Accept x and y kwargs into Group for initial position.

shared-bindings/displayio/Group.c

@@ -41,19 +41,23 @@
 //|
 //| Manage a group of sprites and groups and how they are inter-related.
 //|
-//| .. class:: Group(*, max_size=4, scale=1)
+//| .. class:: Group(*, max_size=4, scale=1, x=0, y=0)
 //|
 //|   Create a Group of a given size and scale. Scale is in one dimension. For example, scale=2
 //|   leads to a layer's pixel being 2x2 pixels when in the group.
 //|
 //|   :param int max_size: The maximum group size.
 //|   :param int scale: Scale of layer pixels in one dimension.
+//|   :param int x: Initial x position within the parent.
+//|   :param int y: Initial y position within the parent.
 //|
 STATIC mp_obj_t displayio_group_make_new(const mp_obj_type_t *type, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
-    enum { ARG_max_size, ARG_scale };
+    enum { ARG_max_size, ARG_scale, ARG_x, ARG_y };
     static const mp_arg_t allowed_args[] = {
         { MP_QSTR_max_size, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 4} },
         { MP_QSTR_scale, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 1} },
+        { MP_QSTR_x, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
+        { MP_QSTR_y, MP_ARG_INT | MP_ARG_KW_ONLY, {.u_int = 0} },
     };
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
@@ -70,7 +74,7 @@ STATIC mp_obj_t displayio_group_make_new(const mp_obj_type_t *type, size_t n_arg
 
     displayio_group_t *self = m_new_obj(displayio_group_t);
     self->base.type = &displayio_group_type;
-    common_hal_displayio_group_construct(self, max_size, scale);
+    common_hal_displayio_group_construct(self, max_size, scale, args[ARG_x].u_int, args[ARG_y].u_int);
 
     return MP_OBJ_FROM_PTR(self);
 }

shared-bindings/displayio/Group.h

@@ -32,7 +32,7 @@
 extern const mp_obj_type_t displayio_group_type;
 
 
-void common_hal_displayio_group_construct(displayio_group_t* self, uint32_t max_size, uint32_t scale);
+void common_hal_displayio_group_construct(displayio_group_t* self, uint32_t max_size, uint32_t scale, mp_int_t x, mp_int_t y);
 uint32_t common_hal_displayio_group_get_scale(displayio_group_t* self);
 void common_hal_displayio_group_set_scale(displayio_group_t* self, uint32_t scale);
 mp_int_t common_hal_displayio_group_get_x(displayio_group_t* self);

shared-module/displayio/Group.c

@@ -29,9 +29,9 @@
 #include "py/runtime.h"
 #include "shared-bindings/displayio/TileGrid.h"
 
-void common_hal_displayio_group_construct(displayio_group_t* self, uint32_t max_size, uint32_t scale) {
+void common_hal_displayio_group_construct(displayio_group_t* self, uint32_t max_size, uint32_t scale, mp_int_t x, mp_int_t y) {
     displayio_group_child_t* children = m_new(displayio_group_child_t, max_size);
-    displayio_group_construct(self, children, max_size, scale);
+    displayio_group_construct(self, children, max_size, scale, x, y);
 }
 
 uint32_t common_hal_displayio_group_get_scale(displayio_group_t* self) {
@@ -116,9 +116,9 @@ void common_hal_displayio_group_set(displayio_group_t* self, size_t index, mp_ob
     self->needs_refresh = true;
 }
 
-void displayio_group_construct(displayio_group_t* self, displayio_group_child_t* child_array, uint32_t max_size, uint32_t scale) {
+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) {
-    self->x = 0;
+    self->x = x;
-    self->y = 0;
+    self->y = y;
     self->children = child_array;
     self->max_size = max_size;
     self->needs_refresh = false;

shared-module/displayio/Group.h

@@ -48,7 +48,7 @@ typedef struct {
     bool needs_refresh;
 } displayio_group_t;
 
-void displayio_group_construct(displayio_group_t* self, displayio_group_child_t* child_array, uint32_t max_size, uint32_t scale);
+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);
 bool displayio_group_get_pixel(displayio_group_t *group, int16_t x, int16_t y, uint16_t *pixel);
 bool displayio_group_needs_refresh(displayio_group_t *self);
 void displayio_group_finish_refresh(displayio_group_t *self);