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//////////////////////////////////////////////////////////////////////////////
// oxygenprogressbar.cpp
// data container for progressbar animations
// -------------------
//
// Copyright (c) 2009 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//////////////////////////////////////////////////////////////////////////////
#include <assert.h>
#include "progressbardata.h"
//______________________________________________
ProgressBarData::ProgressBarData( QObject* parent, QWidget* target, int duration ):
GenericData( parent, target, duration ),
startValue_(0),
endValue_(0) {
target->installEventFilter( this );
// set animation curve shape
animation().data()->setEasingCurve( QEasingCurve::InOutQuad );
// make sure target is a progressbar and store relevant values
QProgressBar* progress = qobject_cast<QProgressBar*>( target );
Q_ASSERT( progress );
setStartValue( progress->value() );
setEndValue( progress->value() );
// setup connections
connect( target, SIGNAL( valueChanged( int ) ), SLOT( valueChanged( int ) ) );
}
//______________________________________________
bool ProgressBarData::eventFilter( QObject* object, QEvent* event ) {
if ( !( enabled() && object && object == target().data() ) ) return AnimationData::eventFilter( object, event );
switch ( event->type() ) {
case QEvent::Show: {
// reset start and end value
QProgressBar* progress = static_cast<QProgressBar*>( target().data() );
setStartValue( progress->value() );
setEndValue( progress->value() );
break;
}
case QEvent::Hide: {
if ( animation().data()->isRunning() ) {
animation().data()->stop();
}
break;
}
default:
break;
}
return AnimationData::eventFilter( object, event );
}
//______________________________________________
void ProgressBarData::valueChanged( int value ) {
// do nothing if not enabled
if ( !enabled() ) return;
// do nothing if progress is invalid
QProgressBar* progress = static_cast<QProgressBar*>( target().data() );
if ( !( progress && progress->maximum() != progress->minimum() ) ) return;
// update start and end values
bool isRunning( animation().data()->isRunning() );
if ( isRunning ) {
// in case next value arrives while animation is running,
// end animation, set value immediately
// and trigger target update. This increases responsiveness of progressbars
setStartValue( value );
setEndValue( value );
animation().data()->stop();
setOpacity(0);
if ( target() ) target().data()->update();
return;
}
setStartValue( endValue() );
setEndValue( value );
// start animation only if target is enabled, visible, not running,
// and if end and start values are different enough
// (with end value being larger than start value)
if ( !(target() && target().data()->isEnabled() && target().data()->isVisible()) ) return;
if ( isRunning || endValue() - startValue() < 2 ) return;
animation().data()->start();
}
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