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      1 /*
      2  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  */
     19 
     20 #ifndef GradientAttributes_h
     21 #define GradientAttributes_h
     22 
     23 #include "core/svg/SVGUnitTypes.h"
     24 
     25 namespace WebCore {
     26 
     27 struct GradientAttributes {
     28     GradientAttributes()
     29         : m_spreadMethod(SVGSpreadMethodPad)
     30         , m_gradientUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
     31         , m_spreadMethodSet(false)
     32         , m_gradientUnitsSet(false)
     33         , m_gradientTransformSet(false)
     34         , m_stopsSet(false)
     35     {
     36     }
     37 
     38     SVGSpreadMethodType spreadMethod() const { return static_cast<SVGSpreadMethodType>(m_spreadMethod); }
     39     SVGUnitTypes::SVGUnitType gradientUnits() const { return static_cast<SVGUnitTypes::SVGUnitType>(m_gradientUnits); }
     40     AffineTransform gradientTransform() const { return m_gradientTransform; }
     41     const Vector<Gradient::ColorStop>& stops() const { return m_stops; }
     42 
     43     void setSpreadMethod(SVGSpreadMethodType value)
     44     {
     45         m_spreadMethod = value;
     46         m_spreadMethodSet = true;
     47     }
     48 
     49     void setGradientUnits(SVGUnitTypes::SVGUnitType unitType)
     50     {
     51         m_gradientUnits = unitType;
     52         m_gradientUnitsSet = true;
     53     }
     54 
     55     void setGradientTransform(const AffineTransform& value)
     56     {
     57         m_gradientTransform = value;
     58         m_gradientTransformSet = true;
     59     }
     60 
     61     void setStops(const Vector<Gradient::ColorStop>& value)
     62     {
     63         m_stops = value;
     64         m_stopsSet = true;
     65     }
     66 
     67     bool hasSpreadMethod() const { return m_spreadMethodSet; }
     68     bool hasGradientUnits() const { return m_gradientUnitsSet; }
     69     bool hasGradientTransform() const { return m_gradientTransformSet; }
     70     bool hasStops() const { return m_stopsSet; }
     71 
     72 private:
     73     // Properties
     74     AffineTransform m_gradientTransform;
     75     Vector<Gradient::ColorStop> m_stops;
     76 
     77     unsigned m_spreadMethod : 2;
     78     unsigned m_gradientUnits : 2;
     79 
     80     // Property states
     81     unsigned m_spreadMethodSet : 1;
     82     unsigned m_gradientUnitsSet : 1;
     83     unsigned m_gradientTransformSet : 1;
     84     unsigned m_stopsSet : 1;
     85 };
     86 
     87 struct SameSizeAsGradientAttributes {
     88     AffineTransform a;
     89     Vector<Gradient::ColorStop> b;
     90     unsigned c : 8;
     91 };
     92 
     93 COMPILE_ASSERT(sizeof(GradientAttributes) == sizeof(SameSizeAsGradientAttributes), GradientAttributes_size_guard);
     94 
     95 } // namespace WebCore
     96 
     97 #endif
     98