Fix #5643, #5064: rounding issues in floating-point -> integer conversions

Currently, various floating-point expressions involving
the coordinates of borders, titlebars and content surfaces
are directly assigned to integers, and so they are rounded
towards zero.

This results in off-by-one distances between these elements
when the signs of their coordinates differ.

Fixed by wrapping these expressions with a call to
floor before the assignment.

1 files changed, 2 insertions, 2 deletions

diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index 691a285d..7871a136 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -105,8 +105,8 @@ static bool get_surface_box(struct surface_iterator_data *data,
                 data->rotation);
 
         struct wlr_box box = {
-                .x = data->ox + _sx,
-                .y = data->oy + _sy,
+                .x = floor(data->ox + _sx),
+                .y = floor(data->oy + _sy),
                 .width = sw,
                 .height = sh,
         };