add icon loader

git-svn-id: http://trooper/svn/projects/jSite/trunk@609 c3eda9e8-030b-0410-8277-bc7414b0a119

diff --git a/src/net/pterodactylus/util/image/IconLoader.java b/src/net/pterodactylus/util/image/IconLoader.java
new file mode 100644 (file)
index 0000000..9dda78d
--- /dev/null
+++ b/src/net/pterodactylus/util/image/IconLoader.java
@@ -0,0 +1,60 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ * 
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+package net.pterodactylus.util.image;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.swing.Icon;
+import javax.swing.ImageIcon;
+
+/**
+ * Loads an {@link Icon} from the class path.
+ * 
+ * @author <a href="mailto:droden@gmail.com">David Roden</a>
+ * @version $Id$
+ */
+public class IconLoader {
+
+       /**
+        * Loads an icon from the class path.
+        * 
+        * @param resourceName
+        *            The name of the icon
+        * @return The icon, or <code>null</code> if no icon was found
+        */
+       public static Icon loadIcon(String resourceName) {
+               try {
+                       InputStream resourceStream = IconLoader.class.getResourceAsStream(resourceName);
+                       if (resourceStream == null) {
+                               return null;
+                       }
+                       ByteArrayOutputStream imageOutput = new ByteArrayOutputStream();
+                       byte[] buffer = new byte[16384];
+                       int r = 0;
+                       while ((r = resourceStream.read(buffer)) != -1) {
+                               imageOutput.write(buffer, 0, r);
+                       }
+                       imageOutput.flush();
+                       return new ImageIcon(imageOutput.toByteArray());
+               } catch (IOException e) {
+               }
+               return null;
+       }
+
+}