1 files changed, 82 insertions, 0 deletions
diff --git a/BKUApplet/src/main/java/at/gv/egiz/bku/online/applet/viewer/URLFontLoader.java b/BKUApplet/src/main/java/at/gv/egiz/bku/online/applet/viewer/URLFontLoader.java
new file mode 100644
index 00000000..f914aed7
--- /dev/null
+++ b/BKUApplet/src/main/java/at/gv/egiz/bku/online/applet/viewer/URLFontLoader.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2008 Federal Chancellery Austria and
+ * Graz University of Technology
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package at.gv.egiz.bku.online.applet.viewer;
+
+import at.gv.egiz.bku.gui.viewer.FontProviderException;
+import at.gv.egiz.bku.gui.viewer.FontProvider;
+import java.awt.Font;
+import java.awt.FontFormatException;
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.util.concurrent.ExecutionException;
+import javax.swing.SwingWorker;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+/**
+ *
+ * @author Clemens Orthacker <clemens.orthacker@iaik.tugraz.at>
+ */
+public class URLFontLoader extends SwingWorker<Font, Object> implements FontProvider {
+
+  protected static final Log log = LogFactory.getLog(URLFontLoader.class);
+  protected URL fontURL;
+  protected Font font;
+
+  public URLFontLoader(URL codebase) throws MalformedURLException {
+    this.fontURL = new URL(codebase, SANSMONO_FONT_RESOURCE);
+    if (log.isDebugEnabled()) {
+      log.debug(Thread.currentThread() + " setting font load URL: " + fontURL);
+    }
+  }
+
+  public void loadInBackground() {
+    if (log.isDebugEnabled()) {
+      log.debug(Thread.currentThread() + " scheduling font loading in background: " + fontURL);
+    }
+    this.execute();
+  }
+
+  @Override
+  protected Font doInBackground() throws MalformedURLException, FontFormatException, IOException {
+    if (log.isDebugEnabled()) {
+      log.debug(Thread.currentThread() + " loading font in background...");
+    }
+    return Font.createFont(Font.TRUETYPE_FONT, fontURL.openStream());
+  }
+
+  /**
+   * waits for loadInBackground to finish 
+   * @return the font loaded in loadInbackground
+   * @throws Exception
+   */
+  @Override
+  public Font getFont() throws FontProviderException {
+    log.debug(Thread.currentThread() + " get font");
+    try {
+      return get();
+    } catch (InterruptedException ex) {
+      log.error("font loader interrupted");
+//      Thread.currentThread().interrupt();
+      throw new FontProviderException("font loader interrupted", ex);
+    } catch (ExecutionException ex) {
+      log.error("failed to load font", ex.getCause());
+      throw new FontProviderException("failed to load font", ex.getCause());
+    }
+  }
+}