SetScriptOutputDisplay to be readonly without using setReadOnly

This is because if you set it read only then ctrl+c for copying does not work
this approach allows ctrl+c and disables user editing through the use of the KeyPress handler
and disabling drag and drop
also the mouseMoveEventHandler prevents dragging out of the control affecting the text.

re #5895

Code/Mantid/MantidPlot/src/ScriptOutputDisplay.cpp

@@ -8,9 +8,6 @@
 #include <QFileDialog>
 #include <QPrinter>
 #include <QPrintDialog>
-#include <QMessageBox>
-#include <QTextStream>
-#include <QApplication>
 
 /**
  * Constructor
@@ -21,7 +18,14 @@
 ScriptOutputDisplay::ScriptOutputDisplay(QWidget * parent) :
   QTextEdit(parent), m_copy(NULL), m_clear(NULL), m_save(NULL)
 {
-  setReadOnly(true);
+  //the control is readonly, but if you set it read only then ctrl+c for copying does not work
+  //this approach allows ctrl+c and disables user editing through the use of the KeyPress handler
+  //and disabling drag and drop
+  //also the mouseMoveEventHandler prevents dragging out of the control affecting the text.
+  setReadOnly(false);
+  this->setAcceptDrops(false);
+
+
   setLineWrapMode(QTextEdit::WidgetWidth);
   setLineWrapColumnOrWidth(105);
   setAutoFormatting(QTextEdit::AutoNone);
@@ -35,6 +39,17 @@ ScriptOutputDisplay::ScriptOutputDisplay(QWidget * parent) :
   initActions();
 }
 
+/** Mouse move event handler - overridden to prevent dragging out of the control affecting the text
+ * it does this by temporarily setting the control to read only while the base event handler operates
+ * @param e the mouse move event
+ */
+void ScriptOutputDisplay::mouseMoveEvent(QMouseEvent * e)
+  {
+    this->setReadOnly(true);
+    QTextEdit::mouseMoveEvent(e);
+    this->setReadOnly(false);
+  };
+
 /**
  * Is there anything here
  */
@@ -52,6 +67,22 @@ void ScriptOutputDisplay::populateEditMenu(QMenu &editMenu)
   editMenu.addAction(m_clear);
 }
 
+
+
+/** 
+ * Capture key presses. 
+ * @param event A pointer to the QKeyPressEvent object
+ */
+void ScriptOutputDisplay::keyPressEvent(QKeyEvent* event)
+{
+  if ((event->key() == Qt::Key_C) && (event->modifiers() == Qt::KeyboardModifier::ControlModifier))
+  {
+    this->copy();
+  }
+  //accept all key presses to prevent keyboard interaction
+  event->accept();
+}
+
 /**
  *  Display an output message that is not an error
  *  @param msg :: The string message

Code/Mantid/MantidPlot/src/ScriptOutputDisplay.h

@@ -20,6 +20,10 @@ class ScriptOutputDisplay : public QTextEdit
 
   /// Add actions applicable to an edit menu
   void populateEditMenu(QMenu &editMenu);
+  ///Capture key presses
+  virtual void keyPressEvent(QKeyEvent* event);
+  //squash dragging ability
+  void mouseMoveEvent(QMouseEvent * e);
 
 public slots:
   /// Print the text within the window