/*************************************************************************
* Copyright (C) 2014 by Hugo Pereira Da Costa <hugo.pereira@free.fr> *
* *
* 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 "adwaitascrollbardata.h"
#include <QHoverEvent>
#include <QScrollBar>
#include <QStyleOptionSlider>
Q_GUI_EXPORT QStyleOptionSlider qt_qscrollbarStyleOption(QScrollBar*);
namespace Adwaita
{
//______________________________________________
ScrollBarData::ScrollBarData( QObject* parent, QWidget* target, int duration ):
WidgetStateData( parent, target, duration ),
_position( -1, -1 )
{
target->installEventFilter( this );
_addLineData._animation = new Animation( duration, this );
_subLineData._animation = new Animation( duration, this );
_grooveData._animation = new Animation( duration, this );
connect( addLineAnimation().data(), SIGNAL(finished()), SLOT(clearAddLineRect()) );
connect( subLineAnimation().data(), SIGNAL(finished()), SLOT(clearSubLineRect()) );
// setup animation
setupAnimation( addLineAnimation(), "addLineOpacity" );
setupAnimation( subLineAnimation(), "subLineOpacity" );
setupAnimation( grooveAnimation(), "grooveOpacity" );
}
//______________________________________________
bool ScrollBarData::eventFilter( QObject* object, QEvent* event )
{
if( object != target().data() )
{ return WidgetStateData::eventFilter( object, event ); }
// check event type
switch( event->type() )
{
case QEvent::HoverEnter:
setGrooveHovered(true);
grooveAnimation().data()->setDirection( Animation::Forward );
if( !grooveAnimation().data()->isRunning() ) grooveAnimation().data()->start();
case QEvent::HoverMove:
hoverMoveEvent( object, event );
break;
case QEvent::HoverLeave:
setGrooveHovered(false);
grooveAnimation().data()->setDirection( Animation::Backward );
if( !grooveAnimation().data()->isRunning() ) grooveAnimation().data()->start();
hoverLeaveEvent( object, event );
break;
default: break;
}
return WidgetStateData::eventFilter( object, event );
}
//______________________________________________
const Animation::Pointer& ScrollBarData::animation( QStyle::SubControl subcontrol ) const
{
switch( subcontrol )
{
default:
case QStyle::SC_ScrollBarSlider:
return animation();
case QStyle::SC_ScrollBarAddLine:
return addLineAnimation();
case QStyle::SC_ScrollBarSubLine:
return subLineAnimation();
case QStyle::SC_ScrollBarGroove:
return grooveAnimation();
}
}
//______________________________________________
qreal ScrollBarData::opacity( QStyle::SubControl subcontrol ) const
{
switch( subcontrol )
{
default:
case QStyle::SC_ScrollBarSlider:
return opacity();
case QStyle::SC_ScrollBarAddLine:
return addLineOpacity();
case QStyle::SC_ScrollBarSubLine:
return subLineOpacity();
case QStyle::SC_ScrollBarGroove:
return grooveOpacity();
}
}
//______________________________________________
void ScrollBarData::hoverMoveEvent( QObject* object, QEvent* event )
{
// try cast object to scrollbar
QScrollBar* scrollBar( qobject_cast<QScrollBar*>( object ) );
if( !scrollBar || scrollBar->isSliderDown() ) return;
// retrieve scrollbar option
QStyleOptionSlider opt( qt_qscrollbarStyleOption( scrollBar ) );
// cast event
QHoverEvent *hoverEvent = static_cast<QHoverEvent*>(event);
QStyle::SubControl hoverControl = scrollBar->style()->hitTestComplexControl(QStyle::CC_ScrollBar, &opt, hoverEvent->pos(), scrollBar);
// update hover state
updateAddLineArrow( hoverControl );
updateSubLineArrow( hoverControl );
// store position
_position = hoverEvent->pos();
}
//______________________________________________
void ScrollBarData::hoverLeaveEvent( QObject*, QEvent* )
{
// reset hover state
updateSubLineArrow( QStyle::SC_None );
updateAddLineArrow( QStyle::SC_None );
// reset mouse position
_position = QPoint( -1, -1 );
}
//_____________________________________________________________________
void ScrollBarData::updateSubLineArrow( QStyle::SubControl hoverControl )
{
if( hoverControl == QStyle::SC_ScrollBarSubLine )
{
if( !subLineArrowHovered() )
{
setSubLineArrowHovered( true );
if( enabled() )
{
subLineAnimation().data()->setDirection( Animation::Forward );
if( !subLineAnimation().data()->isRunning() ) subLineAnimation().data()->start();
} else setDirty();
}
} else {
if( subLineArrowHovered() )
{
setSubLineArrowHovered( false );
if( enabled() )
{
subLineAnimation().data()->setDirection( Animation::Backward );
if( !subLineAnimation().data()->isRunning() ) subLineAnimation().data()->start();
} else setDirty();
}
}
}
//_____________________________________________________________________
void ScrollBarData::updateAddLineArrow( QStyle::SubControl hoverControl )
{
if( hoverControl == QStyle::SC_ScrollBarAddLine )
{
if( !addLineArrowHovered() )
{
setAddLineArrowHovered( true );
if( enabled() )
{
addLineAnimation().data()->setDirection( Animation::Forward );
if( !addLineAnimation().data()->isRunning() ) addLineAnimation().data()->start();
} else setDirty();
}
} else {
if( addLineArrowHovered() )
{
setAddLineArrowHovered( false );
if( enabled() )
{
addLineAnimation().data()->setDirection( Animation::Backward );
if( !addLineAnimation().data()->isRunning() ) addLineAnimation().data()->start();
} else setDirty();
}
}
}
}