Move Rectangle on mouse Move

[marcel]

I don't know about that. Maybe if you use move() instead of setGeometry() will make it move faster.

First try rewriting it as we discussed, and see if the lag still appears.

Regards

[vermarajeev]

I don't know about that. Maybe if you use move() instead of setGeometry() will make it move faster.

First try rewriting it as we discussed, and see if the lag still appears.

Regards

Yes I have used move instead of setGeometry() but still there is lag. I have comlpetely removed the previous logic and is using new functionality as we discussed but still there is lag....

[marcel]

Can you show me again the code?

[vermarajeev]

Can you show me again the code?

void myClass::mouseMoveEvent( QMouseEvent *e ){
  if ( !readonly ){		
      if( band ){
	band->move( e->pos()- mouseRectOffset );			
                return;
       }
      //some other stuffs regarding application
   }
}
void myClass::mousePressEvent( QMouseEvent *e ){
  if( e->button() == LeftButton ){
   if ( !readonly ){
        if(canvasMode == CM_DragDropMode ){			
               hilitObject->hilight( this, FALSE );
	dragSelection( e->pos() );	
	leftDown = TRUE;
	return;
         }
     //some other stuffs regarding application
    }
  }
}
 
void myClass::mouseReleaseEvent( QMouseEvent *e ){
if( leftDown ){
    leftDown = FALSE;
    if( band ){
         cacluateNewObjectPosition(e->pos());
         delete band;
         band = 0;
 
         // If the pasteList is not empty (meaning we didn't cancel the
         // paste operation), then do the following:
         if( ! pasteList.isEmpty() ){
	// Update the pixel coordinates
          }
         update();
         return;
    }
    //some other stuffs regarding application
}
void myClass::pasteObjects(){
  //first calculate pasteRect
   if( !band )
           band = new QRubberBand(QRubberBand::Rectangle, this);	
    band->setGeometry( pasteRect );
    band->show();
}
void myClass::dragSelection( QPoint clickedP ){
  //first calculate pasteRect
   if( !band )
           band = new QRubberBand(QRubberBand::Rectangle, this);	
    band->setGeometry( pasteRect );
    band->show();
}

void myClass::mouseMoveEvent( QMouseEvent *e ){
  if ( !readonly ){		
      if( band ){
	band->move( e->pos()- mouseRectOffset );			
                return;
       }
      //some other stuffs regarding application
   }
}
void myClass::mousePressEvent( QMouseEvent *e ){
  if( e->button() == LeftButton ){
   if ( !readonly ){
        if(canvasMode == CM_DragDropMode ){			
               hilitObject->hilight( this, FALSE );
	dragSelection( e->pos() );	
	leftDown = TRUE;
	return;
         }
     //some other stuffs regarding application
    }
  }
}

void myClass::mouseReleaseEvent( QMouseEvent *e ){
if( leftDown ){
    leftDown = FALSE;
    if( band ){
         cacluateNewObjectPosition(e->pos());
         delete band;
         band = 0;
         
         // If the pasteList is not empty (meaning we didn't cancel the
         // paste operation), then do the following:
         if( ! pasteList.isEmpty() ){
	// Update the pixel coordinates
          }
         update();
         return;
    }
    //some other stuffs regarding application
}
void myClass::pasteObjects(){
  //first calculate pasteRect
   if( !band )
           band = new QRubberBand(QRubberBand::Rectangle, this);	
    band->setGeometry( pasteRect );
    band->show();
}
void myClass::dragSelection( QPoint clickedP ){
  //first calculate pasteRect
   if( !band )
           band = new QRubberBand(QRubberBand::Rectangle, this);	
    band->setGeometry( pasteRect );
    band->show();
}

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[vermarajeev]

Ok, I'm back again...Can anyone please tell me why there is a lag when I move QRubberBand rectangle???