UILabel sizeToFit shows the same problem. If I start with a tall UILabel and
set its attributedText to my string, and then tell the label to sizeToFit, the
label gets narrower and the text no longer fits. This is because the sizeToFit
algorithm is ignoring the margins (in fact it is probably using
boundingRectWithSize behind the scenes). m.
> On Jan 23, 2013, at 11:01 PM, Kyle Sluder <k...@ksluder.com> wrote:
>
>>> It may be that the height is right despite the narrowed width, but since
>>> the narrowed width is unexpected, it would be nice to be assured of this.
>>> m.
>>
>> Why is the narrowed width unexpected? You told the text system to use 20pt
>> margins on each side of a 100pt text container.
>
> I expect this method to tell me the size of a rectangle (e.g. a bitmap
> context) such that if I draw my attributed string into that rectangle, it
> will all fit. When I say "all" I mean "all", including the margins.
>
> Instead, this method is telling me the size of a tight rectangle around the
> black marks the letters make. That is not at all the same thing.
>
> It is easy to see the difference. Let's say I say this:
>
> CGRect r = [as boundingRectWithSize:CGSizeMake(100,10000)
> options:NSStringDrawingUsesLineFragmentOrigin context:nil];
>
> And let's say the answer is {51.8027, 465}. Well, if I try to draw my string
> into a rect of size {51.8027, 465}, it won't fit. That's because the 20pt
> margins will be applied within those bounds, so my text will be trying to fit
> in an 11pt space, and will be much longer than 465pt high.
>
> Therefore I believe this is a bug. I asked for the bounding rect of my
> string, but the system gave me the bounding rect of a *different* string, a
> string that has no margins. m.
--
matt neuburg, phd = m...@tidbits.com, http://www.apeth.net/matt/
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