| // Copyright 2014 The Cobalt Authors. 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_RGBA_COLOR_VALUE_H_ |
| #define COBALT_CSSOM_RGBA_COLOR_VALUE_H_ |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "cobalt/base/polymorphic_equatable.h" |
| #include "cobalt/cssom/property_value.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| class PropertyValueVisitor; |
| |
| // Represents color values that are convertible to RGBA without knowledge |
| // of element's context, for example: |
| // - #0047ab |
| // - rgb(0, 71, 171) |
| // - rgba(100%, 0, 0, 10%) |
| // - hsl(120, 75%, 75%) |
| // - fuchsia |
| // |
| // The data is maintained as a 32 bit integer layed out as RRGGBBAA, with |
| // the red bytes being the most significant. |
| // |
| // Applies to properties such as background-color, color, etc. |
| // |
| // See https://www.w3.org/TR/css3-color/#rgb-color for details. |
| class RGBAColorValue : public PropertyValue { |
| public: |
| static const scoped_refptr<RGBAColorValue>& GetAqua(); |
| static const scoped_refptr<RGBAColorValue>& GetBlack(); |
| static const scoped_refptr<RGBAColorValue>& GetBlue(); |
| static const scoped_refptr<RGBAColorValue>& GetFuchsia(); |
| static const scoped_refptr<RGBAColorValue>& GetGray(); |
| static const scoped_refptr<RGBAColorValue>& GetGreen(); |
| static const scoped_refptr<RGBAColorValue>& GetLime(); |
| static const scoped_refptr<RGBAColorValue>& GetMaroon(); |
| static const scoped_refptr<RGBAColorValue>& GetNavy(); |
| static const scoped_refptr<RGBAColorValue>& GetOlive(); |
| static const scoped_refptr<RGBAColorValue>& GetPurple(); |
| static const scoped_refptr<RGBAColorValue>& GetRed(); |
| static const scoped_refptr<RGBAColorValue>& GetSilver(); |
| static const scoped_refptr<RGBAColorValue>& GetTeal(); |
| static const scoped_refptr<RGBAColorValue>& GetTransparent(); |
| static const scoped_refptr<RGBAColorValue>& GetWhite(); |
| static const scoped_refptr<RGBAColorValue>& GetYellow(); |
| |
| explicit RGBAColorValue(uint32 value) : value_(value) {} |
| |
| RGBAColorValue(uint8 r, uint8 g, uint8 b, uint8 a) |
| : value_(static_cast<uint32>(r << 24) | static_cast<uint32>(g << 16) | |
| static_cast<uint32>(b << 8) | static_cast<uint32>(a << 0)) {} |
| |
| void Accept(PropertyValueVisitor* visitor) override; |
| |
| uint32 value() const { return value_; } |
| |
| uint8 r() const { return static_cast<uint8>((value_ >> 24) & 0xFF); } |
| uint8 g() const { return static_cast<uint8>((value_ >> 16) & 0xFF); } |
| uint8 b() const { return static_cast<uint8>((value_ >> 8) & 0xFF); } |
| uint8 a() const { return static_cast<uint8>((value_ >> 0) & 0xFF); } |
| |
| std::string ToString() const override; |
| |
| bool operator==(const RGBAColorValue& other) const { |
| return value_ == other.value_; |
| } |
| |
| DEFINE_POLYMORPHIC_EQUATABLE_TYPE(RGBAColorValue); |
| |
| private: |
| ~RGBAColorValue() override {} |
| |
| const uint32 value_; |
| |
| DISALLOW_COPY_AND_ASSIGN(RGBAColorValue); |
| }; |
| |
| } // namespace cssom |
| } // namespace cobalt |
| |
| #endif // COBALT_CSSOM_RGBA_COLOR_VALUE_H_ |