WebCore/RotateTransformOperation.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 RotateTransformOperation_h
  26 #define RotateTransformOperation_h
  27
  28 #include "TransformOperation.h"
  29
  30 namespace WebCore {
  31
  32 class RotateTransformOperation : public TransformOperation {
  33 public:
  34     static PassRefPtr<RotateTransformOperation> create(double angle, OperationType type)
  35     {
  36         return adoptRef(new RotateTransformOperation(0, 0, 1, angle, type));
  37     }
  38
  39     static PassRefPtr<RotateTransformOperation> create(double x, double y, double z, double angle, OperationType type)
  40     {
  41         return adoptRef(new RotateTransformOperation(x, y, z, angle, type));
  42     }
  43
  44     double angle() const { return m_angle; }
  45
  46 private:
  47     virtual bool isIdentity() const { return m_angle == 0; }
  48
  49     virtual OperationType getOperationType() const { return m_type; }
  50     virtual bool isSameType(const TransformOperation& o) const { return o.getOperationType() == m_type; }
  51
  52     virtual bool operator==(const TransformOperation& o) const
  53     {
  54         if (!isSameType(o))
  55             return false;
  56         const RotateTransformOperation* r = static_cast<const RotateTransformOperation*>(&o);
  57         return m_x == r->m_x && m_y == r->m_y && m_z == r->m_z && m_angle == r->m_angle;
  58     }
  59
  60     virtual bool apply(TransformationMatrix& transform, const IntSize& /*borderBoxSize*/) const
  61     {
  62         transform.rotate3d(m_x, m_y, m_z, m_angle);
  63         return false;
  64     }
  65
  66     virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false);
  67
  68     RotateTransformOperation(double x, double y, double z, double angle, OperationType type)
  69         : m_x(x)
  70         , m_y(y)
  71         , m_z(z)
  72         , m_angle(angle)
  73         , m_type(type)
  74     {
  75         ASSERT(type == ROTATE_X || type == ROTATE_Y || type == ROTATE_Z || type == ROTATE_3D);
  76     }
  77
  78     double m_x;
  79     double m_y;
  80     double m_z;
  81     double m_angle;
  82     OperationType m_type;
  83 };
  84
  85 } // namespace WebCore
  86
  87 #endif // RotateTransformOperation_h