diff src/java/de/intevation/mxd/writer/FillStyleWriter.java @ 97:18e4f143896b

Added polygon writer.
author Raimund Renkert <rrenkert@intevation.de>
date Mon, 06 Jun 2011 17:24:43 +0200
parents
children 461ee9193097
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java/de/intevation/mxd/writer/FillStyleWriter.java	Mon Jun 06 17:24:43 2011 +0200
@@ -0,0 +1,225 @@
+package de.intevation.mxd.writer;
+
+import java.io.IOException;
+import java.awt.Color;
+import org.apache.log4j.Logger;
+
+import org.w3c.dom.Element;
+import org.w3c.dom.NodeList;
+
+import edu.umn.gis.mapscript.mapObj;
+import edu.umn.gis.mapscript.layerObj;
+import edu.umn.gis.mapscript.classObj;
+import edu.umn.gis.mapscript.styleObj;
+import edu.umn.gis.mapscript.colorObj;
+import edu.umn.gis.mapscript.symbolObj;
+import edu.umn.gis.mapscript.symbolSetObj;
+import edu.umn.gis.mapscript.lineObj;
+import edu.umn.gis.mapscript.pointObj;
+
+
+/**
+ * The interface to the mapfile writer.
+ *
+ * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
+ */
+public class FillStyleWriter {
+
+    /**
+     * The Logger.
+     */
+    private static final Logger logger =
+        Logger.getLogger(FillStyleWriter.class);
+
+    private mapObj map;
+    private classObj cl;
+    private styleObj style;
+
+    public FillStyleWriter (mapObj map, classObj cl) {
+        logger.debug("contructor(mapObj, classObj)");
+        this.map = map;
+        this.cl = cl;
+        this.style = new styleObj(cl);
+    }
+
+    /**
+     * Write the content.
+     */
+    public boolean write(Element symbolElement)
+    throws Exception {
+        symbolSetObj symbolSet = map.getSymbolset();
+
+        if(symbolElement.hasChildNodes()) {
+            NodeList symbols = symbolElement.getChildNodes();
+            for (int i = 0; i < symbols.getLength(); i++) {
+                Element nextSym = (Element)symbols.item(i);
+                String type = nextSym.getAttribute("type");
+
+                if(((symbols.getLength() > 1 && i == 0) ||
+                    (symbols.getLength() == 1 &&
+                     !symbolElement.hasAttribute("hatch"))) &&
+                   type.equals("line")) {
+                    writeOutline(nextSym);
+                    if (symbols.getLength() == 1) {
+                        writeSimple(symbolElement);
+                    }
+                }
+                else if(nextSym.getTagName().equals("symbol") &&
+                   !symbolElement.hasAttribute("hatch") ||
+                   (i == 1 && type.equals("marker"))) {
+                    double gap = 0;
+                    if(symbolElement.hasAttribute("xseparation")) {
+                        gap = Double.parseDouble(
+                            symbolElement.getAttribute("xseparation"));
+                    }
+                    writeMarker(nextSym, gap);
+                }
+                else if (nextSym.getTagName().equals("symbol") &&
+                         symbolElement.hasAttribute("hatch")) {
+                    if(symbolElement.hasAttribute("angle")) {
+                        nextSym.setAttribute(
+                            "angle",
+                            symbolElement.getAttribute("angle"));
+                    }
+                    if(symbolElement.hasAttribute("separation")) {
+                        nextSym.setAttribute(
+                            "size",
+                            symbolElement.getAttribute("separation"));
+                    }
+                    writeMarker(nextSym, -1);
+                }
+                else {
+                    writeSimple(symbolElement);
+                }
+            }
+        }
+        else {
+            writeSimple(symbolElement);
+            if(symbolElement.hasAttribute("outline_color")) {
+                Color oCol = Color.decode(
+                    symbolElement.getAttribute("outline_color"));
+                colorObj outlineColor = new colorObj(
+                    oCol.getRed(),
+                    oCol.getGreen(),
+                    oCol.getBlue(),
+                    -4);
+                style.setOutlinecolor(outlineColor);
+                style.setOutlinewidth(Double.parseDouble(
+                    symbolElement.getAttribute("outline_size")));
+            }
+
+        }
+
+        return true;
+    }
+
+    /**
+     * Write the outline for a polygon.
+     */
+    private void writeOutline(Element symbolElement)
+    throws Exception {
+        logger.debug("writeOutline()");
+        //write transparent outline
+        colorObj color = new colorObj(-1, -1, -1, -4);
+
+        //write new style for the outline
+        //TODO write further attribute like pattern etc.
+        Color oCol = Color.decode(
+            symbolElement.getAttribute("color"));
+
+        styleObj outline = new styleObj (cl);
+
+        colorObj outlinecolor = new colorObj(
+            oCol.getRed(),
+            oCol.getGreen(),
+            oCol.getBlue(),
+            -4);
+        outline.setOutlinecolor(outlinecolor);
+        outline.setOutlinewidth(Double.parseDouble(
+            symbolElement.getAttribute("width")));
+    }
+
+    /**
+     * Write marker attributes and a symbol for the polygon fill.
+     */
+    private void writeMarker(Element symbolElement, double gap)
+    throws Exception {
+        logger.debug("writeMarker()");
+        String name = symbolElement.getAttribute("name");
+        String type = symbolElement.getAttribute("type");
+        if (symbolElement.hasAttribute("angle")) {
+            style.setAngle(
+                Double.parseDouble(symbolElement.getAttribute("angle")));
+        }
+        if(symbolElement.hasAttribute("color")) {
+            String c = symbolElement.getAttribute("color");
+            Color col = Color.decode(c);
+            colorObj color = new colorObj(
+                col.getRed(),
+                col.getGreen(),
+                col.getBlue(),
+                -4);
+            style.setColor(color);
+        }
+        if (symbolElement.hasAttribute ("size")) {
+            double size = Double.parseDouble(
+                symbolElement.getAttribute("size"));
+            style.setSize(size);
+            //In arcgis the separation goes from center to center, so the gap is
+            //the separation - size
+            if (gap > 0) {
+                style.setGap(gap - size);
+            }
+        }
+        if(symbolElement.hasAttribute("outline_color")) {
+            Color oCol = Color.decode(
+                symbolElement.getAttribute("outline_color"));
+            colorObj outlineColor = new colorObj(
+                oCol.getRed(),
+                oCol.getGreen(),
+                oCol.getBlue(),
+                -4);
+            style.setOutlinecolor(outlineColor);
+            style.setOutlinewidth(Double.parseDouble(
+                symbolElement.getAttribute("outline_size")));
+        }
+
+        if(type.equals("marker")) {
+            style.setSymbolByName(map, name);
+            SymbolWriter sw = new SymbolWriter(this.map, this.cl);
+            sw.write(symbolElement);
+        }
+        else if(type.equals("line")) {
+            style.setSymbolByName(map, "hatch");
+            SymbolWriter sw = new SymbolWriter(this.map, this.cl);
+            symbolElement.setAttribute("name", "hatch");
+            sw.write(symbolElement);
+        }
+    }
+
+    /**
+     * Write simple fill attributes.
+     */
+    private void writeSimple(Element symbolElement) {
+        logger.debug("writeSimple(Element)");
+        if(symbolElement.hasAttribute("transparency")) {
+            double value = Double.parseDouble(
+                symbolElement.getAttribute("transparency"));
+            int opacity = (int)(value/255) * 100;
+            if(value >= 0) {
+                style.setOpacity(opacity);
+            }
+        }
+        if(symbolElement.hasAttribute("color")) {
+            String c = symbolElement.getAttribute("color");
+            Color col = Color.decode(c);
+            colorObj color = new colorObj(
+                col.getRed(),
+                col.getGreen(),
+                col.getBlue(),
+                -4);
+            style.setColor(color);
+        }
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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