# HG changeset patch
# User Felix Wolfsteller <felix.wolfsteller@intevation.de>
# Date 1314362411 0
# Node ID 9324839684a433f2514999aeed62e52aba3005c9
# Parent  e298c4d289277a169daa3cdda95157d54fa71595
New theme-related utilities.


flys-artifacts/trunk@2593 c6561f87-3c4e-4783-a992-168aeb5c3f6f

diff -r e298c4d28927 -r 9324839684a4 flys-artifacts/ChangeLog
--- a/flys-artifacts/ChangeLog	Fri Aug 26 11:15:24 2011 +0000
+++ b/flys-artifacts/ChangeLog	Fri Aug 26 12:40:11 2011 +0000
@@ -1,3 +1,8 @@
+2011-08-26  Felix Wolfsteller <felix.wolfsteller@intevation.de>
+
+	* src/main/java/de/intevation/flys/utils/ThemeUtil.java:
+	  New Util to work with theme-related stuff.
+
 2011-08-26  Felix Wolfsteller <felix.wolfsteller@intevation.de>
 
 	* src/main/java/de/intevation/flys/artifacts/MainValuesArtifact.java:
diff -r e298c4d28927 -r 9324839684a4 flys-artifacts/src/main/java/de/intevation/flys/utils/ThemeUtil.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/utils/ThemeUtil.java	Fri Aug 26 12:40:11 2011 +0000
@@ -0,0 +1,48 @@
+package de.intevation.flys.utils;
+
+import java.awt.Color;
+
+import org.w3c.dom.Document;
+
+import de.intevation.artifacts.common.utils.XMLUtils;
+
+
+/**
+ * Utility to deal with themes and their representations.
+ */
+public class ThemeUtil {
+    public final static String XPATH_LINE_COLOR = "/theme/field[@name='linecolor']/@default";
+
+    /**
+     * Parse a string like "103, 100, 0" and return a corresping color.
+     * @param rgbtext Color as string representation, e.g. "255,0,20".
+     * @return Color, null in case of issues.
+     */
+    public static Color parseRGB(String rgbtext) {
+        if (rgbtext == null) {
+            return null;
+        }
+        String rgb[] = rgbtext.split(",");
+        Color c = null;
+        try {
+            c = new Color(
+                    Integer.valueOf(rgb[0].trim()),
+                    Integer.valueOf(rgb[1].trim()),
+                    Integer.valueOf(rgb[2].trim()));
+        }
+        catch (NumberFormatException nfe) {
+            c = null;
+        }
+        return c;
+    }
+
+    /**
+     * Gets color from color field.
+     * @param theme    the theme document.
+     * @return color.
+     */
+    public static Color parseLineColorField(Document theme) {
+        String color = XMLUtils.xpathString(theme, XPATH_LINE_COLOR, null);
+        return parseRGB(color);
+    }
+}