Add support for DPI within size instruction and client info.

guacamole-common/src/main/java/org/glyptodon/guacamole/protocol/ConfiguredGuacamoleSocket.java

@@ -149,7 +149,8 @@ public class ConfiguredGuacamoleSocket implements GuacamoleSocket {
             new GuacamoleInstruction(
                 "size",
                 Integer.toString(info.getOptimalScreenWidth()),
-                Integer.toString(info.getOptimalScreenHeight())
+                Integer.toString(info.getOptimalScreenHeight()),
+                Integer.toString(info.getOptimalResolution())
             )
         );
 

guacamole-common/src/main/java/org/glyptodon/guacamole/protocol/GuacamoleClientInformation.java

@@ -59,14 +59,19 @@ public class GuacamoleClientInformation {
     private int optimalScreenHeight = 768;
 
     /**
-     * The list of audio mimetypes reported by the client to be supported.
+     * The resolution of the optimal dimensions given, in DPI.
      */
-    private List<String> audioMimetypes = new ArrayList<String>();
+    private int optimalResolution = 96;
 
     /**
      * The list of audio mimetypes reported by the client to be supported.
      */
-    private List<String> videoMimetypes = new ArrayList<String>();
+    private final List<String> audioMimetypes = new ArrayList<String>();
+
+    /**
+     * The list of audio mimetypes reported by the client to be supported.
+     */
+    private final List<String> videoMimetypes = new ArrayList<String>();
 
     /**
      * Returns the optimal screen width requested by the client, in pixels.
@@ -100,6 +105,26 @@ public class GuacamoleClientInformation {
         this.optimalScreenHeight = optimalScreenHeight;
     }
 
+    /**
+     * Returns the resolution of the screen if the optimal width and height are
+     * used, in DPI.
+     * 
+     * @return The optimal screen resolution.
+     */
+    public int getOptimalResolution() {
+        return optimalResolution;
+    }
+
+    /**
+     * Sets the resolution of the screen if the optimal width and height are
+     * used, in DPI.
+     * 
+     * @param optimalResolution The optimal screen resolution in DPI.
+     */
+    public void setOptimalResolution(int optimalResolution) {
+        this.optimalResolution = optimalResolution;
+    }
+
     /**
      * Returns the list of audio mimetypes supported by the client. To add or
      * removed supported mimetypes, the list returned by this function can be