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 TranslateTransformOperation_h
26#define TranslateTransformOperation_h
27
28#include "Length.h"
29#include "LengthFunctions.h"
30#include "TransformOperation.h"
31
32namespace WebCore {
33
34class TranslateTransformOperation : public TransformOperation {
35public:
36    static PassRefPtr<TranslateTransformOperation> create(const Length& tx, const Length& ty, OperationType type)
37    {
38        return adoptRef(new TranslateTransformOperation(tx, ty, Length(0, Fixed), type));
39    }
40
41    static PassRefPtr<TranslateTransformOperation> create(const Length& tx, const Length& ty, const Length& tz, OperationType type)
42    {
43        return adoptRef(new TranslateTransformOperation(tx, ty, tz, type));
44    }
45
46    double x(const FloatSize& borderBoxSize) const { return floatValueForLength(m_x, borderBoxSize.width()); }
47    double y(const FloatSize& borderBoxSize) const { return floatValueForLength(m_y, borderBoxSize.height()); }
48    double z(const FloatSize&) const { return floatValueForLength(m_z, 1); }
49
50    Length x() const { return m_x; }
51    Length y() const { return m_y; }
52    Length z() const { return m_z; }
53
54private:
55    virtual bool isIdentity() const { return !floatValueForLength(m_x, 1) && !floatValueForLength(m_y, 1) && !floatValueForLength(m_z, 1); }
56
57    virtual OperationType getOperationType() const { return m_type; }
58    virtual bool isSameType(const TransformOperation& o) const { return o.getOperationType() == m_type; }
59
60    virtual bool operator==(const TransformOperation& o) const
61    {
62        if (!isSameType(o))
63            return false;
64        const TranslateTransformOperation* t = static_cast<const TranslateTransformOperation*>(&o);
65        return m_x == t->m_x && m_y == t->m_y && m_z == t->m_z;
66    }
67
68    virtual bool apply(TransformationMatrix& transform, const FloatSize& borderBoxSize) const
69    {
70        transform.translate3d(x(borderBoxSize), y(borderBoxSize), z(borderBoxSize));
71        return m_x.type() == Percent || m_y.type() == Percent;
72    }
73
74    virtual PassRefPtr<TransformOperation> blend(const TransformOperation* from, double progress, bool blendToIdentity = false);
75
76    TranslateTransformOperation(const Length& tx, const Length& ty, const Length& tz, OperationType type)
77        : m_x(tx)
78        , m_y(ty)
79        , m_z(tz)
80        , m_type(type)
81    {
82        ASSERT(type == TRANSLATE_X || type == TRANSLATE_Y || type == TRANSLATE_Z || type == TRANSLATE || type == TRANSLATE_3D);
83    }
84
85    Length m_x;
86    Length m_y;
87    Length m_z;
88    OperationType m_type;
89};
90
91} // namespace WebCore
92
93#endif // TranslateTransformOperation_h
94