Re: How to get max size of view according to constraints?
Re: How to get max size of view according to constraints?
- Subject: Re: How to get max size of view according to constraints?
- From: Charles Srstka <email@hidden>
- Date: Wed, 21 Mar 2012 13:26:31 -0500
On Mar 21, 2012, at 12:52 PM, Per Bull Holmen wrote:
> Den 18:09 21. mars 2012 skrev Charles Srstka
> <email@hidden> følgende:
>> On Mar 21, 2012, at 8:54 AM, Per Bull Holmen wrote:
>>
>> I am old school and know nothing about constraints, but given your
>> descriptions, perhaps you can tie the document view size to the clip
>> view size (which is also called content view) instead of the scroll
>> view size?
>>
>>
>> Actually, what I’m doing currently is to tie it to the clipview’s
>> -documentVisibleRect.size, which is working quite well.
>>
>> Charles
>
> But from how I understand what you've written, you are constantly
> listening for frame changes from the scroll view, and setting new
> constraints each time. I don't know how the constraints system works,
> but I understood it the way that you wouldn't have to do this if the
> scroll view's size was equal to the visible proportion of the document
> view. Therefore I was wondering how come you didn't set the
> constraints to follow the clip view instead of the scroll view,
> because I believe the clip view's frame will always have the same size
> as the visible portion of the document view. I think that would be
> much cleaner. I haven't done any programming with constraints, so I
> don't know if this will work.
It seems to be the same in testing; however, is it guaranteed to be that way anywhere in the documentation? The fact that NSClipView actually has a separate property named -documentVisibleRect seems to imply that it isn’t.
Charles
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