NSScrollView : documentView stuck in the bottom-left corner !
-
Hi list !
I want to programatically create a scroll view and here what I'm
using right now :
NSScrollView * scrollView = [[[NSScrollView alloc] init]
autorelease];
[scrollView setDrawsBackground:NO];
[scrollView setHasVerticalScroller:YES];
[scrollView setDocumentView:lateralView];
[scrollView setAutoresizingMask:NSViewWidthSizable +
NSViewHeightSizable];
lateralView is just a custom NSView that does nothing special
(currently, it only fills itself in black for test purpose) but it is
stuck in the bottom-left corner of the scroll view ! Very problematic
and making my scroll view unusable.
What is the correct way to add a document view to an NSScrollView ?
By the way, I don't want to subclass anything else that my custom
class. Because standard NSScrollView is used in a lot of standard
objects (NSTableView for instance) without subclassing and that it
works perfectly. So there IS a solution to have it handle its
document view correctly.
Thanks for your help,
Eric. -
OK,
Forget about it, I just forgot to subclass isFlipped on my custom
class so that it returns YES.
Eric.
Le 10 août 05 à 19:45, Eric Morand a écrit :
> Hi list !
>
>
>
> I want to programatically create a scroll view and here what I'm
> using right now :
>
> NSScrollView * scrollView = [[[NSScrollView alloc] init]
> autorelease];
>
> [scrollView setDrawsBackground:NO];
> [scrollView setHasVerticalScroller:YES];
> [scrollView setDocumentView:lateralView];
> [scrollView setAutoresizingMask:NSViewWidthSizable +
> NSViewHeightSizable];
>
>
>
> lateralView is just a custom NSView that does nothing special
> (currently, it only fills itself in black for test purpose) but it
> is stuck in the bottom-left corner of the scroll view ! Very
> problematic and making my scroll view unusable.
>
>
>
> What is the correct way to add a document view to an NSScrollView ?
> By the way, I don't want to subclass anything else that my custom
> class. Because standard NSScrollView is used in a lot of standard
> objects (NSTableView for instance) without subclassing and that it
> works perfectly. So there IS a solution to have it handle its
> document view correctly.
>
>
>
> Thanks for your help,
>
>
>
> Eric.
> _______________________________________________
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> Help/Unsubscribe/Update your Subscription:
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>
> This email sent to <eric.morand...>
>
-
Hi again !
i'm back with my question about NSScrollView.
Let me summarize the problem : I want to add a custom view (created
and populated with controls in IB) to an NSScrollView, programatically
( as there is no way to doing this correctly in IB) but when I add my
custom view to the scroll view (using setDocumentView: ), it remains
stuck in the bottom-left corner !
So, I thought that subclassing isFlipped: in my custom viex so that
it returns YES would solve the problem. In a way, it did : now my
custom view is at the right place...but all my controls are drawn
inverted (controls at the top in IB are at the bottom) !!!
I can understand why (the coordinate system is flipped in my custom
view), what I don't get is : how can I have a custom view created in
IB positioned correctly in a scroll view while keeping the controls
at the place where they are in IB ???
Thanks by advance for your help,
Eric.
Le 10 août 05 à 20:06, Eric Morand a écrit :
> OK,
>
> Forget about it, I just forgot to subclass isFlipped on my custom
> class so that it returns YES.
>
>
>
> Eric.
>
>
> Le 10 août 05 à 19:45, Eric Morand a écrit :
>
>
>> Hi list !
>>
>>
>>
>> I want to programatically create a scroll view and here what I'm
>> using right now :
>>
>> NSScrollView * scrollView = [[[NSScrollView alloc] init]
>> autorelease];
>>
>> [scrollView setDrawsBackground:NO];
>> [scrollView setHasVerticalScroller:YES];
>> [scrollView setDocumentView:lateralView];
>> [scrollView setAutoresizingMask:NSViewWidthSizable +
>> NSViewHeightSizable];
>>
>>
>>
>> lateralView is just a custom NSView that does nothing special
>> (currently, it only fills itself in black for test purpose) but it
>> is stuck in the bottom-left corner of the scroll view ! Very
>> problematic and making my scroll view unusable.
>>
>>
>>
>> What is the correct way to add a document view to an
>> NSScrollView ? By the way, I don't want to subclass anything else
>> that my custom class. Because standard NSScrollView is used in a
>> lot of standard objects (NSTableView for instance) without
>> subclassing and that it works perfectly. So there IS a solution to
>> have it handle its document view correctly.
>>
>>
>>
>> Thanks for your help,
>>
>>
>>
>> Eric.
>> _______________________________________________
>> Do not post admin requests to the list. They will be ignored.
>> Cocoa-dev mailing list (<Cocoa-dev...>)
>> Help/Unsubscribe/Update your Subscription:
>> http://lists.apple.com/mailman/options/cocoa-dev/eric.morand%
>> 40mac.com
>>
>> This email sent to <eric.morand...>
>>
>>
>
>
-
This subject is really a FAQ.
The Quartz coordinate system used in Mac OS X has the origin in the
lower left corner just like Postscript, PDF, and every math textbook
that contains a graph.
Western languages and historical CRT electron beams start in the
upper left corner of the display and scan left to right down the
display.
I regret that "Cocoa Programming" does not contain more information
on this particular subject.
Placing an arbitrary view so that its top left corner corresponds to
the top left cornet of a clip view [content view of a scroll view]
that contains it is similar to the problem of centering an arbitrary
view in a clip view.
I usually set the document view to be a flipped NSView instance and
then add my custom (not flipped) view as a sub-view of the document
view. The document view can also be used to center the custom view,
provide margins, etc.
Here is another solution that actually replaces the clip view:
http://www.bergdesign.com/missing_cocoa_docs/nsclipview.html
Here is a random sampling of the previous times this question was asked:
http://www.cocoabuilder.com/archive/message/2003/8/1/92472
http://www.cocoabuilder.com/archive/message/2003/10/30/1527
http://www.cocoabuilder.com/archive/message/2005/6/27/140185 -
I just whipped up a little example of exactly what the OP wants:
Custom view full of controls created in IB and programatically added
to a scroll view so that the custom view stays in the top left corner
of the scroll view. Just for fun, I also include a mode to center
the custom view in the scroll view.
Send email to me and I will provide a 52K sample project to anyone
who asks. -
Thanks Erik !
I've sent you a private email.
Another member of the list (Cameron) also hinted that I could
subclass NSClipView so that my subclass returns YES to isFlipped. In
fact, it works very well too.
Again, thanks to both of you,
Eric.
Le 13 août 05 à 04:22, Erik Buck a écrit :
> I just whipped up a little example of exactly what the OP wants:
> Custom view full of controls created in IB and programatically
> added to a scroll view so that the custom view stays in the top
> left corner of the scroll view. Just for fun, I also include a
> mode to center the custom view in the scroll view.
>
> Send email to me and I will provide a 52K sample project to anyone
> who asks.
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Cocoa-dev mailing list (<Cocoa-dev...>)
> Help/Unsubscribe/Update your Subscription:
> http://lists.apple.com/mailman/options/cocoa-dev/<eric.morand...>
>
> This email sent to <eric.morand...>
>
