Add repaint optimization to TQProgressBar

This optimization makes TQProgressBar::setProgress() only repaint itself
if stepping to the new progress would cause a graphical change. This means
that for a width W and a total number of steps S, it will repaint itself
'W' times (every 'S/W' steps) instead of 'S' times (every step) as it is
right now.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/widgets/ntqprogressbar.h b/src/widgets/ntqprogressbar.h
index ca73cd8a4..ca90da2ae 100644
--- a/src/widgets/ntqprogressbar.h
+++ b/src/widgets/ntqprogressbar.h
@@ -65,6 +65,7 @@ class Q_EXPORT TQProgressBar : public TQFrame
 public:
     TQProgressBar( TQWidget* parent=0, const char* name=0, WFlags f=0 );
     TQProgressBar( int totalSteps, TQWidget* parent=0, const char* name=0, WFlags f=0 );
+    virtual ~TQProgressBar();
 
     int		totalSteps() const;
     int		progress()   const;
@@ -95,6 +96,7 @@ protected:
     virtual bool setIndicator( TQString & progress_str, int progress,
 			       int totalSteps );
     void styleChange( TQStyle& );
+    bool	requireRepaint( int newProgress ) const;
 
 private:
     int		total_steps;