Count descendant views for hide_edge_borders smart

include/sway/tree/container.h

@@ -187,6 +187,9 @@ bool container_has_anscestor(struct sway_container *container,
 bool container_has_child(struct sway_container *con,
 		struct sway_container *child);
 
+int container_count_descendants_of_type(struct sway_container *con,
+		enum sway_container_type type);
+
 void container_create_notify(struct sway_container *container);
 
 void container_damage_whole(struct sway_container *container);

sway/desktop/output.c

@@ -322,8 +322,8 @@ static void render_container_simple_border_normal(struct sway_output *output,
 	struct wlr_box box;
 	float color[4];
 
-	struct sway_container *workspace = container_parent(con, C_WORKSPACE);
+	struct sway_container *ws = container_parent(con, C_WORKSPACE);
-	int other_views = workspace->children->length - 1;
+	int other_views = container_count_descendants_of_type(ws, C_VIEW) - 1;
 
 	if (config->hide_edge_borders != E_VERTICAL
 			&& config->hide_edge_borders != E_BOTH
@@ -424,8 +424,8 @@ static void render_container_simple_border_pixel(struct sway_output *output,
 	struct wlr_box box;
 	float color[4];
 
-	struct sway_container *workspace = container_parent(con, C_WORKSPACE);
+	struct sway_container *ws = container_parent(con, C_WORKSPACE);
-	int other_views = workspace->children->length - 1;
+	int other_views = container_count_descendants_of_type(ws, C_VIEW) - 1;
 
 	if (config->hide_edge_borders != E_VERTICAL
 			&& config->hide_edge_borders != E_BOTH

sway/tree/container.c

@@ -547,6 +547,20 @@ bool container_has_child(struct sway_container *con,
 	return container_find(con, find_child_func, child);
 }
 
+int container_count_descendants_of_type(struct sway_container *con,
+		enum sway_container_type type) {
+	int children = 0;
+	if (con->type == type) {
+		children++;
+	} else if (con->children) {
+		for (int i = 0; i < con->children->length; i++) {
+			struct sway_container *child = con->children->items[i];
+			children += container_count_descendants_of_type(child, type);
+		}
+	}
+	return children;
+}
+
 void container_damage_whole(struct sway_container *container) {
 	for (int i = 0; i < root_container.children->length; ++i) {
 		struct sway_container *cont = root_container.children->items[i];

sway/tree/view.c

@@ -101,7 +101,7 @@ void view_autoconfigure(struct sway_view *view) {
 	}
 
 	struct sway_container *ws = container_parent(view->swayc, C_WORKSPACE);
-	int other_views = ws->children->length - 1;
+	int other_views = container_count_descendants_of_type(ws, C_VIEW) - 1;
 
 	double x, y, width, height;
 	x = y = width = height = 0;