JAL-1355 (basic i18n support)

[jalview.git] / src / jalview / gui / FontChooser.java

diff --git a/src/jalview/gui/FontChooser.java b/src/jalview/gui/FontChooser.java
index dc48671..1504f41 100755 (executable)
--- a/src/jalview/gui/FontChooser.java
+++ b/src/jalview/gui/FontChooser.java
@@ -1,13 +1,13 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Version 2.5)
- * Copyright (C) 2010 J Procter, AM Waterhouse, G Barton, M Clamp, S Searle
+ * Jalview - A Sequence Alignment Editor and Viewer (Version 2.8)
+ * Copyright (C) 2012 J Procter, AM Waterhouse, LM Lui, J Engelhardt, G Barton, M Clamp, S Searle
  * 
  * 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 
@@ -23,6 +23,7 @@ import javax.swing.*;
 
 import jalview.bin.*;
 import jalview.jbgui.*;
+import jalview.util.MessageManager;
 
 /**
  * DOCUMENT ME!
@@ -80,12 +81,12 @@ public class FontChooser extends GFontChooser
 
     if (tp != null)
     {
-      Desktop.addInternalFrame(frame, "Change Font (Tree Panel)", 340, 170,
+      Desktop.addInternalFrame(frame, MessageManager.getString("action.change_font_tree_panel"), 340, 170,
               false);
     }
     else
     {
-      Desktop.addInternalFrame(frame, "Change Font", 340, 170, false);
+      Desktop.addInternalFrame(frame, MessageManager.getString("action.change_font"), 340, 170, false);
     }
 
     frame.setLayer(JLayeredPane.PALETTE_LAYER);
@@ -179,14 +180,50 @@ public class FontChooser extends GFontChooser
     }
   }
 
+  private Font lastSelected = null;
+
+  private int lastSelStyle = 0;
+
+  private int lastSelSize = 0;
+
+  private boolean lastSelMono = false;
+
   /**
    * DOCUMENT ME!
    */
   void changeFont()
   {
+    if (lastSelected == null)
+    {
+      // initialise with original font
+      lastSelected = oldFont;
+      lastSelSize = oldFont.getSize();
+      lastSelStyle = oldFont.getStyle();
+      FontMetrics fm = getGraphics().getFontMetrics(oldFont);
+      double mw = fm.getStringBounds("M", getGraphics()).getWidth(), iw = fm
+              .getStringBounds("I", getGraphics()).getWidth();
+      lastSelMono = mw == iw;
+    }
+
     Font newFont = new Font(fontName.getSelectedItem().toString(),
             fontStyle.getSelectedIndex(), Integer.parseInt(fontSize
                     .getSelectedItem().toString()));
+    FontMetrics fm = getGraphics().getFontMetrics(newFont);
+    double mw = fm.getStringBounds("M", getGraphics()).getWidth(), iw = fm
+            .getStringBounds("I", getGraphics()).getWidth();
+    if (mw < 1 || iw < 1)
+    {
+      fontName.setSelectedItem(lastSelected.getName());
+      fontStyle.setSelectedIndex(lastSelStyle);
+      fontSize.setSelectedItem("" + lastSelSize);
+      monospaced.setSelected(lastSelMono);
+      JOptionPane
+              .showInternalMessageDialog(
+                      this,
+                      "Font doesn't have letters defined\nso cannot be used\nwith alignment data.",
+                      "Invalid Font", JOptionPane.WARNING_MESSAGE);
+      return;
+    }
     if (tp != null)
     {
       tp.setTreeFont(newFont);
@@ -197,12 +234,9 @@ public class FontChooser extends GFontChooser
       ap.fontChanged();
     }
 
-    FontMetrics fm = getGraphics().getFontMetrics(newFont);
-
-    monospaced.setSelected(fm.getStringBounds("M", getGraphics())
-            .getWidth() == fm.getStringBounds("|", getGraphics())
-            .getWidth());
-
+    monospaced.setSelected(mw == iw);
+    // remember last selected
+    lastSelected = newFont;
   }
 
   /**
@@ -264,7 +298,7 @@ public class FontChooser extends GFontChooser
     Cache.setProperty("FONT_NAME", fontName.getSelectedItem().toString());
     Cache.setProperty("FONT_STYLE", fontStyle.getSelectedIndex() + "");
     Cache.setProperty("FONT_SIZE", fontSize.getSelectedItem().toString());
-    Cache.setProperty("ANTI_ALIAS", Boolean.toString(smoothFont
-            .isSelected()));
+    Cache.setProperty("ANTI_ALIAS",
+            Boolean.toString(smoothFont.isSelected()));
   }
 }