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 afd2d62..1504f41 100755 (executable)
--- a/src/jalview/gui/FontChooser.java
+++ b/src/jalview/gui/FontChooser.java
@@ -1,20 +1,19 @@
 /*
- * Jalview - A Sequence Alignment Editor and Viewer (Development Version 2.4.1)
- * Copyright (C) 2009 AM Waterhouse, J Procter, 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 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 file is part of Jalview.
  * 
- * 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.
+ * 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 this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ * You should have received a copy of the GNU General Public License along with Jalview.  If not, see <http://www.gnu.org/licenses/>.
  */
 package jalview.gui;
 
@@ -24,6 +23,7 @@ import javax.swing.*;
 
 import jalview.bin.*;
 import jalview.jbgui.*;
+import jalview.util.MessageManager;
 
 /**
  * DOCUMENT ME!
@@ -47,7 +47,7 @@ public class FontChooser extends GFontChooser
    * Creates a new FontChooser object.
    * 
    * @param ap
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   public FontChooser(TreePanel tp)
   {
@@ -63,7 +63,7 @@ public class FontChooser extends GFontChooser
    * Creates a new FontChooser object.
    * 
    * @param ap
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   public FontChooser(AlignmentPanel ap)
   {
@@ -81,12 +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);
@@ -131,7 +131,7 @@ public class FontChooser extends GFontChooser
    * DOCUMENT ME!
    * 
    * @param e
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   protected void ok_actionPerformed(ActionEvent e)
   {
@@ -155,7 +155,7 @@ public class FontChooser extends GFontChooser
    * DOCUMENT ME!
    * 
    * @param e
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   protected void cancel_actionPerformed(ActionEvent e)
   {
@@ -180,14 +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);
@@ -198,19 +234,16 @@ 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;
   }
 
   /**
    * DOCUMENT ME!
    * 
    * @param e
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   protected void fontName_actionPerformed(ActionEvent e)
   {
@@ -226,7 +259,7 @@ public class FontChooser extends GFontChooser
    * DOCUMENT ME!
    * 
    * @param e
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   protected void fontSize_actionPerformed(ActionEvent e)
   {
@@ -242,7 +275,7 @@ public class FontChooser extends GFontChooser
    * DOCUMENT ME!
    * 
    * @param e
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   protected void fontStyle_actionPerformed(ActionEvent e)
   {
@@ -258,14 +291,14 @@ public class FontChooser extends GFontChooser
    * DOCUMENT ME!
    * 
    * @param e
-   *                DOCUMENT ME!
+   *          DOCUMENT ME!
    */
   public void defaultButton_actionPerformed(ActionEvent e)
   {
     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()));
   }
 }