Re: Silly NSTextFieldCell tricks

FROM : John Stiles
DATE : Thu Jan 31 22:54:54 2008

Yes, I want more than 5% (the default amount).

I tried using attributed strings, and it works, but it causes other
minor problems—for instance, -setAlignment: doesn't work on the text
field any more (you'd have to put that in the paragraph style). Doh.

This does look better, visually, than changing the bounds. It means I'll
need to redo some code, but hopefully it will be worth it.


Aki Inoue wrote:
> The tighteningFactor has appropriate value as the default.
> You can just specify any of the truncating line break mode to the cell
> and the rest should goes automatically.
>
> If you need to specify your own custom factor, then, you need to use
> attributed string.
>
> Aki
>
> On 2008/01/31, at 13:37, John Stiles wrote:
>

>> 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.

>>
>> Wait, I'm confused—how do I control the tightening factor on an
>> NSTextField? I can set its line-break mode, but there doesn't seem to
>> be a way to set its paragraph style or its tightening factor. Or is
>> this a case where I need to use attributed strings after all?
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