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 "platform/geometry/LayoutSize.h"
29#include "platform/transforms/TransformOperation.h"
30#include "wtf/RefPtr.h"
31#include "wtf/Vector.h"
32
33namespace blink {
34class FloatBox;
35class PLATFORM_EXPORT TransformOperations {
36    WTF_MAKE_FAST_ALLOCATED;
37public:
38    explicit TransformOperations(bool makeIdentity = false);
39
40    bool operator==(const TransformOperations& o) const;
41    bool operator!=(const TransformOperations& o) const
42    {
43        return !(*this == o);
44    }
45
46    void apply(const FloatSize& sz, TransformationMatrix& t) const
47    {
48        for (unsigned i = 0; i < m_operations.size(); ++i)
49            m_operations[i]->apply(t, sz);
50    }
51
52    // Return true if any of the operation types are 3D operation types (even if the
53    // values describe affine transforms)
54    bool has3DOperation() const
55    {
56        for (unsigned i = 0; i < m_operations.size(); ++i)
57            if (m_operations[i]->is3DOperation())
58                return true;
59        return false;
60    }
61
62    bool dependsOnBoxSize() const
63    {
64        for (unsigned i = 0; i < m_operations.size(); ++i) {
65            if (m_operations[i]->dependsOnBoxSize())
66                return true;
67        }
68        return false;
69    }
70
71    bool operationsMatch(const TransformOperations&) const;
72
73    void clear()
74    {
75        m_operations.clear();
76    }
77
78    Vector<RefPtr<TransformOperation> >& operations() { return m_operations; }
79    const Vector<RefPtr<TransformOperation> >& operations() const { return m_operations; }
80
81    size_t size() const { return m_operations.size(); }
82    const TransformOperation* at(size_t index) const { return index < m_operations.size() ? m_operations.at(index).get() : 0; }
83
84    bool blendedBoundsForBox(const FloatBox&, const TransformOperations& from, const double& minProgress, const double& maxProgress, FloatBox* bounds) const;
85    TransformOperations blendByMatchingOperations(const TransformOperations& from, const double& progress) const;
86    TransformOperations blendByUsingMatrixInterpolation(const TransformOperations& from, double progress) const;
87    TransformOperations blend(const TransformOperations& from, double progress) const;
88    TransformOperations add(const TransformOperations& addend) const;
89
90private:
91    Vector<RefPtr<TransformOperation> > m_operations;
92};
93
94} // namespace blink
95
96#endif // TransformOperations_h
97