| /* |
| * Copyright 2014 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_FONT_WEIGHT_VALUE_H_ |
| #define COBALT_CSSOM_FONT_WEIGHT_VALUE_H_ |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/ref_counted.h" |
| #include "cobalt/base/polymorphic_equatable.h" |
| #include "cobalt/cssom/property_value.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| class PropertyValueVisitor; |
| |
| // Specifies the weight of glyphs in the font, their degree of blackness |
| // or stroke thickness. |
| // https://www.w3.org/TR/css3-fonts/#font-weight-prop |
| class FontWeightValue : public PropertyValue { |
| public: |
| enum Value { |
| kThinAka100, |
| kExtraLightAka200, // same as Ultra Light |
| kLightAka300, |
| kNormalAka400, |
| kMediumAka500, |
| kSemiBoldAka600, // same as Demi Bold |
| kBoldAka700, |
| kExtraBoldAka800, // same as Ultra Bold |
| kBlackAka900, // same as Heavy |
| }; |
| |
| // For the sake of saving memory an explicit instantiation of this class |
| // is disallowed. Use factory methods below to obtain shared instances. |
| static const scoped_refptr<FontWeightValue>& GetThinAka100(); |
| static const scoped_refptr<FontWeightValue>& GetExtraLightAka200(); |
| static const scoped_refptr<FontWeightValue>& GetLightAka300(); |
| static const scoped_refptr<FontWeightValue>& GetNormalAka400(); |
| static const scoped_refptr<FontWeightValue>& GetMediumAka500(); |
| static const scoped_refptr<FontWeightValue>& GetSemiBoldAka600(); |
| static const scoped_refptr<FontWeightValue>& GetBoldAka700(); |
| static const scoped_refptr<FontWeightValue>& GetExtraBoldAka800(); |
| static const scoped_refptr<FontWeightValue>& GetBlackAka900(); |
| |
| void Accept(PropertyValueVisitor* visitor) OVERRIDE; |
| |
| Value value() const { return value_; } |
| |
| std::string ToString() const OVERRIDE; |
| |
| bool operator==(const FontWeightValue& other) const { |
| return value_ == other.value_; |
| } |
| |
| DEFINE_POLYMORPHIC_EQUATABLE_TYPE(FontWeightValue); |
| |
| // Implementation detail, has to be public in order to be constructible. |
| struct NonTrivialStaticFields; |
| |
| private: |
| explicit FontWeightValue(Value value) : value_(value) {} |
| ~FontWeightValue() OVERRIDE {} |
| |
| const Value value_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FontWeightValue); |
| }; |
| |
| } // namespace cssom |
| } // namespace cobalt |
| |
| #endif // COBALT_CSSOM_FONT_WEIGHT_VALUE_H_ |