EPaperDisplay: add rotation property

untested, because I don't want to mess my magtag demo up :) but it builds

Author: jepler

shared-bindings/displayio/EPaperDisplay.c

@@ -294,6 +294,29 @@ const mp_obj_property_t displayio_epaperdisplay_height_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
+//|     rotation: int
+//|     """The rotation of the display as an int in degrees."""
+//|
+STATIC mp_obj_t displayio_epaperdisplay_obj_get_rotation(mp_obj_t self_in) {
+    displayio_epaperdisplay_obj_t *self = native_display(self_in);
+    return MP_OBJ_NEW_SMALL_INT(common_hal_displayio_epaperdisplay_get_rotation(self));
+}
+MP_DEFINE_CONST_FUN_OBJ_1(displayio_epaperdisplay_get_rotation_obj, displayio_epaperdisplay_obj_get_rotation);
+STATIC mp_obj_t displayio_epaperdisplay_obj_set_rotation(mp_obj_t self_in, mp_obj_t value) {
+    displayio_epaperdisplay_obj_t *self = native_display(self_in);
+    common_hal_displayio_epaperdisplay_set_rotation(self, mp_obj_get_int(value));
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_2(displayio_epaperdisplay_set_rotation_obj, displayio_epaperdisplay_obj_set_rotation);
+
+
+const mp_obj_property_t displayio_epaperdisplay_rotation_obj = {
+    .base.type = &mp_type_property,
+    .proxy = {(mp_obj_t)&displayio_epaperdisplay_get_rotation_obj,
+              (mp_obj_t)&displayio_epaperdisplay_set_rotation_obj,
+              (mp_obj_t)&mp_const_none_obj},
+};
+
 //|     bus: _DisplayBus
 //|     """The bus being used by the display"""
 //|
@@ -317,6 +340,7 @@ STATIC const mp_rom_map_elem_t displayio_epaperdisplay_locals_dict_table[] = {
 
     { MP_ROM_QSTR(MP_QSTR_width), MP_ROM_PTR(&displayio_epaperdisplay_width_obj) },
     { MP_ROM_QSTR(MP_QSTR_height), MP_ROM_PTR(&displayio_epaperdisplay_height_obj) },
+    { MP_ROM_QSTR(MP_QSTR_rotation), MP_ROM_PTR(&displayio_epaperdisplay_rotation_obj) },
     { MP_ROM_QSTR(MP_QSTR_bus), MP_ROM_PTR(&displayio_epaperdisplay_bus_obj) },
     { MP_ROM_QSTR(MP_QSTR_busy), MP_ROM_PTR(&displayio_epaperdisplay_busy_obj) },
     { MP_ROM_QSTR(MP_QSTR_time_to_refresh), MP_ROM_PTR(&displayio_epaperdisplay_time_to_refresh_obj) },

shared-bindings/displayio/EPaperDisplay.h

@@ -56,6 +56,8 @@ bool common_hal_displayio_epaperdisplay_get_busy(displayio_epaperdisplay_obj_t*
 
 uint16_t common_hal_displayio_epaperdisplay_get_width(displayio_epaperdisplay_obj_t* self);
 uint16_t common_hal_displayio_epaperdisplay_get_height(displayio_epaperdisplay_obj_t* self);
+uint16_t common_hal_displayio_epaperdisplay_get_rotation(displayio_epaperdisplay_obj_t* self);
+void common_hal_displayio_epaperdisplay_set_rotation(displayio_epaperdisplay_obj_t* self, int rotation);
 
 mp_obj_t common_hal_displayio_epaperdisplay_get_bus(displayio_epaperdisplay_obj_t* self);
 

shared-module/displayio/EPaperDisplay.c

@@ -198,6 +198,29 @@ mp_obj_t common_hal_displayio_epaperdisplay_get_bus(displayio_epaperdisplay_obj_
     return self->core.bus;
 }
 
+void common_hal_displayio_epaperdisplay_set_rotation(displayio_epaperdisplay_obj_t* self, int rotation){
+    bool transposed = (self->core.rotation == 90 || self->core.rotation == 270);
+    bool will_transposed = (rotation == 90 || rotation == 270);
+    if(transposed != will_transposed) {
+        int tmp = self->core.width;
+        self->core.width = self->core.height;
+        self->core.height = tmp;
+    }
+    displayio_display_core_set_rotation(&self->core, rotation);
+    if (self == &displays[0].epaper_display) {
+        supervisor_stop_terminal();
+        supervisor_start_terminal(self->core.width, self->core.height);
+    }
+    if (self->core.current_group != NULL) {
+        displayio_group_update_transform(self->core.current_group, &self->core.transform);
+    }
+}
+
+uint16_t common_hal_displayio_epaperdisplay_get_rotation(displayio_epaperdisplay_obj_t* self){
+    return self->core.rotation;
+}
+
+
 bool displayio_epaperdisplay_refresh_area(displayio_epaperdisplay_obj_t* self, const displayio_area_t* area) {
     uint16_t buffer_size = 128; // In uint32_ts