rrenkert@33: package de.intevation.mxd.reader;
rrenkert@25: 
rrenkert@25: import java.io.IOException;
rrenkert@25: 
rrenkert@25: import org.apache.log4j.Logger;
rrenkert@25: 
rrenkert@25: import com.esri.arcgis.carto.IMap;
rrenkert@39: import com.esri.arcgis.carto.Map;
rrenkert@25: import com.esri.arcgis.geometry.ISpatialReference;
rrenkert@25: import com.esri.arcgis.geometry.ProjectedCoordinateSystem;
rrenkert@25: import com.esri.arcgis.geometry.GeographicCoordinateSystem;
rrenkert@31: import com.esri.arcgis.geometry.UnknownCoordinateSystem;
rrenkert@25: import com.esri.arcgis.geometry.Projection;
rrenkert@39: import com.esri.arcgis.geometry.IEnvelope;
rrenkert@27: 
rrenkert@27: import org.w3c.dom.Element;
rrenkert@27: 
rrenkert@33: import de.intevation.mxd.utils.MapToXMLUtils;
rrenkert@33: 
rrenkert@25: /**
rrenkert@25:  * Reads map information.
rrenkert@25:  *
rrenkert@25:  * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
rrenkert@25:  */
rrenkert@43: public class MapReader {
rrenkert@43:     /**
rrenkert@43:      * The Logger.
rrenkert@43:      */
rrenkert@43:     private static final Logger logger = Logger.getLogger(MapReader.class);
rrenkert@25: 
rrenkert@43:     /**
rrenkert@43:      * Private member.
rrenkert@43:      */
rrenkert@39:     private Map map;
rrenkert@31:     private MapToXMLUtils util;
rrenkert@25: 
rrenkert@25: 
rrenkert@39:     public MapReader(IMap map)
rrenkert@39:     throws Exception {
rrenkert@25:         logger.debug("constructor()");
rrenkert@39:         if(map instanceof Map) {
rrenkert@39:             this.map = (Map)map;
rrenkert@39:         }
rrenkert@39:         else {
rrenkert@39:             throw new Exception("Not an instance of \"Map\"!");
rrenkert@39:         }
rrenkert@25:     }
rrenkert@25: 
rrenkert@25:     /**
rrenkert@25:      * Reads the Map attributes.
rrenkert@25:      */
rrenkert@43:     public void read()
rrenkert@43:     throws IOException {
rrenkert@25:         logger.debug("read()");
rrenkert@43:         if(util == null) {
rrenkert@27:             throw new IOException("Can not write to document.");
rrenkert@43:         }
rrenkert@27: 
rrenkert@39:         //Create XML Element for map.
rrenkert@31:         Element mapElement;
rrenkert@31:         try{
rrenkert@31:             mapElement = util.createMap();
rrenkert@31:         }
rrenkert@31:         catch(Exception e){
rrenkert@31:             e.printStackTrace();
rrenkert@31:             return;
rrenkert@31:         }
rrenkert@39: 
rrenkert@39:         //Read map name.
rrenkert@39:         mapElement.setAttribute("name", map.getName());
rrenkert@39: 
rrenkert@39:         //Read map extent.
rrenkert@39:         IEnvelope ext = map.getExtent();
rrenkert@39:         mapElement.setAttribute(
rrenkert@39:             "extent_max_x",
rrenkert@39:             String.valueOf(ext.getXMax()));
rrenkert@39:         mapElement.setAttribute(
rrenkert@39:             "extent_max_y",
rrenkert@39:             String.valueOf(ext.getYMax()));
rrenkert@39:         mapElement.setAttribute(
rrenkert@39:             "extent_min_x",
rrenkert@39:             String.valueOf(ext.getXMin()));
rrenkert@39:         mapElement.setAttribute(
rrenkert@39:             "extent_min_y",
rrenkert@39:             String.valueOf(ext.getYMin()));
rrenkert@39: 
rrenkert@39:         //Read map units.
rrenkert@39:         int units = map.getMapUnits();
rrenkert@39:         String s_units;
rrenkert@39:         switch(units) {
rrenkert@39:             case   3: s_units = "feet"; break;
rrenkert@39:             case   1: s_units = "inches"; break;
rrenkert@39:             case  10: s_units = "kilometers"; break;
rrenkert@39:             case   9: s_units = "meters"; break;
rrenkert@39:             case   5: s_units = "miles"; break;
rrenkert@39:             case   6: s_units = "nauticalmiles"; break;
rrenkert@39:             case   2: s_units = "points"; break;
rrenkert@39:             default : s_units = "not supported"; break;
rrenkert@39:         }
rrenkert@39:         mapElement.setAttribute("units", s_units);
rrenkert@39: 
rrenkert@39:         //TODO: Find out whats the correct scale value.
rrenkert@39:         mapElement.setAttribute(
rrenkert@39:             "scale",
rrenkert@39:             String.valueOf(map.getMaxScale()));
rrenkert@39: 
rrenkert@39:         //Read the projection.
rrenkert@25:         ISpatialReference sr = map.getSpatialReference();
rrenkert@43:         if(sr instanceof ProjectedCoordinateSystem) {
rrenkert@25:             ProjectedCoordinateSystem pcs = (ProjectedCoordinateSystem)sr;
rrenkert@25:             Projection p = (Projection)pcs.getProjection();
rrenkert@31:             mapElement.setAttribute("projection", p.getName());
rrenkert@25:         }
rrenkert@43:         else if(sr instanceof GeographicCoordinateSystem) {
rrenkert@25:             GeographicCoordinateSystem gcs = (GeographicCoordinateSystem)sr;
rrenkert@31:             mapElement.setAttribute("projection", gcs.getName());
rrenkert@31:         }
rrenkert@31:         else if(sr instanceof UnknownCoordinateSystem) {
rrenkert@31:             UnknownCoordinateSystem ucs = (UnknownCoordinateSystem)sr;
rrenkert@31:             mapElement.setAttribute("projection", sr.getName());
rrenkert@25:         }
rrenkert@27:         else{
rrenkert@27:             throw new IOException("Unknown SpatialReference: " +
rrenkert@27:                                   sr.getClass().toString());
rrenkert@27:         }
rrenkert@27:     }
rrenkert@27: 
rrenkert@43:     /**
rrenkert@43:      * Set the utilities.
rrenkert@43:      */
rrenkert@43:     public void setUtil(MapToXMLUtils util) {
rrenkert@31:         this.util = util;
rrenkert@25:     }
rrenkert@25: }
rrenkert@25: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :