BalloonCanvas question

Karl karl.ramberg at
Mon Nov 20 12:12:07 UTC 2006

Bert Freudenberg wrote:
> On Nov 19, 2006, at 12:41 , Hilaire Fernandes wrote:
>> Bert Freudenberg a écrit :
>>> On Nov 19, 2006, at 10:22 , Hilaire Fernandes wrote:
>>>> What is the use of the ifNoTransformWithIn: method?
>>>> When I use the BalloonCanvas within a morph drawOn:  method, the 
>>>> ifNoTransformWithIn: is forcing the use of the super graphic 
>>>> method, so no anti-aliasing take place.
>>>> I am sure there are pretty good reason, but I don't get it.
>>> An axis-aligned rectangle can be drawn much faster using BitBlt than 
>>> using Balloon. That case is detected by the method.
>> Ok, so it is a feature. However in that case the AA is off and there 
>> are no way to get it back, right?
> BitBlt does no AA, right.
I did some hacking a few years ago and did some overriding of the super 
calls and did get anti alias with a speed penalty.


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