drag

I am trying to write an application that will dynamically load data to map while user pans or zooms it. I need to track when the map is finished to change its view state (stops panning or zooming) and then load a new portion of data for creating markers. But in fact Google Maps API doesn't have any events to handle this. There are some methods like creating an empty overlay to control onTouch events and so on, but map panning could last long after user finished his touch because GMaps use some kind of inertia to make the pan smoother. I tried to subclass MapView but its draw() method is final

Is it possible to implement mouse click and drag selection box in WPF. Should it be done through simply drawing a rectangle, calculating coordinates of its points and evaluating position of other objects inside this box? Or are there some other ways? Could you give a bit of sample code or a link? Here is sample code for a simple technique that I have used in the past to draw a drag selection box. XAML: <Window x:Class="DragSelectionBox.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300"

I am trying to implement drag behavior for group consisting from HTML-text and background-rectangle using the d3 framework. I was able to get it working, although when not setting the drag.origin I can see noticeable jump due to the mouse-position/element-coordinates offset. Exactly how described on the d3 wiki-page Although the page described how to set the Origin for dragging, I do not properly understand how ti implement it in my example. I tried two different approaches : using the element for grouping the elements together and defining new element holding tose. In the first case I have to

I have a UITableView in my iOS app that gets refreshed periodically. The user is also able to move the tableview rows at all times (the tableview is always in editing mode). I want to stop the refresh timer when the user starts dragging a row and start it again when the row is dropped. The last part should be easy with moveRowAtIndexPath , but how to get notified about drag start? Your UITableViewDelegate will receive the following notifications in response to reordering actions: - (void)tableView:(UITableView *)tableView willBeginReorderingRowAtIndexPath:(NSIndexPath *)indexPath; - (void

I searched on the internet for examples how to Drag and Drop JButtons to an Object but I could not make it work. What my program does, is that when I click on a button, the object updated a field (with a selectedobject.setField()). I want to be able to do this not by clicking, but by dragging the JButton. How can I do this ? I found this, and I tried to put in my code: btn.setTransferHandler(new ImageHandler()); btn.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e) { JComponent c = (JComponent)e.getSource(); TransferHandler handler = c.getTransferHandler(); handler