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Difference between revisions of "Diagram Developer Documentation"
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Revision as of 08:57, 19 May 2016
Snap To Grid Enhancement
By Default Snap To Grid allows to snap on the grid using the top left corner of the figure (in case of Rctangle).
To improve this behavior, you should subclass the GMF Class org.eclipse.gmf.runtime.diagram.ui.tools.DragEditPartsTrackerEx or one of its superclass. Then you must ovveride the method org.eclipse.gef.EditPart.getDragTracker(Request) in the edit part concerned by your specific SnapToGrid.
In Papyrus we change this class to be able to snap on the 4 corners, the four middle and the center of a rectangle. Have a look to these classes to get examples.
- org.eclipse.papyrus.infra.gmfdiag.common.editpart.NodeEditPart.java
- org.eclipse.papyrus.infra.gmfdiag.common.snap.PapyrusDragBorderNodeEditPartTrackerEx.java
- org.eclipse.papyrus.infra.gmfdiag.common.snap.PapyrusDragEditPartsTrackerEx.java
- org.eclipse.papyrus.uml.diagram.common.editparts.BorderNodeEditPart.java
To improve the connection of the endPoint of the link, Papyrus provides its own EditPolicy (in ConnectionEditPart) : org.eclipse.papyrus.infra.gmfdiag.common.editpolicies.PapyrusConnectionEndEditPolicy.PapyrusConnectionEndEditPolicy, with the role EditPolicy.CONNECTION_ENDPOINTS_ROLE (see this class for details)
User tricks
ALT allows to ignore Snap To Grid when your are moving an element
Delete Behaviors (added the 19th of May 2016)
- Define Behavior for DEL and Shift DEL
| Delete From Model (DEL) | Delete From Diagram (SHIFT+DEL) | Example | Delete From Model Action (DEL) | |
|---|---|---|---|---|
| View with semantic | Delete | Hide | Class | |
| View with no semantic, but representing a feature | Delete: remove the reference from the feature | Hide | Comment Link, Constraint Links (context and contrainedElement), DurationObservation and TimeObservation Link | remove the link and remove the reference from the feature |
| View with no semantic | Hide | Hide | ? | remove the link |
| View with semantic Read Only | Forbidden | Hide | PimitivesTypes::Integer | |
| Metaclass All Diagram (Read-Only) | Hide | Hide | Import Metaclass (Profile Diagram) | keep the element imported, destroy the view o the metaclass |