File indexing completed on 2024-05-05 03:50:46

 // SPDX-License-Identifier: LGPL-2.1-or-later
 //
 // SPDX-FileCopyrightText: 2013 Mohammed Nafees <nafees.technocool@gmail.com>
 //
 
 #include "NavigationSlider.h"
 
 #include <QPainter>
 #include <QMouseEvent>
 #include <QPixmapCache>
 
 namespace Marble
 {
 
 namespace {
     const int handleImageHeight = 32;
 }
 
 NavigationSlider::NavigationSlider(QWidget *parent) :
     QAbstractSlider( parent ),
     m_handleImagePath( "marble/navigation/navigational_slider_handle" )
 {
     setMouseTracking( true );
 }
 
 NavigationSlider::~NavigationSlider()
 {
     QPixmapCache::remove( "marble/navigation/navigational_slider_groove" );
     QPixmapCache::remove( "marble/navigation/navigational_slider_handle" );
     QPixmapCache::remove( "marble/navigation/navigational_slider_handle_hover" );
     QPixmapCache::remove( "marble/navigation/navigational_slider_handle_press" );
 }
 
 QPixmap NavigationSlider::pixmap( const QString &id )
 {
     QPixmap result;
     if ( !QPixmapCache::find( id, &result ) ) {
         result = QPixmap(QLatin1String(":/") + id + QLatin1String(".png"));
         QPixmapCache::insert( id, result );
     }
     return result;
 }
 
 void NavigationSlider::enterEvent( QEvent * )
 {
     setSliderDown( false );
     if (m_handleImagePath != QLatin1String("marble/navigation/navigational_slider_handle_hover")) {
         m_handleImagePath = "marble/navigation/navigational_slider_handle_hover";
         repaint();
     }
 }
 
 void NavigationSlider::mouseMoveEvent( QMouseEvent *mouseEvent )
 {
     if ( !isSliderDown() && mouseEvent->buttons() & Qt::LeftButton ) {
         setSliderDown( true );
     }
     if ( isSliderDown() ) {
         qreal const fraction = ( mouseEvent->pos().y() - handleImageHeight/2 ) / qreal ( height() - handleImageHeight );
         int v = ( int ) minimum() + ( ( maximum() - minimum() ) ) * ( 1 - fraction );
         setValue( v );
         repaint();
     }
 }
 
 void NavigationSlider::mousePressEvent( QMouseEvent * )
 {
     setSliderDown( true );
     if (m_handleImagePath != QLatin1String("marble/navigation/navigational_slider_handle_press")) {
         m_handleImagePath = "marble/navigation/navigational_slider_handle_press";
         repaint();
     }
 }
 
 void NavigationSlider::mouseReleaseEvent( QMouseEvent * )
 {
     setSliderDown( false );
     if (m_handleImagePath != QLatin1String("marble/navigation/navigational_slider_handle_hover")) {
         m_handleImagePath = "marble/navigation/navigational_slider_handle_hover";
         repaint();
     }
 }
 
 void NavigationSlider::leaveEvent( QEvent * )
 {
     setSliderDown( false );
     if (m_handleImagePath != QLatin1String("marble/navigation/navigational_slider_handle")) {
         m_handleImagePath = "marble/navigation/navigational_slider_handle";
         repaint();
     }
 }
 
 void NavigationSlider::repaint()
 {
     emit repaintNeeded();
 }
 
 void NavigationSlider::paintEvent( QPaintEvent * )
 {
     QPainter painter( this );
     for ( int y = 0; y <= 160; y+=10 ) {
         painter.drawPixmap( 0, y, pixmap( "marble/navigation/navigational_slider_groove" ) );
 
     }
     qreal const fraction = ( value() - minimum() ) / qreal( maximum() - minimum() );
     int const y = ( height() - handleImageHeight ) * ( 1 - fraction );
     painter.drawPixmap( 0, y, pixmap( m_handleImagePath ) );
     painter.end();
 }
 
 }
 
 #include "moc_NavigationSlider.cpp"