Generating Scrolling Text
Generating Scrolling Text
- Subject: Generating Scrolling Text
- From: Philip Dow <email@hidden>
- Date: Tue, 20 Dec 2005 22:52:01 +0100
I'm looking to generate some scrolling text in a view. No scroll bars
are involved. Rather, I'd like to begin the text at the bottom of the
view and scroll it upwards, eventually fading it out at the top and
restarting when finished. Basically what you see in the iTunes about
box.
What's the best way to do this? I'm thinking of using a custom
nsview. I would render my attributed string into an instance variable
nsimage either at init or some other point prior to drawing. A timer
would fire calling a method to change the dimensions of a rect which
I would then use as the source rect for compositing the image in the
view's drawInRect method. The sounds pretty good to me, but I don't
know if it's the best or most efficient way. Is there a better?
Plus, just to be sure, I should be able to draw my attributed string
into the image as long as I lock focus on it, right?
-Phil
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