1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QSCROLLERPROPERTIES_H
#define QSCROLLERPROPERTIES_H
#include <QtCore/QScopedPointer>
#include <QtCore/QMetaType>
#include <QtCore/QVariant>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
class QScroller;
class QScrollerPrivate;
class QScrollerPropertiesPrivate;
class Q_GUI_EXPORT QScrollerProperties
{
public:
QScrollerProperties();
QScrollerProperties(const QScrollerProperties &sp);
QScrollerProperties &operator=(const QScrollerProperties &sp);
virtual ~QScrollerProperties();
bool operator==(const QScrollerProperties &sp) const;
bool operator!=(const QScrollerProperties &sp) const;
static void setDefaultScrollerProperties(const QScrollerProperties &sp);
static void unsetDefaultScrollerProperties();
enum OvershootPolicy
{
OvershootWhenScrollable,
OvershootAlwaysOff,
OvershootAlwaysOn
};
enum FrameRates {
Standard,
Fps60,
Fps30,
Fps20
};
enum ScrollMetric
{
MousePressEventDelay, // qreal [s]
DragStartDistance, // qreal [m]
DragVelocitySmoothingFactor, // qreal [0..1/s] (complex calculation involving time) v = v_new* DASF + v_old * (1-DASF)
AxisLockThreshold, // qreal [0..1] atan(|min(dx,dy)|/|max(dx,dy)|)
ScrollingCurve, // QEasingCurve
DecelerationFactor, // slope of the curve
MinimumVelocity, // qreal [m/s]
MaximumVelocity, // qreal [m/s]
MaximumClickThroughVelocity, // qreal [m/s]
AcceleratingFlickMaximumTime, // qreal [s]
AcceleratingFlickSpeedupFactor, // qreal [1..]
SnapPositionRatio, // qreal [0..1]
SnapTime, // qreal [s]
OvershootDragResistanceFactor, // qreal [0..1]
OvershootDragDistanceFactor, // qreal [0..1]
OvershootScrollDistanceFactor, // qreal [0..1]
OvershootScrollTime, // qreal [s]
HorizontalOvershootPolicy, // enum OvershootPolicy
VerticalOvershootPolicy, // enum OvershootPolicy
FrameRate, // enum FrameRates
ScrollMetricCount
};
QVariant scrollMetric(ScrollMetric metric) const;
void setScrollMetric(ScrollMetric metric, const QVariant &value);
protected:
QScopedPointer<QScrollerPropertiesPrivate> d;
private:
QScrollerProperties(QScrollerPropertiesPrivate &dd);
friend class QScrollerPropertiesPrivate;
friend class QScroller;
friend class QScrollerPrivate;
};
QT_END_NAMESPACE
Q_DECLARE_METATYPE(QScrollerProperties::OvershootPolicy)
Q_DECLARE_METATYPE(QScrollerProperties::FrameRates)
QT_END_HEADER
#endif // QSCROLLERPROPERTIES_H
|
