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RE: [udig-devel] Drag and drop feature
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Title: Message
Hi!
I
wanted this too, to be able to just click and drag on an icon
(point).
I
basically wanted to simplify what now seems quite complex for the
user:
select the layer
select the point with the selection
tool
move the point with the edit tool
commit - to force the redraw and display the icon
correctly.
In the
end I wrote my own tool to do this using mouse events (could not figure out
how to use the drag and drop events on the map).
Basically:
On
MousePressed I located the correct point by searching the layers for points
within the mouse x, y (+icon size).
(I did
not want users to have to select the layer first).
On
mouse Dragged I changed the mouse pointer to a hand (boolean check so this
is only done once).
On
Mouse Released I set the cursor back to normal and moved the point with the
following code:
(Note: oCurrentFeature, layer and map
variables are set from the mousePressed map search
method)
private void handleMove()
{
try {
EditManager manager = (EditManager)map.getEditManager();
manager.setEditFeature(oCurrentFeature,
layer);
Coordinate
coord = map.getViewportModel().pixelToWorld(x,
y);
GeometryFactory
geomFactory = new
GeometryFactory();
com.vividsolutions.jts.geom.Point
point = geomFactory.createPoint(coord);
oCurrentFeature.setAttribute(0,
point);
manager.commitTransaction();
//forces a repaint
} catch (Exception e)
{
final
Exception fe =
e;
Display.getDefault().syncExec( new
Runnable(){
public void
run(){
MessageDialog.openWarning(shell, "Move Icon Point", "ERROR saving new position
due to:
"+fe.getMessage());
}
});
}
}
Don't know if
that help you.
Michelle
Hi,
I'm currently
using uDig 1.1M7 and have been experimenting with feature styles using SLD.
I have a cities
layer that is being represented by graphic icons and their default geometries
are Point.
The only way I've
found to drag these features is to use the Edit Geometry tool to select the
point of
the feature and
drag it. This initially drags the point by itself without the graphic icon. It
is when I click
the mouse again
that the icon is redrawn at the new location of the point. I'd like to modify
this drag drop
functionality to
just select and drag the feature and have the graphic icon move with the mouse
until
I drop it. Is the
ArrowSelection tool suppose to be able to do this? I looked at the
code but cannot see
how it handles the
drag and drop. Any help would be appreciated.
Regards,
Jonathan
