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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDECLARATIVEFLICKABLE_P_H
#define QDECLARATIVEFLICKABLE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "private/qdeclarativeflickable_p.h"
#include "private/qdeclarativeitem_p.h"
#include "private/qdeclarativeitemchangelistener_p.h"
#include <qdeclarative.h>
#include <qdeclarativetimeline_p_p.h>
#include <qdeclarativeanimation_p_p.h>
#include <qdatetime.h>
QT_BEGIN_NAMESPACE
class QDeclarativeFlickableVisibleArea;
class QDeclarativeFlickablePrivate : public QDeclarativeItemPrivate, public QDeclarativeItemChangeListener
{
Q_DECLARE_PUBLIC(QDeclarativeFlickable)
public:
QDeclarativeFlickablePrivate();
void init();
struct Velocity : public QDeclarativeTimeLineValue
{
Velocity(QDeclarativeFlickablePrivate *p)
: parent(p) {}
virtual void setValue(qreal v) {
if (v != value()) {
QDeclarativeTimeLineValue::setValue(v);
parent->updateVelocity();
}
}
QDeclarativeFlickablePrivate *parent;
};
struct AxisData {
AxisData(QDeclarativeFlickablePrivate *fp, void (QDeclarativeFlickablePrivate::*func)(qreal))
: move(fp, func), viewSize(-1), smoothVelocity(fp), atEnd(false), atBeginning(true)
{}
QDeclarativeTimeLineValueProxy<QDeclarativeFlickablePrivate> move;
qreal viewSize;
qreal pressPos;
qreal velocity;
qreal flickTarget;
QDeclarativeFlickablePrivate::Velocity smoothVelocity;
bool atEnd : 1;
bool atBeginning : 1;
};
void flickX(qreal velocity);
void flickY(qreal velocity);
virtual void flick(AxisData &data, qreal minExtent, qreal maxExtent, qreal vSize,
QDeclarativeTimeLineCallback::Callback fixupCallback, qreal velocity);
void fixupX();
void fixupY();
virtual void fixup(AxisData &data, qreal minExtent, qreal maxExtent);
void updateBeginningEnd();
void captureDelayedPress(QGraphicsSceneMouseEvent *event);
void clearDelayedPress();
void setRoundedViewportX(qreal x);
void setRoundedViewportY(qreal y);
qreal overShootDistance(qreal velocity, qreal size);
void itemGeometryChanged(QDeclarativeItem *, const QRectF &, const QRectF &);
public:
QDeclarativeItem *viewport;
AxisData hData;
AxisData vData;
QDeclarativeTimeLine timeline;
bool flicked : 1;
bool moving : 1;
bool stealMouse : 1;
bool pressed : 1;
bool interactive : 1;
QTime lastPosTime;
QPointF lastPos;
QPointF pressPos;
QTime pressTime;
qreal deceleration;
qreal maxVelocity;
QTime velocityTime;
QPointF lastFlickablePosition;
qreal reportedVelocitySmoothing;
QGraphicsSceneMouseEvent *delayedPressEvent;
QGraphicsItem *delayedPressTarget;
QBasicTimer delayedPressTimer;
int pressDelay;
int fixupDuration;
static void fixupY_callback(void *);
static void fixupX_callback(void *);
void updateVelocity();
int vTime;
QDeclarativeTimeLine velocityTimeline;
QDeclarativeFlickableVisibleArea *visibleArea;
QDeclarativeFlickable::FlickDirection flickDirection;
QDeclarativeFlickable::BoundsBehavior boundsBehavior;
void handleMousePressEvent(QGraphicsSceneMouseEvent *);
void handleMouseMoveEvent(QGraphicsSceneMouseEvent *);
void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *);
// flickableData property
static void data_append(QDeclarativeListProperty<QObject> *, QObject *);
};
class QDeclarativeFlickableVisibleArea : public QObject
{
Q_OBJECT
Q_PROPERTY(qreal xPosition READ xPosition NOTIFY pageChanged)
Q_PROPERTY(qreal yPosition READ yPosition NOTIFY pageChanged)
Q_PROPERTY(qreal widthRatio READ widthRatio NOTIFY pageChanged)
Q_PROPERTY(qreal heightRatio READ heightRatio NOTIFY pageChanged)
public:
QDeclarativeFlickableVisibleArea(QDeclarativeFlickable *parent=0);
qreal xPosition() const;
qreal widthRatio() const;
qreal yPosition() const;
qreal heightRatio() const;
void updateVisible();
signals:
void pageChanged();
private:
QDeclarativeFlickable *flickable;
qreal m_xPosition;
qreal m_widthRatio;
qreal m_yPosition;
qreal m_heightRatio;
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QDeclarativeFlickableVisibleArea)
#endif
|
