Re: Ticker Style Scrolling Text
Re: Ticker Style Scrolling Text
- Subject: Re: Ticker Style Scrolling Text
- From: douglas welton <email@hidden>
- Date: Mon, 3 May 2010 16:25:59 -0400
Erik,
If you haven't checked out Quartz Composer, do so. If my memory is correct, the QCTV sample code includes a news ticker that may be exactly what you are looking for.
regards,
douglas
On May 3, 2010, at 3:59 PM, Joachim Deelen wrote:
> Hi Erik,
>
> I think one way to go would be CoreAnimation ... At least I'm using it in my iTunes Menubar Controller Playwatch.
>
> CATextLayer, CAScrollLayer and CABasicAnimation are the Classes that might be helpful. But CoreAnimation is rather complex.
>
> There might be ways to implement it with a "normal" NSView contained in a NSScrollView. And yes, you would have to implement at least one custom NSView.
>
> regards,
> Joachim
>
> http://www.aquarius-software.de/AQUARIUS-software_en/PlaywatchFeatures.html
>
>
> Am 03.05.2010 um 00:58 schrieb Erik Benoist:
>
>> I am writing a small NSStatusItem which displays a NSString in the menu bar and supplies a series of NSMenuItems. As the text to be displayed is occasionally longer than would be permitted on the Menu Bar I would like to animate the text in a Stock Ticker style scrolling animation. Much like you'd see in iTunes when a song is too long to be displayed or how the modem connect NSStatusItem will scroll the words "dialing... authentication...". I tried to simply write text to the menu bar using a Timer writing one character at a time, but the result isn't smooth and due to spacing in between letters can be variable in how much it moves each iteration.
>>
>> I suspect that a custom NSView is set to the NSStatusItem, but I am at a complete loss as to how to pull this off. Any examples of how to:
>> 1. Properly animate the text.
>> 2. Attach the resulting animation to the menu bar
>>
>> would be greatly appreciated. I have googled around extensively and have yet to find a solid example or clue.
>>
>> Thank you,
>> Erik Benoist_______________________________________________
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