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Refresh Label of a Shape (Extended ShapeExample) [message #222420]

Mon, 04 September 2006 12:54

Eclipse User

Originally posted by: tobias.brueggendick.prostep.com

Hello,

i'm extending the ShapeExample ATM. Now i want to have a label which
includes the text of a shape. The Text must be in the middle of the shape
and here's the problem. At the creation it is no problem. When the Shape is
moved it is too no problem, but when the shape is only resize there the
label isn't anymore in the middle. My calculations for the lable are:

private void setLabelbounds() {
Label temp = (Label) getFigure().getChildren().get (0);
Rectangle bounds = this.getFigure().getBounds();
int y = bounds.y + (bounds.height - 25) / 2;
temp.setLocation(new Point(bounds.x, y));
temp.setSize(bounds.width, 25);
temp.revalidate();
}

I call this method in refreshVisuals().

As anybody an idea or can help me?

Best Regards
Tobias

Re: Refresh Label of a Shape (Extended ShapeExample) [message #222427 is a reply to message #222420]

Tue, 05 September 2006 09:27

Eclipse User

If the text has to be in the middle of the shape, why don't you use some
supplied layout to position it?

If you want to call the set location manually, you can try to put the
code in the "handleBoundsEvent" method (that should get called whenever
the model changes the bounds and fire a "BOUNDS" event). Note that the
event stuffs I am talking about here is in relation with the example
SchemaEditor, not something done automatically in GEF.

Nhu Le.

Tobias Brüggendick wrote:
> Hello,
>
> i'm extending the ShapeExample ATM. Now i want to have a label which
> includes the text of a shape. The Text must be in the middle of the shape
> and here's the problem. At the creation it is no problem. When the Shape is
> moved it is too no problem, but when the shape is only resize there the
> label isn't anymore in the middle. My calculations for the lable are:
>
> private void setLabelbounds() {
> Label temp = (Label) getFigure().getChildren().get (0);
> Rectangle bounds = this.getFigure().getBounds();
> int y = bounds.y + (bounds.height - 25) / 2;
> temp.setLocation(new Point(bounds.x, y));
> temp.setSize(bounds.width, 25);
> temp.revalidate();
> }
>
> I call this method in refreshVisuals().
>
> As anybody an idea or can help me?
>
> Best Regards
> Tobias
>
>

Re: Refresh Label of a Shape (Extended ShapeExample) [message #222442 is a reply to message #222427]

Tue, 05 September 2006 09:51

Eclipse User

Originally posted by: tobias.brueggendick.prostep.com

I found a other solution but i had the tip of using some other Layout in
back of my mind. My Solution is relative simple. For every Figure i use i
create a label in the Figure itself. Every Figuer i want to have a label
in the middle of it, has a variable of the Type Label (Draw2d). Then the
label is initialized in the Method fillShape, there i set the bounds by
getbounds() of the figure.
At least there was one Problem. When i resize the figure a new Label is
created. The solution again was simple. I initialise the label only once
by requesting if the variable is null or not. If it is initialized it can
never be null. Voila now every Shape Display his name in the middle of its
figure. I even don't need to change my functions for DirectEdit which i
created before.

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