Moving Shrine into a material_studies subdirectory (#128)

material_studies/shrine/lib/supplemental/product_card.dart

@@ -0,0 +1,93 @@
+// Copyright 2018-present the Flutter authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import 'package:flutter/material.dart';
+import 'package:intl/intl.dart';
+import 'package:scoped_model/scoped_model.dart';
+
+import '../model/app_state_model.dart';
+import '../model/product.dart';
+
+class ProductCard extends StatelessWidget {
+  ProductCard({this.imageAspectRatio = 33 / 49, this.product})
+      : assert(imageAspectRatio == null || imageAspectRatio > 0);
+
+  final double imageAspectRatio;
+  final Product product;
+
+  static final kTextBoxHeight = 65.0;
+
+  @override
+  Widget build(BuildContext context) {
+    final NumberFormat formatter = NumberFormat.simpleCurrency(
+        decimalDigits: 0, locale: Localizations.localeOf(context).toString());
+    final ThemeData theme = Theme.of(context);
+
+    final imageWidget = Image.asset(
+      product.assetName,
+      package: product.assetPackage,
+      fit: BoxFit.cover,
+    );
+
+    return ScopedModelDescendant<AppStateModel>(
+      builder: (context, child, model) => GestureDetector(
+        onTap: () {
+          model.addProductToCart(product.id);
+          // TODO: Add Snackbar
+        },
+        child: child,
+      ),
+      child: Stack(
+        children: <Widget>[
+          Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            crossAxisAlignment: CrossAxisAlignment.center,
+            children: <Widget>[
+              AspectRatio(
+                aspectRatio: imageAspectRatio,
+                child: imageWidget,
+              ),
+              SizedBox(
+                height: kTextBoxHeight * MediaQuery.of(context).textScaleFactor,
+                width: 121.0,
+                child: Column(
+                  mainAxisAlignment: MainAxisAlignment.end,
+                  crossAxisAlignment: CrossAxisAlignment.center,
+                  children: <Widget>[
+                    Text(
+                      product == null ? '' : product.name,
+                      style: theme.textTheme.button,
+                      softWrap: false,
+                      overflow: TextOverflow.ellipsis,
+                      maxLines: 1,
+                    ),
+                    SizedBox(height: 4.0),
+                    Text(
+                      product == null ? '' : formatter.format(product.price),
+                      style: theme.textTheme.caption,
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          ),
+          Padding(
+            padding: const EdgeInsets.all(16.0),
+            child: Icon(Icons.add_shopping_cart),
+          ),
+        ],
+      ),
+    );
+  }
+}