Re: NSSlider responding to superview's drawRect
Re: NSSlider responding to superview's drawRect
- Subject: Re: NSSlider responding to superview's drawRect
- From: Michael Watson <email@hidden>
- Date: Tue, 10 Jun 2008 17:22:48 -0400
This is normally what I have to do as well, but is there a more
optimized way to achieve the goal of drawing only the rect that needs
redrawing?
--
m-s
On 10 Jun, 2008, at 12:05, Ken Ferry wrote:
You're probably filling your gradient into the rect passed in
drawRect.
That rectangle just represents the dirty part of your view. If you
had a solid color to draw, you could just fill the rect, but with a
gradient you will get your gradient, top to bottom, within this
possibly small rect within your view.
Try drawing the gradient into [self bounds] instead. This describes
the location of the entire view in its own coordinate system.
-Ken
On Jun 10, 2008, at 8:51 AM, Jonathan Dann <email@hidden> wrote:
Hi All,
This is something that I haven't seen before. I have a custom view
that inherits from NSView directly and just draws a gradient
background. In IB I've placed an NSSlider on the view which works
fine. The problem comes when drawRect in my custom view is invoked,
I draw the gradient and a 1px line at the top of the view, but the
line also gets draw just above the NSSlider! logging shows the
following
1) resize window - drawRect is called and the line above the slider
disappears
2) move slider - drawRect is called from my gradient view but with
the frame of the slider. The line then appears.
Is this a known issue with NSSlider and a custom view or have I
missed an idiosyncracy of NSControls.
Thanks in adavnce,
Jonathan
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