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how to change the transition arrow? [message #756514]

Mon, 14 November 2011 02:09

Eclipse User

hi,
i make a diagram. but the problem is when i connect to nodes the connector is a straight line. but I want to show the connector as a arrow. what should i have to do? see the following pic:
index.php/fa/6118/0/

also how to make the connector as a fullduplex connector. see the following picture.
index.php/fa/6119/0/

Attachment: 11.jpg
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Attachment: 22.jpg
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[Updated on: Mon, 14 November 2011 03:48] by Moderator

Re: how to change the transition arrow? [message #756570 is a reply to message #756514]

Mon, 14 November 2011 06:27

Eclipse User

I am new to GMF but I will try to answer your question. Please someone correct me if I am wrong.

In your Figure Descriptors, you have to first add these lines of code:

    <figures
        xsi:type="gmfgraph:PolylineDecoration"
        name="ArrowDecoration">
      <template
          x="-1"
          y="1"/>
      <template/>
      <template
          x="-1"
          y="-1"/>
    </figures>

Then, you define your descriptors with the targetDecoration or SourceDecoration with references to this figure, like this:

    <descriptors
        name="SolidLineWDstArrowFigure">
      <actualFigure
          xsi:type="gmfgraph:PolylineConnection"
          targetDecoration="//@figures.0/@figures.0"/>
    </descriptors>

This example is from the StateDiagram sample code which you can add to your own gmf by using Load Resource... menu and add:

platform:/plugin/org.eclipse.gmf.graphdef/models/stateDiagram.gmfgraph

Here are the full sample state diagram code in case you don't have it.

<?xml verion="1.0" encoding="UTF-8"?>
<gmfgraph:Canvas xmi:version="2.0"
	xmlns:xmi="http://www.omg.org/XMI"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:gmfgraph="http://www.eclipse.org/gmf/2006/GraphicalDefinition" name="StateDiagram Canvas">
  <figures
      name="ClassDiagram Figure Gallery">
    <figures
        xsi:type="gmfgraph:PolylineDecoration"
        name="ArrowDecoration">
      <template
          x="-1"
          y="1"/>
      <template/>
      <template
          x="-1"
          y="-1"/>
    </figures>
    <descriptors
        name="RoundedRectangle">
      <actualFigure
          xsi:type="gmfgraph:RoundedRectangle"
          cornerWidth="25"
          cornerHeight="25">
        <layout
            xsi:type="gmfgraph:XYLayout"/>
        <children
            xsi:type="gmfgraph:Label"
            name="RoundedRectangle_NameLabel"/>
      </actualFigure>
      <accessors
          accessor="Name"
          figure="//@figures.0/@descriptors.0/@actualFigure/@children.0"/>
    </descriptors>
    <descriptors
        name="SimpleRectangle">
      <actualFigure
          xsi:type="gmfgraph:Rectangle"
          lineKind="LINE_DASH">
        <layout
            xsi:type="gmfgraph:XYLayout"/>
        <foregroundColor
            xsi:type="gmfgraph:ConstantColor"
            value="black"/>
        <children
            xsi:type="gmfgraph:Label"
            name="SimpleRectangle_NameLabel"/>
      </actualFigure>
      <accessors
          accessor="Name"
          figure="//@figures.0/@descriptors.1/@actualFigure/@children.0"/>
    </descriptors>
    <descriptors
        name="SolidLineWDstArrowFigure">
      <actualFigure
          xsi:type="gmfgraph:PolylineConnection"
          targetDecoration="//@figures.0/@figures.0"/>
    </descriptors>
  </figures>
  <nodes
      name="StateMachine_Node"
      figure="RoundedRectangle"/>
  <nodes
      name="Region"
      figure="SimpleRectangle"/>
  <nodes
      name="State"
      figure="RoundedRectangle"/>
	  <connections
	      name="SolidLineWDstArrow"
	      figure="SolidLineWDstArrowFigure"/>
	  <labels
	      name="StateMachine_Name"
	      figure="RoundedRectangle"
	      accessor="//@figures.0/@descriptors.0/@accessors.0"/>
	  <labels
	      name="Region_Name"
	      figure="SimpleRectangle"
	      accessor="//@figures.0/@descriptors.1/@accessors.0"/>
	  <labels
	      name="State_Name"
	      figure="RoundedRectangle"
	      accessor="//@figures.0/@descriptors.0/@accessors.0"/>
	</gmfgraph:Canvas>

Re: how to change the transition arrow? [message #756587 is a reply to message #756570]

Mon, 14 November 2011 07:26

Eclipse User

Hi,

If you want to react on changes in the meta model you can override the handleNotification method in the EditPart. There you can change the decoration of the figure. Let me know if you want to do this and need further assistance.

Ralph

Re: how to change the transition arrow? [message #756633 is a reply to message #756587]

Mon, 14 November 2011 09:41

Eclipse User

Hoang... u r new???? u knew a lot....thnx for ur help....let me try....i find an idea just like urs....

Re: how to change the transition arrow? [message #756634 is a reply to message #756633]

Mon, 14 November 2011 09:42

Eclipse User

ralph....actually i am a begginer. i can't touch the raw code. u told me to go to the edit part. but its difficult for me. can i do anything from the editor?

Re: how to change the transition arrow? [message #756647 is a reply to message #756634]

Mon, 14 November 2011 10:08

Eclipse User

Hi,

it depends on what you want to do. If you want to do this on creation only you can change the gmfgraph model and do what Hoang suggested. If you want to have dynamic behaviour you need to manipulate the figure which is not a big deal. All you need to do is to set the decoration in your code.

Ralph

Re: how to change the transition arrow? [message #756772 is a reply to message #756647]

Mon, 14 November 2011 21:21

Eclipse User

done it.. i have to modify .gmfgraph. thnx guys...

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