From 0956611a06289d983d99d66ee22761e5cc71aa2e Mon Sep 17 00:00:00 2001
From: Robert Knight <robertknight@gmail.com>
Date: Sun, 20 May 2007 23:35:51 +0000
Subject: [PATCH] Update output tracking state of screen window when scrolling
 using Shift+Page/Arrow keys

svn path=/trunk/KDE/kdebase/apps/konsole/; revision=666825
---
 src/ScreenWindow.cpp    | 5 +++++
 src/ScreenWindow.h      | 6 ++++++
 src/TerminalDisplay.cpp | 2 ++
 3 files changed, 13 insertions(+)

diff --git a/src/ScreenWindow.cpp b/src/ScreenWindow.cpp
index da185d7c3..05d3c3bfc 100644
--- a/src/ScreenWindow.cpp
+++ b/src/ScreenWindow.cpp
@@ -140,6 +140,11 @@ void ScreenWindow::scrollBy( RelativeScrollMode mode , int amount )
     }
 }
 
+bool ScreenWindow::atEndOfOutput() const
+{
+    return _currentLine >= (lineCount()-windowLines());
+}
+
 void ScreenWindow::scrollTo( int line )
 {
     if ( line < 0 )
diff --git a/src/ScreenWindow.h b/src/ScreenWindow.h
index 54fe0e840..30a51a665 100644
--- a/src/ScreenWindow.h
+++ b/src/ScreenWindow.h
@@ -137,6 +137,12 @@ public:
     /** Returns the index of the line which is currently at the top of this window */
     int currentLine() const;
 
+    /** 
+     * Convenience method. Returns true if the window is currently at the bottom
+     * of the screen.
+     */
+    bool atEndOfOutput() const;
+
     /** Scrolls the window so that @p line is at the top of the window */
     void scrollTo( int line );
 
diff --git a/src/TerminalDisplay.cpp b/src/TerminalDisplay.cpp
index fe411ef71..4d5caa275 100644
--- a/src/TerminalDisplay.cpp
+++ b/src/TerminalDisplay.cpp
@@ -2246,6 +2246,8 @@ void TerminalDisplay::keyPressEvent( QKeyEvent* event )
 
         if ( update )
         {
+            _screenWindow->setTrackOutput( _screenWindow->atEndOfOutput() );
+
             updateLineProperties();
             updateImage();
         }