On Aug 6, 2014, at 8:40 AM, Ken Thomases <k...@codeweavers.com> wrote:
> On Aug 5, 2014, at 11:36 PM, Daryle Walker <dary...@mac.com> wrote:
>
>> I’m using the Size Inspector for my document window’s XIB to create a Small
>> Bottom Border as a Content Border. From the top to the bottom of my window,
>> not counting the title and tool bars, I got:
>>
>> 1. 20 pts. space w/ Autolayout
>> 2. Text-editing (1 line) field, changing its size width-wise as the window
>> does
>> 3. 8 pts. space w/ Autolayout
>> 4. WebView, changing its size as the window does
>> 5. Formerly 0 pts. space, now 22 pts. space, both times with Autolayout
>>
>> The 22 pts. of space added to the bottom exposes the Small Bottom Border.
>>
>> I made a menu item to turn on/off the Status Bar. I even put a check mark
>> there as appropriate. The problem is that the Bar doesn’t actually
>> disappear, it just looks inactive. If I try messing with the window’s frame
>> NSRect, I shrink the WebView with the window but keep the Bar. If I try
>> messing with the WebView’s frame NSRect, the WebView just shifts down and
>> leaves extra space on top.
>
> When you're using auto layout, you should not manipulate view frames
> directly. Instead, you modify or replace the constraints.
>
> In your list above, number 5 indicates you have a constraint determining the
> spacing between the web view and the bottom of the window content view. So,
> you want to adjust that. Presumably, it's of the form contentView.bottom =
> webView.bottom * 1 + 22 (or possibly reversed order with a negative
> constant). So, you want to adjust that constant term to 0.
>
> You can create an outlet from your controller class to the constraint.
> Connect it in the NIB. Then, you can refer to that constraint in your code
> and set its "constant" property.
I think I read about that once, that since the constraints are in the Interface
Builder list, you can play outlet games with them.
Your idea mostly works:
//=====
- (BOOL)showingStatusBar
{
return !![self.windowForSheet contentBorderThicknessForEdge:NSMinYEdge];
}
- (void)hideStatusBar
{
NSWindow * const window = self.windowForSheet;
//[window setAutorecalculatesContentBorderThickness:NO forEdge:NSMinYEdge];
[window setContentBorderThickness:0.0 forEdge:NSMinYEdge];
self.bottomSpacing.constant = 0.0;
}
- (void)showStatusBar
{
NSWindow * const window = self.windowForSheet;
//[window setAutorecalculatesContentBorderThickness:YES forEdge:NSMinYEdge];
[window setContentBorderThickness:PrStatusBarHeight forEdge:NSMinYEdge];
self.bottomSpacing.constant = PrStatusBarHeight;
}
- (IBAction)hideShowStatusBar:(id)sender
{
if ([self showingStatusBar]) {
[self hideStatusBar];
} else {
[self showStatusBar];
}
}
//=====
When first turning off the status bar, Xcode’s debugger showed an exception,
due to a constraints conflict. There’s a 22 pt gap between the WebView and the
bottom of the window, and two 4 pt gaps between the Status Text and both the
WebView and window bottom. I took care of it by changing the two Status Text
constraints’ priorities from 1000 (the default) to 999, so the
WebView/window-bottom constraint always wins.
Apple’s guides suggest calling [window
setAutorecalculatesContentBorderThickness:NO forEdge:Whatever] whenever calling
[window setContentBorderThickness:Something forEdge:Whatever]. Should I still
call “…Auto…”? If so, should it go next to the “setContent…” call? If so,
before or after? Should the “…Auto…” call be done once in a central location,
like the XIB’s awakening method, instead? Can I do this adjustment within the
XIB instead? Will I ever need to call “…Auto…” with YES?
—
Daryle Walker
Mac, Internet, and Video Game Junkie
darylew AT mac DOT com
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