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samples/shrine/lib/supplemental/product_columns.dart

88 lines
2.4 KiB

// 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 '../model/product.dart';
import 'product_card.dart';
class TwoProductCardColumn extends StatelessWidget {
TwoProductCardColumn({
this.bottom,
this.top,
}) : assert(bottom != null);
final Product bottom, top;
@override
Widget build(BuildContext context) {
return LayoutBuilder(
builder: (BuildContext context, BoxConstraints constraints) {
const spacerHeight = 44.0;
double heightOfCards = (constraints.biggest.height - spacerHeight) / 2.0;
double heightOfImages = heightOfCards - ProductCard.kTextBoxHeight;
double imageAspectRatio =
(heightOfImages >= 0.0 && constraints.biggest.width > heightOfImages)
? constraints.biggest.width / heightOfImages
: 33 / 49;
return ListView(
children: <Widget>[
Padding(
padding: EdgeInsetsDirectional.only(start: 28.0),
child: top != null
? ProductCard(
imageAspectRatio: imageAspectRatio,
product: top,
)
: SizedBox(
height: heightOfCards,
),
),
SizedBox(height: spacerHeight),
Padding(
padding: EdgeInsetsDirectional.only(end: 28.0),
child: ProductCard(
imageAspectRatio: imageAspectRatio,
product: bottom,
),
),
],
);
});
}
}
class OneProductCardColumn extends StatelessWidget {
OneProductCardColumn({this.product});
final Product product;
@override
Widget build(BuildContext context) {
return ListView(
reverse: true,
children: <Widget>[
SizedBox(
height: 40.0,
),
ProductCard(
product: product,
),
],
);
}
}