[ui] Add two view manipulation functions

One moves and resizes the view in one operation as a bit of an
optimization as moving and resizing both update any child views, and
this does only one update.

The other sets the gravity and updates any child views as their
absolute positions would change as well as the updated view's absolute
position.

include/QF/ui/view.h

@@ -215,6 +215,28 @@ void view_resize (view_t *view, int xl, int yl);
 */
 void view_move (view_t *view, int xp, int yp);
 
+/** Chage the location and size of a view in a single operation.
+
+	The absolute X and Y coorinates of the view are updated as necessary to
+	keep the coordinates of the view's origin correct relative to the view's
+	geometry.
+
+	\param view		The view to move.
+	\param xp		The new X coordinate of the view relative to its gravity.
+	\param yp		The new Y coordinate of the view relative to its gravity.
+	\param xl		The new width of the view.
+	\param yl		The new height of the view.
+*/
+void view_setgeometry (view_t *view, int xp, int yp, int xl, int yl);
+
+/** Change the gravity of a view, adjusting its position appropriately
+
+	\param view		The view which will have its gravity set..
+	\param grav		The gravity of the view. determines the view's origin and
+					its positioning within the view's parent.
+*/
+void view_setgravity (view_t *view, grav_t grav);
+
 ///@}
 
 #endif//__QF_ui_view_h

libs/ui/view.c

@@ -221,3 +221,19 @@ view_move (view_t *view, int xp, int yp)
 	view->ypos = yp;
 	setgeometry (view);
 }
+
+VISIBLE void
+view_setgeometry (view_t *view, int xp, int yp, int xl, int yl)
+{
+	view->xpos = xp;
+	view->ypos = yp;
+	_resize (view, xl, yl);
+	setgeometry (view);
+}
+
+VISIBLE void
+view_setgravity (view_t *view, grav_t grav)
+{
+	view->gravity = grav;
+	setgeometry (view);
+}