rrenkert@41: package de.intevation.mxd.writer;
rrenkert@41: 
rrenkert@41: import org.apache.log4j.Logger;
rrenkert@41: 
rrenkert@41: import org.w3c.dom.Document;
rrenkert@41: import org.w3c.dom.Element;
rrenkert@41: import org.w3c.dom.NodeList;
rrenkert@42: 
rrenkert@41: import javax.xml.xpath.XPathConstants;
rrenkert@42: import java.awt.Color;
rrenkert@41: 
rrenkert@41: import edu.umn.gis.mapscript.mapObj;
rrenkert@41: import edu.umn.gis.mapscript.layerObj;
rrenkert@42: import edu.umn.gis.mapscript.classObj;
rrenkert@42: import edu.umn.gis.mapscript.styleObj;
rrenkert@42: import edu.umn.gis.mapscript.colorObj;
rrenkert@42: import edu.umn.gis.mapscript.symbolObj;
rrenkert@42: import edu.umn.gis.mapscript.symbolSetObj;
rrenkert@42: import edu.umn.gis.mapscript.lineObj;
rrenkert@42: import edu.umn.gis.mapscript.pointObj;
rrenkert@42: 
rrenkert@41: import edu.umn.gis.mapscript.MS_UNITS;
rrenkert@42: import edu.umn.gis.mapscript.MS_LAYER_TYPE;
rrenkert@42: import edu.umn.gis.mapscript.MS_SYMBOL_TYPE;
rrenkert@41: 
rrenkert@41: import de.intevation.mxd.utils.XMLUtils;
rrenkert@41: 
rrenkert@41: /**
rrenkert@43:  * The Mapfile Writer.
rrenkert@43:  * This Writer uses the MapScript Java API to create Mapfiles from a DOM.
rrenkert@41:  *
rrenkert@41:  * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
rrenkert@41:  */
rrenkert@41: public class MapScriptWriter
rrenkert@41: implements IWriter
rrenkert@41: {
rrenkert@43:     /**
rrenkert@43:      * The Logger.
rrenkert@43:      */
rrenkert@43:     private static final Logger logger = Logger.getLogger(MapScriptWriter.class);
rrenkert@43: 
rrenkert@43:     /**
rrenkert@43:      * Private member.
rrenkert@43:      */
rrenkert@41:     private Document root;
rrenkert@41:     private mapObj map;
rrenkert@55:     private String mapFilename;
rrenkert@41: 
rrenkert@41:     public MapScriptWriter() {
rrenkert@55:         map = new mapObj("");
rrenkert@55:         mapFilename = "";
rrenkert@41:     }
rrenkert@41: 
rrenkert@55:     public MapScriptWriter(String templ, String filename) {
rrenkert@55:         map = new mapObj(templ);
rrenkert@55:         mapFilename = filename;
rrenkert@41:     }
rrenkert@41: 
rrenkert@43:     /**
rrenkert@43:      * Write the mapfile.
rrenkert@43:      * @param doc The root document containin the map attributes.
rrenkert@43:      *
rrenkert@43:      * @return Currently always true.
rrenkert@43:      */
rrenkert@41:     public boolean write(Document doc) {
rrenkert@41:         logger.debug("write()");
rrenkert@41:         this.root = doc;
rrenkert@41: 
rrenkert@41:         //Get the filename.
rrenkert@41:         Element fileNode = (Element)XMLUtils.xpath(
rrenkert@41:             root,
rrenkert@41:             "/mxd/file",
rrenkert@41:             XPathConstants.NODE);
rrenkert@41:         //Write the map attributes.
rrenkert@41:         writeMap();
rrenkert@42:         //Write the layers.
rrenkert@42:         writeLayer();
rrenkert@41:         //Save the map.
rrenkert@42:         mapObj cloneMap = map.cloneMap();
rrenkert@55:         cloneMap.save(mapFilename);
rrenkert@41:         return true;
rrenkert@41:     }
rrenkert@41: 
rrenkert@43:     /**
rrenkert@43:      * Create the map object and set the attributes.
rrenkert@43:      */
rrenkert@41:     private void writeMap() {
rrenkert@41:         logger.debug("writeMap()");
rrenkert@41:         //Get the map.
rrenkert@41:         Element mapNode = (Element)XMLUtils.xpath(
rrenkert@41:             root,
rrenkert@41:             "/mxd/map",
rrenkert@41:             XPathConstants.NODE);
rrenkert@41: 
rrenkert@41:         //Set the name.
rrenkert@41:         map.setName(mapNode.getAttribute("name"));
rrenkert@42:         map.setMetaData("wms_title", mapNode.getAttribute("name"));
rrenkert@41:         //Set the extent.
rrenkert@41:         map.setExtent(
rrenkert@41:             Double.parseDouble(mapNode.getAttribute("extent_min_x")),
rrenkert@41:             Double.parseDouble(mapNode.getAttribute("extent_min_y")),
rrenkert@41:             Double.parseDouble(mapNode.getAttribute("extent_max_x")),
rrenkert@41:             Double.parseDouble(mapNode.getAttribute("extent_max_y")));
rrenkert@41: 
rrenkert@41:         //Set the units.
rrenkert@41:         String units = mapNode.getAttribute("units");
rrenkert@41:         MS_UNITS msu;
rrenkert@41:         if(units.equals("feet")) {
rrenkert@41:             msu = MS_UNITS.MS_FEET;
rrenkert@41:         }
rrenkert@41:         else if(units.equals("inches")) {
rrenkert@41:             msu = MS_UNITS.MS_INCHES;
rrenkert@41:         }
rrenkert@41:         else if(units.equals("kilometers")) {
rrenkert@41:             msu = MS_UNITS.MS_KILOMETERS;
rrenkert@41:         }
rrenkert@41:         else if(units.equals("meters")) {
rrenkert@41:             msu = MS_UNITS.MS_METERS;
rrenkert@41:         }
rrenkert@41:         else if(units.equals("miles")) {
rrenkert@41:             msu = MS_UNITS.MS_MILES;
rrenkert@41:         }
rrenkert@41:         else if(units.equals("nauticalmiles")) {
rrenkert@41:             msu = MS_UNITS.MS_NAUTICALMILES;
rrenkert@41:         }
rrenkert@41:         else if(units.equals("points")) {
rrenkert@41:             msu = MS_UNITS.MS_PIXELS;
rrenkert@41:         }
rrenkert@41:         else {
rrenkert@41:             msu = MS_UNITS.MS_DD;
rrenkert@41:         }
rrenkert@41:         map.setUnits(msu);
rrenkert@41: 
rrenkert@41:         //TODO: Find out whats the correct scale value.
rrenkert@41:         //map.setScaledenom(Double.parseDouble(mapNode.getAttribute("scale")));
rrenkert@41:     }
rrenkert@41: 
rrenkert@43:     /**
rrenkert@43:      * Create layer objects and set the attributes.
rrenkert@43:      */
rrenkert@41:     private void writeLayer() {
rrenkert@42:         logger.debug("writeLayer()");
rrenkert@42:         Element mapNode = (Element)XMLUtils.xpath(
rrenkert@42:             root,
rrenkert@42:             "/mxd/map",
rrenkert@42:             XPathConstants.NODE);
rrenkert@42:         NodeList list = mapNode.getElementsByTagName("layer");
rrenkert@42:         for(int i = 0; i < list.getLength(); i++) {
rrenkert@42:             Element layerElement = (Element)list.item(i);
rrenkert@42:             layerObj layer = new layerObj(map);
rrenkert@42: 
rrenkert@42:             //The layer name.
rrenkert@42:             layer.setName(layerElement.getAttribute("name"));
rrenkert@42: 
rrenkert@42:             //The layer status.
rrenkert@42:             String stat = layerElement.getAttribute("status");
rrenkert@42:             if (stat.equals("on")) {
rrenkert@42:                 layer.setStatus(1);
rrenkert@42:             }
rrenkert@42:             else {
rrenkert@42:                 layer.setStatus(0);
rrenkert@42:             }
rrenkert@42: 
rrenkert@42:             //The scale.
rrenkert@42:             double maxScale =
rrenkert@42:                 Double.parseDouble(layerElement.getAttribute("max_scale"));
rrenkert@42:             double minScale =
rrenkert@42:                 Double.parseDouble(layerElement.getAttribute("min_scale"));
rrenkert@42:             layer.setMaxscaledenom(maxScale);
rrenkert@42:             layer.setMinscaledenom(minScale);
rrenkert@42: 
rrenkert@42:             //The layer type.
rrenkert@42:             String type = layerElement.getAttribute("type");
rrenkert@42:             if(type.equals("point")) {
rrenkert@42:                 layer.setType(MS_LAYER_TYPE.MS_LAYER_POINT);
rrenkert@42:             }
rrenkert@42: 
rrenkert@42:             //The layer datasource.
rrenkert@42:             layer.setData(layerElement.getAttribute("data_source"));
rrenkert@42: 
rrenkert@42:             //Write classes.
rrenkert@42:             writeClass(layer, layerElement);
rrenkert@42:         }
rrenkert@41: 
rrenkert@41:     }
rrenkert@41: 
rrenkert@42:     /**
rrenkert@42:      * Adds the classes to the layer.
rrenkert@42:      * @param layer        Mapscript layer object.
rrenkert@42:      * @param layerElement Dom element containing the class attributes.
rrenkert@42:      */
rrenkert@42:     private void writeClass(layerObj layer, Element layerElement) {
rrenkert@42:         //Get all renderer elements (renderer in arcgis equals class in the
rrenkert@42:         //mapfile.)
rrenkert@42:         NodeList list = layerElement.getElementsByTagName("renderer");
rrenkert@41: 
rrenkert@42:         //Create all found class objects and write the symbols and styles for
rrenkert@42:         //each class.
rrenkert@42:         for(int i = 0; i < list.getLength(); i++) {
rrenkert@42:             Element classElement = (Element)list.item(i);
rrenkert@42:             classObj co = new classObj(layer);
rrenkert@42:             co.setName(classElement.getAttribute("name"));
rrenkert@44:             if(classElement.hasAttribute("field_count")) {
rrenkert@44:                 int count =
rrenkert@44:                     Integer.parseInt(classElement.getAttribute("field_count"));
rrenkert@44:                 String exp = "";
rrenkert@44:                 for(int j = 0; j < count; j++) {
rrenkert@44:                     //TODO Find a way to create Expressions.
rrenkert@44:                     exp = "([" + classElement.getAttribute("expression_field_" + j);
rrenkert@46:                     exp += "] " + classElement.getAttribute("expression_operator");
rrenkert@46:                     exp += " " + classElement.getAttribute("value") + ")";
rrenkert@44:                 }
rrenkert@44:                 co.setExpression(exp);
rrenkert@44:             }
rrenkert@42:             //Write symbols and styles.
rrenkert@42:             writeSymbol(co, classElement);
rrenkert@42:         }
rrenkert@41:     }
rrenkert@41: 
rrenkert@42:     /**
rrenkert@43:      * Adds the symbols and styles to the mapfile.
rrenkert@42:      * @param co           Mapscript class object.
rrenkert@42:      * @param classElement Dom element containing the style and symbol
rrenkert@42:      *                     attributes.
rrenkert@42:      */
rrenkert@42:     private void writeSymbol(classObj co, Element classElement) {
rrenkert@42:         //Get all symbol elements from dom.
rrenkert@42:         NodeList list = classElement.getElementsByTagName("symbol");
rrenkert@41: 
rrenkert@42:         //Get the symbol set from the map object.
rrenkert@42:         symbolSetObj symbolSet = map.getSymbolset();
rrenkert@42: 
rrenkert@42:         //
rrenkert@42:         for(int i = 0; i < list.getLength(); i++){
rrenkert@42:             Element symbolElement = (Element) list.item(i);
rrenkert@42:             styleObj style = new styleObj(co);
rrenkert@42:             style.setAngle(
rrenkert@42:                 Double.parseDouble(symbolElement.getAttribute("angle")));
rrenkert@55:             if(symbolElement.hasAttribute("color")) {
rrenkert@55:                 String c = symbolElement.getAttribute("color");
rrenkert@55:                 Color col = Color.decode(c);
rrenkert@55:                 colorObj color = new colorObj(
rrenkert@55:                     col.getRed(),
rrenkert@55:                     col.getGreen(),
rrenkert@55:                     col.getBlue(),
rrenkert@55:                     -4);
rrenkert@55:                 style.setColor(color);
rrenkert@55:             }
rrenkert@43:             style.setSize(Double.parseDouble(
rrenkert@43:                 symbolElement.getAttribute("size")));
rrenkert@46:             if(symbolElement.hasAttribute("outline_color")) {
rrenkert@46:                 Color oCol = Color.decode(
rrenkert@46:                     symbolElement.getAttribute("outline_color"));
rrenkert@46:                 colorObj outlineColor = new colorObj(
rrenkert@46:                     oCol.getRed(),
rrenkert@46:                     oCol.getGreen(),
rrenkert@46:                     oCol.getBlue(),
rrenkert@46:                     -4);
rrenkert@46:                 style.setOutlinecolor(outlineColor);
rrenkert@46:                 style.setOutlinewidth(Double.parseDouble(
rrenkert@46:                     symbolElement.getAttribute("outline_size")));
rrenkert@46:             }
rrenkert@43:             String name = symbolElement.getAttribute("name");
rrenkert@43:             style.setSymbolByName(map, name);
rrenkert@43:             symbolObj sym = symbolSet.getSymbolByName(name);
rrenkert@43: 
rrenkert@42:             String symType = symbolElement.getAttribute("style");
rrenkert@42:             if(symType.equals("point")) {
rrenkert@49:                 writePointSymbol(sym, symbolElement);
rrenkert@42:             }
rrenkert@46:             else if (symType.equals("arrow")) {
rrenkert@49:                 writeArrowSymbol(sym, symbolElement);
rrenkert@49:             }
rrenkert@49:             else if (symType.equals("char")) {
rrenkert@49:                 writeCharSymbol(sym, symbolElement);
rrenkert@46:             }
rrenkert@42:         }
rrenkert@42:         saveSymbolSet(symbolSet);
rrenkert@41:     }
rrenkert@41: 
rrenkert@49: 
rrenkert@49:     /**
rrenkert@49:      * Write point symbols to the map.
rrenkert@49:      * @param symbol The symbol object.
rrenkert@49:      * @param symbolElement The DOM object containing the attributes.
rrenkert@49:      */
rrenkert@49:     private void writePointSymbol(symbolObj symbol, Element symbolElement) {
rrenkert@49:         lineObj points = new lineObj();
rrenkert@49:         points.add(new pointObj(1,1,0));
rrenkert@49:         symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_ELLIPSE.swigValue());
rrenkert@49:         symbol.setPoints(points);
rrenkert@49:         symbol.setFilled(1);
rrenkert@49:     }
rrenkert@49: 
rrenkert@49: 
rrenkert@49:     /**
rrenkert@49:      * Write arrow symbol to the map.
rrenkert@49:      * @param symbol The symbol object.
rrenkert@49:      * @param symbolElement The DOM object containig the attributes.
rrenkert@49:      */
rrenkert@49:     private void writeArrowSymbol(symbolObj symbol, Element symbolElement) {
rrenkert@49:         double len = Double.parseDouble(symbolElement.getAttribute("length"));
rrenkert@49:         double width = Double.parseDouble(symbolElement.getAttribute("width"));
rrenkert@49:         double ratio = len/width;
rrenkert@49:         lineObj points = new lineObj();
rrenkert@49: 
rrenkert@49:         points.add(new pointObj(0, 0, 0));
rrenkert@49:         points.add(new pointObj((1*ratio), 0.5, 0));
rrenkert@49:         points.add(new pointObj(0, 1, 0));
rrenkert@49:         points.add(new pointObj(0, 0, 0));
rrenkert@49:         symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR.swigValue());
rrenkert@49:         symbol.setPoints(points);
rrenkert@49:         symbol.setFilled(1);
rrenkert@49:     }
rrenkert@49: 
rrenkert@49: 
rrenkert@49:     /**
rrenkert@49:      * Write font symbols to the map.
rrenkert@49:      * @param symbol The symbol object.
rrenkert@49:      * @param symbolElement The DOM object containing the attributes.
rrenkert@49:      */
rrenkert@49:     private void writeCharSymbol(symbolObj symbol, Element symbolElement) {
rrenkert@49:         symbol.setFont(symbolElement.getAttribute("font"));
rrenkert@49:         symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_TRUETYPE.swigValue());
rrenkert@49:         symbol.setAntialias(1);
rrenkert@49:         symbol.setCharacter("#&" + symbolElement.getAttribute("char") + ";");
rrenkert@49:     }
rrenkert@49: 
rrenkert@49: 
rrenkert@42:     /**
rrenkert@42:      * Save the symbol set.
rrenkert@43:      * @param symbols The symbol set.
rrenkert@42:      */
rrenkert@42:     private void saveSymbolSet(symbolSetObj symbols) {
rrenkert@42:         Element fileNode = (Element)XMLUtils.xpath(
rrenkert@42:             root,
rrenkert@42:             "/mxd/file",
rrenkert@42:             XPathConstants.NODE);
rrenkert@42:         String filename = fileNode.getAttribute("name");
rrenkert@42:         String path = "";
rrenkert@42:         if(filename.contains("/")) {
rrenkert@42:             path = filename.substring(0, filename.lastIndexOf("/"));
rrenkert@42:         }
rrenkert@42:         else if(filename.contains("\\")) {
rrenkert@42:             path = filename.substring(0, filename.lastIndexOf("\\"));
rrenkert@42:         }
rrenkert@42:         symbols.save(path + "/symbols.sym");
rrenkert@42:     }
rrenkert@41: }
rrenkert@41: