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/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This 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 software 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, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/
#include "BaseToolTipWidget.h"
#include "Debug.h"
#include "GridLayout.h"
#include "Singleton.h"
#include "TimeStamp.h"
#include "GridLayoutItem.h"
#include "XmlOptions.h"
#include <QApplication>
#include <QDesktopWidget>
#include <QFrame>
#include <QLayout>
#include <QPainter>
#include <QStyle>
#include <QStyleOptionFrame>
#include <QToolTip>
//_______________________________________________________
BaseToolTipWidget::BaseToolTipWidget( QWidget* parent ):
QWidget( parent, Qt::ToolTip | Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint ),
Counter( "BaseToolTipWidget" )
{
Debug::Throw( "BaseToolTipWidget::BaseToolTipWidget.\n" );
setAttribute( Qt::WA_TranslucentBackground, true );
// event filter on parent
if( parent ) parent->installEventFilter( this );
// change palete
setPalette( QToolTip::palette() );
setBackgroundRole( QPalette::ToolTipBase );
setForegroundRole( QPalette::ToolTipText );
// configuration
connect( Base::Singleton::get().application(), SIGNAL(configurationChanged()), SLOT(_updateConfiguration()) );
_updateConfiguration();
}
//_____________________________________________
void BaseToolTipWidget::setEnabled( bool value )
{
Debug::Throw( "BaseToolTipWidget::setEnabled.\n" );
if( enabled_ == value ) return;
enabled_ = value;
if( !enabled_ )
{
if( isVisible() ) hide();
timer_.stop();
}
}
//_______________________________________________________
bool BaseToolTipWidget::eventFilter( QObject* object, QEvent* event )
{
if( object != parent() ) return QWidget::eventFilter( object, event );
switch( event->type() )
{
case QEvent::Leave:
case QEvent::HoverLeave:
hide();
break;
default: break;
}
return QWidget::eventFilter( object, event );
}
//_______________________________________________________
void BaseToolTipWidget::setVisible( bool visible )
{
Debug::Throw( "BaseToolTipWidget::hide.\n" );
timer_.stop();
if( !visible )
{
if( isVisible() )
{ hiddenTimer_.start( 200, this ); }
} else {
// check mouse is still in relevant rect
if( !_checkMousePosition() ) return;
// adjust position and show
_adjustPosition();
}
QWidget::setVisible( visible );
}
//_______________________________________________________
void BaseToolTipWidget::showDelayed( int delay )
{
if( !enabled_ ) return;
if( hiddenTimer_.isActive() )
{
timer_.stop();
_adjustPosition();
QWidget::show();
} else {
if( isVisible() ) hide();
timer_.start( delay >= 0 ? delay:defaultDelay_, this );
}
return;
}
//_______________________________________________________
void BaseToolTipWidget::paintEvent( QPaintEvent* event )
{
QPainter painter( this );
painter.setClipRegion( event->region() );
QStyleOptionFrame opt;
opt.init(this);
style()->drawPrimitive(QStyle::PE_PanelTipLabel, &opt, &painter, this );
return QWidget::paintEvent( event );
}
//_______________________________________________________
void BaseToolTipWidget::mousePressEvent( QMouseEvent* event )
{
hide();
return QWidget::mousePressEvent( event );
}
//_____________________________________________
void BaseToolTipWidget::timerEvent( QTimerEvent* event )
{
if( event->timerId() == timer_.timerId() )
{
timer_.stop();
show();
return;
} else if( event->timerId() == hiddenTimer_.timerId() ) {
hiddenTimer_.stop();
return;
} else return QWidget::timerEvent( event );
}
//_______________________________________________________
bool BaseToolTipWidget::_checkMousePosition() const
{ return rect_.contains( QCursor::pos() ); }
//_______________________________________________________
void BaseToolTipWidget::_adjustPosition()
{
// get tooltip size
adjustSize();
const QSize size( sizeHint() );
// desktop size
QDesktopWidget* desktop( qApp->desktop() );
QRect desktopGeometry( desktop->screenGeometry( desktop->screenNumber( parentWidget() ) ) );
// set geometry
int top(0);
int left(0);
const int margin = 5;
if( preferredPosition_ == Position::Top || preferredPosition_ == Position::Bottom )
{
left = followMouse_ ? QCursor::pos().x():rect_.left() + ( rect_.width() - size.width() )/2;
left = qMax( left, desktopGeometry.left() );
left = qMin( left, desktopGeometry.right() - size.width() );
if( preferredPosition_ == Position::Bottom )
{
top = rect_.bottom() + margin;
if( top > desktopGeometry.bottom() - size.height() ) top = rect_.top() - margin - size.height();
} else {
top = rect_.top() - margin - size.height();
if( top < desktopGeometry.top() ) top = rect_.bottom() + margin;
}
} else {
top = followMouse_ ? QCursor::pos().y():rect_.top() + ( rect_.height() - size.height() )/2;
top = qMax( top, desktopGeometry.top() );
top = qMin( top, desktopGeometry.bottom() - size.height() );
if( preferredPosition_ == Position::Right )
{
left = rect_.right()+margin;
if( left > desktopGeometry.right() - size.width() ) left = rect_.left() - margin - size.width();
} else {
left = rect_.left() - margin - size.width();
if( left < desktopGeometry.left() ) left = rect_.right()+margin;
}
}
move( QPoint( left, top ) );
}
//_____________________________________________
void BaseToolTipWidget::_updateConfiguration()
{
Debug::Throw( "BaseToolTipWidget::_updateConfiguration.\n" );
if( XmlOptions::get().contains( "SHOW_TOOLTIPS" ) ) setEnabled( XmlOptions::get().get<bool>( "SHOW_TOOLTIPS" ) );
if( XmlOptions::get().contains( "TOOLTIP_DELAY" ) ) setDefaultDelay( XmlOptions::get().get<int>( "TOOLTIP_DELAY" ) );
}
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