Handle xdg-positioner stuff

1 files changed, 57 insertions, 16 deletions

diff --git a/sway/handlers.c b/sway/handlers.c
index cd685118..e2ff37f7 100644
--- a/sway/handlers.c
+++ b/sway/handlers.c
@@ -263,6 +263,62 @@ static void ws_cleanup() {
         }
 }
 
+static void positioner_place_window(wlc_handle handle) {
+        const struct wlc_geometry *anchor = wlc_view_positioner_get_anchor_rect(handle);
+        const struct wlc_size *sr = wlc_view_positioner_get_size(handle);
+        // a positioner is required to have a non-null anchor and a non-negative size
+        if (!anchor || !sr ||
+                sr->w <= 0 || sr->h <= 0 ||
+                anchor->size.w <= 0 || anchor->size.h <= 0) {
+                return;
+        }
+        const struct wlc_point offset = *wlc_view_positioner_get_offset(handle);
+        enum wlc_positioner_anchor_bit anchors = wlc_view_positioner_get_anchor(handle);
+        enum wlc_positioner_gravity_bit gravity = wlc_view_positioner_get_gravity(handle);
+        struct wlc_geometry geo = {
+                .origin = offset,
+                .size = *sr
+        };
+
+        if (anchors & WLC_BIT_ANCHOR_TOP) {
+                geo.origin.y += anchor->origin.y;
+        } else if (anchors & WLC_BIT_ANCHOR_BOTTOM) {
+                geo.origin.y += anchor->origin.y + anchor->size.h;
+        } else {
+                geo.origin.y += anchor->origin.y + anchor->size.h / 2;
+        }
+        if (anchors & WLC_BIT_ANCHOR_LEFT) {
+                geo.origin.x += anchor->origin.x;
+        } else if (anchors & WLC_BIT_ANCHOR_RIGHT) {
+                geo.origin.x += anchor->origin.x + anchor->size.w;
+        } else {
+                geo.origin.x += anchor->origin.x + anchor->size.w / 2;
+        }
+
+        if (gravity & WLC_BIT_GRAVITY_TOP) {
+                geo.origin.y -= geo.size.h;
+        } else if (gravity & WLC_BIT_GRAVITY_BOTTOM) {
+                /* default */
+        } else {
+                geo.origin.y -= geo.size.h / 2;
+        }
+        if (gravity & WLC_BIT_GRAVITY_LEFT) {
+                geo.origin.x -= geo.size.w;
+        } else if (gravity & WLC_BIT_GRAVITY_RIGHT) {
+                /* default */
+        } else {
+                geo.origin.x -= geo.size.w / 2;
+        } 
+
+        wlc_handle parent = wlc_view_get_parent(handle);
+        if (parent) {
+                const struct wlc_geometry *pg = wlc_view_get_geometry(parent);
+                geo.origin.x += pg->origin.x;
+                geo.origin.y += pg->origin.y;
+        }
+        wlc_view_set_geometry(handle, 0, &geo);
+}
+
 static bool handle_view_created(wlc_handle handle) {
         // if view is child of another view, the use that as focused container
         wlc_handle parent = wlc_view_get_parent(handle);
@@ -332,22 +388,7 @@ static bool handle_view_created(wlc_handle handle) {
                 }
         }
 
-        const struct wlc_geometry *anchor = wlc_view_positioner_get_anchor_rect(handle);
-        if (anchor) {
-                struct wlc_geometry geo = *wlc_view_get_geometry(handle);
-                struct wlc_size sr = *wlc_view_positioner_get_size(handle);
-                if (sr.w <= 0 || sr.h <= 0)
-                        sr = geo.size;
-                geo.origin = anchor->origin;
-                geo.size = sr;
-                wlc_handle parent = wlc_view_get_parent(handle);
-                if (parent) {
-                        const struct wlc_geometry *pg = wlc_view_get_geometry(parent);
-                        geo.origin.x += pg->origin.x;
-                        geo.origin.y += pg->origin.y;
-                }
-                wlc_view_set_geometry(handle, 0, &geo);
-        }
+        positioner_place_window(handle);
 
         sway_log(L_DEBUG, "handle:%" PRIuPTR " type:%x state:%x parent:%" PRIuPTR " "
                         "mask:%d (x:%d y:%d w:%d h:%d) title:%s "