Re: [OpenMap Users] OMGraphic object is not draggable in separately added Demo Layer, etc

Hi Yulei,

On May 10, 2004, at 9:48 PM, zhj45321@mail.sc.cninfo.net wrote:

> Hi Don,
>
> Thanks for your time to answer my questions. Here I describe my
> questions more clearly and hope you can give me some further help:
>
> 1. Why the seperatedly added demo layer does not response to mouse
> double-click on OMGraphic object, and the object is not draggable?
> I've added a LayerHandler and DemoLayer to the MapHandler. And for the
> demo layer to receive mouse events, I've add add OMDrawingTool,
> OMDrawingToolLauncher, and also OMDrawingToolMouseMode specifically to
> the MapHandler, and I've set the mouse mode to OMDrawingToolMouseMode
> .

You also need to add a MouseDelegator and a SelectMouseMode to the
MapHandler to process the initial events of the MapBean. That's what
triggers the layer to call on the drawing tool.

> 2.By setting the layer's DrawingAttributes, we can set the overall
> filling color of ALL regions on a layer. Is it possible to set the
> color for a part of regions of a layer? And how to store the region
> color settings so that I can reload the map with my required region
> color?

You can use the com.bbn.openmap.layer.shape.areas.AreaShapeLayer to
render certain areas differently than the rest. Instructions for this
layer are in the JavaDocs.

- Don

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Don Dietrick, dietrick@bbn.com
BBN Technologies, Cambridge, MA
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

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