Hi Mike,

Thanks for your comment. I agree with you that a linear representation of the 
Timeline on a scrollbar would not be helpful.

But at the same time, we need to explore additional visual cues about 
scrolling. I've been doing UI testing with Timeline and people just don't grasp 
the concepts by themselves.

Of course, in many use cases, formal or informal training will be available to 
users. But in others, they will be on their own.

My thought was more towards something both non-linear and also
non-representational. Eg have the handle on the scrollbar jump back to
the center after every use by the user. (The handle's position on the scrollbar 
would NOT show where you are on the Timeline. Or maybe only for Timelines with 
Start and Stop dates defined.)
And the way the arrow keys give a non-linear movement response the longer you 
hold them down is also useful for trying with a horiz scrollbar widget.

Regards,

Larry




________________________________
From: Michael R. Nosal <[EMAIL PROTECTED]>
To: "[email protected]" <[email protected]>
Sent: Tuesday, December 9, 2008 11:59:57 AM
Subject: Re: Inspiration: http://allofme.com/



On Dec 9, 2008, at 11:37 AM, LarryK wrote:

>
> Thanks for the useful summary Marko, I have added issue 46.
>
> Some of the below can be pretty easily added as client sw above
> Timeline. Other ideas would require more work.
>
> See comments below.
>
> Regards,
>
> Larry
>
> On Dec 9, 9:00 am, Marko <[EMAIL PROTECTED]> wrote:
>> Well, some points I found interesting:
>> - the scrollbar at the bottom (even my internet savvy collegues did
>> not recognise the dragging of the timeline :-(
>
> YUI Widgets has a scrollbar widget that could be helpful for this. I
> agree that this would be a good feature addition to Timeline.
>

The problem with using a scrollbar is that you are limited to a fixed  
width to represent the entire width of your timeline. A single-pixel  
adjustment to the scroll thumb might cause very large jumps in time on  
the timeline. Timeline already supports the ability to scroll, so I  
think a better solution would be to give the user more cues that they  
drag the timeline to scroll.

When google maps first came out, people had difficulty with the  
concept of dragging the map itself to scroll - they were so used to  
the circle of buttons around the map. But this isn't an issue any more.

The rest of the changes, with the exception of the new painter, are  
easily supported with what we have now.

--Mike



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