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
|
/****************************************************************************
**
** Copyright (C) 2009 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 QMLGRAPHICSLAYOUTS_P_H
#define QMLGRAPHICSLAYOUTS_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 "qmlgraphicspositioners_p.h"
#include "qmlgraphicsitem_p.h"
#include <qmlstate_p.h>
#include <qmltransitionmanager_p_p.h>
#include <qmlstateoperations_p.h>
#include <QtCore/QObject>
#include <QtCore/QString>
#include <QtCore/QTimer>
QT_BEGIN_NAMESPACE
class QmlGraphicsBasePositionerPrivate : public QmlGraphicsItemPrivate
{
Q_DECLARE_PUBLIC(QmlGraphicsBasePositioner)
public:
QmlGraphicsBasePositionerPrivate()
: spacing(0), type(QmlGraphicsBasePositioner::None), moveTransition(0), addTransition(0),
queuedPositioning(false)
{
}
~QmlGraphicsBasePositionerPrivate()
{
watched.removeAll(0);
foreach(QmlGraphicsItem* other, watched)
unwatchChanges(other);//Need to deregister from a list in QmlGI Private
}
void init(QmlGraphicsBasePositioner::PositionerType at)
{
type = at;
if (prePosIdx == -1) {
prePosIdx = QmlGraphicsBasePositioner::staticMetaObject.indexOfSlot("prePositioning()");
visibleIdx = QmlGraphicsItem::staticMetaObject.indexOfSignal("visibleChanged()");
opacityIdx = QmlGraphicsItem::staticMetaObject.indexOfSignal("opacityChanged()");
}
}
int spacing;
QmlGraphicsBasePositioner::PositionerType type;
QmlTransition *moveTransition;
QmlTransition *addTransition;
QSet<QmlGraphicsItem *> items;
QSet<QmlGraphicsItem *> newItems;
QmlStateOperation::ActionList addActions;
QmlStateOperation::ActionList moveActions;
QmlTransitionManager addTransitionManager;
QmlTransitionManager moveTransitionManager;
void watchChanges(QmlGraphicsItem *other);
void unwatchChanges(QmlGraphicsItem* other);
QList<QGuard<QmlGraphicsItem> > watched;//Can't have QSet and QGuard at the same time?
bool queuedPositioning;
static int prePosIdx;
static int visibleIdx;
static int opacityIdx;
virtual void otherSiblingOrderChange(QmlGraphicsItemPrivate* other)
{
Q_Q(QmlGraphicsBasePositioner);
Q_UNUSED(other);
if(!queuedPositioning){
//Delay is due to many children often being reordered at once
//And we only want to reposition them all once
QTimer::singleShot(0,q,SLOT(prePositioning()));
queuedPositioning = true;
}
}
};
QT_END_NAMESPACE
#endif
|
