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, "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] >
