Re: Adding Constraints in Code
Re: Adding Constraints in Code
- Subject: Re: Adding Constraints in Code
- From: Dave <email@hidden>
- Date: Mon, 14 Sep 2015 19:45:39 +0100
Hi,
[self.pValidationIssueScrollView setBackgroundColor:[NSColor redColor]];
self.pValidationListStackView.wantsLayer = YES;
self.pValidationListStackView.layer.backgroundColor = [[NSColor blueColor] CGColor];
Did the trick!
When I run it, the StackView grows with the ScrollView, e.g. it’s Blue up until the V Scroll Bar on right, then it’s Red
So, I assume I need to somehow attach the LTWDetailView to the StackView by adding Constraints?
The DetailView is loaded from a NIB and has it’s own set of constraints if that makes a difference?
Thanks again,
All the Best
Dave
> On 14 Sep 2015, at 19:18, Jonathan Hull <email@hidden> wrote:
>
> Oh yeah, it does on iOS, but not OS X. Sorry about that.
>
> On OS X, you need to layer back it and set the layer’s background color.
>
> stackview.wantsLayer = YES
> stackview.layer.backgroundColor = [NSColor blueColor]
>
> (Note: The above was written in mail, so it may take a little tweaking to work)
>
> Thanks,
> Jon
>
>> On Sep 14, 2015, at 11:11 AM, Dave <email@hidden> wrote:
>>
>>
>>> On 14 Sep 2015, at 18:50, Jonathan Hull <email@hidden> wrote:
>>>
>>> You shouldn’t have to add any constraints to the direct children of a StackView (and in fact, you will most likely get an error if you try), since the StackView will make its own constraints and manages them for you.
>>>
>>> My guess is that the StackView is not resizing with the ScrollView. You can test this by temporarily removing the detail view (and associated constraints) and setting the StackView’s background color to some bright color.
>>
>> Unfortunately NSStackView doesn’t seem to have a setBackgroundColor method. I set it on the ScrollView, that that of course moves when I resize the window.
>>
>> These are the frame rects after adding the DetailView to the StackView.
>>
>> ScrollView Frame: {{20, 54}, {760, 355}}
>> ClipView Frame: {{1, 1}, {743, 353}}
>> StackView Frame: {{0, 0}, {744, 16}} ???????????????????????????????
>>
>> I can add as many views as I like to the StackView and it’s Scrolls correctly vertically, I just can’t get the Detail View to expand out in H. Yes,
>>
>>> Constraints with ScrollViews are notoriously tricky…
>>
>> You’re not wrong there!
>>
>> Incidentally, I took another look at InfoBarView and it doesn’t handle window re-sizing so it’s not much good in this case.
>>
>> Thanks a lot.
>> Cheers
>> Dave
>>
>>
>>>> On Sep 14, 2015, at 8:48 AM, Dave <email@hidden> wrote:
>>>>
>>>>
>>>>>
>>>>> In fact, with NSStackView you should just be able to set the content hugging priority and it’ll just work
>>>>>
>>>>> myDetailView = [myDetailViewController getPrimaryView];
>>>>> [self.pValidationListStackView addView:myDetailView inGravity:NSStackViewGravityTop]; // NOTE: Should this not be GravityLeading as you’re using a horizontal stack view?
>>>>> [myDetailView setContentHuggingPriority:NSLayoutPriorityDefaultLow forOrientation:NSLayoutConstraintOrientationHorizontal];
>>>>>
>>>>> and that’s all you should need.
>>>>>
>>>>> iain
>>>>
>>>> I tried that and it had no effect. When I resize the window the Scroll View Resizes (and I assume the StackView?) but the Detail View stays the same size - e.g. does not move with the right edge of the Scroll View.
>>>>
>>>> Cheers
>>>> Dave
>>>>
>>>>
>>>>
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