=== modified file 'lib/DockPreferences.vala'
--- lib/DockPreferences.vala	2013-02-03 11:18:05 +0000
+++ lib/DockPreferences.vala	2013-03-19 10:05:46 +0000
@@ -52,7 +52,7 @@
 		[Description(nick = "position", blurb = "The position for the dock on the monitor.")]
 		public PositionType Position { get; set; }
 		
-		[Description(nick = "offset", blurb = "The dock's position offset from center (in percent).")]
+		[Description(nick = "offset", blurb = "The dock's position offset from left/center/right depending on its alignment (in pixel).")]
 		public int Offset { get; set; }
 		
 		[Description(nick = "theme", blurb = "The name of the dock's theme to use.")]
@@ -188,10 +188,6 @@
 				break;
 			
 			case "Offset":
-				if (Offset < -100)
-					Offset = -100;
-				else if (Offset > 100)
-					Offset = 100;
 				break;
 			
 			case "Theme":

=== modified file 'lib/PositionManager.vala'
--- lib/PositionManager.vala	2012-11-04 15:49:57 +0000
+++ lib/PositionManager.vala	2013-03-19 12:50:34 +0000
@@ -346,21 +346,27 @@
 			var yoffset = (DockHeight - static_dock_region.height) / 2;
 			
 			if (screen_is_composited) {
-				xoffset = (int) ((1 + controller.prefs.Offset / 100.0) * xoffset);
-				yoffset = (int) ((1 + controller.prefs.Offset / 100.0) * yoffset);
+				var offset = controller.prefs.Offset;
 				
 				switch (controller.prefs.Alignment) {
 				default:
 				case Align.CENTER:
+					var max_xoffset = (monitor_geo.width - static_dock_region.width) / 2;
+					var max_yoffset = (monitor_geo.height - static_dock_region.height) / 2;
+					xoffset += (offset > max_xoffset ? max_xoffset : (offset < -max_xoffset ? -max_xoffset : offset));
+					yoffset += (offset > max_yoffset ? max_yoffset : (offset < -max_yoffset ? -max_yoffset : offset));
+					break;
 				case Align.FILL:
 					break;
 				case Align.START:
-					xoffset = 0;
-					yoffset = (monitor_geo.height - static_dock_region.height);
+					offset = (offset > 0 ? offset : 0);
+					xoffset = offset;
+					yoffset = offset + (monitor_geo.height - static_dock_region.height);
 					break;
 				case Align.END:
-					xoffset = (monitor_geo.width - static_dock_region.width);
-					yoffset = 0;
+					offset = (offset > 0 ? offset : 0);
+					xoffset = -offset + (monitor_geo.width - static_dock_region.width);
+					yoffset = -offset;
 					break;
 				}
 			}
@@ -661,21 +667,27 @@
 			var yoffset = 0;
 			
 			if (!screen_is_composited) {
-				xoffset = (int) ((1 + controller.prefs.Offset / 100.0) * (monitor_geo.width - DockWidth) / 2);
-				yoffset = (int) ((1 + controller.prefs.Offset / 100.0) * (monitor_geo.height - DockHeight) / 2);
+				var offset = controller.prefs.Offset;
 				
 				switch (controller.prefs.Alignment) {
 				default:
 				case Align.CENTER:
+					var max_xoffset = (monitor_geo.width - static_dock_region.width) / 2;
+					var max_yoffset = (monitor_geo.height - static_dock_region.height) / 2;
+					xoffset += (offset > max_xoffset ? max_xoffset : (offset < -max_xoffset ? -max_xoffset : offset));
+					yoffset += (offset > max_yoffset ? max_yoffset : (offset < -max_yoffset ? -max_yoffset : offset));
+					break;
 				case Align.FILL:
 					break;
 				case Align.START:
-					xoffset = 0;
-					yoffset = (monitor_geo.height - static_dock_region.height);
+					offset = (offset > 0 ? offset : 0);
+					xoffset = offset;
+					yoffset = offset + (monitor_geo.height - static_dock_region.height);
 					break;
 				case Align.END:
-					xoffset = (monitor_geo.width - static_dock_region.width);
-					yoffset = 0;
+					offset = (offset > 0 ? offset : 0);
+					xoffset = -offset + (monitor_geo.width - static_dock_region.width);
+					yoffset = -offset;
 					break;
 				}
 			}