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Re: moving to objects / IDL objects and object graphics [message #56271 is a reply to message #56144]

Mon, 08 October 2007 15:33

Robbie
Messages: 165
Registered: February 2006

Senior Member

I think that you should only extend a IDLgrView object if you are
really creating a new graphics object. For example a colorbar is a
graphics object because it handles how to draw a colorbar and only
that.

A movie object would take care of getting data from a source and
putting it on the screen. But, it also has to handle timer events,
buffering and redrawing tasks.

Fields of such an object might be:
1) A widget base with the timer activated
2) A widget draw with GRAPHICS_LEVEL=2
3) The IDLgrView being drawn
4) The IDLgrImage which contains the frame buffer
5) A pointer or object reference to the actual movie data

The movie object would contain an event loop to handle events from
these.
I would probably delegate 4 and 5 to a separate object again so that
you can use various sources of movie data.
You could extend your movie object to include other widget buttons for
controlling your movie.

Robbie

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[Message index]

		Re: moving to objects / IDL objects and object graphics By: David Fanning on Sat, 06 October 2007 16:48
		Re: moving to objects / IDL objects and object graphics By: Robbie on Mon, 08 October 2007 15:33

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