Redraw only when input changed.

3 files changed, 9 insertions, 4 deletions

diff --git a/lib/renderers/wayland/registry.c b/lib/renderers/wayland/registry.c
index 9521374..d83c797 100644
--- a/lib/renderers/wayland/registry.c
+++ b/lib/renderers/wayland/registry.c
@@ -369,6 +369,7 @@ bm_wl_registry_register(struct wayland *wayland)
         return false;
 
     set_repeat_info(&wayland->input, 40, 400);
+    wayland->input.last_code = 0xDEADBEEF;
     return true;
 }
 
diff --git a/lib/renderers/wayland/wayland.c b/lib/renderers/wayland/wayland.c
index 2cdedec..3852a6d 100644
--- a/lib/renderers/wayland/wayland.c
+++ b/lib/renderers/wayland/wayland.c
@@ -38,10 +38,13 @@ render(const struct bm_menu *menu)
         }
     }
 
-    uint32_t count;
-    bm_menu_get_filtered_items(menu, &count);
-    uint32_t lines = (count < menu->lines ? count : menu->lines) + 1;
-    bm_wl_window_render(&wayland->window, menu, lines);
+    if (wayland->input.code != wayland->input.last_code) {
+        uint32_t count;
+        bm_menu_get_filtered_items(menu, &count);
+        uint32_t lines = (count < menu->lines ? count : menu->lines) + 1;
+        bm_wl_window_render(&wayland->window, menu, lines);
+        wayland->input.last_code = wayland->input.code;
+    }
 }
 
 static enum bm_key
diff --git a/lib/renderers/wayland/wayland.h b/lib/renderers/wayland/wayland.h
index 50455b5..886a0fd 100644
--- a/lib/renderers/wayland/wayland.h
+++ b/lib/renderers/wayland/wayland.h
@@ -51,6 +51,7 @@ struct input {
 
     xkb_keysym_t sym;
     uint32_t code;
+    uint32_t last_code;
     uint32_t modifiers;
 
     xkb_keysym_t repeat_sym;