File indexing completed on 2024-04-28 03:50:22

 // SPDX-License-Identifier: LGPL-2.1-or-later
 //
 // SPDX-FileCopyrightText: 2010 Dennis Nienhüser <nienhueser@kde.org>
 // SPDX-FileCopyrightText: 2010, 2011 Bernhard Beschow <bbeschow@cs.tu-berlin.de>
 //
 
 #include "ProgressFloatItem.h"
 
 #include "MarbleDebug.h"
 #include "MarbleDirs.h"
 #include "MarbleModel.h"
 #include "MarbleWidget.h"
 #include "ViewportParams.h"
 #include "HttpDownloadManager.h"
 
 #include <QRect>
 #include <QColor>
 #include <QPaintDevice>
 #include <QPainter>
 #include <QPainterPath>
 #include <QThread>
 
 namespace Marble
 {
 
 ProgressFloatItem::ProgressFloatItem( const MarbleModel *marbleModel )
     : AbstractFloatItem( marbleModel, QPointF( -10.5, -150.5 ), QSizeF( 40.0, 40.0 ) ),
       m_isInitialized( false ),
       m_totalJobs( 0 ),
       m_completedJobs ( 0 ),
       m_completed( 1 ),
       m_progressHideTimer(),
       m_progressShowTimer(),
       m_active( false ),
       m_fontSize( 0 ),
       m_repaintTimer()
 {
     // This timer is responsible to activate the automatic display with a small delay
     m_progressShowTimer.setInterval( 250 );
     m_progressShowTimer.setSingleShot( true );
     connect( &m_progressShowTimer, SIGNAL(timeout()), this, SLOT(show()) );
 
     // This timer is responsible to hide the automatic display when downloads are finished
     m_progressHideTimer.setInterval( 750 );
     m_progressHideTimer.setSingleShot( true );
     connect( &m_progressHideTimer, SIGNAL(timeout()), this, SLOT(hideProgress()) );
 
     // Repaint timer
     m_repaintTimer.setSingleShot( true );
     m_repaintTimer.setInterval( 1000 );
     connect( &m_repaintTimer, SIGNAL(timeout()), this, SIGNAL(repaintNeeded()) );
 
     // Plugin is enabled by default
     setEnabled( true );
 
     // Plugin is visible by default on devices with small screens only
     setVisible( MarbleGlobal::getInstance()->profiles() & MarbleGlobal::SmallScreen );    
 }
 
 ProgressFloatItem::~ProgressFloatItem ()
 {
     // nothing to do
 }
 
 QStringList ProgressFloatItem::backendTypes() const
 {
     return QStringList(QStringLiteral("progress"));
 }
 
 QString ProgressFloatItem::name() const
 {
     return tr( "Download Progress Indicator" );
 }
 
 QString ProgressFloatItem::guiString() const
 {
     return tr( "&Download Progress" );
 }
 
 QString ProgressFloatItem::nameId() const
 {
     return QStringLiteral("progress");
 }
 
 QString ProgressFloatItem::version() const
 {
     return QStringLiteral("1.0");
 }
 
 QString ProgressFloatItem::description() const
 {
     return tr( "Shows a pie chart download progress indicator" );
 }
 
 QString ProgressFloatItem::copyrightYears() const
 {
     return QStringLiteral("2010, 2011");
 }
 
 QVector<PluginAuthor> ProgressFloatItem::pluginAuthors() const
 {
     return QVector<PluginAuthor>()
             << PluginAuthor(QStringLiteral("Dennis Nienhüser"), QStringLiteral("nienhueser@kde.org"))
             << PluginAuthor(QStringLiteral("Bernhard Beschow"), QStringLiteral("bbeschow@cs.tu-berlin.de"));
 }
 
 QIcon ProgressFloatItem::icon() const
 {
     return m_icon;
 }
 
 void ProgressFloatItem::initialize()
 {
     const HttpDownloadManager* manager = marbleModel()->downloadManager();
     Q_ASSERT( manager );
     connect( manager, SIGNAL(progressChanged(int,int)), this, SLOT(handleProgress(int,int)) , Qt::UniqueConnection );
     connect( manager, SIGNAL(jobRemoved()), this, SLOT(removeProgressItem()), Qt::UniqueConnection );
 
     // Calculate font size
     QFont myFont = font();
     const QString text = "100%";
     int fontSize = myFont.pointSize();
     while( QFontMetrics( myFont ).boundingRect( text ).width() < contentRect().width() - 2 ) {
         ++fontSize;
         myFont.setPointSize( fontSize );
     }
     m_fontSize = fontSize - 1;
 
     // The icon resembles the pie chart
     QImage canvas( 16, 16, QImage::Format_ARGB32 );
     canvas.fill( Qt::transparent );
     QPainter painter( &canvas );
     painter.setRenderHint( QPainter::Antialiasing, true );
     painter.setPen( QColor ( Qt::black ) );
     painter.drawEllipse( 1, 1, 14, 14 );
     painter.setPen( Qt::NoPen );
     painter.setBrush( QBrush( QColor( Qt::darkGray ) ) );
     painter.drawPie( 2, 2, 12, 12, 1440, -1325 ); // 23 percent of a full circle
     m_icon = QIcon( QPixmap::fromImage( canvas ) );
 
     m_isInitialized = true;
 }
 
 bool ProgressFloatItem::isInitialized() const
 {
     return m_isInitialized;
 }
 
 QPainterPath ProgressFloatItem::backgroundShape() const
 {
     QPainterPath path;
 
     if ( active() ) {
         // Circular shape if active, invisible otherwise
         QRectF rect = contentRect();
         qreal width = rect.width();
         qreal height = rect.height();
         path.addEllipse( marginLeft() + 2 * padding(), marginTop() + 2 * padding(), width, height );
     }
 
     return path;
 }
 
 void ProgressFloatItem::paintContent( QPainter *painter )
 {
     // Timers cannot be stopped from another thread (e.g. from QtQuick RenderThread).
     if (QThread::currentThread() == QCoreApplication::instance()->thread()) {
         // Stop repaint timer if it is already running
         if (m_repaintTimer.isActive()) {
             m_repaintTimer.stop();
         }
     }
 
     if ( !active() ) {
         return;
     }
 
     painter->save();
 
     // Paint progress pie
     int startAngle =  90 * 16; // 12 o' clock
     int spanAngle = -ceil ( 360 * 16 * m_completed );
     QRectF rect( contentRect() );
     rect.adjust( 1, 1, -1, -1 );
 
     painter->setBrush( QColor( Qt::white ) );
     painter->setPen( Qt::NoPen );
     painter->drawPie( rect, startAngle, spanAngle );
 
     // Paint progress label
     QFont myFont = font();
     myFont.setPointSize( m_fontSize );
     const QString done = QString::number((int) (m_completed * 100)) + QLatin1Char('%');
     int fontWidth = QFontMetrics( myFont ).boundingRect( done ).width();
     QPointF baseline( padding() + 0.5 * ( rect.width() - fontWidth ), 0.75 * rect.height() );
     QPainterPath path;
     path.addText( baseline, myFont, done );
 
     painter->setFont( myFont );
     painter->setBrush( QBrush() );
     painter->setPen( QPen() );
     painter->drawPath( path );
 
     painter->restore();
 }
 
 void ProgressFloatItem::removeProgressItem()
 {
     m_jobMutex.lock();
     ++m_completedJobs;
     m_jobMutex.unlock();
 
     if ( enabled() ) {
         if ( !active() && !m_progressShowTimer.isActive() ) {
             m_progressShowTimer.start();
             m_progressHideTimer.stop();
         } else if ( active() ) {
             update();
             scheduleRepaint();
         }
     }
 }
 
 void ProgressFloatItem::handleProgress( int current, int queued )
 {
     m_jobMutex.lock();
     if ( current < 1 ) {
         m_totalJobs = 0;
         m_completedJobs = 0;
     } else {
         m_totalJobs = qMax<int>( m_totalJobs, queued + current );
     }
     m_jobMutex.unlock();
 
     if ( enabled() ) {
         if ( !active() && !m_progressShowTimer.isActive() && m_totalJobs > 0 ) {
             m_progressShowTimer.start();
             m_progressHideTimer.stop();
         } else if ( active() ) {
             if ( m_totalJobs < 1 || m_completedJobs == m_totalJobs ) {
                 m_progressShowTimer.stop();
                 m_progressHideTimer.start();
             }
             update();
             scheduleRepaint();
         }
 
         m_completed = 1.0;
         if ( m_totalJobs && m_completedJobs <= m_totalJobs ) {
             m_completed = (qreal) m_completedJobs / (qreal) m_totalJobs;
         }
     }
 }
 
 void ProgressFloatItem::hideProgress()
 {
     if ( enabled() ) {
         setActive( false );
 
         update();
         emit repaintNeeded( QRegion() );
     }
 }
 
 bool ProgressFloatItem::active() const
 {
     return m_active;
 }
 
 void ProgressFloatItem::setActive( bool active )
 {
     m_active = active;
     update();
 }
 
 void ProgressFloatItem::show()
 {
     setActive( true );
 
     update();
     emit repaintNeeded( QRegion() );
 }
 
 void ProgressFloatItem::scheduleRepaint()
 {
     if ( !m_repaintTimer.isActive() ) {
         m_repaintTimer.start();
     }
 }
 
 }
 
 #include "moc_ProgressFloatItem.cpp"