tree/container: ensure pixman rect is valid in container_arrange_title_bar()

Fixes "Invalid rectangle passed" errors printed by Pixman.

1 files changed, 4 insertions, 0 deletions

diff --git a/sway/tree/container.c b/sway/tree/container.c
index 9224b4fb..80ef34fe 100644
--- a/sway/tree/container.c
+++ b/sway/tree/container.c
@@ -352,6 +352,8 @@ void container_arrange_title_bar(struct sway_container *con) {
 
                 int alloc_width = MIN((int)node->width,
                         width - h_padding - config->titlebar_h_padding);
+                alloc_width = MAX(alloc_width, 0);
+
                 sway_text_node_set_max_width(node, alloc_width);
                 wlr_scene_node_set_position(node->node,
                         h_padding, (height - node->height) >> 1);
@@ -376,6 +378,8 @@ void container_arrange_title_bar(struct sway_container *con) {
 
                 int alloc_width = MIN((int) node->width,
                         width - h_padding - config->titlebar_h_padding);
+                alloc_width = MAX(alloc_width, 0);
+
                 sway_text_node_set_max_width(node, alloc_width);
                 wlr_scene_node_set_position(node->node,
                         h_padding, (height - node->height) >> 1);