ControlMouseAction vs ModificationStart problem - Diagramming Components

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ControlMouseAction vs ModificationStart problem (Read 4455 times)

Necroman YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 49 Joined: Jul 27^th, 2009	ControlMouseAction vs ModificationStart problem Jul 27^th, 2009 at 2:54pm	Print Post
	I need AutoHandles behavior - the possibility to move nodes on a first click- click+move does select and instant moving, but if I want to modify some link, that is over a node header or over any other link, focus is switched to underlying control and that something I don't want. How to do that - instant click+move and not automatic selection of underlying nodes? thanks Basically I need onmousedown to cause selection, not mouseover event. Also if any other item is selected and I am clicking on it, no other underlying item should be selected in this case - simple. Also, is there a method in DiagramView for hittesting if some nodes/links are under current mouse cursor? Any help will be appretiated.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: ControlMouseAction vs ModificationStart proble Reply #1 - Jul 27^th, 2009 at 3:27pm	Print Post
	What happens if you also set HitTestPriority = ZOrder?


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Necroman YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 49 Joined: Jul 27^th, 2009	Re: ControlMouseAction vs ModificationStart proble Reply #2 - Jul 27^th, 2009 at 3:47pm	Print Post
	Well, that solved half of my problem, thanks. The other problem is quite complicated to explain: Let's have parent node and two child nodes, also two links from parent to child. Both links starts at the same point in parent node. If I select the bottom link an I want to change it's parent location, I cant. Even with ZOrder priority the topmost link is selected? The ideal priority in my opinion should be selected objects > objects in z order > bottom Also SelectionOnTop property is ignored, when I set it to true, strange.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: ControlMouseAction vs ModificationStart proble Reply #3 - Jul 27^th, 2009 at 4:12pm	Print Post
	We'll change the priority for the next release. Now you might try one of the following: * handle MouseMove and set ModificationStart = SelectedOnly if diagram.ActiveItem.HitTestHandle() returns some handle index at the current mouse position. or * set DiagramLink.HandlesStyle = Custom, handle the HitTestHandles event and return -1 if e.Link is not selected but diagram.ActiveItem is under the mouse pointer.


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Necroman YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 49 Joined: Jul 27^th, 2009	Re: ControlMouseAction vs ModificationStart proble Reply #4 - Jul 28^th, 2009 at 9:06am	Print Post
	I've tried these methods, but non of them worked. It looks like the other link is pre-selected(diagram.ActiveItem is changed) when mouse cursor reaches some near distance to it, before I even reach the link node. I guess the right approach is to keep original link selected, when cursor is near, or when calculating proximity to nearest object keep the selected one on the first position.


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Stoyo God Member Offline MindFusion support Posts: 13230 Joined: Jul 20^th, 2005	Re: ControlMouseAction vs ModificationStart proble Reply #5 - Jul 28^th, 2009 at 10:03am	Print Post
	This worked for me: Code private void diagramView_MouseMove(object sender, MouseEventArgs e) { PointF mousePos = diagramView.ClientToDoc(e.Location); int activeItemHandle = -1; if (diagram.ActiveItem != null) diagram.ActiveItem.HitTestHandle(mousePos, ref activeItemHandle); diagramView.ModificationStart = activeItemHandle == -1 ? ModificationStart.AutoHandles : ModificationStart.SelectedOnly; } Stoyan


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Necroman YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 49 Joined: Jul 27^th, 2009	Re: ControlMouseAction vs ModificationStart proble Reply #6 - Jul 28^th, 2009 at 12:07pm	Print Post
	Well, that helped, thanks I didn't used the ClientToDoc transformation before...


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