X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fgui%2FFontChooser.java;h=535196e41089547c4c361e4d342e08c9b4cab918;hb=4b4c98b3be626bff6d72048447ebbac6070c2ee4;hp=92d2b2b22efbf76e9d19ef427d703d1664c3c80c;hpb=0c193e97c4cbf94e27ed356c20108fce733f4123;p=jalview.git

diff --git a/src/jalview/gui/FontChooser.java b/src/jalview/gui/FontChooser.java
index 92d2b2b..535196e 100755
--- a/src/jalview/gui/FontChooser.java
+++ b/src/jalview/gui/FontChooser.java
@@ -20,18 +20,19 @@
  */
 package jalview.gui;
 
+import jalview.bin.Cache;
+import jalview.jbgui.GFontChooser;
+import jalview.util.MessageManager;
+
 import java.awt.Font;
 import java.awt.FontMetrics;
 import java.awt.event.ActionEvent;
+import java.awt.geom.Rectangle2D;
 
 import javax.swing.JInternalFrame;
 import javax.swing.JLayeredPane;
 import javax.swing.JOptionPane;
 
-import jalview.bin.Cache;
-import jalview.jbgui.GFontChooser;
-import jalview.util.MessageManager;
-
 /**
  * DOCUMENT ME!
  * 
@@ -241,15 +242,17 @@ public class FontChooser extends GFontChooser
             fontStyle.getSelectedIndex(),
             (Integer) fontSize.getSelectedItem());
     FontMetrics fm = getGraphics().getFontMetrics(newFont);
-    double mw = fm.getStringBounds("M", getGraphics()).getWidth(), iw = fm
-            .getStringBounds("I", getGraphics()).getWidth();
+    double mw = fm.getStringBounds("M", getGraphics()).getWidth();
+    final Rectangle2D iBounds = fm.getStringBounds("I", getGraphics());
+    double iw = iBounds.getWidth();
     if (mw < 1 || iw < 1)
     {
-      JOptionPane
-              .showInternalMessageDialog(
-                      this,
-                      MessageManager.getString("label.font_doesnt_have_letters_defined"),
-                      MessageManager.getString("label.invalid_font"), JOptionPane.WARNING_MESSAGE);
+      final String messageKey = iBounds.getHeight() < 1 ? "label.font_doesnt_have_letters_defined"
+              : "label.font_too_small";
+      JOptionPane.showInternalMessageDialog(this,
+              MessageManager.getString(messageKey),
+              MessageManager.getString("label.invalid_font"),
+              JOptionPane.WARNING_MESSAGE);
       /*
        * Restore the changed value - note this will reinvoke this method via the
        * ActionListener, but now validation should pass