Copy plot to clipboard

New context menu and shortcut (context restricted to widget) for copying
the current plot to the clipboard as a pixmap.

src/PlotDock.cpp

@@ -28,6 +28,28 @@ PlotDock::PlotDock(QWidget* parent)
     // connect slots that takes care that when an axis is selected, only that direction can be dragged and zoomed:
     connect(ui->plotWidget, SIGNAL(mousePress(QMouseEvent*)), this, SLOT(mousePress()));
     connect(ui->plotWidget, SIGNAL(mouseWheel(QWheelEvent*)), this, SLOT(mouseWheel()));
+
+    QShortcut* shortcutCopy = new QShortcut(QKeySequence::Copy, ui->plotWidget, nullptr, nullptr, Qt::WidgetShortcut);
+    connect(shortcutCopy, SIGNAL(activated()), this, SLOT(copy()));
+
+    ui->plotWidget->setContextMenuPolicy(Qt::CustomContextMenu);
+
+    // Set up context menu
+    m_contextMenu = new QMenu(this);
+    QAction* copyAction = new QAction(QIcon(":/icons/copy"), tr("Copy"), m_contextMenu);
+    copyAction->setShortcut(shortcutCopy->key());
+    m_contextMenu->addAction(copyAction);
+
+    connect(copyAction, &QAction::triggered, [&]() {
+       copy();
+    });
+
+    connect(ui->plotWidget, &QTableView::customContextMenuRequested,
+            [=](const QPoint& pos) {
+        // Show menu
+        m_contextMenu->popup(ui->plotWidget->mapToGlobal(pos));
+    });
+
 }
 
 PlotDock::~PlotDock()
@@ -612,3 +634,8 @@ void PlotDock::mouseWheel()
     else
         ui->plotWidget->axisRect()->setRangeZoom(Qt::Horizontal | Qt::Vertical);
 }
+
+void PlotDock::copy()
+{
+    QApplication::clipboard()->setPixmap(ui->plotWidget->toPixmap());
+}

src/PlotDock.h

@@ -3,6 +3,7 @@
 
 #include <QDialog>
 #include <QVariant>
+#include <QMenu>
 
 class SqliteTableModel;
 class QTreeWidgetItem;
@@ -81,6 +82,7 @@ private:
 
     SqliteTableModel* m_currentPlotModel;
     BrowseDataTableSettings* m_currentTableSettings;
+    QMenu* m_contextMenu;
 
     /*!
      * \brief guessdatatype try to parse the first 10 rows and decide the datatype
@@ -99,6 +101,8 @@ private slots:
     void selectionChanged();
     void mousePress();
     void mouseWheel();
+    void copy();
+
 };
 
 #endif