mxd2map: src/java/de/intevation/mxd/writer/SymbolWriter.java comparison

comparison src/java/de/intevation/mxd/writer/SymbolWriter.java @ 251:6b80e46b8f38

Added picture symbol support to the converter.

author	raimund renkert <raimund.renkert@intevation.de>
date	Fri, 12 Aug 2011 16:08:57 +0200
parents	df4e0946ef02
children	8e5d67c45b64

comparison

equal deleted inserted replaced

-:d10fd4de02aa
+:6b80e46b8f38
 import edu.umn.gis.mapscript.fontSetObj;
 import edu.umn.gis.mapscript.hashTableObj;
 import edu.umn.gis.mapscript.MS_SYMBOL_TYPE;
 import java.io.File;
+import java.awt.Image;
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBufferByte;
+import java.awt.image.FilteredImageSource;
+import java.awt.image.ImageFilter;
+import java.awt.image.ImageProducer;
+import java.awt.image.RGBImageFilter;
+import java.awt.Toolkit;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import javax.imageio.ImageIO;
+import java.io.ByteArrayInputStream;
+import org.apache.commons.codec.binary.Base64;
 /**
 * The interface to the mapfile writer.
 *
 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
 */
 public boolean write(Element symbolElement) {
 logger.debug("write(Element)");
 symbolSetObj symbolSet = map.getSymbolset();
-String name = symbolElement.getAttribute("name");
-symbolObj sym = symbolSet.getSymbolByName(name);
 String symType = symbolElement.getAttribute("style");
 String type = symbolElement.getAttribute("type");
 if(symType.equals("point")) {
+String name = symbolElement.getAttribute("name");
+symbolObj sym = symbolSet.getSymbolByName(name);
 writeSimple(sym);
 }
 else if (symType.equals("arrow")) {
+String name = symbolElement.getAttribute("name");
+symbolObj sym = symbolSet.getSymbolByName(name);
 writeArrow(sym, symbolElement);
 }
 else if (symType.equals("char")) {
+String name = symbolElement.getAttribute("name");
+symbolObj sym = symbolSet.getSymbolByName(name);
 int exists = symbolExists(symbolElement);
 if(exists == -1) {
 String old = symbolElement.getAttribute("name");
 symbolElement.setAttribute(
 "name",
 symbolElement.setAttribute(
 "name",
 symbolSet.getSymbol(exists).getName());
 }
 }
-else if (type.equals("line")) {
+else if (type.equals("line") && !symType.equals("picture")) {
+String name = symbolElement.getAttribute("name");
+symbolObj sym = symbolSet.getSymbolByName(name);
 writeHatch(sym);
+}
+else if(symType.equals("picture")) {
+// Create the path to the picture.
+int exists = symbolExists(symbolElement);
+String n = symbolElement.getAttribute("name");
+symbolElement.setAttribute(
+"name",
+n + symbolSet.getNumsymbols() + 1);
+String path = this.map.getMappath();
+if (path.endsWith(".map")) {
+path = path.substring(0, path.lastIndexOf(File.separator) + 1);
+path += symbolElement.getAttribute("name") + ".png";
+}
+else {
+path += symbolElement.getAttribute("name") + ".png";
+}
+// Create a new symbol using the path as symbol name.
+// This is a workarround to set the IMAGE attribute to the path
+// since this attribute is immutable via mapscript.
+symbolObj sym = symbolSet.getSymbolByName(path);
+writePicture(sym, symbolElement, path);
 }
 else {
 return false;
 }
 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_TRUETYPE.swigValue());
 symbol.setAntialias(1);
 symbol.setCharacter("&#" + symbolElement.getAttribute("char") + ";");
 }
-/**
+/**
+* Create the image and a pixmap symbol.
+*
+* @param sym The symbol object.
+* @param symElem The DOM element containing symbol informations.
+*/
+private void writePicture(symbolObj sym, Element symElem, String path) {
+logger.info("writePicture(symbolObj, Element)");
+try {
+// Create the image as png.
+if(symElem.hasAttribute("picture")) {
+Base64 decoder = new Base64();
+// Decode the base64 string.
+byte[] ba = decoder.decode(symElem.getAttribute("picture"));
+ByteArrayInputStream ins = new ByteArrayInputStream(ba);
+// Create temporary image from byte array.
+BufferedImage bi = ImageIO.read(ins);
+Color c = Color.decode(
+symElem.getAttribute("transparent_color"));
+// Make a color transparent.
+Image im = colorToTransparent(bi, c);
+// Save image as png.
+BufferedImage dest = new BufferedImage(
+bi.getWidth(),
+bi.getHeight(),
+BufferedImage.TYPE_INT_ARGB);
+Graphics2D g2 = dest.createGraphics();
+g2.drawImage(im, 0, 0, null);
+g2.dispose();
+File f = new File(path);
+ImageIO.write(dest, "PNG", f);
+}
+// Set symbol attributes.
+// Overwrite the symbol name conating the path to the image
+// with the real name. This is part of the workarround(line 137).
+sym.setName(symElem.getAttribute("name"));
+sym.setType(MS_SYMBOL_TYPE.MS_SYMBOL_PIXMAP.swigValue());
+}
+catch(Exception e) {
+logger.warn("Could not save image for pixmap symbol.");
+}
+}
+/**
 * Create a hatch symbol for polygon fill.
 *
 * @param symbol The symbol object.
 */
 private void writeHatch(symbolObj symbol) {
 */
 public boolean canWrite(String type) {
 if (type.equals("point") ||
 type.equals("arrow") ||
 type.equals("char") ||
-type.equals("line")) {
+type.equals("line") ||
+type.equals("picture")) {
 return true;
 }
 else {
 return false;
 }
 }
 else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_HATCH.swigValue () &&
 etype.equals("hatch")) {
 return i;
 }
+else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_PIXMAP.swigValue() &&
+etype.equals("picture")) {
+return i;
+}
 }
 return -1;
 }
+/**
+* Transform a color to transparency.
+*
+* @param bi The image.
+* @param col the color.
+*
+* @return The image with transparent color.
+*/
+private Image colorToTransparent(BufferedImage bi, Color col) {
+final int markerRGB = col.getRGB() | 0xFF000000;
+ImageFilter filter = new RGBImageFilter() {
+public final int filterRGB(int x, int y, int rgb) {
+if ((rgb | 0xFF000000) == markerRGB) {
+// Mark the alpha bits as zero - transparent
+return 0x00FFFFFF & rgb;
+}
+else {
+// nothing to do
+return rgb;
+}
+}
+};
+ImageProducer ip = new FilteredImageSource(bi.getSource(), filter);
+return Toolkit.getDefaultToolkit().createImage(ip);
+}
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

Mercurial > mxd2map

comparison src/java/de/intevation/mxd/writer/SymbolWriter.java @ 251:6b80e46b8f38