[Pharo-project] Canvas transform bug when rendering text?

Stéphane Ducasse stephane.ducasse at inria.fr
Fri Apr 9 02:51:27 EDT 2010


thanks!

PS: I will integrate some other fixes when back to the garage later today....
Got stuck on the highway without gaz :) ... yesterday. 
>>> 
> 
> David, Lukas, whomever else it may concern.
> 
> Of course I turned out to be (partly) wrong when looking into it.
> Transform does indeed not work with alpha, but not because of bugs in WarpBlt as I assumed, but because FormCanvas always uses the Paint rule when rotating...
> Try the attached code, and you should get better results. (you probably want to use smoothing > 1 if displaying text with rotation other than a multiple of 90 degrees).
> 
> This seems to be more of a generic problem though, looking at the number of places a= 32 ifTrue: [] check is made, I'll try to come up with a more consistent solution for a system-wide patch. (which amongst other things would also fix the black border appearing around a window while zooming back to old position when you drag and drop it outside main window)
>  
> Cheers,
> Henry
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