Re: How to get a scroll view to recognize overflow on a custom view?
On Mar 23, 2009, at 02:33, Ken Tozier wrote: The new issue though is that when I set the size of the content view (document view?) the scroller's size changes to the new size of the content. I've checked and rechecked to make sure all the autosize parts are set up in IB correctly, but no matter what I do, I can't both set the size of the scroller content view and preserve the frame of the scroll view. At this point, step 1 is probably to log the frame rects of the scroll view, clip view and document/content view after the resize is finished, and find out for sure which one is wrong. Step 2 could be to register to receive frame-changed notifications from each of the views, and watch the sequence of changes to see where it goes wrong. Chances are, things aren't happening in the order your code thinks they are. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to get a scroll view to recognize overflow on a custom view?
Thanks Quincey this helped. I'm getting scroll bars now. The new issue though is that when I set the size of the content view (document view?) the scroller's size changes to the new size of the content. I've checked and rechecked to make sure all the autosize parts are set up in IB correctly, but no matter what I do, I can't both set the size of the scroller content view and preserve the frame of the scroll view. Here's how I set up the autosize options in IB Scroll view options: outside: top, left, bottom, right Inside scale width, scale height Content view options: Outside: top, left, right Inside: scale width In my code, the content view recalculates it's height when the contents are refreshed with new data. The new data comes from the result of database searches and I display te results in the content view. When I change the height, the scroll view always changes as well. How can I resize the contents of a scroll view without also changing the size of the scroll view that contains it? On Mar 23, 2009, at 1:50 AM, Quincey Morris wrote: If scroll bars don't appear, there are 2 likely causes: -- You are failing to set your custom view's "depth" properly. The depth is determined by your custom view's frame. Make sure you're setting the frame to the correct height (and not, for example, setting just the bounds to the desired height). -- The autoresize flags for your custom view are causing it to be resized because the enclosing scroll view is being resized as part of the window setup. If you want to control the view frame height yourself, make sure the vertical autoresize widget for the custom view in IB is not set to change the view height. You may want to also turn off the scroll view's "resizes subviews automatically", unless you want the width of your view to match the scroll view automatically. Note that the non-appearance of the scroll bar most likely results from the above in combination with the "hides scroll bars automatically" option for the scroll view in IB. If you uncheck that, you should see the scroll bar, but the scroll bar would then be inactive if you don't maintain the view height correctly. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to get a scroll view to recognize overflow on a custom view?
On Mar 22, 2009, at 21:12, Ken Tozier wrote: Hi I have a custom view inside a scroll view and all works nicely except when the custom view's contents exceeds the depth of the scroll view. The scroll bars don't appear. I created the scroll view in IB from a standard widget and did nothing more than set the class of default content view to my custom class. I read the NSScrollView docs and the companion "Scroll View Programming Guide for Cocoa" and notice that neither the contentView nor the documentView are available from inside IB. I looked at the different IB data views with scroll bars, checking what their outlets are and tried setting mine up the same, but they must be doing something behind the scenes. What do I need to do to get the scroll view to notice when my custom view exceeds it's depth? The "document view" *is* available from inside IB. It's the same thing as what you called the "default content view". IB only suppresses explicit display of the clip view. If scroll bars don't appear, there are 2 likely causes: -- You are failing to set your custom view's "depth" properly. The depth is determined by your custom view's frame. Make sure you're setting the frame to the correct height (and not, for example, setting just the bounds to the desired height). -- The autoresize flags for your custom view are causing it to be resized because the enclosing scroll view is being resized as part of the window setup. If you want to control the view frame height yourself, make sure the vertical autoresize widget for the custom view in IB is not set to change the view height. You may want to also turn off the scroll view's "resizes subviews automatically", unless you want the width of your view to match the scroll view automatically. Note that the non-appearance of the scroll bar most likely results from the above in combination with the "hides scroll bars automatically" option for the scroll view in IB. If you uncheck that, you should see the scroll bar, but the scroll bar would then be inactive if you don't maintain the view height correctly. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to get a scroll view to recognize overflow on a custom view?
Yes, the scroll bars never appeared in my case as well. That's why I resorted to the workaround. Good luck. On 23/03/2009, at 4:17 PM, Ken Tozier wrote: I think my issue is slightly different. The scroll bars never appear, no matter how much overflow there might be. I generally don't have a problem using table views as they seem to have some built-in mechanism for notifying the scroll view that they are deeper than it is. I'm trying to make my custom view do what table views are doing. I was hoping to do it all in IB but it's looking like I'll have to do the notifications programatically. On Mar 23, 2009, at 1:06 AM, Ron Fleckner wrote: I may be wrong, but I came across similar scrollview behaviour in Tiger. IIRC, I asked about it here on cocoa-dev and got back that it was a known bug. As I say, not sure if this is still the case. My workaround was to uncheck the 'has scroll bar' in IB, then, in my case: id scrollview = [[tableView superview] superview]; [scrollview setHasVerticalScroller:YES]; [scrollview display]; The behaviour I was getting in my table view was that if you/the user selected a visible row, then arrow keyed down, it would continue past the bottom of the window but no (vertical) scroll bar would show and you couldn't see what was actually selected. HTH, Ron ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to get a scroll view to recognize overflow on a custom view?
I think my issue is slightly different. The scroll bars never appear, no matter how much overflow there might be. I generally don't have a problem using table views as they seem to have some built-in mechanism for notifying the scroll view that they are deeper than it is. I'm trying to make my custom view do what table views are doing. I was hoping to do it all in IB but it's looking like I'll have to do the notifications programatically. On Mar 23, 2009, at 1:06 AM, Ron Fleckner wrote: I may be wrong, but I came across similar scrollview behaviour in Tiger. IIRC, I asked about it here on cocoa-dev and got back that it was a known bug. As I say, not sure if this is still the case. My workaround was to uncheck the 'has scroll bar' in IB, then, in my case: id scrollview = [[tableView superview] superview]; [scrollview setHasVerticalScroller:YES]; [scrollview display]; The behaviour I was getting in my table view was that if you/the user selected a visible row, then arrow keyed down, it would continue past the bottom of the window but no (vertical) scroll bar would show and you couldn't see what was actually selected. HTH, Ron ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: How to get a scroll view to recognize overflow on a custom view?
On 23/03/2009, at 3:12 PM, Ken Tozier wrote: Hi I have a custom view inside a scroll view and all works nicely except when the custom view's contents exceeds the depth of the scroll view. The scroll bars don't appear. I created the scroll view in IB from a standard widget and did nothing more than set the class of default content view to my custom class. I read the NSScrollView docs and the companion "Scroll View Programming Guide for Cocoa" and notice that neither the contentView nor the documentView are available from inside IB. I looked at the different IB data views with scroll bars, checking what their outlets are and tried setting mine up the same, but they must be doing something behind the scenes. What do I need to do to get the scroll view to notice when my custom view exceeds it's depth? Hi Ken, I may be wrong, but I came across similar scrollview behaviour in Tiger. IIRC, I asked about it here on cocoa-dev and got back that it was a known bug. As I say, not sure if this is still the case. My workaround was to uncheck the 'has scroll bar' in IB, then, in my case: id scrollview = [[tableView superview] superview]; [scrollview setHasVerticalScroller:YES]; [scrollview display]; The behaviour I was getting in my table view was that if you/the user selected a visible row, then arrow keyed down, it would continue past the bottom of the window but no (vertical) scroll bar would show and you couldn't see what was actually selected. HTH, Ron ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
How to get a scroll view to recognize overflow on a custom view?
Hi I have a custom view inside a scroll view and all works nicely except when the custom view's contents exceeds the depth of the scroll view. The scroll bars don't appear. I created the scroll view in IB from a standard widget and did nothing more than set the class of default content view to my custom class. I read the NSScrollView docs and the companion "Scroll View Programming Guide for Cocoa" and notice that neither the contentView nor the documentView are available from inside IB. I looked at the different IB data views with scroll bars, checking what their outlets are and tried setting mine up the same, but they must be doing something behind the scenes. What do I need to do to get the scroll view to notice when my custom view exceeds it's depth? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
