I have vague memories messing with this code and I found it really tricky.

I tried to fix some issues with the GrabPatch and Lasso in the ObjectsTool
and didn't really succeed.
Those tools are kind of both cursor and 'image you drag' and the result was
never optimal.

Best,
Karl




On Fri, Jun 19, 2020 at 8:52 PM Thiede, Christoph <
Christoph.Thiede at student.hpi.uni-potsdam.de> wrote:

> Hi all,
>
>
> did you know the implementation of HandMorph >> #visible:?
>
>
> visible: aBoolean
>
> self needsToBeDrawn ifFalse: [ ^self ].
>
> super visible: aBoolean
>
>
> This is just bothering me as I am trying to hide my hand before I attach
> some morph to it, so it does not yet need to be drawn.
>
> Is this logic anywhere in use?
>
> I already have played with #needsToBeDrawn in the past (remember
> XmasDecorations? ;)), and it should be a protocol between WorldState and
> HandMorph, only. But I cannot find any affected sender of #visible: in
> WorldState; the only one is #restoreMorphicDisplay which does not relate
> to #needsToBeDrawn as far as I can see.
>
>
> Do you think we can nuke this override?
>
>
> Best,
>
> Christoph
>
>
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