# HG changeset patch
# User Ingo Weinzierl <ingo.weinzierl@intevation.de>
# Date 1328824987 0
# Node ID 0cc0e232fa35a5c543b1f9d9d5eac7b749d131cf
# Parent  07c39470e2cb38730c46b287519700802cfea85c
Added standalone demo application that prints all layers of a WMS to file.

flys-artifacts/trunk@4012 c6561f87-3c4e-4783-a992-168aeb5c3f6f

diff -r 07c39470e2cb -r 0cc0e232fa35 flys-artifacts/ChangeLog
--- a/flys-artifacts/ChangeLog	Thu Feb 09 18:38:03 2012 +0000
+++ b/flys-artifacts/ChangeLog	Thu Feb 09 22:03:07 2012 +0000
@@ -1,3 +1,10 @@
+2012-02-09  Ingo Weinzierl <ingo@intevation.de>
+
+	* pom.xml: Added dependency to GeoTools swing module.
+
+	* src/main/java/de/intevation/flys/artifacts/map/PrintMap.java: Standalone
+	  demo application to print WMS layers to file.
+
 2012-02-09  Ingo Weinzierl <ingo@intevation.de>
 
 	* src/main/java/de/intevation/flys/jfree/TimeBounds.java,
diff -r 07c39470e2cb -r 0cc0e232fa35 flys-artifacts/pom.xml
--- a/flys-artifacts/pom.xml	Thu Feb 09 18:38:03 2012 +0000
+++ b/flys-artifacts/pom.xml	Thu Feb 09 22:03:07 2012 +0000
@@ -120,6 +120,11 @@
       <artifactId>gt-geojson</artifactId>
       <version>2.7.2</version>
     </dependency>
+    <dependency>
+      <groupId>org.geotools</groupId>
+      <artifactId>gt-swing</artifactId>
+      <version>2.7.2</version>
+    </dependency>
     <dependency>   
       <groupId>org.json</groupId>   
       <artifactId>json</artifactId>   
diff -r 07c39470e2cb -r 0cc0e232fa35 flys-artifacts/src/main/java/de/intevation/flys/artifacts/map/PrintMap.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/map/PrintMap.java	Thu Feb 09 22:03:07 2012 +0000
@@ -0,0 +1,130 @@
+package de.intevation.flys.artifacts.map;
+
+import java.awt.Color;
+import java.awt.Rectangle;
+
+import java.io.File;
+import java.io.IOException;
+
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+
+import java.util.List;
+
+import java.net.URL;
+import java.net.MalformedURLException;
+
+import javax.imageio.ImageIO;
+
+
+import org.geotools.data.ows.Layer;
+import org.geotools.data.ows.WMSCapabilities;
+import org.geotools.data.wms.WebMapServer;
+import org.geotools.geometry.jts.ReferencedEnvelope;
+import org.geotools.map.MapContext;
+import org.geotools.map.WMSMapLayer;
+import org.geotools.ows.ServiceException;
+import org.geotools.renderer.lite.StreamingRenderer;
+import org.geotools.renderer.GTRenderer;
+
+
+public class PrintMap {
+
+    public static final String DEFAULT_WMS = "http://map1.naturschutz.rlp.de/service_lanis/mod_wms/wms_getmap.php?mapfile=group_gdide&REQUEST=GetCapabilities&SERVICE=WMS";
+    public static final String DEFAULT_OUTFILE = "~/map.jpeg";
+
+    public static final String MAPSERVER = System.getProperty("wms", DEFAULT_WMS);
+    public static final String MAP_IMAGE = System.getProperty("outfile", DEFAULT_OUTFILE);
+
+
+    public static void main(String[] args) {
+        System.out.println("-> start PrintMap");
+        System.out.println("  -> Print layers of WMS: " + MAPSERVER);
+
+        try {
+            WebMapServer    server = getMapserver();
+            WMSMapLayer[] wmsLayer = getWMSLayers(server);
+
+            MapContext mapcontent = new MapContext( wmsLayer );
+            mapcontent.setTitle(" NEW MAP CONTENT TITLE ");
+
+            printMap(mapcontent);
+        }
+        catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        System.out.println("-> finished PrintMap");
+    }
+
+
+    public static void printMap(MapContext map) throws Exception {
+        int imageWidth = 600;
+
+        GTRenderer renderer = new StreamingRenderer();
+        renderer.setContext(map);
+
+        Rectangle imageBounds = null;
+        ReferencedEnvelope mapBounds = null;
+
+        try {
+            mapBounds = map.getLayerBounds();
+            double heightToWidth = mapBounds.getSpan(1) / mapBounds.getSpan(0);
+            imageBounds = new Rectangle(
+                0, 0,
+                imageWidth,
+                (int) Math.round(imageWidth * heightToWidth));
+
+        }
+        catch (Exception e) {
+            // failed to access map layers
+            throw new RuntimeException(e);
+        }
+
+        BufferedImage image = new BufferedImage(imageBounds.width, imageBounds.height, BufferedImage.TYPE_INT_RGB);
+        Graphics2D gr = image.createGraphics();
+        gr.setPaint(Color.WHITE);
+        gr.fill(imageBounds);
+
+        try {
+            renderer.paint(gr, imageBounds, mapBounds);
+            File fileToSave = new File(MAP_IMAGE);
+            ImageIO.write(image, "jpeg", fileToSave);
+        }
+        catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+
+    public static WebMapServer getMapserver() throws MalformedURLException, IOException, ServiceException {
+        return new WebMapServer(getServerUrl());
+    }
+
+
+    public static URL getServerUrl() throws MalformedURLException {
+        return new URL(MAPSERVER);
+    }
+
+
+    public static WMSMapLayer[] getWMSLayers(WebMapServer server) {
+        if (server == null) {
+            System.out.println("WebMapServer == null");
+            throw new RuntimeException("WebMapServer == null");
+        }
+
+        WMSCapabilities capabilities = server.getCapabilities();
+
+        List<Layer> layers = capabilities.getLayerList();
+        WMSMapLayer[] wmslayers = new WMSMapLayer[layers.size()];
+
+        for (int i = 0; i < layers.size(); i++) {
+            Layer l = layers.get(i);
+
+            System.out.println("   -> add layer: " + l);
+            wmslayers[i] = new WMSMapLayer(server, l);
+        }
+
+        return wmslayers;
+    }
+}