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tomahawk/src/libtomahawk/widgets/AnimatedCounterLabel.cpp

107 lines
3.3 KiB
C++

/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
*
* Copyright 2010-2011, Christian Muehlhaeuser <muesli@tomahawk-player.org>
*
* Tomahawk 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 3 of the License, or
* (at your option) any later version.
*
* Tomahawk 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 Tomahawk. If not, see <http://www.gnu.org/licenses/>.
*/
#include "AnimatedCounterLabel.h"
AnimatedCounterLabel::AnimatedCounterLabel(QWidget* parent, Qt::WindowFlags f)
: QLabel( parent, f )
, m_displayed( 0 )
, m_val( 0 )
, m_oldval( 0 )
, m_format( "%L1" )
{
connect( &m_timer, SIGNAL( frameChanged( int ) ), SLOT( frame( int ) ) );
connect( &m_timer, SIGNAL( finished() ), SLOT( showDiff() ) );
}
void AnimatedCounterLabel::setFormat(const QString& f)
{
m_format = f;
setText( m_format.arg( m_displayed ) );
}
void AnimatedCounterLabel::setVisible(bool b)
{
QLabel::setVisible( b );
if ( !m_diff.isNull() )
m_diff.data()->setVisible( b );
}
void AnimatedCounterLabel::frame(int f)
{
m_displayed = f;
QLabel::setText( m_format.arg( m_displayed ) );
QLabel::update();
}
void AnimatedCounterLabel::setVal(unsigned int v)
{
if( v == m_val )
return;
m_oldval = m_val;
m_val = v;
m_timer.stop();
unsigned int dur = 1000;
unsigned int r = abs( v - m_oldval );
if( r > 1000 ) dur = 1500;
else if( r > 10000 ) dur = 2000;
else if( r > 25000 ) dur = 2250;
else if( r > 50000 ) dur = 2750;
else if( r > 100000 ) dur = 3000;
else if( r > 500000 ) dur = 5000;
m_timer.setDuration( dur );
m_timer.setFrameRange( m_displayed, v );
m_timer.setEasingCurve( QEasingCurve( QEasingCurve::OutCubic ) );
m_timer.start();
}
void AnimatedCounterLabel::showDiff()
{
int differ = m_val - m_oldval;
m_diff = new QLabel( QString("%1 %L2" ).arg( differ > 0 ? "+" : "" )
.arg( (int)m_val - (int)m_oldval ),
this->parentWidget() );
m_diff.data()->setStyleSheet( "font-size:9px; color:grey;" );
m_diff.data()->move( QPoint( this->pos().x(), this->pos().y() ) );
QPropertyAnimation* a = new QPropertyAnimation( m_diff.data(), "pos" );
a->setEasingCurve( QEasingCurve( QEasingCurve::InQuad ) );
a->setStartValue( m_diff.data()->pos() + QPoint( 0, -10 ) );
a->setEndValue( QPoint( m_diff.data()->pos().x(), m_diff.data()->pos().y() - 25 ) );
a->setDuration( 1000 );
// qDebug() << "ANIMATING DIFF:" << a->startValue() << a->endValue();
connect( a, SIGNAL( finished() ), m_diff.data(), SLOT( hide() ) );
connect( a, SIGNAL( finished() ), m_diff.data(), SLOT( deleteLater() ) );
connect( a, SIGNAL( finished() ), a, SLOT( deleteLater() ) );
m_diff.data()->show();
m_diff.data()->setVisible( this->isVisible() );
a->start();
}