Re: Silly NSTextFieldCell tricks
Re: Silly NSTextFieldCell tricks
- Subject: Re: Silly NSTextFieldCell tricks
- From: John Stiles <email@hidden>
- Date: Thu, 31 Jan 2008 12:16:05 -0800
Peter Ammon wrote:
On Jan 31, 2008, at 11:56 AM, John Stiles wrote:
Peter Ammon wrote:
On Jan 31, 2008, at 11:27 AM, John Stiles wrote:
I've noticed that in table views, the NSTextFieldCell has the
ability to ever-so-slightly squash its contents horizontally, to
fit inside the table cell, before eventually giving up and
truncating them with ellipses.
Is there any way for me to programmatically do the same thing to my
own NSTextFieldCell?
As I'm typing this, suddenly I'm thinking "maybe I could fake it by
altering the cell's bounds while leaving the frame alone"… but is
there a better way? Changing the bounds would make the text
thinner, which isn't quite the same as squeezing the letters more
tightly together.
Hi John,
This is called "tightening" in the API, and it's enabled by default
on text fields (actually, on any control) when the line break mode
is one of the three truncation line break modes in
NSParagraphStyle.h. You can control the threshold between
tightening and truncation with the setTighteningFactorForTruncation:
method on NSMutableParagraphStyle.
Hope that helps,
-Peter
Cool!
Is there any way to enable this for an NSTextField in a window?
Someone off-list suggested using attributed strings to do this, but
is that the best way?
Attributed strings aren't necessary, and NSTextFields do this by
default. In IB, make an NSTextField and in the Inspector, set its
Line Breaks mode to Truncate Tail, and make it resize with the window.
Oh, it doesn't happen if the text field has key focus, so you could
add another text field to hold the key focus for testing. If you do
that, you should see this behavior.
Awesome. I'll give this a shot right now.
FWIW, I also experimented with setting the bounds of the cell, and this
actually worked great—better than I thought, actually. But it sounds
like I could get the behavior "for free" by just setting the text
field's tightening factor and line-break mode, so I'll try that next.
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