add menu to show/hide layers

abstractlayer.cpp

@@ -74,10 +74,12 @@ bool AbstractLayer::isVisible() const
 void AbstractLayer::setVisible(bool visible)
 {
     m_visible = visible;
+    emit visibilityChanged(m_visible);
 }
 
 void AbstractLayer::toggleVisibility()
 {
     m_visible = !m_visible;
+    emit visibilityChanged(m_visible);
 }
 

abstractlayer.h

@@ -40,12 +40,17 @@ public:
 
     void paintLayer(QPainter *painter);
 
-    MapWidget *map() const;
     bool isVisible() const;
+
+public slots:
     void setVisible(bool visible = true);
     void toggleVisibility();
 
+signals:
+    void visibilityChanged(bool visible);
+
 protected:
+    MapWidget *map() const;
     virtual void paint(QPainter *painter) = 0;
 
 private:

mainwidget.cpp

@@ -48,11 +48,11 @@ MainWidget::MainWidget(QWidget *parent)
 
     AbstractLayer *l = new TimeLayer(m_map);
     l->setVisible(false);
-    m_map->addLayer(l, 4);
+    m_map->addLayer(l, 4, "Time");
 
     l = new BatteryLayer(m_map);
     l->setVisible(false);
-    m_map->addLayer(l, 4);
+    m_map->addLayer(l, 4, "Battery");
 
     l = new MarkerLayer(m_map);
     connect(l, SIGNAL(markerAdded(QString)), m_markerList, SLOT(addMarker(QString)));
@@ -60,10 +60,10 @@ MainWidget::MainWidget(QWidget *parent)
     connect(m_markerList, SIGNAL(removeMarker(int)), l, SLOT(removeMarker(int)));
     connect(m_markerList, SIGNAL(markerRenamed(int, QString)), l, SLOT(renameMarker(int, QString)));
     l->load(QDir::homePath()+"/Maps/marker.list");
-    m_map->addLayer(l, 3);
+    m_map->addLayer(l, 3, "Marker");
 
     l = new GpsLayer(m_map);
-    m_map->addLayer(l, 1);
+    m_map->addLayer(l, 1, "GPS-Position");
 
     connect(m_map, SIGNAL(close()), this, SIGNAL(close()));
     connect(m_map, SIGNAL(showMarkerList()), this, SLOT(showList()));
@@ -93,7 +93,7 @@ void MainWidget::loadGpx(const QString &fileName)
     if (fileName.endsWith(".gpx")) {
         AbstractLayer *l = new GpxLayer(m_map);
         l->load(fileName);
-        m_map->addLayer(l, 2);
+        m_map->addLayer(l, 2, "GPS-Track");
     }
 }
 

mapwidget.cpp

@@ -73,7 +73,8 @@ MapWidget::MapWidget(QWidget *parent)
     m_manager(new QNetworkAccessManager(this)),
     m_networkMode(false),
     m_copyright(),
-    m_layer()
+    m_layer(),
+    m_layerMenu(new QMenu(this))
 {
     for (int x = 0; x < 100; ++x) {
         for (int y = 0; y < 100; ++y) {
@@ -135,8 +136,14 @@ MapWidget::~MapWidget()
     }
 }
 
-void MapWidget::addLayer(AbstractLayer *layer, int z)
+void MapWidget::addLayer(AbstractLayer *layer, int z, const QString &name)
 {
+    QAction *action = new QAction(name, m_layerMenu);
+    action->setCheckable(true);
+    action->setChecked(layer->isVisible());
+    connect(action, SIGNAL(triggered(bool)), layer, SLOT(setVisible(bool)));
+    connect(layer, SIGNAL(visibilityChanged(bool)), action, SLOT(setChecked(bool)));
+    m_layerMenu->addAction(action);
     m_layer.insertMulti(z, layer);
 }
 
@@ -315,6 +322,13 @@ void MapWidget::keyPressEvent(QKeyEvent *event)
             }
             break;
         }
+        case Qt::Key_L:
+        {
+            if (event->modifiers() == Qt::NoModifier) {
+                m_layerMenu->popup(mapToGlobal(QPoint(0, 0)));
+            }
+            break;
+        }
         case Qt::Key_Q:
         case Qt::Key_Escape:
         {
@@ -420,7 +434,7 @@ void MapWidget::paintEvent(QPaintEvent *event)
         }
         usage << "u: Show/hide user interface";
         usage << "m: Add a marker";
-        usage << "Alt+m: Show/hide all marker";
+        usage << "l: Show/hide individual layers";
         usage << "tab: Show/hide marker list";
         if (m_networkMode) {
             usage << "d: Download tiles for visible area";

mapwidget.h

@@ -24,6 +24,7 @@
 
 #include <QtCore/QMap>
 #include <QtCore/QPoint>
+#include <QtGui/QMenu>
 #include <QtGui/QWidget>
 #include <QtNetwork/QNetworkAccessManager>
 
@@ -34,7 +35,7 @@ public:
     MapWidget(QWidget *parent = 0);
     ~MapWidget();
 
-    void addLayer(AbstractLayer *layer, int z);
+    void addLayer(AbstractLayer *layer, int z, const QString &name);
 
     QRectF geoRect() const;
     QPointF geoPos() const;
@@ -95,6 +96,7 @@ private:
     bool m_networkMode;
     QString m_copyright;
     QMap<int, AbstractLayer *> m_layer;
+    QMenu *m_layerMenu;
 
 };