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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 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 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 x() const { return m_x; }
     45     double y() const { return m_y; }
     46     double z() const { return m_z; }
     47     double angle() const { return m_angle; }
     48 
     49 private:
     50     virtual bool isIdentity() const { return m_angle == 0; }
     51 
     52     virtual OperationType getOperationType() const { return m_type; }
     53     virtual bool isSameType(const TransformOperation& o) const { return o.getOperationType() == m_type; }
     54 
     55     virtual bool operator==(const TransformOperation& o) const
     56     {
     57         if (!isSameType(o))
     58             return false;
     59         const RotateTransformOperation* r = static_cast<const RotateTransformOperation*>(&o);
     60         return m_x == r->m_x && m_y == r->m_y && m_z == r->m_z && m_angle == r->m_angle;
     61     }
     62 
     63     virtual bool apply(TransformationMatrix& transform, const IntSize& /*borderBoxSize*/) const
     64     {
     65         transform.rotate3d(m_x, m_y, m_z, m_angle);
     66         return false;
     67     }
     68 
     69     virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false);
     70 
     71     RotateTransformOperation(double x, double y, double z, double angle, OperationType type)
     72         : m_x(x)
     73         , m_y(y)
     74         , m_z(z)
     75         , m_angle(angle)
     76         , m_type(type)
     77     {
     78         ASSERT(type == ROTATE_X || type == ROTATE_Y || type == ROTATE_Z || type == ROTATE_3D);
     79     }
     80 
     81     double m_x;
     82     double m_y;
     83     double m_z;
     84     double m_angle;
     85     OperationType m_type;
     86 };
     87 
     88 } // namespace WebCore
     89 
     90 #endif // RotateTransformOperation_h
     91