File indexing completed on 2025-01-05 03:59:25

 // SPDX-License-Identifier: LGPL-2.1-or-later
 //
 // SPDX-FileCopyrightText: 2008 Dennis Nienhüser <nienhueser@kde.org>
 // SPDX-FileCopyrightText: 2010 Bastian Holst <bastianholst@gmx.de>
 // SPDX-FileCopyrightText: 2013 Mohammed Nafees <nafees.technocool@gmail.com>
 //
 
 #include "NavigationFloatItem.h"
 
 #include <qmath.h>
 #include <QContextMenuEvent>
 #include <QRect>
 #include <QSlider>
 #include <QWidget>
 #include <QPainter>
 #include <QPixmapCache>
 
 #include <klocalizedstring.h>
 
 #include "ui_navigation.h"
 #include "ViewportParams.h"
 #include "MarbleWidget.h"
 #include "MarbleModel.h"
 #include "WidgetGraphicsItem.h"
 #include "MarbleGraphicsGridLayout.h"
 
 namespace Marble
 {
 
 NavigationFloatItem::NavigationFloatItem( const MarbleModel *marbleModel )
     : AbstractFloatItem( marbleModel, QPointF( -10, -30 ) ),
       m_marbleWidget( nullptr ),
       m_widgetItem( nullptr ),
       m_navigationWidget( nullptr ),
       m_oldViewportRadius( 0 ),
       m_contextMenu( nullptr ),
       m_showHomeButton( true )
 {
     // Plugin is visible by default on desktop systems
     const bool smallScreen = MarbleGlobal::getInstance()->profiles() & MarbleGlobal::SmallScreen;
     setEnabled( !smallScreen );
     setVisible( true );
 
     setCacheMode( NoCache );
     setBackground( QBrush( QColor( Qt::transparent ) ) );
     setFrame( NoFrame );
 }
 
 NavigationFloatItem::~NavigationFloatItem()
 {
     delete m_navigationWidget;
 }
 
 QStringList NavigationFloatItem::backendTypes() const
 {
     return QStringList(QStringLiteral("navigation"));
 }
 
 QString NavigationFloatItem::name() const
 {
     return i18n("Navigation");
 }
 
 QString NavigationFloatItem::guiString() const
 {
     return i18n("&Navigation");
 }
 
 QString NavigationFloatItem::nameId() const
 {
     return QStringLiteral("navigation");
 }
 
 QString NavigationFloatItem::version() const
 {
     return QStringLiteral("1.0");
 }
 
 QString NavigationFloatItem::description() const
 {
     return i18n("A plugin to add mouse control to zoom and move the map");
 }
 
 QString NavigationFloatItem::copyrightYears() const
 {
     return QStringLiteral("2008, 2010, 2013");
 }
 
 QVector<PluginAuthor> NavigationFloatItem::pluginAuthors() const
 {
     return QVector<PluginAuthor>()
             << PluginAuthor(QStringLiteral("Dennis Nienhüser"), QStringLiteral("nienhueser@kde.org"))
             << PluginAuthor(QStringLiteral("Bastian Holst"), QStringLiteral("bastianholst@gmx.de"))
             << PluginAuthor(QStringLiteral("Mohammed Nafees"), QStringLiteral("nafees.technocool@gmail.com"));
 }
 
 QIcon NavigationFloatItem::icon() const
 {
     return QIcon::fromTheme(QStringLiteral("circular-arrow-shape"));
 }
 
 void NavigationFloatItem::initialize()
 {
     QWidget *navigationParent = new QWidget( nullptr );
     navigationParent->setAttribute( Qt::WA_NoSystemBackground, true );
 
     m_navigationWidget = new Ui::Navigation;
     m_navigationWidget->setupUi( navigationParent );
 
     m_widgetItem = new WidgetGraphicsItem( this );
     m_widgetItem->setWidget( navigationParent );
 
     MarbleGraphicsGridLayout *layout = new MarbleGraphicsGridLayout( 1, 1 );
     layout->addItem( m_widgetItem, 0, 0 );
 
     setLayout( layout );
 
     if ( m_showHomeButton ) {
       activateHomeButton();
     } else {
       activateCurrentPositionButton();
     }
 }
 
 bool NavigationFloatItem::isInitialized() const
 {
     return m_widgetItem;
 }
 
 void NavigationFloatItem::setProjection( const ViewportParams *viewport )
 {
     if ( viewport->radius() != m_oldViewportRadius ) {
         m_oldViewportRadius = viewport->radius();
         // The slider depends on the map state (zoom factor)
         update();
     }
 
     AbstractFloatItem::setProjection( viewport );
 }
 
 bool NavigationFloatItem::eventFilter( QObject *object, QEvent *e )
 {
     if ( !enabled() || !visible() ) {
         return false;
     }
 
     MarbleWidget *widget = dynamic_cast<MarbleWidget*> (object);
     if ( !widget ) {
         return AbstractFloatItem::eventFilter( object, e );
     }
 
     if ( m_marbleWidget != widget ) {
         // Delayed initialization
         m_marbleWidget = widget;
 
         m_maxZoom = m_marbleWidget->maximumZoom();
         m_minZoom = m_marbleWidget->minimumZoom();
 
         m_navigationWidget->arrowDisc->setMarbleWidget( m_marbleWidget );
         connect( m_navigationWidget->arrowDisc, SIGNAL(repaintNeeded()), SIGNAL(repaintNeeded()) );
 
         connect( m_navigationWidget->homeButton, SIGNAL(repaintNeeded()), SIGNAL(repaintNeeded()) );
         if ( m_showHomeButton ) {
           activateHomeButton();
         } else {
           activateCurrentPositionButton();
         }
 
         connect( m_navigationWidget->zoomInButton, SIGNAL(repaintNeeded()), SIGNAL(repaintNeeded()) );
         connect( m_navigationWidget->zoomInButton, SIGNAL(clicked()),
                  m_marbleWidget, SLOT(zoomIn()) );
 
         m_navigationWidget->zoomSlider->setMaximum( m_maxZoom );
         m_navigationWidget->zoomSlider->setMinimum( m_minZoom );
         connect( m_navigationWidget->zoomSlider, SIGNAL(repaintNeeded()), SIGNAL(repaintNeeded()) );
         connect( m_navigationWidget->zoomSlider, SIGNAL(valueChanged(int)),
                  m_marbleWidget, SLOT(setZoom(int)) );
 
         connect( m_navigationWidget->zoomOutButton, SIGNAL(repaintNeeded()), SIGNAL(repaintNeeded()) );
         connect( m_navigationWidget->zoomOutButton, SIGNAL(clicked()),
                  m_marbleWidget, SLOT(zoomOut()) );
 
         connect( m_marbleWidget, SIGNAL(zoomChanged(int)), SLOT(updateButtons(int)) );
         updateButtons( m_marbleWidget->zoom() );
         connect( m_marbleWidget, SIGNAL(themeChanged(QString)), this, SLOT(selectTheme(QString)) );
      }
 
     return AbstractFloatItem::eventFilter(object, e);
 }
 
 void NavigationFloatItem::selectTheme( const QString& )
 {
     if ( m_marbleWidget ) {
         m_maxZoom = m_marbleWidget->maximumZoom();
         m_minZoom = m_marbleWidget->minimumZoom();
         m_navigationWidget->zoomSlider->setMaximum( m_maxZoom );
         m_navigationWidget->zoomSlider->setMinimum( m_minZoom );
         updateButtons( m_marbleWidget->zoom() );
     }
 }
 
 void NavigationFloatItem::updateButtons( int zoomValue )
 {
     bool const zoomInEnabled = m_navigationWidget->zoomInButton->isEnabled();
     bool const zoomOutEnabled = m_navigationWidget->zoomOutButton->isEnabled();
     int const oldZoomValue = m_navigationWidget->zoomSlider->value();
     m_navigationWidget->zoomInButton->setEnabled( zoomValue < m_maxZoom );
     m_navigationWidget->zoomOutButton->setEnabled( zoomValue > m_minZoom );
     m_navigationWidget->zoomSlider->setValue( zoomValue );
     if ( zoomInEnabled != m_navigationWidget->zoomInButton->isEnabled() ||
          zoomOutEnabled != m_navigationWidget->zoomOutButton->isEnabled() ||
          oldZoomValue != zoomValue ) {
         update();
     }
 }
 
 QPixmap NavigationFloatItem::pixmap( const QString &id )
 {
     QPixmap result;
     if ( !QPixmapCache::find( id, &result ) ) {
         result = QPixmap(QLatin1String(":/") + id + QLatin1String(".png"));
         QPixmapCache::insert( id, result );
     }
     return result;
 }
 
 void NavigationFloatItem::paintContent( QPainter *painter )
 {
     painter->drawPixmap( 0, 0, pixmap( QLatin1String("marble/navigation/navigational_backdrop_top") ) );
     painter->drawPixmap( 0, 70, pixmap( QLatin1String("marble/navigation/navigational_backdrop_center") ) );
     painter->drawPixmap( 0, 311, pixmap( QLatin1String("marble/navigation/navigational_backdrop_bottom") ) );
 }
 
 void NavigationFloatItem::contextMenuEvent( QWidget *w, QContextMenuEvent *e )
 {
     if ( !m_contextMenu ) {
         m_contextMenu = contextMenu();
 
         m_activateCurrentPositionButtonAction = new QAction( QIcon(),
                                                              i18n( "Current Location Button" ),
                                                              m_contextMenu );
         m_activateHomeButtonAction = new QAction(QIcon::fromTheme(QStringLiteral("go-home")),
                                                              i18n( "Home Button" ),
                                                              m_contextMenu );
         m_activateHomeButtonAction->setVisible( !m_showHomeButton );
         m_activateCurrentPositionButtonAction->setVisible( m_showHomeButton );
         m_contextMenu->addSeparator();
         m_contextMenu->addAction( m_activateCurrentPositionButtonAction );
         m_contextMenu->addAction( m_activateHomeButtonAction );
 
         connect( m_activateCurrentPositionButtonAction, SIGNAL(triggered()), SLOT(activateCurrentPositionButton()) );
         connect( m_activateHomeButtonAction, SIGNAL(triggered()), SLOT(activateHomeButton()) );
     }
 
     Q_ASSERT( m_contextMenu );
     m_contextMenu->exec( w->mapToGlobal( e->pos() ) );
 }
 
 void NavigationFloatItem::activateCurrentPositionButton()
 {
     if ( !isInitialized() ) {
         return;
     }
 
     QIcon icon;
     icon.addPixmap( pixmap(QLatin1String("marble/navigation/navigational_currentlocation")), QIcon::Normal );
     icon.addPixmap( pixmap(QLatin1String("marble/navigation/navigational_currentlocation_hover")), QIcon::Active );
     icon.addPixmap( pixmap(QLatin1String("marble/navigation/navigational_currentlocation_pressed")), QIcon::Selected );
     m_navigationWidget->homeButton->setProperty("icon", QVariant(icon));
 
     if ( m_contextMenu ) {
         m_activateCurrentPositionButtonAction->setVisible( false );
         m_activateHomeButtonAction->setVisible( true );
     }
 
     if (m_marbleWidget) {
       disconnect( m_navigationWidget->homeButton, SIGNAL(clicked()), m_marbleWidget, SLOT(goHome()) );
     }
     connect( m_navigationWidget->homeButton, SIGNAL(clicked()), SLOT(centerOnCurrentLocation()) );
     Q_EMIT repaintNeeded();
     m_showHomeButton = false;
     Q_EMIT settingsChanged( nameId() );
 }
 
 void NavigationFloatItem::activateHomeButton()
 {
     if ( !isInitialized() ) {
         return;
     }
 
     QIcon icon;
     icon.addPixmap( pixmap(QLatin1String("marble/navigation/navigational_homebutton")), QIcon::Normal );
     icon.addPixmap( pixmap(QLatin1String("marble/navigation/navigational_homebutton_hover")), QIcon::Active );
     icon.addPixmap( pixmap(QLatin1String("marble/navigation/navigational_homebutton_press")), QIcon::Selected );
     m_navigationWidget->homeButton->setProperty("icon", QVariant(icon));
 
     if ( m_contextMenu ) {
         m_activateCurrentPositionButtonAction->setVisible( true );
         m_activateHomeButtonAction->setVisible( false );
     }
 
     disconnect( m_navigationWidget->homeButton, SIGNAL(clicked()), this, SLOT(centerOnCurrentLocation()) );
     if (m_marbleWidget) {
       connect( m_navigationWidget->homeButton, SIGNAL(clicked()), m_marbleWidget, SLOT(goHome()) );
     }
     Q_EMIT repaintNeeded();
     m_showHomeButton = true;
     Q_EMIT settingsChanged( nameId() );
 }
 
 void NavigationFloatItem::centerOnCurrentLocation()
 {
 }
 
 QHash<QString,QVariant> NavigationFloatItem::settings() const
 {
     QHash<QString, QVariant> settings = AbstractFloatItem::settings();
     settings.insert(QStringLiteral("showHomeButton"), m_showHomeButton);
     return settings;
 }
 
 void NavigationFloatItem::setSettings( const QHash<QString, QVariant> &settings )
 {
     AbstractFloatItem::setSettings( settings );
     m_showHomeButton = settings.value(QStringLiteral("showHomeButton"), true).toBool();
     if ( m_showHomeButton ) {
         activateHomeButton();
     } else {
         activateCurrentPositionButton();
     }
 }
 
 } // namespace Marble
 
 #include "moc_NavigationFloatItem.cpp"