X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fbin%2FHiDPISetting.java;h=2bce6738ca5f94b59547ed36db1c12bd5972f21c;hb=d654b1f014790b7ae25e6eec631847170a930987;hp=d6d440a363298761080ea333db85f23dc7d60fe3;hpb=baba84a1007310a6da1d81de3abeb2a79563213f;p=jalview.git

diff --git a/src/jalview/bin/HiDPISetting.java b/src/jalview/bin/HiDPISetting.java
index d6d440a..2bce673 100644
--- a/src/jalview/bin/HiDPISetting.java
+++ b/src/jalview/bin/HiDPISetting.java
@@ -1,5 +1,27 @@
+/*
+ * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
+ * Copyright (C) $$Year-Rel$$ 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.bin;
 
+import java.util.Locale;
+
 import java.awt.HeadlessException;
 
 public class HiDPISetting
@@ -34,6 +56,8 @@ public class HiDPISetting
 
   public static int scale = 0;
 
+  public final static int MAX_SCALE = 8;
+
   private static boolean doneInit = false;
 
   private static boolean allowScalePropertyArg = false;
@@ -43,7 +67,7 @@ public class HiDPISetting
   static
   {
     String system = System.getProperty("os.name") == null ? null
-            : System.getProperty("os.name").toLowerCase();
+            : System.getProperty("os.name").toLowerCase(Locale.ROOT);
     if (system != null)
     {
       isLinux = system.indexOf("linux") > -1;
@@ -66,8 +90,17 @@ public class HiDPISetting
 
     // get and use command line property values first
     String setHiDPIProperty = System.getProperty(setHiDPIPropertyName);
-    setHiDPI = setHiDPIProperty != null
-            && setHiDPIProperty.equalsIgnoreCase("true");
+    boolean setHiDPIPropertyBool = Boolean.parseBoolean(setHiDPIProperty);
+
+    // allow -DsetHiDPI=false to turn off HiDPI scaling
+    if (setHiDPIProperty != null && !setHiDPIPropertyBool)
+    {
+      clear();
+      doneInit = true;
+      return;
+    }
+
+    setHiDPI = setHiDPIProperty != null && setHiDPIPropertyBool;
 
     String setHiDPIScaleProperty = System
             .getProperty(setHiDPIScalePropertyName);
@@ -76,6 +109,12 @@ public class HiDPISetting
       try
       {
         setHiDPIScale = Integer.parseInt(setHiDPIScaleProperty);
+        // if setHiDPIScale property is validly set and setHiDPI property wasn't
+        // attempted to be set we assume setHiDPIScale to be true
+        if (setHiDPIProperty == null)
+        {
+          setHiDPI = true;
+        }
       } catch (NumberFormatException e)
       {
         System.err.println(setHiDPIScalePropertyName + " property give ("
@@ -149,6 +188,16 @@ public class HiDPISetting
 
     int dimensionScale = 1 + (mindimension / bigScreenThreshold);
 
+    // reject outrageous values -- dpiScale in particular could be mistaken
+    if (dpiScale > MAX_SCALE)
+    {
+      dpiScale = 1;
+    }
+    if (dimensionScale > MAX_SCALE)
+    {
+      dimensionScale = 1;
+    }
+
     // choose larger of dimensionScale or dpiScale (most likely dimensionScale
     // as dpiScale often misreported)
     int autoScale = Math.max(dpiScale, dimensionScale);