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Drawing blocks with predefined inputs/outputs [message #519572]

Tue, 09 March 2010 11:06

Cedric Moonen

Messages: 274
Registered: August 2009

Senior Member

Hello,

I am currently investigating if GMF would be a good choice to develop a specific type of editor.

In this editor, I have a certain types of blocks which can be dragged on the canvas. Each block type has a specific number of inputs and outputs. The user can then link inputs/outputs of a block to other blocks on the canvas.

The number (and name and type) of the inputs/ouptuts are fixed and depends on the block which is selected.
It is something similar as a digital electronic diagram in which you can add components and link them together.

Do you think GMF could be used to realize something like that without too much 'hacking' ?

The point which is not clear for me is how to be able to add "complex" elements to a diagram (the blocks + the inputs/outputs) and forbid the user to delete the inputs/outputs of the block.

Thanks

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Re: Drawing blocks with predefined inputs/outputs [message #520386 is a reply to message #519572]

Fri, 12 March 2010 08:26

Ali Koudri

Messages: 118
Registered: July 2009

Senior Member

Totally, GMF does it perfectly with really few changes. Actually, I did
the same think and I just had to add one line of code for the placement
of the port relatively to its parent.

Le 09/03/2010 12:06, C a écrit :
> Hello,
>
> I am currently investigating if GMF would be a good choice to develop a
> specific type of editor.
>
> In this editor, I have a certain types of blocks which can be dragged on
> the canvas. Each block type has a specific number of inputs and outputs.
> The user can then link inputs/outputs of a block to other blocks on the
> canvas.
>
> The number (and name and type) of the inputs/ouptuts are fixed and
> depends on the block which is selected.
> It is something similar as a digital electronic diagram in which you can
> add components and link them together.
>
> Do you think GMF could be used to realize something like that without
> too much 'hacking' ?
>
> The point which is not clear for me is how to be able to add "complex"
> elements to a diagram (the blocks + the inputs/outputs) and forbid the
> user to delete the inputs/outputs of the block.
>
> Thanks

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