Re: Programmatic "Size To Fit"

FROM : Stuart Malin
DATE : Thu May 01 21:12:48 2008

SizeToFit will expand horizontally. If you need to constrain 
horizontal width...  here's some code I use resize NSTextField 
instances vertically while constraining the horizontal width to fit 
within some contained view.  I believe this approach would work with 
other sorts of controls. Adapt to your needs...

   float targetWidth = <<code snipped -- derive a value>>;        // subtract 
4 for 2 pixel gutter on either side
       
   // resize the textField to make all the text visible
   NSRect r = NSMakeRect(0, 0, targetWidth, MAXFLOAT);        // confining 
bounds: limited width, huge height
   NSSize s = [[textfield cell] cellSizeForBounds:r];        // returns 
minimum size needed to hold the receiver
   s.width = targetWidth;                        // force to consistent width
   [textfield setFrameSize:s];                    // and now set the textField's frame 
size

In my application, the textfield sits within some other view 
(theContentView), and I get its width thus:

   float targetWidth = [theContentView frame].size.width - 4.0;    // 
subtract 4 for 2 pixel gutter on either side

If you have an existing control and want its width to remain fixed, 
you could always get its current width and use this as the targetWidth.

HTH,
--Stuart



On May 1, 2008, at 7:58 AM, <email_removed> wrote:

> Message: 10
> Date: Thu, 1 May 2008 11:39:42 -0600
> From: Randall Meadows <<email_removed>>
> Subject: Programmatic "Size To Fit"
> To: cocoa-dev cocoa-dev <<email_removed>>
> Message-ID: <<email_removed>>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
> I am creating a bunch of controls (at least NSTextfield,
> NSPopupButton, NSSlider, and perhaps others) programmatically (that
> will eventually be shown in an NSTableView), and would like to apply
> the "Size To Fit" feature that IB provides.  However, there doesn't
> seem to be any API that does that.
>
> Does IB simply brute-force the resizing for every type of view, or am
> I missing the appropriate call in the NSView API?
>
> Thanks!
> randy