GUAC-955: Add guacViewport directive which maintains content within the visible portion of the browser window, even if the browser magically scrolls itself.

guacamole/src/main/webapp/app/client/styles/client.css

@@ -39,7 +39,7 @@ body.client {
 
 .client-view {
     display: table;
-    position: fixed;
+    position: absolute;
     top: 0;
     left: 0;
     width: 100%;

guacamole/src/main/webapp/app/client/styles/viewport.css

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2013 Glyptodon LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+.viewport {
+    position: fixed;
+    bottom: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    overflow: hidden;
+}