Article:		Working With Bitmap Images; Document-Based Application Redux
Subject:		validateScrollers question
Date:		2002-05-05 04:42:15
From:		sjmiller
As written, validateScrollers does not immediately remove the scrollers if the image is rescaled to fit within the current window. The area occupied by the scrollers is not updated. I partially fixed this by adding the following line to validateScrollers: [[[self window] contentView] setNeedsDisplay:YES]; But, even with this line, the scrollers go away, but the pin striped background is not redrawn until you click on the resize area of the window. What am I missing?

Showing messages 1 through 2 of 2.

• validateScrollers question
  2002-10-03 02:50:15  stupidfish23 [View]
  
  
  just add the line
  
  [view validateScrollers];
  
  to your scaleImageTo: method.
  
  so it basically looks like:
  - (void)scaleImageTo:(float)_scale
  {
  if(_scale>0)
  scale=_scale;
  
  [view scaleFrameBy:scale];
  [zoomControl setFloatValue:(scale*100)];
  [view validateScrollers];
  }
  
  it works great for me.
  stupidFish23

• validateScrollers question
  2002-05-06 13:06:36  michele [View]
  
  
  You don't miss anything. There's a bug in the framework.
  
  That's why I use
  :
  [[[self window] contentView] displayIfNeededIgnoringOpacity];
  
  Michèle