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      1 /*
      2  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1. Redistributions of source code must retain the above
      9  *    copyright notice, this list of conditions and the following
     10  *    disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above
     12  *    copyright notice, this list of conditions and the following
     13  *    disclaimer in the documentation and/or other materials
     14  *    provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
     20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
     21  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
     25  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
     26  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #ifndef ShapeValue_h
     31 #define ShapeValue_h
     32 
     33 #include "core/fetch/ImageResource.h"
     34 #include "core/rendering/style/BasicShapes.h"
     35 #include "core/rendering/style/RenderStyleConstants.h"
     36 #include "core/rendering/style/StyleImage.h"
     37 #include "wtf/PassRefPtr.h"
     38 
     39 namespace WebCore {
     40 
     41 class ShapeValue : public RefCounted<ShapeValue> {
     42 public:
     43     enum ShapeValueType {
     44         // The Auto value is defined by a null ShapeValue*
     45         Shape,
     46         Box,
     47         Outside,
     48         Image
     49     };
     50 
     51     static PassRefPtr<ShapeValue> createShapeValue(PassRefPtr<BasicShape> shape)
     52     {
     53         return adoptRef(new ShapeValue(shape));
     54     }
     55 
     56     static PassRefPtr<ShapeValue> createOutsideValue()
     57     {
     58         return adoptRef(new ShapeValue(Outside));
     59     }
     60 
     61     static PassRefPtr<ShapeValue> createLayoutBoxValue(LayoutBox layoutBox)
     62     {
     63         return adoptRef(new ShapeValue(layoutBox));
     64     }
     65 
     66     static PassRefPtr<ShapeValue> createImageValue(PassRefPtr<StyleImage> image)
     67     {
     68         return adoptRef(new ShapeValue(image));
     69     }
     70 
     71     ShapeValueType type() const { return m_type; }
     72     BasicShape* shape() const { return m_shape.get(); }
     73 
     74     StyleImage* image() const { return m_image.get(); }
     75     bool isImageValid() const { return image() && image()->cachedImage() && image()->cachedImage()->hasImage(); }
     76     void setImage(PassRefPtr<StyleImage> image)
     77     {
     78         ASSERT(type() == Image);
     79         if (m_image != image)
     80             m_image = image;
     81     }
     82     LayoutBox layoutBox() const { return m_layoutBox; }
     83     void setLayoutBox(LayoutBox layoutBox) { m_layoutBox = layoutBox; }
     84 
     85     bool operator==(const ShapeValue& other) const { return type() == other.type(); }
     86 
     87 private:
     88     ShapeValue(PassRefPtr<BasicShape> shape)
     89         : m_type(Shape)
     90         , m_shape(shape)
     91         , m_layoutBox(ContentBox)
     92     {
     93     }
     94     ShapeValue(ShapeValueType type)
     95         : m_type(type)
     96         , m_layoutBox(ContentBox)
     97     {
     98     }
     99     ShapeValue(PassRefPtr<StyleImage> image)
    100         : m_type(Image)
    101         , m_image(image)
    102         , m_layoutBox(ContentBox)
    103     {
    104     }
    105     ShapeValue(LayoutBox layoutBox)
    106         : m_type(Box)
    107         , m_layoutBox(layoutBox)
    108     {
    109     }
    110 
    111 
    112     ShapeValueType m_type;
    113     RefPtr<BasicShape> m_shape;
    114     RefPtr<StyleImage> m_image;
    115     LayoutBox m_layoutBox;
    116 };
    117 
    118 }
    119 
    120 #endif
    121