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      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, 2009 Apple Inc. All rights reserved.
      6  * Copyright (C) 2006 Graham Dennis (graham.dennis (at) gmail.com)
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #ifndef ShadowData_h
     26 #define ShadowData_h
     27 
     28 #include "Color.h"
     29 
     30 namespace WebCore {
     31 
     32 class FloatRect;
     33 class IntRect;
     34 
     35 enum ShadowStyle { Normal, Inset };
     36 
     37 // This struct holds information about shadows for the text-shadow and box-shadow properties.
     38 
     39 class ShadowData {
     40     WTF_MAKE_FAST_ALLOCATED;
     41 public:
     42     ShadowData()
     43         : m_x(0)
     44         , m_y(0)
     45         , m_blur(0)
     46         , m_spread(0)
     47         , m_style(Normal)
     48         , m_isWebkitBoxShadow(false)
     49         , m_next(0)
     50     {
     51     }
     52 
     53     ShadowData(int x, int y, int blur, int spread, ShadowStyle style, bool isWebkitBoxShadow, const Color& color)
     54         : m_x(x)
     55         , m_y(y)
     56         , m_blur(blur)
     57         , m_spread(spread)
     58         , m_color(color)
     59         , m_style(style)
     60         , m_isWebkitBoxShadow(isWebkitBoxShadow)
     61         , m_next(0)
     62     {
     63     }
     64 
     65     ShadowData(const ShadowData& o);
     66     ~ShadowData() { delete m_next; }
     67 
     68     bool operator==(const ShadowData& o) const;
     69     bool operator!=(const ShadowData& o) const
     70     {
     71         return !(*this == o);
     72     }
     73 
     74     int x() const { return m_x; }
     75     int y() const { return m_y; }
     76     int blur() const { return m_blur; }
     77     int spread() const { return m_spread; }
     78     ShadowStyle style() const { return m_style; }
     79     const Color& color() const { return m_color; }
     80     bool isWebkitBoxShadow() const { return m_isWebkitBoxShadow; }
     81 
     82     const ShadowData* next() const { return m_next; }
     83     void setNext(ShadowData* shadow) { m_next = shadow; }
     84 
     85     void adjustRectForShadow(IntRect&, int additionalOutlineSize = 0) const;
     86     void adjustRectForShadow(FloatRect&, int additionalOutlineSize = 0) const;
     87 
     88 private:
     89     int m_x;
     90     int m_y;
     91     int m_blur;
     92     int m_spread;
     93     Color m_color;
     94     ShadowStyle m_style;
     95     bool m_isWebkitBoxShadow;
     96     ShadowData* m_next;
     97 };
     98 
     99 } // namespace WebCore
    100 
    101 #endif // ShadowData_h
    102