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/**
* Copyright (c) 2003-2009 Mark Kretschmann <kretschmann@kde.org>
* Copyright (c) 2005 Gabor Lehel <illissius@gmail.com>
* Copyright (c) 2008 Dan Meltzer <parallelgrapefruit@gmail.com>
* Copyright (c) 2021 Michael Pyne <mpyne@kde.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.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "slider.h"
#include <KLocalizedString>
#include <QAction>
#include <QContextMenuEvent>
#include <QMenu>
#include <QPainter>
#include <QStyle>
#include <QStyleOptionSlider>
#include "playermanager.h"
#include "svghandler.h"
Slider::Slider( Qt::Orientation orientation, uint max, QWidget *parent )
: QSlider( orientation, parent )
{
setMouseTracking( true );
setRange( 0, max );
setAttribute( Qt::WA_NoMousePropagation, true );
setAttribute( Qt::WA_Hover, true );
if ( orientation == Qt::Vertical )
{
setInvertedAppearance( true );
setInvertedControls( true );
}
}
QRectF
Slider::sliderHandleRect( const QRectF &slider, qreal percent ) const
{
QRectF rect;
const bool inverse = ( orientation() == Qt::Horizontal ) ?
( invertedAppearance() != (layoutDirection() == Qt::RightToLeft) ) :
( !invertedAppearance() );
if(m_usingCustomStyle)
{
rect = The::svgHandler()->sliderKnobRect( slider, percent, inverse );
}
else
{
if ( inverse )
percent = 1.0 - percent;
const int handleSize = style()->pixelMetric( QStyle::PM_SliderControlThickness );
rect = QRect( 0, 0, handleSize, handleSize );
rect.moveTo( slider.x() + qRound( ( slider.width() - handleSize ) * percent ), slider.y() + 1 );
}
return rect;
}
void
Slider::wheelEvent( QWheelEvent *e )
{
if( orientation() == Qt::Vertical )
{
// Will be handled by the parent widget
e->ignore();
return;
}
// Position Slider (horizontal)
// only used for progress slider now!
int step = e->angleDelta().y() * 24;
int nval = value() + step;
nval = qMax(nval, minimum());
nval = qMin(nval, maximum());
QSlider::setValue( nval );
}
void Slider::paintCustomSlider( QPainter *p )
{
qreal percent = 0.0;
if ( maximum() > minimum() )
percent = ((qreal)value()) / ( maximum() - minimum() );
QStyleOptionSlider opt;
initStyleOption( &opt );
if ( this->isSliderDown() ||
( underMouse() && sliderHandleRect( rect(), percent ).contains( mapFromGlobal(QCursor::pos()) ) ) )
{
opt.activeSubControls |= QStyle::SC_SliderHandle;
}
The::svgHandler()->setDevicePixelRatioF(devicePixelRatioF());
The::svgHandler()->paintCustomSlider( p, &opt, percent );
}
//////////////////////////////////////////////////////////////////////////////////////////
/// CLASS VolumeSlider
//////////////////////////////////////////////////////////////////////////////////////////
VolumeSlider::VolumeSlider( uint max, QWidget *parent, bool customStyle )
: Slider( customStyle ? Qt::Horizontal : Qt::Vertical, max, parent )
{
m_usingCustomStyle = customStyle;
setFocusPolicy( Qt::NoFocus );
setInvertedAppearance( false );
setInvertedControls( false );
connect(this, &QAbstractSlider::valueChanged, this, &VolumeSlider::emitVolumeChanged);
}
void
VolumeSlider::contextMenuEvent( QContextMenuEvent *e )
{
QMenu menu;
menu.setTitle( i18n( "Volume" ) );
menu.addAction( i18n( "100%" ) )->setData( 100 );
menu.addAction( i18n( "80%" ) )->setData( 80 );
menu.addAction( i18n( "60%" ) )->setData( 60 );
menu.addAction( i18n( "40%" ) )->setData( 40 );
menu.addAction( i18n( "20%" ) )->setData( 20 );
menu.addAction( i18n( "0%" ) )->setData( 0 );
QAction* a = menu.exec( mapToGlobal( e->pos() ) );
if( a )
{
const int n = a->data().toInt();
if( n >= 0 )
{
this->setValue( n );
}
}
}
void
VolumeSlider::wheelEvent( QWheelEvent *e )
{
static const int volumeSensitivity = 30;
const uint step = e->angleDelta().y() / volumeSensitivity;
this->setValue( this->value() + step );
}
void
VolumeSlider::paintEvent( QPaintEvent *event )
{
if( m_usingCustomStyle )
{
QPainter p( this );
paintCustomSlider( &p );
p.end();
return;
}
Slider::paintEvent( event );
}
void
VolumeSlider::emitVolumeChanged( int value )
{
emit volumeChanged( float( value ) / float( maximum() ) );
}
//////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////// TIMESLIDER ////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////
TimeSlider::TimeSlider( QWidget *parent, PlayerManager *player )
: Slider( Qt::Horizontal, 0, parent )
, m_player( player )
, m_knobX( 0.0 )
{
m_usingCustomStyle = true;
setFocusPolicy( Qt::NoFocus );
}
void
TimeSlider::paintEvent( QPaintEvent *pe )
{
QPainter p( this );
p.setClipRegion( pe->region() );
paintCustomSlider( &p );
p.end();
}
void TimeSlider::sliderChange( SliderChange change )
{
if ( change == SliderValueChange || change == SliderRangeChange )
{
int oldKnobX = m_knobX;
qreal percent = 0.0;
if ( maximum() > minimum() )
percent = ((qreal)value()) / ( maximum() - minimum() );
QRectF knob = sliderHandleRect( rect(), percent );
m_knobX = knob.x();
if (oldKnobX < m_knobX)
update( oldKnobX, knob.y(), knob.right() + 1 - oldKnobX, knob.height() );
else if (oldKnobX > m_knobX)
update( m_knobX, knob.y(), oldKnobX + knob.width(), knob.height() );
}
else
Slider::sliderChange( change ); // calls update()
}
void TimeSlider::showEvent(QShowEvent *)
{
connect(m_player, &PlayerManager::tick, this, &TimeSlider::setValue);
}
void TimeSlider::hideEvent(QHideEvent *)
{
disconnect(m_player);
}
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