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# include <QWidget>
# include <QBrush>
# include <QPixmap>
# include <QColor>
# include <QPalette>

void SignalDiagram::SetBackgroundImage ( QWidget *fp_widget, const QPixmap *fp_image )
{
   QPalette newPalette = fp_widget->palette ( );
   newPalette.setBrush
   ( QPalette::Base,QBrush ( *fp_image ));

   newPalette.setBrush
   (QPalette::Background,QBrush ( *fp_image ));

   fp_widget->setPalette ( newPalette );
}

QBrush BrushSetAlpha ( QBrush f_brush, const int f_alpha )
{
   QColor color = f_brush.color ( );
   color.setAlpha ( f_alpha );
   f_brush.setColor ( color );

   return f_brush;
}

void SignalDiagram::SetTransparency ( QWidget *fp_widget, bool f_transparent )
{
   int alpha ( 255 );

   if ( f_transparent )
      alpha = 0;

   QPalette newPalette = fp_widget->palette ( );

   newPalette.setBrush ( QPalette::Base, BrushSetAlpha ( newPalette.base ( ), alpha ) ); 
   newPalette.setBrush ( QPalette::Background, BrushSetAlpha ( newPalette.background ( ), alpha ) );