allow monochrome toggle

src/com/bytezone/diskbrowser/applefile/HiResImage.java

@@ -21,7 +21,7 @@ public class HiResImage extends AbstractFile
 
   private static boolean colourQuirks;
   private static boolean matchColourBits = true;
-  private static boolean drawColour = true;
+  private static boolean monochrome;
 
   private final int[] line = new int[280];
   private final int[] colourBits = new int[280];
@@ -39,10 +39,10 @@ public class HiResImage extends AbstractFile
 
     if (isGif (buffer))
       makeGif ();
-    else if (drawColour)
-      drawColour (buffer);
-    else
+    else if (monochrome)
       drawMonochrome (buffer);
+    else
+      drawColour (buffer);
   }
 
   public HiResImage (String name, byte[] buffer, int fileType, int auxType)
@@ -66,15 +66,32 @@ public class HiResImage extends AbstractFile
     colourQuirks = value;
   }
 
+  public static void setDefaultMonochrome (boolean value)
+  {
+    monochrome = value;
+  }
+
   public void setColourQuirks (boolean value)
   {
-    if (colourQuirks == value || !drawColour)
+    if (colourQuirks == value || monochrome)
       return;
 
     colourQuirks = value;
     drawColour (buffer);
   }
 
+  public void setMonochrome (boolean value)
+  {
+    if (monochrome == value)
+      return;
+
+    monochrome = value;
+    if (monochrome)
+      drawMonochrome (buffer);
+    else
+      drawColour (buffer);
+  }
+
   private void drawMonochrome (byte[] buffer)
   {
     int rows = buffer.length <= 8192 ? 192 : 384;

src/com/bytezone/diskbrowser/gui/DataPanel.java

@@ -125,6 +125,7 @@ class DataPanel extends JTabbedPane
 
     mh.lineWrapItem.setAction (new LineWrapAction (formattedText));
     mh.colourQuirksItem.setAction (new ColourQuirksAction (this));
+    mh.monochromeItem.setAction (new MonochromeAction (this));
   }
 
   public void setColourQuirks (boolean value)
@@ -137,6 +138,16 @@ class DataPanel extends JTabbedPane
     }
   }
 
+  public void setMonochrome (boolean value)
+  {
+    if (currentDataSource instanceof HiResImage)
+    {
+      HiResImage image = (HiResImage) currentDataSource;
+      image.setMonochrome (value);
+      imagePanel.setImage (image.getImage ());
+    }
+  }
+
   private void setTabsFont (Font font)
   {
     formattedText.setFont (font);

src/com/bytezone/diskbrowser/gui/MenuHandler.java

@@ -24,6 +24,7 @@ public class MenuHandler
   private static final String PREFS_SHOW_LAYOUT = "show layout";
   private static final String PREFS_SHOW_FREE_SECTORS = "show free sectors";
   private static final String PREFS_COLOUR_QUIRKS = "colour quirks";
+  private static final String PREFS_MONOCHROME = "monochrome";
 
   FormattedDisk currentDisk;
 
@@ -59,6 +60,7 @@ public class MenuHandler
   JMenuItem interleave3Item = new JRadioButtonMenuItem (new InterleaveAction (3));
 
   JMenuItem colourQuirksItem = new JCheckBoxMenuItem ("Colour quirks");
+  JMenuItem monochromeItem = new JCheckBoxMenuItem ("Monochrome");
 
   public MenuHandler (Preferences prefs)
   {
@@ -107,6 +109,7 @@ public class MenuHandler
     formatMenu.add (sector512Item);
     formatMenu.addSeparator ();
     formatMenu.add (colourQuirksItem);
+    formatMenu.add (monochromeItem);
 
     helpMenu.add (new JMenuItem (new EnvironmentAction ()));
 
@@ -133,7 +136,10 @@ public class MenuHandler
     showCatalogItem.setSelected (prefs.getBoolean (PREFS_SHOW_CATALOG, true));
     showFreeSectorsItem.setSelected (prefs.getBoolean (PREFS_SHOW_FREE_SECTORS, false));
     colourQuirksItem.setSelected (prefs.getBoolean (PREFS_COLOUR_QUIRKS, false));
+    monochromeItem.setSelected (prefs.getBoolean (PREFS_MONOCHROME, false));
+
     HiResImage.setDefaultColourQuirks (colourQuirksItem.isSelected ());
+    HiResImage.setDefaultMonochrome (monochromeItem.isSelected ());
   }
 
   void addHelpMenuAction (Action action, String functionName)
@@ -188,6 +194,7 @@ public class MenuHandler
     prefs.putBoolean (PREFS_SHOW_CATALOG, showCatalogItem.isSelected ());
     prefs.putBoolean (PREFS_SHOW_FREE_SECTORS, showFreeSectorsItem.isSelected ());
     prefs.putBoolean (PREFS_COLOUR_QUIRKS, colourQuirksItem.isSelected ());
+    prefs.putBoolean (PREFS_MONOCHROME, monochromeItem.isSelected ());
   }
 
   @Override

src/com/bytezone/diskbrowser/gui/MonochromeAction.java

@@ -0,0 +1,29 @@
+package com.bytezone.diskbrowser.gui;
+
+import java.awt.event.ActionEvent;
+import java.awt.event.KeyEvent;
+
+import javax.swing.AbstractAction;
+import javax.swing.Action;
+import javax.swing.JMenuItem;
+import javax.swing.KeyStroke;
+
+public class MonochromeAction extends AbstractAction
+{
+  private final DataPanel owner;
+
+  public MonochromeAction (DataPanel owner)
+  {
+    super ("Monochrome");
+    putValue (Action.SHORT_DESCRIPTION, "Display image in monochrome or color");
+    putValue (Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke ("alt M"));
+    putValue (Action.MNEMONIC_KEY, KeyEvent.VK_M);
+    this.owner = owner;
+  }
+
+  @Override
+  public void actionPerformed (ActionEvent e)
+  {
+    owner.setMonochrome (((JMenuItem) e.getSource ()).isSelected ());
+  }
+}