Bitpack bools in TileGrid and Group

Author: tannewt

shared-module/displayio/Group.h

@@ -42,17 +42,18 @@ typedef struct {
 typedef struct {
     mp_obj_base_t base;
     displayio_group_child_t* children;
+    displayio_buffer_transform_t absolute_transform;
+    displayio_area_t dirty_area; // Catch all for changed area
     int16_t x;
     int16_t y;
     uint16_t scale;
     uint16_t size;
     uint16_t max_size;
-    bool item_removed;
-    bool in_group;
-    bool hidden;
-    bool hidden_by_parent;
-    displayio_buffer_transform_t absolute_transform;
-    displayio_area_t dirty_area; // Catch all for changed area
+    bool item_removed :1;
+    bool in_group :1;
+    bool hidden :1;
+    bool hidden_by_parent :1;
+    uint8_t padding :4;
 } displayio_group_t;
 
 void displayio_group_construct(displayio_group_t* self, displayio_group_child_t* child_array, uint32_t max_size, uint32_t scale, mp_int_t x, mp_int_t y);

shared-module/displayio/TileGrid.h

@@ -55,16 +55,17 @@ typedef struct {
     displayio_area_t dirty_area; // Stored as a relative area until the refresh area is fetched.
     displayio_area_t previous_area; // Stored as an absolute area.
     displayio_area_t current_area; // Stored as an absolute area so it applies across frames.
-    bool partial_change;
-    bool full_change;
-    bool moved;
-    bool inline_tiles;
-    bool in_group;
-    bool flip_x;
-    bool flip_y;
-    bool transpose_xy;
-    bool hidden;
-    bool hidden_by_parent;
+    bool partial_change :1;
+    bool full_change :1;
+    bool moved :1;
+    bool inline_tiles :1;
+    bool in_group :1;
+    bool flip_x :1;
+    bool flip_y :1;
+    bool transpose_xy  :1;
+    bool hidden :1;
+    bool hidden_by_parent :1;
+    uint8_t padding :6;
 } displayio_tilegrid_t;
 
 void displayio_tilegrid_set_hidden_by_parent(displayio_tilegrid_t *self, bool hidden);