scrollToEnd() method provided to trigger 'snapping' the terminal to cursor tracked position (typically the extreme value of the scrollbar, or the 'end')

Some signal-fu particular to keyPressEvent(QKeyEvent *) done to make the above usable, no existing dependent implementations should be disturbed by this.

lib/TerminalDisplay.cpp

@@ -1684,6 +1684,16 @@ void TerminalDisplay::setScroll(int cursor, int slines)
   connect(_scrollBar, SIGNAL(valueChanged(int)), this, SLOT(scrollBarPositionChanged(int)));
 }
 
+void TerminalDisplay::scrollToEnd()
+{
+  disconnect(_scrollBar, SIGNAL(valueChanged(int)), this, SLOT(scrollBarPositionChanged(int)));
+  _scrollBar->setValue( _scrollBar->maximum() );
+  connect(_scrollBar, SIGNAL(valueChanged(int)), this, SLOT(scrollBarPositionChanged(int)));
+
+  _screenWindow->scrollTo( _scrollBar->value() + 1 );
+  _screenWindow->setTrackOutput( _screenWindow->atEndOfOutput() );
+}
+
 void TerminalDisplay::setScrollBarPosition(ScrollBarPosition position)
 {
   if (_scrollbarLocation == position) 

lib/TerminalDisplay.h

@@ -117,6 +117,11 @@ public:
      */
     void setScroll(int cursor, int lines);
 
+    /**
+     * Scroll to the bottom of the terminal (reset scrolling).
+     */
+    void scrollToEnd();
+
     /** 
      * Returns the display's filter chain.  When the image for the display is updated,
      * the text is passed through each filter in the chain.  Each filter can define

lib/qtermwidget.cpp

@@ -120,6 +120,8 @@ QTermWidget::QTermWidget(int startnow, QWidget *parent)
             this, SIGNAL(termGetFocus()));
     connect(m_impl->m_terminalDisplay, SIGNAL(termLostFocus()),
             this, SIGNAL(termLostFocus()));
+    connect(m_impl->m_terminalDisplay, SIGNAL(keyPressedSignal(QKeyEvent *)),
+            this, SIGNAL(termKeyPressed(QKeyEvent *)));
 }
 
 void QTermWidget::selectionChanged(bool textSelected)
@@ -284,6 +286,13 @@ void QTermWidget::setScrollBarPosition(ScrollBarPosition pos)
     m_impl->m_terminalDisplay->setScrollBarPosition((TerminalDisplay::ScrollBarPosition)pos);
 }
 
+void QTermWidget::scrollToEnd()
+{
+    if (!m_impl->m_terminalDisplay)
+        return;
+    m_impl->m_terminalDisplay->scrollToEnd();
+}
+
 void QTermWidget::sendText(QString &text)
 {
     m_impl->m_session->sendText(text);

lib/qtermwidget.h

@@ -92,6 +92,9 @@ public:
     // Presence of scrollbar
     void setScrollBarPosition(ScrollBarPosition);
 
+    // Wrapped, scroll to end.
+    void scrollToEnd();
+
     // Send some text to terminal
     void sendText(QString & text);
 
@@ -121,6 +124,8 @@ signals:
     void termGetFocus();
     void termLostFocus();
 
+    void termKeyPressed(QKeyEvent *);
+
 public slots:
     // Paste clipboard content to terminal
     void copyClipboard();