Implement floating_modifier and mouse operations for floating views

This implements the following:

* `floating_modifier` configuration directive
* Drag a floating window by its title bar
* Hold mod + drag a floating window from anywhere
* Resize a floating view by dragging the border
* Resize a floating view by holding mod and right clicking anywhere on
the view
* Resize a floating view and keep aspect ratio by holding shift while
resizing using either method
* Mouse cursor turns into resize when hovering floating border or corner

1 files changed, 1 insertions, 0 deletions

diff --git a/sway/commands.c b/sway/commands.c
index f1f03574..f40f0e9d 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -103,6 +103,7 @@ static struct cmd_handler handlers[] = {
         { "exec_always", cmd_exec_always },
         { "floating_maximum_size", cmd_floating_maximum_size },
         { "floating_minimum_size", cmd_floating_minimum_size },
+        { "floating_modifier", cmd_floating_modifier },
         { "focus", cmd_focus },
         { "focus_follows_mouse", cmd_focus_follows_mouse },
         { "focus_wrapping", cmd_focus_wrapping },