, |
| const scoped_refptr<PropertyListValue>& position, |
| ColorStopList color_stop_list) |
| : shape_(shape), |
| size_value_(size_value), |
| position_(position), |
| color_stop_list_(color_stop_list.Pass()) {} |
| |
| void Accept(PropertyValueVisitor* visitor) OVERRIDE; |
| |
| const Shape& shape() const { return shape_; } |
| |
| base::optional<SizeKeyword> size_keyword() const { return size_keyword_; } |
| const scoped_refptr<PropertyListValue>& size_value() const { |
| return size_value_; |
| } |
| |
| const scoped_refptr<PropertyListValue>& position() const { return position_; } |
| |
| const ColorStopList& color_stop_list() const { |
| return color_stop_list_; |
| } |
| |
| std::string ToString() const OVERRIDE; |
| |
| bool operator==(const RadialGradientValue& other) const; |
| |
| DEFINE_POLYMORPHIC_EQUATABLE_TYPE(RadialGradientValue); |
| |
| private: |
| ~RadialGradientValue() OVERRIDE {} |
| |
| const Shape shape_; |
| |
| // Exactly one of |size_keyword_| and |size_value_| is engaged. |
| const base::optional<SizeKeyword> size_keyword_; |
| const scoped_refptr<PropertyListValue> size_value_; |
| |
| const scoped_refptr<PropertyListValue> position_; |
| const ColorStopList color_stop_list_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RadialGradientValue); |
| }; |
| |
| } // namespace cssom |
| } // namespace cobalt |
| |
| #endif // COBALT_CSSOM_RADIAL_GRADIENT_VALUE_H_ |