[mapserver-users] Mapplet

Thu May 9 09:31:26 EDT 2002

Hi Jeff,

You have to set parameters which respond to the bounding box drawn, as well
as decipher your mode of functionality (i.e. draw, then click to zoom /
submit, or click to zoom, then draw / submit).  So you must set the
parameters as you would in a non-mapplet application and submit the form
(i.e. document.mapserv.submit() ).

Check out some of the Java mapplet applications in the MapServer gallery as
examples.

Hope this helps.

..Tom

=================================
Tom Kralidis
Systems Scientist
Canada Centre for Remote Sensing
Tel: (613) 947-1828
http://www.ccrs.nrcan.gc.ca/
=================================

> -----Original Message-----
> From: Jeff Berry [mailto:jeffb at erlandsen.com]
> Sent: Wednesday, May 08, 2002 8:05 PM
> To: MapServer
> Subject: [mapserver-users] Mapplet
> 
> 
> I've installed the Mapplet java class. I have managed to get 
> it to the point
> where it will draw a box on the map, but that's about it.  It 
> refreshes the
> area of interest box but does not update or zoom to the new 
> extent on the
> map.  I'm new to java applets and am not sure how to proceed. 
>  Obviously, I
> want to link it to the zoom function, but I've either missed 
> a step or just
> set it up incorrectly.  Below is my template html.  Any help would be
> greatly appreciated.
> 
> -Jeff
> 
> <html>
> <script><!--
> function mapplet_apply(name, minx, miny, maxx, maxy, redraw) {
>   document.mapserv.imgbox.value = minx + " " + miny + " " + 
> maxx + " " +
> maxy;
>   document.mapserv.imgxy.value = minx + " " + miny;
> }
> 
> function mapplet_error(message) {
>   alert(message);
> }
> 
> //--></script>
> <head><title>Chelan County Parcels</title></head>
> <body bgcolor=#ffffff 
> background="../../../images/lightblue_pixel.GIF">
> 
> <center><font size="4" 
> face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular"
> color="white">Chelan County Parcel Viewer</font></c
> enter>
> <hr>
> <form method=GET action="[program]" name="mapserv">
> 
> <center>
> <table border=0 cellspacing=0 cellpadding=4 bgcolor="#000000">
> <tr>
> <td valign="top" align=center>
>   <table cellpadding="0" cellspacing="0" border="0">
>     <tr><td colspan="2"><applet
> codebase="http://www.erlandsengis.com/java/mapplet" 
> code="mapplet.class"
> width="600" height="600" name="mapplet" MAYSCRIPT>
>     <param name="image" value="http://[host][img]">
>     <param name="jitter" value="10">
>     <param name="thickness" value="2">
>     <param name="color" value="yellow">
>     </applet>
>     </td></tr>
>     <tr>
>       <td>&nbsp;<font size=-1 face="arial,helvetica"
> color="#FFFFFF"><b>Erlandsen & Associates Parcel 
> Viewer</b></font></td>
>       <td align="right"><img src="[scalebar]"></td>
>     </tr>
>   </table>
> </td>
> <td valign="top" background="../../../images/lightblue_pixel.GIF">
>   <table cellpadding="5" cellspacing="0" border="0"
> background="../../../images/lightblue_pixel.GIF">
>     <tr><td>
>       <center><input type="submit" value="Refresh/Query"></center>
>       <p>
> 
>       <input type="radio" name="mode" value="browse" checked> 
> <font size="2"
> face="Arial,Helvetica,Geneva,Swiss,SunSans-Regula
> r" color="white"><b>Browse map</b><br>
>       <input type="radio" name="mode" value="query"> <b>Query
> feature</b><br>
>       <input type="radio" name="mode" value="nquery"> 
> <b>Query multiple
> features</b>
> 
>       <hr>
> 
>       <p>
>       <b>Select Layers to Display/Query: </b><br>
>       <br>
>         <b> </b>
>       <input type="checkbox" value="parcels" name="layer" tabindex="2"
> [parcels_check]> Parcels<br>
>         <input type="checkbox" value="plss" name="layer" tabindex="3"
> [plss_check]> PLSS&nbsp;Sections<br>
>         <input type="checkbox" value="quads" name="layer" tabindex="4"
> [quads_check]> Quad Boundaries<br>
>         <input type="checkbox" value="topos" name="layer" tabindex="5"
> [topos_check]> Topos<br>
> 
>       <p>
>       Zoom In <input type=radio name=zoomdir value=1 
> [zoomdir_1_check]>
>       Pan <input type=radio name=zoomdir value=0 [zoomdir_0_check]>
>       Zoom Out <input type=radio name=zoomdir value=-1 
> [zoomdir_-1_check]>
>       <p>
>       Zoom Size <input type=text name=zoomsize size=4 
> value=[zoomsize]>
>       <p>
> 
>       <font size=+1><b>Legend</b></font><br><hr>
>       <img src="[legend]"><hr>
> 
>       <p>
>       <p>
>       <b>Locator Map</b>
>       <center><INPUT NAME="ref" TYPE="image" SRC="[ref]"
> border="0"></center>
>     </td></tr></table>
> 
>   </td></tr>
> </table>
> </center>
> 
> <input type="hidden" name="imgxy" value="299.5 299.5">
> <input type="hidden" name="imgext" value="[mapext]">
> <input type="hidden" name="map" value="[map]">
> <input type="hidden" name="savequery" value="true">
> <input type="hidden" name="program" value="[program]">
> <input type="hidden" name="map_web_imagepath" 
> value="[map_web_imagepath]">
> <input type="hidden" name="map_web_imageurl" 
> value="[map_web_imageurl]">
> <input type="hidden" name="imgbox" value="-1 -1 -1 -1">
> 
> </form>
> </font>
> <p><hr><p>
> 
> </body></html>
> 