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/*
* label.cpp - label with radiobutton buddy option
* Program: kalarm
* Copyright (C) 2004 by David Jarvie <software@astrojar.org.uk>
*
* 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 "kalarm.h"
#include <qradiobutton.h>
#include "label.moc"
Label::Label(QWidget* parent, const char* name, WFlags f)
: QLabel(parent, name, f),
mRadioButton(0),
mFocusWidget(0)
{ }
Label::Label(const QString& text, QWidget* parent, const char* name, WFlags f)
: QLabel(text, parent, name, f),
mRadioButton(0),
mFocusWidget(0)
{ }
Label::Label(QWidget* buddy, const QString& text, QWidget* parent, const char* name, WFlags f)
: QLabel(buddy, text, parent, name, f),
mRadioButton(0),
mFocusWidget(0)
{ }
/******************************************************************************
* Set a buddy widget.
* If it (or its focus proxy) is a radio button, create a focus widget.
* When the accelerator key is pressed, the focus widget then receives focus.
* That event triggers the selection of the radio button.
*/
void Label::setBuddy(QWidget* bud)
{
if (mRadioButton)
disconnect(mRadioButton, SIGNAL(destroyed()), this, SLOT(buddyDead()));
QWidget* w = bud;
if (w)
{
while (w->focusProxy())
w = w->focusProxy();
if (!w->inherits("QRadioButton"))
w = 0;
}
if (!w)
{
// The buddy widget isn't a radio button
QLabel::setBuddy(bud);
delete mFocusWidget;
mFocusWidget = 0;
mRadioButton = 0;
}
else
{
// The buddy widget is a radio button, so set a different buddy
if (!mFocusWidget)
mFocusWidget = new LabelFocusWidget(this);
QLabel::setBuddy(mFocusWidget);
mRadioButton = (QRadioButton*)bud;
connect(mRadioButton, SIGNAL(destroyed()), this, SLOT(buddyDead()));
}
}
void Label::buddyDead()
{
delete mFocusWidget;
mFocusWidget = 0;
mRadioButton = 0;
}
/******************************************************************************
* Called when focus is transferred to the label's special focus widget.
* Transfer focus to the radio button and select it.
*/
void Label::activated()
{
if (mFocusWidget && mRadioButton)
{
mRadioButton->setFocus();
mRadioButton->setChecked(true);
}
}
/*=============================================================================
* Class: LabelFocusWidget
=============================================================================*/
LabelFocusWidget::LabelFocusWidget(QWidget* parent, const char* name)
: QWidget(parent, name)
{
setFocusPolicy(ClickFocus);
setFixedSize(QSize(1,1));
}
void LabelFocusWidget::focusInEvent(QFocusEvent*)
{
Label* parent = (Label*)parentWidget();
parent->activated();
}
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