Implement tiling_drag_threshold

Implements `tiling_drag_threshold <threshold>` to prevent accidental
dragging of tiling containers. If a container (and all of its
descendants) are unfocused and the tile bar is pressed, a threshold
will be used before actually starting the drag. Once the threshold has
been exceeded, the cursor will change to the grab icon and the operation
will switch from `OP_MOVE_TILING_THRESHOLD` to `OP_MOVE_TILING`.

1 files changed, 2 insertions, 0 deletions

diff --git a/include/sway/config.h b/include/sway/config.h
index f604b054..ebf16e6a 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -426,7 +426,9 @@ struct sway_config {
         bool auto_back_and_forth;
         bool show_marks;
         enum alignment title_align;
+
         bool tiling_drag;
+        int tiling_drag_threshold;
 
         bool smart_gaps;
         int gaps_inner;