freezer/lib/ui/cached_image.dart

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import 'package:flutter/cupertino.dart';
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import 'package:flutter/material.dart';
import 'package:palette_generator/palette_generator.dart';
import 'package:cached_network_image/cached_network_image.dart';
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ImagesDatabase imagesDatabase = ImagesDatabase();
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class ImagesDatabase {
/*
!!! Using the wrappers so i don't have to rewrite most of the code, because of migration to cached network image
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*/
void saveImage(String url) {
CachedNetworkImageProvider(url);
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}
Future<PaletteGenerator> getPaletteGenerator(String url) {
return PaletteGenerator.fromImageProvider(CachedNetworkImageProvider(url));
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}
Future<Color> getPrimaryColor(String url) async {
PaletteGenerator paletteGenerator = await getPaletteGenerator(url);
return paletteGenerator.colors.first;
}
Future<bool> isDark(String url) async {
PaletteGenerator paletteGenerator = await getPaletteGenerator(url);
return paletteGenerator.colors.first.computeLuminance() > 0.5 ? false : true;
}
}
class CachedImage extends StatefulWidget {
final String url;
final double width;
final double height;
final bool circular;
final bool fullThumb;
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const CachedImage({Key key, this.url, this.height, this.width, this.circular = false, this.fullThumb = false}): super(key: key);
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@override
_CachedImageState createState() => _CachedImageState();
}
class _CachedImageState extends State<CachedImage> {
@override
Widget build(BuildContext context) {
if (widget.circular) return ClipOval(
child: CachedImage(url: widget.url, height: widget.height, width: widget.width, circular: false)
);
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if (!widget.url.startsWith('http'))
return Image.asset(
widget.url,
width: widget.width,
height: widget.height,
);
return CachedNetworkImage(
imageUrl: widget.url,
width: widget.width,
height: widget.height,
placeholder: (context, url) {
if (widget.fullThumb) return Image.asset('assets/cover.jpg', width: widget.width, height: widget.height,);
return Image.asset('assets/cover_thumb.jpg', width: widget.width, height: widget.height);
},
errorWidget: (context, url, error) => Image.asset('assets/cover_thumb.jpg', width: widget.width, height: widget.height),
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);
}
}