Get scrollbars to show when MeasureUnit is pixel - Diagramming Components

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Get scrollbars to show when MeasureUnit is pixel (Read 4377 times)

jtexter3 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 9 Joined: May 28^th, 2008	Get scrollbars to show when MeasureUnit is pixel May 28^th, 2008 at 5:01pm	Print Post
	I have a FlowChart.NET component as the main control in a MdiChild form, and I have MeasureUnit set to Pixel. I have multiple nodes on the diagram which are roots of trees. Whenever I drag the root over so that the child nodes are not visible, the scroll bars do not show up automatically. I have tried many solutions, but have not been able to get them to show. Is this a bug? Or do I need to add some magic when I have MeasureUnit set to Pixel?


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Get scrollbars to show when MeasureUnit is pix Reply #1 - May 28^th, 2008 at 5:18pm	Print Post
	Set a larger Diagram.Bounds value, or enable AutoResize. I hope that helps, Stoyan


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jtexter3 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 9 Joined: May 28^th, 2008	Re: Get scrollbars to show when MeasureUnit is pix Reply #2 - May 28^th, 2008 at 5:29pm	Print Post
	Okay, I did this by using the following code: RectangleF diagramBounds = ScriptDiagram.Bounds; diagramBounds.Width = Screen.PrimaryScreen.Bounds.Width; diagramBounds.Height = Screen.PrimaryScreen.Bounds.Height; ScriptDiagram.Bounds = diagramBounds; That gets the scroll bars to show up, but if drag items out of the viewable region, the scoll bar does not update. If I add a call to ResizeToFitAllItems, then the scroll bars disappear all together.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Get scrollbars to show when MeasureUnit is pix Reply #3 - May 28^th, 2008 at 5:38pm	Print Post
	Don't the scrollbars update if you set AutoResize to AllDirections or RightAndDown, and then drag a node?


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jtexter3 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 9 Joined: May 28^th, 2008	Re: Get scrollbars to show when MeasureUnit is pix Reply #4 - May 28^th, 2008 at 6:59pm	Print Post
	No, they do not. I am using ControlNodes, and handling the dragging logic myself by adjusting the location of the node on the form. I suppose this is what's causing the issue. Is there a function I can call after I relocated a node to get the scroll bars to update?


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Get scrollbars to show when MeasureUnit is pix Reply #5 - May 29^th, 2008 at 7:28am	Print Post
	AutoResize and ResizeToFitItems should work, as long as ControlNode.Bounds corresponds to the hosted control's Location. If you are setting Location yourself, are you also updating the node's Bounds? Stoyan


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jtexter3 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 9 Joined: May 28^th, 2008	Re: Get scrollbars to show when MeasureUnit is pix Reply #6 - May 29^th, 2008 at 1:23pm	Print Post
	Yes, I am. The code I"m using to move the control is: RectangleF bounds = node.Bounds; bounds.Location = newLocation; node.Bounds = bounds;


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Get scrollbars to show when MeasureUnit is pix Reply #7 - May 29^th, 2008 at 1:33pm	Print Post
	Have you added the child nodes to the diagram? They might be drawn on screen as a part of the tree group, but if you haven't added them to Diagram.Nodes, they will be ignored when calculating the new diagram size. Stoyan


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jtexter3 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 9 Joined: May 28^th, 2008	Re: Get scrollbars to show when MeasureUnit is pix Reply #8 - Jun 24^th, 2008 at 1:14pm	Print Post
	I'm still having this issue. If I add an item at the end that goes off the screen, the scroll bar shows up correctly. However, whenever I move the root of the tree where child nodes are outside of the viewable area, the scrollbars do not show up. Although I'm adjusting the Bounds of the root node, and the child nodes are being drawn correctly, it appears their bounds are not being updated, or the diagram is not getting the correct notifications from Arrange to show the scroll bars


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jtexter3 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 9 Joined: May 28^th, 2008	Re: Get scrollbars to show when MeasureUnit is pix Reply #9 - Jun 24^th, 2008 at 1:30pm	Print Post
	Okay, I figured it out. After moving the control, I wasn't calling Arrange on the various tree layout objects. Once I did that, everything is working as expected.


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jtexter3 YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 9 Joined: May 28^th, 2008	Re: Get scrollbars to show when MeasureUnit is pix Reply #10 - Jun 30^th, 2008 at 2:14pm	Print Post
	It turns out this still isn't resolved. If I have a link from a child node to another node in the viewable area, then the scroll bars show up. But if I only have a single tree layout, it does not work. If I move the root of the tree, do I need to update the bounds for all child nodes as well?


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: Get scrollbars to show when MeasureUnit is pix Reply #11 - Jun 30^th, 2008 at 2:56pm	Print Post
	Usually moving the root node does not move the child nodes, unless you have used AttachTo to create a group. After moving the root, you could reapply TreeLayout to move the children as well. After applying a layout, call ResizeToFitItems to update the diagram.Bounds.


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