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Roassal: having changes in shapes

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jfabry

Roassal: having changes in shapes

Hola,

for my visualization, I want to be able to change the color of a shape after the view has been opened, depending on a given condition. So I wrote something like below, where the instvar lastview holds the view that was opened.

highlightNode: aName
|node|
node := lastview elementFromModel: aName.
node isNil ifFalse: [
node shape color: (Color red).
lastview signalUpdate.]

Sadly, I do not see the shape changing color to red. What can I do to have this working?

Thanks in advance,

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Johan Fabry - http://pleiad.cl/~jfabry
PLEIAD lab - Computer Science Department (DCC) - University of Chile

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PabloEstefo

Re: Roassal: having changes in shapes

Hi Johan,

On Apr 23, 2014, at 15:48, Johan Fabry <[hidden email]> wrote:

Hola,

for my visualization, I want to be able to change the color of a shape after the view has been opened, depending on a given condition. So I wrote something like below, where the instvar lastview holds the view that was opened.

highlightNode: aName
|node|
node := lastview elementFromModel: aName.
node isNil ifFalse: [
node shape color: (Color red).
lastview signalUpdate.]

Sadly, I do not see the shape changing color to red. What can I do to have this working?

You could try by doing:

highlightNode: aName

|node|

node := lastview elementFromModel: aName.

node isNil ifFalse: [

node shape color: (Color red).
node update].

Here’s a small example:

|node lastview|

lastview := RTView new.

lastview addAll: (RTBox elementsOn: #(1 2 3 4)).

node := lastview elementFromModel: 3.

node isNil ifFalse: [

node shape color: (Color red).

node update.].

RTHorizontalLineLayout on: lastview elements.

lastview open.

Does it help you?

Cheers,

Pablo

Thanks in advance,

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Johan Fabry - http://pleiad.cl/~jfabry
PLEIAD lab - Computer Science Department (DCC) - University of Chile

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jfabry

Re: Roassal: having changes in shapes

Thanks, Pablo! It works like a charm, even other changes, e.g. with edges, work :-)
I had to add a lastview signalUpdate because the diagram was not redrawing until I clicked on it. (The window did not have focus).

On Apr 23, 2014, at 4:13 PM, Pablo Estefó <[hidden email]> wrote:

> highlightNode: aName
> |node|
> node := lastview elementFromModel: aName.
> node isNil ifFalse: [
> node shape color: (Color red).
> node update].
>
>
> Here’s a small example:
>
> |node lastview|
> lastview := RTView new.
> lastview addAll: (RTBox elementsOn: #(1 2 3 4)).
> node := lastview elementFromModel: 3.
> node isNil ifFalse: [
> node shape color: (Color red).
> node update.].
> RTHorizontalLineLayout on: lastview elements.
> lastview open.
>
> Does it help you?
>
> Cheers,
> Pablo

---> Save our in-boxes! http://emailcharter.org <---

Johan Fabry - http://pleiad.cl/~jfabry
PLEIAD lab - Computer Science Department (DCC) - University of Chile

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