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
|
/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 QT_NO_QCOLUMNVIEW
#include "qcolumnviewgrip_p.h"
#include <qstyleoption.h>
#include <qpainter.h>
#include <qbrush.h>
#include <qevent.h>
#include <qdebug.h>
QT_BEGIN_NAMESPACE
/*
\internal
class QColumnViewGrip
QColumnViewGrip is created to go inside QAbstractScrollArea's corner.
When the mouse it moved it will resize the scroll area and emit's a signal.
*/
/*
\internal
\fn void QColumnViewGrip::gripMoved()
Signal that is emitted when the grip moves the parent widget.
*/
/*!
Creates a new QColumnViewGrip with the given \a parent to view a model.
Use setModel() to set the model.
*/
QColumnViewGrip::QColumnViewGrip(QWidget *parent)
: QWidget(*new QColumnViewGripPrivate, parent, 0)
{
#ifndef QT_NO_CURSOR
setCursor(Qt::SplitHCursor);
#endif
}
/*!
\internal
*/
QColumnViewGrip::QColumnViewGrip(QColumnViewGripPrivate & dd, QWidget *parent, Qt::WFlags f)
: QWidget(dd, parent, f)
{
}
/*!
Destroys the view.
*/
QColumnViewGrip::~QColumnViewGrip()
{
}
/*!
Attempt to resize the parent object by \a offset
returns the amount of offset that it was actually able to resized
*/
int QColumnViewGrip::moveGrip(int offset)
{
QWidget *parentWidget = (QWidget*)parent();
// first resize the parent
int oldWidth = parentWidget->width();
int newWidth = oldWidth;
if (isRightToLeft())
newWidth -= offset;
else
newWidth += offset;
newWidth = qMax(parentWidget->minimumWidth(), newWidth);
parentWidget->resize(newWidth, parentWidget->height());
// Then have the view move the widget
int realOffset = parentWidget->width() - oldWidth;
int oldX = parentWidget->x();
if (realOffset != 0)
emit gripMoved(realOffset);
if (isRightToLeft())
realOffset = -1 * (oldX - parentWidget->x());
return realOffset;
}
/*!
\reimp
*/
void QColumnViewGrip::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
QStyleOption opt;
opt.initFrom(this);
style()->drawControl(QStyle::CE_ColumnViewGrip, &opt, &painter, this);
event->accept();
}
/*!
\reimp
Resize the parent window to the sizeHint
*/
void QColumnViewGrip::mouseDoubleClickEvent(QMouseEvent *event)
{
Q_UNUSED(event);
QWidget *parentWidget = (QWidget*)parent();
int offset = parentWidget->sizeHint().width() - parentWidget->width();
if (isRightToLeft())
offset *= -1;
moveGrip(offset);
event->accept();
}
/*!
\reimp
Begin watching for mouse movements
*/
void QColumnViewGrip::mousePressEvent(QMouseEvent *event)
{
Q_D(QColumnViewGrip);
d->originalXLocation = event->globalX();
event->accept();
}
/*!
\reimp
Calculate the movement of the grip and moveGrip() and emit gripMoved
*/
void QColumnViewGrip::mouseMoveEvent(QMouseEvent *event)
{
Q_D(QColumnViewGrip);
int offset = event->globalX() - d->originalXLocation;
d->originalXLocation = moveGrip(offset) + d->originalXLocation;
event->accept();
}
/*!
\reimp
Stop watching for mouse movements
*/
void QColumnViewGrip::mouseReleaseEvent(QMouseEvent *event)
{
Q_D(QColumnViewGrip);
d->originalXLocation = -1;
event->accept();
}
/*
* private object implementation
*/
QColumnViewGripPrivate::QColumnViewGripPrivate()
: QWidgetPrivate(),
originalXLocation(-1)
{
}
QT_END_NAMESPACE
#endif // QT_NO_QCOLUMNVIEW
|
