add deco_rect property to con in ipc response

docs/ipc

@@ -316,6 +316,10 @@ window_rect (map)::
 	So, when using the +default+ layout, you will have a 2 pixel border on
 	each side, making the window_rect +{ "x": 2, "y": 0, "width": 632,
 	"height": 366 }+ (for example).
+deco_rect (map)::
+	The coordinates of the *window decoration* inside its container. These
+	coordinates are relative to the container and do not include the actual
+	client window.
 geometry (map)::
 	The original geometry the window specified when i3 mapped it. Used when
 	switching a window to floating mode, for example.

src/ipc.c

@@ -347,6 +347,7 @@ void dump_node(yajl_gen gen, struct Con *con, bool inplace_restart) {
     y(integer, con->current_border_width);
 
     dump_rect(gen, "rect", con->rect);
+    dump_rect(gen, "deco_rect", con->deco_rect);
     dump_rect(gen, "window_rect", con->window_rect);
     dump_rect(gen, "geometry", con->geometry);
 

src/load_layout.c

@@ -24,6 +24,7 @@ static Con *json_node;
 static Con *to_focus;
 static bool parsing_swallows;
 static bool parsing_rect;
+static bool parsing_deco_rect;
 static bool parsing_window_rect;
 static bool parsing_geometry;
 static bool parsing_focus;
@@ -47,7 +48,7 @@ static int json_start_map(void *ctx) {
         match_init(current_swallow);
         TAILQ_INSERT_TAIL(&(json_node->swallow_head), current_swallow, matches);
     } else {
-        if (!parsing_rect && !parsing_window_rect && !parsing_geometry) {
+        if (!parsing_rect && !parsing_deco_rect && !parsing_window_rect && !parsing_geometry) {
             if (last_key && strcasecmp(last_key, "floating_nodes") == 0) {
                 DLOG("New floating_node\n");
                 Con *ws = con_get_workspace(json_node);
@@ -68,7 +69,7 @@ static int json_start_map(void *ctx) {
 
 static int json_end_map(void *ctx) {
     LOG("end of map\n");
-    if (!parsing_swallows && !parsing_rect && !parsing_window_rect && !parsing_geometry) {
+    if (!parsing_swallows && !parsing_rect && !parsing_deco_rect && !parsing_window_rect && !parsing_geometry) {
         /* Set a few default values to simplify manually crafted layout files. */
         if (json_node->layout == L_DEFAULT) {
             DLOG("Setting layout = L_SPLITH\n");
@@ -121,12 +122,11 @@ static int json_end_map(void *ctx) {
         x_con_init(json_node, json_node->depth);
         json_node = json_node->parent;
     }
-    if (parsing_rect)
-        parsing_rect = false;
-    if (parsing_window_rect)
-        parsing_window_rect = false;
-    if (parsing_geometry)
-        parsing_geometry = false;
+
+    parsing_rect = false;
+    parsing_deco_rect = false;
+    parsing_window_rect = false;
+    parsing_geometry = false;
     return 1;
 }
 
@@ -175,6 +175,9 @@ static int json_key(void *ctx, const unsigned char *val, size_t len) {
     if (strcasecmp(last_key, "rect") == 0)
         parsing_rect = true;
 
+    if (strcasecmp(last_key, "deco_rect") == 0)
+        parsing_deco_rect = true;
+
     if (strcasecmp(last_key, "window_rect") == 0)
         parsing_window_rect = true;
 
@@ -532,6 +535,7 @@ void tree_append_json(Con *con, const char *filename, char **errormsg) {
     to_focus = NULL;
     parsing_swallows = false;
     parsing_rect = false;
+    parsing_deco_rect = false;
     parsing_window_rect = false;
     parsing_geometry = false;
     parsing_focus = false;

testcases/t/116-nestedcons.t

@@ -54,6 +54,7 @@ my $expected = {
     type => 'root',
     id => $ignore,
     rect => $ignore,
+    deco_rect => $ignore,
     window_rect => $ignore,
     geometry => $ignore,
     swallows => $ignore,