New feature: adjust gaps with floating_mod+scroll

I made this configurable but I didn't make the command for it. That's
left as an exercise to an eager contributor.

    mod_scroll_behavior [gaps inner|gaps outer]

Would merge implementions of more behaviors for mod+scroll, if anyone
has some neato ideas.

1 files changed, 8 insertions, 0 deletions

diff --git a/include/config.h b/include/config.h
index fb84423c..0ef8c5bf 100644
--- a/include/config.h
+++ b/include/config.h
@@ -163,6 +163,13 @@ enum edge_border_types {
         E_BOTH          /**< hide vertical and horizontal edge borders */
 };
 
+enum floating_scroll_behavior {
+    FSB_GAPS_OUTER,     /**< Adjust outer gaps */
+    FSB_GAPS_INNER      /**< Adjust inner gaps */
+    // Note: in the future I expect to see more things you can do with the scroll
+    // wheel than maniuplating gaps
+};
+
 /**
  * The configuration struct. The result of loading a config file.
  */
@@ -181,6 +188,7 @@ struct sway_config {
         uint32_t floating_mod;
         uint32_t dragging_key;
         uint32_t resizing_key;
+    enum floating_scroll_behavior floating_scroll; // TODO: command to set this
         enum swayc_layouts default_orientation;
         enum swayc_layouts default_layout;
         char *font;