Re: Resizing view content
Re: Resizing view content
- Subject: Re: Resizing view content
- From: publiclook <email@hidden>
- Date: Wed, 22 Oct 2003 14:43:06 -0400
The position of scroll bars is based on the frame of the NSScrollView's
document view in relation to the bounds of the NSScrollView's content
view which is an NSClipView.
If you leave the document view's frame view unchanged and change only
its bounds, you are scaling the content of the document view, but as
far as the scroll view is concerned, nothing has changed. If you
change the frame of the document view, the scroll view will
automatically reposition scrollers etc.
The entire view system is explained in detail with diagrams in the book
"Cocoa Programming" :)
Chapter 19 of "Building Cocoa Applications: A Step-by-Step Guide"
includes "Adding a Zoom Button to GraphPaper"
Useful Apple documentation links including a section called "About
Scroll Views":
http://developer.apple.com/documentation/Cocoa/Conceptual/DrawViews/
index.html
http://developer.apple.com/documentation/Cocoa/Conceptual/DrawViews/
Tasks/TransformingCoords.html
I your case, I suggest that you set the frame of the content view to
whatever size you want it to be within the scroll view but leave the
content view bounds unchanged.
On Wednesday, October 22, 2003, at 12:10 PM, John Timmer wrote:
From: John Timmer <email@hidden>
Date: Wed Oct 22, 2003 12:10:50 PM US/Eastern
To: <email@hidden>
Subject: Resizing view content
I've got an NSScroll view that I'd like to scale the contents of to
fit a
specific size. I've found that getting the document view and calling:
[thePrintView scaleUnitSquareToSize: NSMakeSize( 0.63, 0.63)];
Scales it down nicely, but now there's a lot of white space at the
bottom.
I've tried resetting the bottom of the bounds origin (to 0- .37 * the
previous height), but I still wind up with white space (now, both on
the top
and the bottom). I'm not going to try resizing the containing view
until I
actually get my view down to the bottom of it first, but I assume I
won't
get that right immediately, too.
Is there a better way to scale the contents? Any examples?
Incidentally, I can't find a cogent description of the difference
between
the bounds and the frame of a view, which might help me sort this out
on my
own.
Cheers,
JT
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