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Adding animation to Button [message #540325]

Tue, 15 June 2010 16:03

John

Messages: 3
Registered: June 2010

Junior Member

I am exploring the idea of adding animation to a button when the mouse goes over it, or when it is clicked on.

The approach I have is to use Display.timeExec() to call redraw on the targeted button, then use a custom redraw code in a PaintListener to apply the animation.

However, the constant redraw() call appears to be expensive - Just calling redraw() repeatedly without any repaint logic will use up 10-20% of my system (3GHz core2 duo).

Is there any reasonable way to implement animation without incurring an big performance hit?

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Re: Adding animation to Button [message #540415 is a reply to message #540325]

Wed, 16 June 2010 05:42

Vijay Raj

Messages: 608
Registered: July 2009

Senior Member

Instead of drawing on the control draw on an image and update that image on the control...

try this snippet

http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet141.java?view=co

u can strip out all the unnecessary code and add what u require to make the code simpler....

---------------------
why, mr. Anderson, why, why do you persist?
Because I Choose To.
Regards,
Vijay

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