make thumbnail bindings configureable via config.h (#167)

this allows for configuring thumbnail mode mouse bindings similar to
image mode bindings.

however we can't put the thumbnails bindings into the existing buttons[]
array due to fallthrough. For example M3 would switch mode and then end
up selecting an image.

which is why thumbnail bindings have been put into it's own array
`buttons_tns[]` and `buttons[]` has been renamed to `buttons_img[]` for
consistency.

Closes: https://github.com/nsxiv/nsxiv/issues/131

1 files changed, 6 insertions, 0 deletions

diff --git a/commands.h b/commands.h
index 8935f22..70af13a 100644
--- a/commands.h
+++ b/commands.h
@@ -39,6 +39,9 @@ bool ci_toggle_antialias(arg_t);
 /* thumbnails mode */
 bool ct_move_sel(arg_t);
 bool ct_reload_all(arg_t);
+bool ct_scroll(arg_t);
+bool ct_drag_mark_image(arg_t);
+bool ct_select(arg_t);
 
 /* global */
 #define g_change_gamma { cg_change_gamma, MODE_ALL }
@@ -79,5 +82,8 @@ bool ct_reload_all(arg_t);
 /* thumbnails mode */
 #define t_move_sel { ct_move_sel, MODE_THUMB }
 #define t_reload_all { ct_reload_all, MODE_THUMB }
+#define t_scroll { ct_scroll, MODE_THUMB }
+#define t_drag_mark_image { ct_drag_mark_image, MODE_THUMB }
+#define t_select { ct_select, MODE_THUMB }
 
 #endif /* COMMANDS_H */