Home | History | Annotate | Download | only in style 
      1 /*
      2  * Copyright (C) 2000 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 2000 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2000 Dirk Mueller (mueller (at) kde.org)
      5  * Copyright (C) 2003, 2005, 2006, 2007, 2008, 2013 Apple Inc. All rights reserved.
      6  *
      7  * This library is free software; you can redistribute it and/or
      8  * modify it under the terms of the GNU Library General Public
      9  * License as published by the Free Software Foundation; either
     10  * version 2 of the License, or (at your option) any later version.
     11  *
     12  * This library is distributed in the hope that it will be useful,
     13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15  * Library General Public License for more details.
     16  *
     17  * You should have received a copy of the GNU Library General Public License
     18  * along with this library; see the file COPYING.LIB.  If not, write to
     19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     20  * Boston, MA 02110-1301, USA.
     21  *
     22  */
     23 
     24 #ifndef NinePieceImage_h
     25 #define NinePieceImage_h
     26 
     27 #include "core/platform/LayoutUnit.h"
     28 #include "core/platform/LengthBox.h"
     29 #include "core/rendering/style/DataRef.h"
     30 #include "core/rendering/style/StyleImage.h"
     31 
     32 namespace WebCore {
     33 
     34 enum ENinePieceImageRule {
     35     StretchImageRule, RoundImageRule, SpaceImageRule, RepeatImageRule
     36 };
     37 
     38 class NinePieceImageData : public RefCounted<NinePieceImageData> {
     39 public:
     40     static PassRefPtr<NinePieceImageData> create() { return adoptRef(new NinePieceImageData); }
     41     PassRefPtr<NinePieceImageData> copy() const { return adoptRef(new NinePieceImageData(*this)); }
     42 
     43     bool operator==(const NinePieceImageData&) const;
     44     bool operator!=(const NinePieceImageData& o) const { return !(*this == o); }
     45 
     46     bool fill : 1;
     47     unsigned horizontalRule : 2; // ENinePieceImageRule
     48     unsigned verticalRule : 2; // ENinePieceImageRule
     49     RefPtr<StyleImage> image;
     50     LengthBox imageSlices;
     51     LengthBox borderSlices;
     52     LengthBox outset;
     53 
     54 private:
     55     NinePieceImageData();
     56     NinePieceImageData(const NinePieceImageData&);
     57 };
     58 
     59 class NinePieceImage {
     60 public:
     61     NinePieceImage();
     62     NinePieceImage(PassRefPtr<StyleImage>, LengthBox imageSlices, bool fill, LengthBox borderSlices, LengthBox outset, ENinePieceImageRule horizontalRule, ENinePieceImageRule verticalRule);
     63 
     64     bool operator==(const NinePieceImage& other) const { return m_data == other.m_data; }
     65     bool operator!=(const NinePieceImage& other) const { return m_data != other.m_data; }
     66 
     67     bool hasImage() const { return m_data->image; }
     68     StyleImage* image() const { return m_data->image.get(); }
     69     void setImage(PassRefPtr<StyleImage> image) { m_data.access()->image = image; }
     70 
     71     const LengthBox& imageSlices() const { return m_data->imageSlices; }
     72     void setImageSlices(const LengthBox& slices) { m_data.access()->imageSlices = slices; }
     73 
     74     bool fill() const { return m_data->fill; }
     75     void setFill(bool fill) { m_data.access()->fill = fill; }
     76 
     77     const LengthBox& borderSlices() const { return m_data->borderSlices; }
     78     void setBorderSlices(const LengthBox& slices) { m_data.access()->borderSlices = slices; }
     79 
     80     const LengthBox& outset() const { return m_data->outset; }
     81     void setOutset(const LengthBox& outset) { m_data.access()->outset = outset; }
     82 
     83     ENinePieceImageRule horizontalRule() const { return static_cast<ENinePieceImageRule>(m_data->horizontalRule); }
     84     void setHorizontalRule(ENinePieceImageRule rule) { m_data.access()->horizontalRule = rule; }
     85 
     86     ENinePieceImageRule verticalRule() const { return static_cast<ENinePieceImageRule>(m_data->verticalRule); }
     87     void setVerticalRule(ENinePieceImageRule rule) { m_data.access()->verticalRule = rule; }
     88 
     89     void copyImageSlicesFrom(const NinePieceImage& other)
     90     {
     91         m_data.access()->imageSlices = other.m_data->imageSlices;
     92         m_data.access()->fill = other.m_data->fill;
     93     }
     94 
     95     void copyBorderSlicesFrom(const NinePieceImage& other)
     96     {
     97         m_data.access()->borderSlices = other.m_data->borderSlices;
     98     }
     99 
    100     void copyOutsetFrom(const NinePieceImage& other)
    101     {
    102         m_data.access()->outset = other.m_data->outset;
    103     }
    104 
    105     void copyRepeatFrom(const NinePieceImage& other)
    106     {
    107         m_data.access()->horizontalRule = other.m_data->horizontalRule;
    108         m_data.access()->verticalRule = other.m_data->verticalRule;
    109     }
    110 
    111     void setMaskDefaults()
    112     {
    113         m_data.access()->imageSlices = LengthBox(0);
    114         m_data.access()->fill = true;
    115         m_data.access()->borderSlices = LengthBox();
    116     }
    117 
    118     static LayoutUnit computeOutset(Length outsetSide, LayoutUnit borderSide)
    119     {
    120         if (outsetSide.isRelative())
    121             return outsetSide.value() * borderSide;
    122         return outsetSide.value();
    123     }
    124 
    125 private:
    126     DataRef<NinePieceImageData> m_data;
    127 };
    128 
    129 } // namespace WebCore
    130 
    131 #endif // NinePieceImage_h
    132