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 TransformOperations_h
26 #define TransformOperations_h
27 
28 #include "TransformOperation.h"
29 #include <wtf/RefPtr.h>
30 #include <wtf/Vector.h>
31 
32 namespace WebCore {
33 
34 class TransformOperations {
35     WTF_MAKE_FAST_ALLOCATED;
36 public:
37     TransformOperations(bool makeIdentity = false);
38 
39     bool operator==(const TransformOperations& o) const;
40     bool operator!=(const TransformOperations& o) const
41     {
42         return !(*this == o);
43     }
44 
apply(const IntSize & sz,TransformationMatrix & t)45     void apply(const IntSize& sz, TransformationMatrix& t) const
46     {
47         for (unsigned i = 0; i < m_operations.size(); ++i)
48             m_operations[i]->apply(t, sz);
49     }
50 
51     // Return true if any of the operation types are 3D operation types (even if the
52     // values describe affine transforms)
has3DOperation()53     bool has3DOperation() const
54     {
55         for (unsigned i = 0; i < m_operations.size(); ++i)
56             if (m_operations[i]->is3DOperation())
57                 return true;
58         return false;
59     }
60 
clear()61     void clear()
62     {
63         m_operations.clear();
64     }
65 
operations()66     Vector<RefPtr<TransformOperation> >& operations() { return m_operations; }
operations()67     const Vector<RefPtr<TransformOperation> >& operations() const { return m_operations; }
68 
size()69     size_t size() const { return m_operations.size(); }
at(size_t index)70     const TransformOperation* at(size_t index) const { return index < m_operations.size() ? m_operations.at(index).get() : 0; }
71 
72 private:
73     Vector<RefPtr<TransformOperation> > m_operations;
74 };
75 
76 } // namespace WebCore
77 
78 #endif // TransformOperations_h
79