=== modified file 'src/defaults.c'
--- old/src/defaults.c	2009-09-16 12:33:40 +0000
+++ new/src/defaults.c	2009-09-17 06:43:08 +0000
@@ -300,7 +300,7 @@
 	}
 
 	// protect against out-of-bounds values for gravity
-	if (gravity != GRAVITY_EAST && gravity != GRAVITY_NORTH_EAST)
+	if (gravity < GRAVITY_NONE || gravity > GRAVITY_MAX_VALUE)
 		gravity = DEFAULT_GRAVITY;
 
 	// update stored DPI-value
@@ -1866,7 +1866,7 @@
 				"gravity",
 				"Positional hint for placing bubbles",
 				0,
-				2,
+				GRAVITY_MAX_VALUE,
 				DEFAULT_GRAVITY,
 				G_PARAM_CONSTRUCT |
 				G_PARAM_READWRITE |

=== modified file 'src/defaults.h'
--- old/src/defaults.h	2009-09-10 13:11:32 +0000
+++ new/src/defaults.h	2009-09-17 06:42:23 +0000
@@ -58,7 +58,12 @@
 {
         GRAVITY_NONE = 0,
         GRAVITY_NORTH_EAST, // top-right of screen
-        GRAVITY_EAST        // vertically centered at right of screen
+        GRAVITY_EAST,       // vertically centered at right of screen
+        GRAVITY_SOUTH_EAST, // bottom-right of screen
+        GRAVITY_SOUTH_WEST, // bottom-left of screen
+        GRAVITY_WEST,       // vertically centered at left of screen
+        GRAVITY_NORTH_WEST, // top-left of screen
+        GRAVITY_MAX_VALUE = GRAVITY_NORTH_WEST
 } Gravity;
 
 typedef enum

=== modified file 'src/stack.c'
--- old/src/stack.c	2009-09-10 13:11:32 +0000
+++ new/src/stack.c	2009-09-17 06:24:26 +0000
@@ -884,6 +884,11 @@
 	{
 		Defaults* d;
 
+		case GRAVITY_WEST:
+ 			d = self->defaults;
+			*x = defaults_get_bubble_horz_gap (d);
+			// fall through
+
 		case GRAVITY_EAST:
 			d = self->defaults;
 
@@ -900,6 +905,11 @@
 				      EM2PIXELS (defaults_get_bubble_shadow_size (d), d);
 		break;
 
+		case GRAVITY_NORTH_WEST:
+			d = self->defaults;
+			*x = defaults_get_bubble_horz_gap (d);
+			// fall through
+
 		case GRAVITY_NORTH_EAST:
 			d = self->defaults;
 
@@ -934,6 +944,30 @@
 			}
 		break;
 
+		case GRAVITY_SOUTH_WEST:
+			d = self->defaults;
+			*x = defaults_get_bubble_horz_gap (d);
+			// fall through
+
+		case GRAVITY_SOUTH_EAST:
+			d = self->defaults;
+
+			if (slot == SLOT_BOTTOM)
+			{
+				*y += defaults_get_desktop_height(d) -
+					EM2PIXELS (defaults_get_bubble_vert_gap (d) / 2.0f, d) -
+					bubble_height -
+					EM2PIXELS (defaults_get_bubble_shadow_size (d), d);
+			}
+			else if (slot == SLOT_TOP)
+			{
+				*y += defaults_get_desktop_height(d) -
+					EM2PIXELS (defaults_get_bubble_vert_gap (d), d) -
+					bubble_height * 2 -
+					EM2PIXELS (defaults_get_bubble_shadow_size (d), d);
+			}
+		break;
+            
 		default:
 			g_warning ("Unhandled placement!\n");
 		break;