2 files changed, 9 insertions, 3 deletions

diff --git a/noncore/styles/theme/ogfxeffect.cpp b/noncore/styles/theme/ogfxeffect.cpp
index 2071a67..90b45fe 100644
--- a/noncore/styles/theme/ogfxeffect.cpp
+++ b/noncore/styles/theme/ogfxeffect.cpp
@@ -24,15 +24,16 @@
 //======================================================================
 
 
 QPixmap& OGfxEffect::gradient(QPixmap &pixmap, const QColor &ca,
         const QColor &cb, GradientType eff, int ncols)
 {
+        if ( !pixmap. isNull ( )) {
         QImage image = gradient(pixmap.size(), ca, cb, eff, ncols);
         pixmap.convertFromImage(image);
-
+        }
         return pixmap;
 }
 
 QImage OGfxEffect::gradient(const QSize &size, const QColor &ca,
                             const QColor &cb, GradientType eff, int /*ncols*/)
 {    
@@ -277,20 +278,21 @@ QImage OGfxEffect::gradient(const QSize &size, const QColor &ca,
 
 
 QPixmap& OGfxEffect::blend(QPixmap &pixmap, float initial_intensity,
                           const QColor &bgnd, GradientType eff,
                           bool anti_dir, int /*ncols*/)
 {
+        if ( !pixmap. isNull ( )) {
     QImage image = pixmap.convertToImage();
     OGfxEffect::blend(image, initial_intensity, bgnd, eff, anti_dir);
 
         if ( pixmap. depth ( ) <= 8 )
                 image. convertDepth ( pixmap. depth ( ));
 
     pixmap.convertFromImage(image);
-
+                }
     return pixmap;
 }
 
 
 QImage& OGfxEffect::blend(QImage &image, float initial_intensity,
                             const QColor &bgnd, GradientType eff,
diff --git a/noncore/styles/theme/othemestyle.cpp b/noncore/styles/theme/othemestyle.cpp
index a820efb..98e7253 100644
--- a/noncore/styles/theme/othemestyle.cpp
+++ b/noncore/styles/theme/othemestyle.cpp
@@ -246,12 +246,15 @@ bool OThemeStyle::eventFilter ( QObject *obj, QEvent *ev )
 }
 
 void OThemeStyle::drawBaseButton( QPainter *p, int x, int y, int w, int h,
                                   const QColorGroup &g, bool sunken, bool
                                   rounded, WidgetType type, const QBrush * )
 {
+        if ( w <= 0 || h <= 0 )
+                return;
+
         int offset = borderPixmap( type ) ? 0 : decoWidth( type );
         QPen oldPen = p->pen();
 
         // handle reverse bevel here since it uses decowidth differently
         if ( gradientHint( type ) == GrReverseBevel ) {
                 int i;
@@ -284,15 +287,16 @@ void OThemeStyle::drawBaseButton( QPainter *p, int x, int y, int w, int h,
                                                             *scalePixmap( w - offset * 2, h - offset * 2,
                                                                           type ) );
                         else
                                 p->fillRect( x + offset, y + offset, w - offset * 2, h - offset * 2,
                                              g.brush( QColorGroup::Button ) );
                 }
-                if ( borderPixmap( type ) )
+                if ( borderPixmap( type ) ) {
                         bitBlt( p->device(), x, y, scaleBorder( w, h, type ), 0, 0, w, h,
                                 Qt::CopyROP, false );
+                }
                 else
                         drawShade( p, x, y, w, h, g, sunken, rounded,
                                    highlightWidth( type ), borderWidth( type ), shade() );
         }
         p->setPen( oldPen );
 }