Hi Fritz,

The popover controller is a standard NSViewController which is also acting as 
the delegate for the popovers.
I guess I ought to have included the header as well before:

#import <Cocoa/Cocoa.h>

@interface RSPanelPopoverController : NSViewController < NSPopoverDelegate >

@property (weak) IBOutlet NSPopover * popover;
@property (weak) IBOutlet NSBox * box;
@property (assign) NSInteger activePanelWidth;
@property (assign) NSInteger activePanelHeight;

- (void) showPanelPopover:(NSView*)locator activePanel:(NSView*)panel;

@end


I have modified the showPanelPopover: method  thus:

- (void) showPanelPopover:(NSView*)locator activePanel:(NSView*)panel {
        
        [self setActivePanelWidth: panel.frame.size.width];
        [self setActivePanelHeight: panel.frame.size.height];
        [panel setFrameOrigin: self.view.bounds.origin];                // new 
line
        [[self view] replaceSubview:[self box] with:panel];
        
        [[self popover] showRelativeToRect:[locator bounds] ofView:locator 
preferredEdge:NSMinYEdge];
}

with the effect that the view is correctly placed within the popover ON SECOND 
VIEWING. The initial load is still rendered off-set by half the vertical 
dimension.




Erik Stainsby
[email protected]
-------------------------------------
Consistently place constants on the LHS of an expression: you cannot 
accidentally assign when you meant to compare.




On 2012-03-17, at 1:10 PM, Fritz Anderson wrote:

> On 17 Mar 2012, at 2:48 PM, Erik Stainsby wrote:
> 
>> I've got a popover controller which loads one of several subviews ('panels' 
>> below) as it's content. I have properties on the controller which expose the 
>> current panel's height and width.  The popover resizes correctly but fails 
>> to place the panel correctly.  If the replaceSubview:with: is called before 
>> the resize (as illustrated) the panel appears shifted down by half it's 
>> height, leaving half of the panel content inaccessible. If the 
>> -replaceSubview:with: call is placed after the resize, the inserted panel is 
>> half invisible off the top edge of the popover.
>> 
>> Does anyone understand what on earth is happening? And what I can do about 
>> it?
>> 
>> 
>> @implementation RSPanelPopoverController
>> 
>> @synthesize popover = _popover;
>> @synthesize box = _box;
>> @synthesize activePanelWidth;
>> @synthesize activePanelHeight;
>> 
>> - (void) showPanelPopover:(NSView*)locator activePanel:(NSView*)panel {
>>      
>>      [[self view] replaceSubview:[self box] with:panel];
>>      
>>      [self setActivePanelWidth: panel.frame.size.width];
>>      [self setActivePanelHeight: panel.frame.size.height];
>>      
>>      [[self popover] showRelativeToRect:[locator bounds] ofView:locator 
>> preferredEdge:NSMinYEdge];
>> }
> 
> I'm not clear on a few things. It appears that the "panel" frame is offset 
> one way or the other, but I don't see the frame being set, nor the panel 
> being translated. You say that the order of setActivePanel…: matters, but you 
> don't show that the methods (odd, but not wrong, that you don't use dot 
> notation) do anything but change the value of an instance variable. If they 
> actually change view geometry, you'll have to show us.
> 
> What class does RSPanelPopoverController descend from?
> 
> What is .box? (It appears that it can be replaced only once.) Have you logged 
> the frames of .box, .view, and panel, before and after the replacement? And 
> .view.bounds?
> 
>       — F
> 


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