WebCore/rendering/style/MatrixTransformOperation.h

   1 /*
   2  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
   3  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
   4  *           (C) 2000 Dirk Mueller (mueller@kde.org)
   5  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
   6  * Copyright (C) 2006 Graham Dennis (graham.dennis@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 MatrixTransformOperation_h
  26 #define MatrixTransformOperation_h
  27
  28 #include "TransformOperation.h"
  29
  30 namespace WebCore {
  31
  32 class MatrixTransformOperation : public TransformOperation {
  33 public:
  34     static PassRefPtr<MatrixTransformOperation> create(double a, double b, double c, double d, double e, double f)
  35     {
  36         return adoptRef(new MatrixTransformOperation(a, b, c, d, e, f));
  37     }
  38
  39     virtual bool isIdentity() const { return m_a == 1 && m_b == 0 && m_c == 0 && m_d == 1 && m_e == 0 && m_f == 0; }
  40     virtual OperationType getOperationType() const { return MATRIX; }
  41     virtual bool isSameType(const TransformOperation& o) const { return o.getOperationType() == MATRIX; }
  42
  43     virtual bool operator==(const TransformOperation& o) const
  44     {
  45         if (!isSameType(o))
  46             return false;
  47
  48         const MatrixTransformOperation* m = static_cast<const MatrixTransformOperation*>(&o);
  49         return m_a == m->m_a && m_b == m->m_b && m_c == m->m_c && m_d == m->m_d && m_e == m->m_e && m_f == m->m_f;
  50     }
  51
  52     virtual bool apply(AffineTransform& transform, const IntSize& borderBoxSize) const
  53     {
  54         AffineTransform matrix(m_a, m_b, m_c, m_d, m_e, m_f);
  55         transform = matrix * transform;
  56         return false;
  57     }
  58
  59     virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false);
  60
  61 private:
  62     MatrixTransformOperation(double a, double b, double c, double d, double e, double f)
  63         : m_a(a)
  64         , m_b(b)
  65         , m_c(c)
  66         , m_d(d)
  67         , m_e(e)
  68         , m_f(f)
  69     {
  70     }
  71
  72     double m_a;
  73     double m_b;
  74     double m_c;
  75     double m_d;
  76     double m_e;
  77     double m_f;
  78 };
  79
  80 } // namespace WebCore
  81
  82 #endif // MatrixTransformOperation_h