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FlowLayout, Arrange of DiagramItemCollection (Read 3380 times)

kai-uwe.zoland YaBB Newbies Offline Posts: 18 Joined: Sep 5^th, 2008	FlowLayout, Arrange of DiagramItemCollection Mar 15^th, 2010 at 2:17pm	Print Post
	I use the FlowLayout.Arrange(Diagram, DiagramItemCollection) method to arrange parts in a diagram. As input in the DiagramItemCollection I have just some nodes, that are connect with the MainConnectorId. The GroupEndNode and the GroupStartNode are part of the collection. For some groups it works fine and for other groups the GroupStartNode is not arranged on the same height as the rest of the group. I tested it with a small controlflow. If I use the normal Layout.Arrange(Diagram) method, the layout looks fine. If I put this controlflow to a group and give all these nodes and links as a DiagramItemCollection to the arrange method, the result is different and the nodes are not placed on the same height. Can you give some advice, please? I can send you also a small application, to show you the problem. Thanks for your help. Kai-Uwe


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: FlowLayout, Arrange of DiagramItemCollection Reply #1 - Mar 15^th, 2010 at 7:06pm	Print Post
	Please send the sample to support@mindfusion.eu. Stoyan


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: FlowLayout, Arrange of DiagramItemCollection Reply #2 - Mar 23^rd, 2010 at 9:39am	Print Post
	Set KeepGroupLayout = false before calling flowLayout.Arrange(diagram, _itemsToArrange) in the arrangeGroup method: flowLayout.KeepGroupLayout = false; flowLayout.Arrange(diagram, _itemsToArrange); Otherwise Arrange does nothing at all if called for group's items while KeepGroupLayout is enabled. Once all groups are arranged, set KeepGroupLayout = true and call Arrange for the whole diagram. I hope that helps, Stoyan


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kai-uwe.zoland YaBB Newbies Offline Posts: 18 Joined: Sep 5^th, 2008	Re: FlowLayout, Arrange of DiagramItemCollection Reply #3 - Mar 25^th, 2010 at 11:19am	Print Post
	Hi, the advice with KeepGroupLayout helped for the simple case. But now I build a more complex process and have some issues. I will send you a further version of the testapplication. Problem 1: I have a process, that is on three different lanes. The nodes on each lane are together in one group. First I call the arrange for each group and afterwards the arrange for the diagram with KeepGroupLayout = true. After the arrange, the firstnode of the groups is not on the same height as the rest of the group. I have the impression, that the arrange of one group also has influence on the first nodes of the other groups. All nodes outside the group, that is arranged, have ignorelayout set to true. Can you please check this. Problem 2: I get an exception from the flowlayout arrange method: �Width and height can not have negative values� To get this exception, try the Arrange Case 3 in the testapplication. I also got this exception, when I moved the nodes before any arrangement with the DiagramNode.Move method to some new positions. Let me know, if you need any further information. Thanks Kai-Uwe


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: FlowLayout, Arrange of DiagramItemCollection Reply #4 - Mar 26^th, 2010 at 2:21pm	Print Post
	Hi, This version should fix the problem - https://mindfusion.eu/_beta/wpfdiag231_flow.zip Stoyan


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kai-uwe.zoland YaBB Newbies Offline Posts: 18 Joined: Sep 5^th, 2008	Re: FlowLayout, Arrange of DiagramItemCollection Reply #5 - Mar 29^th, 2010 at 1:30pm	Print Post
	Thank you, it works. A question about the link routing between the groups. How can I ensure, that the first and last segment of these links always have horizontal orientation? I tried to set CascadeOrientation of these links to horizontal, but that did not help. Thank you Kai-Uwe


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