X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fappletgui%2FFontChooser.java;h=85537bf53f508d795ee0d1bb2cb26929b4b2a16f;hb=865a855a4ca87eadb3e5ff284ed32ed307d9c34b;hp=7a27df89754ca2375e4c73b44391e22d524bd400;hpb=a45774ee31d9f35d4eff46d54d7deab719afb092;p=jalview.git

diff --git a/src/jalview/appletgui/FontChooser.java b/src/jalview/appletgui/FontChooser.java
index 7a27df8..85537bf 100755
--- a/src/jalview/appletgui/FontChooser.java
+++ b/src/jalview/appletgui/FontChooser.java
@@ -1,19 +1,20 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.7)
- * Copyright (C) 2011 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8.0b1)
+ * Copyright (C) 2014 The Jalview Authors
  * 
  * This file is part of Jalview.
  * 
  * Jalview 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 3 of the License, or (at your option) any later version.
- * 
+ *  
  * Jalview 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 Jalview.  If not, see <http://www.gnu.org/licenses/>.
+ * The Jalview Authors are detailed in the 'AUTHORS' file.
  */
 package jalview.appletgui;
 
@@ -153,20 +154,58 @@ public class FontChooser extends Panel implements ActionListener,
     frame.setVisible(false);
   }
 
+  private Font lastSelected = null;
+
+  private int lastSelStyle = 0;
+
+  private int lastSelSize = 0;
+
+  /**
+   * DOCUMENT ME!
+   */
   void changeFont()
   {
+    if (lastSelected == null)
+    {
+      // initialise with original font
+      lastSelected = oldFont;
+      lastSelSize = oldFont.getSize();
+      lastSelStyle = oldFont.getStyle();
+    }
+
     Font newFont = new Font(fontName.getSelectedItem().toString(),
             fontStyle.getSelectedIndex(), Integer.parseInt(fontSize
                     .getSelectedItem().toString()));
-    if (ap != null)
+    FontMetrics fm = getGraphics().getFontMetrics(newFont);
+    double mw = fm.getStringBounds("M", getGraphics()).getWidth(), iw = fm
+            .getStringBounds("I", getGraphics()).getWidth();
+    if (mw < 1 || iw < 1)
     {
-      ap.av.setFont(newFont);
-      ap.fontChanged();
+      // TODO: JAL-1100
+      fontName.select(lastSelected.getName());
+      fontStyle.select(lastSelStyle);
+      fontSize.select("" + lastSelSize);
+      JVDialog d = new JVDialog(this.frame, "Invalid Font", true, 350, 200);
+      Panel mp = new Panel();
+      d.cancel.setVisible(false);
+      mp.setLayout(new FlowLayout());
+      mp.add(new Label(
+              "Font doesn't have letters defined\nso cannot be used\nwith alignment data."));
+      d.setMainPanel(mp);
+      d.setVisible(true);
+      return;
     }
-    else if (tp != null)
+    if (tp != null)
     {
       tp.setTreeFont(newFont);
     }
+    else if (ap != null)
+    {
+      ap.av.setFont(newFont);
+      ap.fontChanged();
+    }
+    // remember last selected
+    lastSelected = newFont;
   }
 
   protected void fontName_actionPerformed()