Hi Robin,
I have no plan right now to implement zooming. If you just want the zoom
level to change abruptly, that's not hard. But to make the zooming
smooth (so that the user can track which event goes where from before to
after zooming), that's definitely not trivial.
David
Robin McEntire wrote:
> Are there any plans to implement a zooming In/Out capability? This
> would be very useful to me as I expect my users to start at a very large
> scope of a timeline, find what they're interested in, and then zoom down
> to view details.
>
> BTW, this is a great app! Some really nice work here.
>
> best, and thanks,
> robin
>
>
> Michael Nosal wrote:
>
>> On Aug 13, 2007, at 4:23 AM, Naimesh (Hotmail) wrote:
>>
>>
>>> Hello !
>>> I am new to timeline. Can anybody help me on :
>>> 1) How to Pan left and Right feature to give on button click even
>>> on the buttons kept on the page where timeline is displayed.
>>> 2) How to provide zoom In/Out feature to give on button click even
>>> on the buttons kept on the page where timeline is displayed.
>>> Please help soon on above.
>>> Thanks & Regards.
>>> Naimesh Trivedi
>>>
>>>
>> Panning is done by calling _autoScroll on a Band. Look at
>> Timeline._Band.prototype._onKeyUp. It binds the page down and page up
>> keys to call _autoScroll. It takes a number of pixels +/- and scrolls
>> the band in that direction.
>>
>> For example, you may have a link or button to pan your timeline:
>>
>> <input type="button" onclick="tl.getBand(0)._autoScroll(tl.getBand
>> (0)._timeline.getPixelLength())" value="Backwards">
>> This pans the timeline a fixed number of pixels.
>>
>> You may also call scrollToCenter on a Band. This takes a Date as its
>> parameter and will smoothly scroll the timeline to that date. This
>> allows you to scroll in exact time increments (such as +/- one month)
>> rather than by pixels.
>>
>> onclick='tl.getBand(0).scrollToCenter(new Date("9/13/2007"))' would
>> scroll the timeline to center on that date.
>>
>> Timeline doesn't currently support zooming In/Out.
>>
>> --Mike Nosal
>>
>>
>>
>>
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>>
>>
>>
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