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
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/****************************************************************************
**
** 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qmlgraphicsgraphicsobjectcontainer_p.h"
#include <QGraphicsObject>
#include <QGraphicsWidget>
#include <QGraphicsSceneResizeEvent>
#include "qmlgraphicsitem_p.h"
QT_BEGIN_NAMESPACE
class QmlGraphicsGraphicsObjectContainerPrivate : public QmlGraphicsItemPrivate
{
Q_DECLARE_PUBLIC(QmlGraphicsGraphicsObjectContainer)
public:
QmlGraphicsGraphicsObjectContainerPrivate() : QmlGraphicsItemPrivate(), graphicsObject(0), syncedResize(false)
{ }
void _q_updateSize();
void setFiltering(bool on)
{
Q_Q(QmlGraphicsGraphicsObjectContainer);
if (graphicsObject && graphicsObject->isWidget()) {
if (!on) {
graphicsObject->removeEventFilter(q);
QObject::disconnect(q, SIGNAL(widthChanged()), q, SLOT(_q_updateSize()));
QObject::disconnect(q, SIGNAL(heightChanged()), q, SLOT(_q_updateSize()));
} else {
graphicsObject->installEventFilter(q);
QObject::connect(q, SIGNAL(widthChanged()), q, SLOT(_q_updateSize()));
QObject::connect(q, SIGNAL(heightChanged()), q, SLOT(_q_updateSize()));
}
}
}
QGraphicsObject *graphicsObject;
bool syncedResize;
};
/*!
\qmlclass GraphicsObjectContainer QmlGraphicsGraphicsObjectContainer
\brief The GraphicsObjectContainer element allows you to add QGraphicsObjects into Fluid UI elements.
*/
/*!
\internal
\class QmlGraphicsGraphicsObjectContainer
\brief The QmlGraphicsGraphicsObjectContainer class allows you to add QGraphicsObjects into Fluid UI applications.
*/
QML_DEFINE_NOCREATE_TYPE(QGraphicsObject)
QML_DEFINE_TYPE(Qt,4,6,GraphicsObjectContainer,QmlGraphicsGraphicsObjectContainer)
QmlGraphicsGraphicsObjectContainer::QmlGraphicsGraphicsObjectContainer(QmlGraphicsItem *parent)
: QmlGraphicsItem(*new QmlGraphicsGraphicsObjectContainerPrivate, parent)
{
}
QmlGraphicsGraphicsObjectContainer::~QmlGraphicsGraphicsObjectContainer()
{
}
QGraphicsObject *QmlGraphicsGraphicsObjectContainer::graphicsObject() const
{
Q_D(const QmlGraphicsGraphicsObjectContainer);
return d->graphicsObject;
}
/*!
\qmlproperty QGraphicsObject GraphicsObjectContainer::graphicsObject
The QGraphicsObject associated with this element.
*/
void QmlGraphicsGraphicsObjectContainer::setGraphicsObject(QGraphicsObject *object)
{
Q_D(QmlGraphicsGraphicsObjectContainer);
if (object == d->graphicsObject)
return;
//### remove previously set item?
d->setFiltering(false);
d->graphicsObject = object;
if (d->graphicsObject) {
d->graphicsObject->setParentItem(this);
if (d->syncedResize && d->graphicsObject->isWidget()) {
QGraphicsWidget *gw = static_cast<QGraphicsWidget*>(d->graphicsObject);
QSizeF gwSize = gw->size(); //### should we use sizeHint?
QSizeF newSize = gwSize;
if (heightValid())
newSize.setHeight(height());
if (widthValid())
newSize.setWidth(width());
if (gwSize != newSize)
gw->resize(newSize);
gwSize = gw->size();
setImplicitWidth(gwSize.width());
setImplicitHeight(gwSize.height());
d->setFiltering(true);
}
}
}
QVariant QmlGraphicsGraphicsObjectContainer::itemChange(GraphicsItemChange change, const QVariant &value)
{
Q_D(QmlGraphicsGraphicsObjectContainer);
if (change == ItemSceneHasChanged) {
QGraphicsObject *o = d->graphicsObject;
d->graphicsObject = 0;
setGraphicsObject(o);
}
return QmlGraphicsItem::itemChange(change, value);
}
bool QmlGraphicsGraphicsObjectContainer::eventFilter(QObject *watched, QEvent *e)
{
Q_D(QmlGraphicsGraphicsObjectContainer);
if (watched == d->graphicsObject && e->type() == QEvent::GraphicsSceneResize) {
if (d->graphicsObject && d->graphicsObject->isWidget() && d->syncedResize) {
QSizeF newSize = static_cast<QGraphicsWidget*>(d->graphicsObject)->size();
setImplicitWidth(newSize.width());
setImplicitHeight(newSize.height());
}
}
return QmlGraphicsItem::eventFilter(watched, e);
}
/*!
\qmlproperty bool GraphicsObjectContainer::synchronizedResizing
This property determines whether or not the container and graphics object will synchronize their
sizes.
\note This property only applies when wrapping a QGraphicsWidget.
If synchronizedResizing is enabled, the container and widget will
synchronize their sizes as follows.
\list
\o If a size has been set on the container, the widget will be resized to the container.
Any changes in the container's size will be reflected in the widget.
\o \e Otherwise, the container will initially be sized to the preferred size of the widget.
Any changes to the container's size will be reflected in the widget, and any changes to the
widget's size will be reflected in the container.
\endlist
*/
bool QmlGraphicsGraphicsObjectContainer::synchronizedResizing() const
{
Q_D(const QmlGraphicsGraphicsObjectContainer);
return d->syncedResize;
}
void QmlGraphicsGraphicsObjectContainer::setSynchronizedResizing(bool on)
{
Q_D(QmlGraphicsGraphicsObjectContainer);
if (on == d->syncedResize)
return;
d->syncedResize = on;
d->setFiltering(on);
}
void QmlGraphicsGraphicsObjectContainerPrivate::_q_updateSize()
{
if (!graphicsObject || !graphicsObject->isWidget() || !syncedResize)
return;
QGraphicsWidget *gw = static_cast<QGraphicsWidget*>(graphicsObject);
const QSizeF newSize(width, height);
gw->resize(newSize);
//### will respecting the widgets min/max ever get us in trouble? (all other items always
// size to exactly what you tell them)
/*QSizeF constrainedSize = newSize.expandedTo(gw->minimumSize()).boundedTo(gw->maximumSize());
gw->resize(constrainedSize);
if (constrainedSize != newSize) {
setImplicitWidth(constrainedSize.width());
setImplicitHeight(constrainedSize.height());
}*/
}
#include "moc_qmlgraphicsgraphicsobjectcontainer_p.cpp"
QT_END_NAMESPACE
|
