| /* |
| * Copyright (c) 2013, Opera Software ASA. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Opera Software ASA nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "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 THE COPYRIGHT |
| * OWNER 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 |
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| * (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_BORDER_IMAGE_LENGTH_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_BORDER_IMAGE_LENGTH_H_ |
| |
| #include "third_party/blink/renderer/platform/geometry/length.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h" |
| |
| namespace blink { |
| |
| // Represents an individual computed border image width or outset. |
| // |
| // http://www.w3.org/TR/css3-background/#border-image-width |
| // http://www.w3.org/TR/css3-background/#border-image-outset |
| class BorderImageLength { |
| DISALLOW_NEW(); |
| |
| public: |
| BorderImageLength(double number) : number_(number), type_(kNumberType) {} |
| |
| BorderImageLength(const Length& length) |
| : length_(length), number_(0), type_(kLengthType) {} |
| |
| bool IsNumber() const { return type_ == kNumberType; } |
| bool IsLength() const { return type_ == kLengthType; } |
| |
| const Length& length() const { |
| DCHECK(IsLength()); |
| return length_; |
| } |
| Length& length() { |
| DCHECK(IsLength()); |
| return length_; |
| } |
| |
| double Number() const { |
| DCHECK(IsNumber()); |
| return number_; |
| } |
| |
| bool operator==(const BorderImageLength& other) const { |
| return type_ == other.type_ && length_ == other.length_ && |
| number_ == other.number_; |
| } |
| |
| bool IsZero() const { |
| if (IsLength()) |
| return length_.IsZero(); |
| |
| DCHECK(IsNumber()); |
| return !number_; |
| } |
| |
| private: |
| // Ideally we would put the 2 following fields in a union, but Length has a |
| // constructor, a destructor and a copy assignment which isn't allowed. |
| Length length_; |
| double number_; |
| enum { kLengthType, kNumberType } type_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_CORE_STYLE_BORDER_IMAGE_LENGTH_H_ |