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/*
*
* $Id: k3bpushbutton.cpp 619556 2007-01-03 17:38:12Z trueg $
* Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* 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.
* See the file "COPYING" for the exact licensing terms.
*/
#include "k3bpushbutton.h"
#include <qtimer.h>
#include <qpopupmenu.h>
#include <qevent.h>
#include <kglobalsettings.h>
#include <kapplication.h>
class K3bPushButton::Private
{
public:
Private()
: popupTimer(0) {
}
QTimer* popupTimer;
QPoint mousePressPos;
};
K3bPushButton::K3bPushButton( QWidget* parent, const char* name )
: KPushButton( parent, name )
{
d = new Private();
installEventFilter(this);
}
K3bPushButton::K3bPushButton( const QString& text, QWidget* parent, const char* name )
: KPushButton( text, parent, name )
{
d = new Private();
installEventFilter(this);
}
K3bPushButton::K3bPushButton( const QIconSet& icon, const QString& text,
QWidget* parent, const char* name )
: KPushButton( icon, text, parent, name )
{
d = new Private();
installEventFilter(this);
}
K3bPushButton::K3bPushButton( const KGuiItem& item, QWidget* parent, const char* name )
: KPushButton( item, parent, name )
{
d = new Private();
installEventFilter(this);
}
K3bPushButton::~K3bPushButton()
{
delete d;
}
void K3bPushButton::setDelayedPopupMenu( QPopupMenu* popup )
{
if( !d->popupTimer ) {
d->popupTimer = new QTimer( this );
connect( d->popupTimer, SIGNAL(timeout()), this, SLOT(slotDelayedPopup()) );
}
setPopup( popup );
// we need to do the popup handling ourselves so we cheat a little
// QPushButton connects a popup slot to the pressed signal which we disconnect here
disconnect( this );
}
bool K3bPushButton::eventFilter( QObject* o, QEvent* ev )
{
if( dynamic_cast<K3bPushButton*>(o) == this ) {
// Popup the menu when the left mousebutton is pressed and the mouse
// is moved by a small distance.
if( popup() ) {
if( ev->type() == QEvent::MouseButtonPress ) {
QMouseEvent* mev = static_cast<QMouseEvent*>(ev);
d->mousePressPos = mev->pos();
d->popupTimer->start( QApplication::startDragTime() );
}
else if( ev->type() == QEvent::MouseMove ) {
QMouseEvent* mev = static_cast<QMouseEvent*>(ev);
if( ( mev->pos() - d->mousePressPos).manhattanLength() > KGlobalSettings::dndEventDelay() ) {
d->popupTimer->stop();
slotDelayedPopup();
return true;
}
}
}
}
return KPushButton::eventFilter( o, ev );
}
void K3bPushButton::slotDelayedPopup()
{
d->popupTimer->stop();
if( isDown() ) {
// popup the menu.
// this has been taken from the QPushButton code
if( mapToGlobal( QPoint( 0, rect().bottom() ) ).y() + popup()->sizeHint().height() <= qApp->desktop()->height() )
popup()->exec( mapToGlobal( rect().bottomLeft() ) );
else
popup()->exec( mapToGlobal( rect().topLeft() - QPoint( 0, popup()->sizeHint().height() ) ) );
setDown( false );
}
}
#include "k3bpushbutton.moc"
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