Hi, The reason it simple, with 3 event handlers you can control everything about your custom dragging and/or dropping you need.
The drag manager has flaws, trust me I made a docking component and almost ditched the manager but I had to use it since I didn't have the time to rewrite it. Think of it as capturing each user gesture individually, you cannot do this with the DragManager. Mike On Wed, Sep 24, 2008 at 11:49 AM, gwangdesign <[EMAIL PROTECTED]> wrote: > Hi Josh, > > I am curious of your experience when you "messed with" drag and drop. > Have you ever thought about the DragManager in Flex? What would be the > reason of not using it in the scenario of something like BumpTop > (physics drag without drop target)? > > Thanks! > > > --- In flexcoders@yahoogroups.com <flexcoders%40yahoogroups.com>, "Josh > McDonald" <[EMAIL PROTECTED]> wrote: > > > > Doug, you're a store (and distribution point) of much useful Flex > kung-fu :) > > > > I didn't think of doing that last time I was messing with > drag-n-drop, but > > it's a great idea. > > > > On Wed, Sep 24, 2008 at 6:02 AM, Doug McCune <[EMAIL PROTECTED]> wrote: > > > > > For basic dragging stuff, here's typically what I do. Have a mouse > > > down listener on whatever component you want to drag. On mouse down > > > you keep track of the coordinates where the user pressed. Then you add > > > a mouse move listener to the system manager. Also add a mouse up > > > listener to system manager. Then when the user moves the mouse (which > > > you catch with the system manager listener), perform the calculation > > > of how far from the original mouse down position the mouse is and move > > > the component to the right place. Then when you catch the mouse up > > > event (again, from system manager), you remove the mouse move listener > > > and you're done. > > > > > > See the code in the Panel class in the Flex framework for an example > > > of this type of dragging. The big thing to know is that you want to > > > use mouse move and mouse up events from the system manager, not from > > > the component itself. If you use the component itself you'll end up > > > losing the mouse movement if the user drags quickly off the component, > > > or you might get stuck in endless dragging if the mouse is released > > > while not over the component. > > > > > > You should also probably have a listener for when the mouse leaves the > > > stage and stop dragging at that point too, since not doing that can > > > make the drag operation continue after the release the mouse (if they > > > move the mouse off your app and the release). > > > > > > Doug > > > > > > On Tue, Sep 23, 2008 at 12:30 PM, gwangdesign <[EMAIL PROTECTED]> > > > wrote: > > > > Sorry if this question should be better showing up at the > > > > flexcomponent group. I didn't have any luck there so far;) > > > > > > > > Suppose I am motivated enough to roll up my sleeves to do something > > > > like what McCune is doing here at tileUI.com: > > > > > > > > http://www.youtube.com/watch?v=T0N7tgF7OOM > > > > > > > > Just for the drag part to get started, am I better off implementing > > > > the darg-drop framework that Flex provide or should I start from the > > > > more basic mouseUp/mouseDown? > > > > > > > > I guess this question is for every Flex guru besides Doug;) I > > > > appreciate it. > > > > > > > > > > > > > > ------------------------------------ > > > > > > -- > > > Flexcoders Mailing List > > > FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt > > > Alternative FAQ location: > > > > > https://share.acrobat.com/adc/document.do?docid=942dbdc8-e469-446f-b4cf-1e62079f6847 > > > Search Archives: > > > http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups > > > Links > > > > > > > > > > > > > > > > > > -- > > "Therefore, send not to know For whom the bell tolls. It tolls for > thee." > > > > http://flex.joshmcdonald.info/ > > > > :: Josh 'G-Funk' McDonald > > :: 0437 221 380 :: [EMAIL PROTECTED] > > > > > -- Teoti Graphix, LLC http://www.teotigraphix.com Teoti Graphix Blog http://www.blog.teotigraphix.com You can find more by solving the problem then by 'asking the question'.
