first commit

lib/thermal priting invoices/network_image.dart

@@ -0,0 +1,28 @@
+import 'package:http/http.dart' as http;
+import 'package:image/image.dart' as img;
+
+Future<img.Image?> getNetworkImage(
+  String? url, {
+  int width = 250,
+  int height = 250,
+}) async {
+  if (url == null) return null;
+
+  try {
+    final response = await http.get(Uri.parse(url));
+    if (response.statusCode != 200) return null;
+
+    final _image = img.decodeImage(response.bodyBytes);
+    if (_image == null) return null;
+    return _image;
+    return img.copyResize(
+      _image,
+      width: width,
+      height: height,
+      interpolation: img.Interpolation.average,
+    );
+    // final img.Image grayscaleImage = img.grayscale(resizedImage);
+  } catch (e) {
+    return null;
+  }
+}