[Cuis] Newbie question

[Juan Vuletich]

Hi Folks,

On 3/28/2015 11:26 PM, Ken.Dickey wrote:
> On Sat, 28 Mar 2015 18:47:04 -0400
> "Phil (list)"<pbpublist at gmail.com>  wrote:
>
>>> I’ve been looking up Squeak/Pharo/Cuis documentation on using layouts
>>> (which may be the issue) but have made little headway.
> Cuis layouts are different from Squeak or Pharo.  Given the changes going on, many things require some code reading and playing around.
>
> To understand Layouts and LayoutSpecs, I did simple editors for them.  They are located in the Morphic-Misc1 package at:
>    https://github.com/KenDickey/Cuis-Smalltalk-Morphic-Misc1
>
>  From the readme:
> "
> After loading this package, one can select a morph, open its menu from the halo, and edit its LayoutSpec.
> If the morph is a LayoutMorph, one can also open an editor for the LayoutMorph from the halo menu.
> "
>
> Inspecting the window submorphs should help as well.
>
> Cheers,
> -KenD

Hari, you were really close. Unfortunately, a bug in Cuis made it harder 
than needed. Besides trying Ken suggestion, also do the following:

1) Change #addToScroller: to read
addToScroller: aMorph

     scroller
         addMorph: aMorph position: 0 at 0;
         morphExtent: aMorph morphExtent

(just found a bug. This fix will be on GitHub soon)

2) Take a look at #inATwoWayScrollPane. Try the comment:

(EllipseMorph new morphExtent: 500 at 270) inATwoWayScrollPane openInHand

3) Change your code to read:
mArea := ( DragAndDropAreaMorph new color: Color white) inspect openInWorld.
scrollpane := (PluggableScrollPane new color: Color red) openInWorld .
scrollpane inspect.
gWindow := SystemWindow new.
gWindow addMorph: scrollpane.

mArea morphExtent: 800 at 800.
scrollpane addToScroller: mArea.

qEllipse := EllipseMorph new.
mArea addMorph: qEllipse.
qEllipse morphPosition: 200 at 500.

gWindow openInWorld

The change was to set the mArea extent prior to adding to the 
scroller.... Maybe we'd make InnerPluggableMorph>>#adjustExtent work! If 
you keep playing with this, and find out whow you think it should 
behave, please send us your code, for integration.

Cheers,
Juan Vuletich