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
|
/*
* checkbox.cpp - check box with read-only option
* Program: kalarm
* Copyright (c) 2002, 2003 by David Jarvie <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "checkbox.moc"
CheckBox::CheckBox(TQWidget* parent, const char* name)
: TQCheckBox(parent, name),
mFocusPolicy(focusPolicy()),
mFocusWidget(0),
mReadOnly(false)
{ }
CheckBox::CheckBox(const TQString& text, TQWidget* parent, const char* name)
: TQCheckBox(text, parent, name),
mFocusPolicy(focusPolicy()),
mFocusWidget(0),
mReadOnly(false)
{ }
/******************************************************************************
* Set the read-only status. If read-only, the checkbox can be toggled by the
* application, but not by the user.
*/
void CheckBox::setReadOnly(bool ro)
{
if ((int)ro != (int)mReadOnly)
{
mReadOnly = ro;
setFocusPolicy(ro ? TQWidget::NoFocus : mFocusPolicy);
if (ro)
clearFocus();
}
}
/******************************************************************************
* Specify a widget to receive focus when the checkbox is clicked on.
*/
void CheckBox::setFocusWidget(TQWidget* w, bool enable)
{
mFocusWidget = w;
mFocusWidgetEnable = enable;
if (w)
connect(this, TQT_SIGNAL(clicked()), TQT_SLOT(slotClicked()));
else
disconnect(this, TQT_SIGNAL(clicked()), this, TQT_SLOT(slotClicked()));
}
/******************************************************************************
* Called when the checkbox is clicked.
* If it is now checked, focus is transferred to any specified focus widget.
*/
void CheckBox::slotClicked()
{
if (mFocusWidget && isChecked())
{
if (mFocusWidgetEnable)
mFocusWidget->setEnabled(true);
mFocusWidget->setFocus();
}
}
/******************************************************************************
* Event handlers to intercept events if in read-only mode.
* Any events which could change the checkbox state are discarded.
*/
void CheckBox::mousePressEvent(TQMouseEvent* e)
{
if (mReadOnly)
{
// Swallow up the event if it's the left button
if (e->button() == Qt::LeftButton)
return;
}
TQCheckBox::mousePressEvent(e);
}
void CheckBox::mouseReleaseEvent(TQMouseEvent* e)
{
if (mReadOnly)
{
// Swallow up the event if it's the left button
if (e->button() == Qt::LeftButton)
return;
}
TQCheckBox::mouseReleaseEvent(e);
}
void CheckBox::mouseMoveEvent(TQMouseEvent* e)
{
if (!mReadOnly)
TQCheckBox::mouseMoveEvent(e);
}
void CheckBox::keyPressEvent(TQKeyEvent* e)
{
if (mReadOnly)
switch (e->key())
{
case TQt::Key_Up:
case TQt::Key_Left:
case TQt::Key_Right:
case TQt::Key_Down:
// Process keys which shift the focus
break;
default:
return;
}
TQCheckBox::keyPressEvent(e);
}
void CheckBox::keyReleaseEvent(TQKeyEvent* e)
{
if (!mReadOnly)
TQCheckBox::keyReleaseEvent(e);
}
|
