--- /dev/null
+#include "openbox/actions.h"
+#include "openbox/client.h"
+#include "openbox/screen.h"
+#include "openbox/frame.h"
+#include <stdlib.h> /* for atoi */
+
+typedef struct {
+ gint left;
+ gint right;
+ gint top;
+ gint bottom;
+} Options;
+
+static gpointer setup_func(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node);
+static void free_func(gpointer options);
+static gboolean run_func(ObActionsData *data, gpointer options);
+
+void action_resizerelative_startup()
+{
+ actions_register("ResizeRelative",
+ setup_func,
+ free_func,
+ run_func,
+ NULL, NULL);
+}
+
+static gpointer setup_func(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node)
+{
+ xmlNodePtr n;
+ Options *o;
+
+ o = g_new0(Options, 1);
+
+ if ((n = parse_find_node("left", node)))
+ o->left = parse_int(doc, n);
+ if ((n = parse_find_node("right", node)))
+ o->right = parse_int(doc, n);
+ if ((n = parse_find_node("top", node)))
+ o->top = parse_int(doc, n);
+ if ((n = parse_find_node("bottom", node)))
+ o->bottom = parse_int(doc, n);
+
+ return o;
+}
+
+static void free_func(gpointer options)
+{
+ Options *o = options;
+
+ g_free(o);
+}
+
+/* Always return FALSE because its not interactive */
+static gboolean run_func(ObActionsData *data, gpointer options)
+{
+ Options *o = options;
+
+ if (data->client) {
+ ObClient *c = data->client;
+ gint x, y, ow, xoff, nw, oh, yoff, nh, lw, lh;
+
+ x = c->area.x;
+ y = c->area.y;
+ ow = c->area.width;
+ xoff = -o->left * c->size_inc.width;
+ nw = ow + o->right * c->size_inc.width
+ + o->left * c->size_inc.width;
+ oh = c->area.height;
+ yoff = -o->top * c->size_inc.height;
+ nh = oh + o->bottom * c->size_inc.height
+ + o->top * c->size_inc.height;
+
+ client_try_configure(c, &x, &y, &nw, &nh, &lw, &lh, TRUE);
+ xoff = xoff == 0 ? 0 :
+ (xoff < 0 ? MAX(xoff, ow-nw) : MIN(xoff, ow-nw));
+ yoff = yoff == 0 ? 0 :
+ (yoff < 0 ? MAX(yoff, oh-nh) : MIN(yoff, oh-nh));
+
+ actions_client_move(data, FALSE);
+ client_move_resize(c, x + xoff, y + yoff, nw, nh);
+ actions_client_move(data, TRUE);
+ }
+
+ return FALSE;
+}