change direction of shift right

caternuson · caternuson · commit 5298119aa2a3 · 2019-04-03T09:21:34.000-07:00
diff --git a/shared-module/displayio/Group.c b/shared-module/displayio/Group.c
@@ -73,8 +73,8 @@ void common_hal_displayio_group_insert(displayio_group_t* self, size_t index, mp
         mp_raise_ValueError(translate("Layer must be a Group or TileGrid subclass."));
     }
     // Shift everything right.
-    for (size_t i = index; i < self->size; i++) {
-        self->children[i + 1] = self->children[i];
+    for (size_t i = self->size; i > index; i--) {
+        self->children[i] = self->children[i - 1];
     }
     self->children[index].native = native_layer;
     self->children[index].original = layer;

Original file line number	Diff line number	Diff line change
`@@ -73,8 +73,8 @@ void common_hal_displayio_group_insert(displayio_group_t* self, size_t index, mp`
`73`	`73`	`mp_raise_ValueError(translate("Layer must be a Group or TileGrid subclass."));`
`74`	`74`	`}`
`75`	`75`	`// Shift everything right.`
`76`		`- for (size_t i = index; i < self->size; i++) {`
`77`		`- self->children[i + 1] = self->children[i];`
	`76`	`+ for (size_t i = self->size; i > index; i--) {`
	`77`	`+ self->children[i] = self->children[i - 1];`
`78`	`78`	`}`
`79`	`79`	`self->children[index].native = native_layer;`
`80`	`80`	`self->children[index].original = layer;`