third_party/WebKit/Source/platform/transforms/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 "platform/transforms/TransformOperation.h"
  29
  30 namespace blink {
  31
  32 class PLATFORM_EXPORT 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     FloatPoint3D axis() const;
  50     static bool shareSameAxis(const RotateTransformOperation* fromRotation, const RotateTransformOperation* toRotation, FloatPoint3D* axis, double* fromAngle, double* toAngle);
  51
  52     virtual bool canBlendWith(const TransformOperation& other) const;
  53     OperationType type() const override { return m_type; }
  54
  55     void apply(TransformationMatrix& transform, const FloatSize& /*borderBoxSize*/) const override
  56     {
  57         transform.rotate3d(m_x, m_y, m_z, m_angle);
  58     }
  59
  60     static bool isMatchingOperationType(OperationType type) { return type == Rotate || type == RotateX || type == RotateY || type == RotateZ || type == Rotate3D; }
  61
  62 private:
  63     bool operator==(const TransformOperation& o) const override
  64     {
  65         if (!isSameType(o))
  66             return false;
  67         const RotateTransformOperation* r = static_cast<const RotateTransformOperation*>(&o);
  68         return m_x == r->m_x && m_y == r->m_y && m_z == r->m_z && m_angle == r->m_angle;
  69     }
  70
  71     PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false) override;
  72     PassRefPtr<TransformOperation> zoom(double factor) final { return this; }
  73
  74     RotateTransformOperation(double x, double y, double z, double angle, OperationType type)
  75         : m_x(x)
  76         , m_y(y)
  77         , m_z(z)
  78         , m_angle(angle)
  79         , m_type(type)
  80     {
  81         ASSERT(isMatchingOperationType(type));
  82     }
  83
  84     double m_x;
  85     double m_y;
  86     double m_z;
  87     double m_angle;
  88     OperationType m_type;
  89 };
  90
  91 DEFINE_TRANSFORM_TYPE_CASTS(RotateTransformOperation);
  92
  93 } // namespace blink
  94
  95 #endif // RotateTransformOperation_h