Handle border options for gaps

Fixes `hide_edge_borders smart` when gaps are in use.
Implements `hide_edge_borders smart_no_gaps` and `smart_borders
on|no_gaps|off`.

Since `smart_borders on` is equivalent to `hide_edge_borders smart`
and `smart_borders no_gaps` is equivalent to `hide_edge_borders
smart_no_gaps`, I opted to just save the last value set for
`hide_edge_borders` and restore that on `smart_borders off`. This
simplifies the conditions for setting the border.

1 files changed, 3 insertions, 1 deletions

diff --git a/include/sway/config.h b/include/sway/config.h
index eab48aed..98a18b76 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -253,7 +253,8 @@ enum edge_border_types {
         E_VERTICAL,     /**< hide vertical edge borders */
         E_HORIZONTAL,   /**< hide horizontal edge borders */
         E_BOTH,         /**< hide vertical and horizontal edge borders */
-        E_SMART         /**< hide both if precisely one window is present in workspace */
+        E_SMART, /**< hide both if precisely one window is present in workspace */
+        E_SMART_NO_GAPS, /**< hide both if one window and gaps to edge is zero */
 };
 
 enum command_context {
@@ -383,6 +384,7 @@ struct sway_config {
         int border_thickness;
         int floating_border_thickness;
         enum edge_border_types hide_edge_borders;
+        enum edge_border_types saved_edge_borders;
 
         // border colors
         struct {