cmd_reload: recalc font sizing + rebuild textures

When the config gets reloaded, the font height and baseline get reset to
0. If the config does not have a font command in it, the variables will
remain at 0 causing a transparent area where the title would be
rendered.

This makes it so the font height and baseline are recalculated. Additionally,
since the font height and baseline may have changed due to the reload, the
title and marks textures are rebuilt.

sway/commands/reload.c

@@ -5,9 +5,17 @@
 #include "sway/ipc-server.h"
 #include "sway/server.h"
 #include "sway/tree/arrange.h"
+#include "sway/tree/view.h"
 #include "list.h"
 #include "log.h"
 
+static void rebuild_textures_iterator(struct sway_container *con, void *data) {
+	if (con->view) {
+		view_update_marks_textures(con->view);
+	}
+	container_update_title_textures(con);
+}
+
 static void do_reload(void *data) {
 	// store bar ids to check against new bars for barconfig_update events
 	list_t *bar_ids = create_list();
@@ -40,6 +48,9 @@ static void do_reload(void *data) {
 	list_foreach(bar_ids, free);
 	list_free(bar_ids);
 
+	config_update_font_height(true);
+	root_for_each_container(rebuild_textures_iterator, NULL);
+
 	arrange_root();
 }