image_resizer 1.0.2 
image_resizer: ^1.0.2 copied to clipboard
rodydavis.comA crossplatform general image resizer based on flutter_launcher_icons
import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:image/image.dart' as image;
import 'package:image_resizer/image_resizer.dart';
import 'package:universal_html/html.dart' as html;
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Flutter Icon Resizer',
theme: ThemeData.light().copyWith(
primaryColor: Colors.blue,
accentColor: Colors.red,
),
darkTheme: ThemeData.dark(),
home: HomeScreen(),
);
}
}
class HomeScreen extends StatefulWidget {
@override
_HomeScreenState createState() => _HomeScreenState();
}
class _HomeScreenState extends State<HomeScreen> {
Map<String, List<FileData>> _files;
List<int> _imageData;
bool _loading = false;
@override
void initState() {
rootBundle.load("web/icons/Icon-512.png").then((bytes) async {
_imageData = bytes.buffer.asUint8List();
_refresh();
});
super.initState();
}
bool _isEditing = false;
bool _exportIos = true;
bool _exportWeb = true;
bool _exportMacos = true;
bool _exportAndroid = true;
String _iosPath = "ios/Runner/Assets.xcassets/AppIcon.appiconset";
String _webPath = "web/icons";
String _macOSPath = "macos/Runner/Assets.xcassets/AppIcon.appiconset";
String _androidPath = "android/app/src/main/res";
List<IosIcon> _iosIcons = [
IosIcon(size: 20, scale: 1),
IosIcon(size: 20, scale: 2),
IosIcon(size: 20, scale: 3),
IosIcon(size: 29, scale: 1),
IosIcon(size: 29, scale: 2),
IosIcon(size: 29, scale: 3),
IosIcon(size: 40, scale: 1),
IosIcon(size: 40, scale: 2),
IosIcon(size: 40, scale: 3),
IosIcon(size: 60, scale: 2),
IosIcon(size: 60, scale: 3),
IosIcon(size: 76, scale: 1),
IosIcon(size: 76, scale: 2),
IosIcon(size: 83, scale: 2, point5: true),
IosIcon(size: 1024, scale: 1),
];
List<WebIcon> _webIcons = [
WebIcon(size: 192),
WebIcon(size: 512),
];
List<MacOSIcon> _macIcons = [
MacOSIcon(size: 16, scale: 1, name: '16'),
MacOSIcon(size: 16, scale: 2, name: '32'),
MacOSIcon(size: 32, scale: 1, name: '32'),
MacOSIcon(size: 32, scale: 2, name: '64'),
MacOSIcon(size: 128, scale: 1, name: '128'),
MacOSIcon(size: 128, scale: 2, name: '256'),
MacOSIcon(size: 256, scale: 1, name: '256'),
MacOSIcon(size: 256, scale: 2, name: '512'),
MacOSIcon(size: 512, scale: 1, name: '512'),
MacOSIcon(size: 512, scale: 2, name: '1024'),
];
List<AndroidIcon> _androidIcons = [
AndroidIcon(size: 72, folderSuffix: "hdpi"),
AndroidIcon(size: 48, folderSuffix: "mdpi"),
AndroidIcon(size: 96, folderSuffix: "xhdpi"),
AndroidIcon(size: 144, folderSuffix: "xxhdpi"),
AndroidIcon(size: 192, folderSuffix: "xxxhdpi"),
];
WebFavicon _webFavicon = WebFavicon();
Future _refresh() async {
_files = {};
_setLoading(true);
await _generateIcons(
'iOS Icons',
IosIconsFolder(
icons: _iosIcons,
path: _iosPath,
),
);
await _generateIcons(
'Web Icons',
WebIconsFolder(
icons: _webIcons,
favicion: _webFavicon,
path: _webPath,
),
);
await _generateIcons(
'MacOS Icons',
MacOSIconsFolder(
icons: _macIcons,
path: _macOSPath,
),
);
await _generateIcons(
'Android Icons',
AndroidIconsFolder(
icons: _androidIcons,
path: _androidPath,
),
);
_setLoading(false);
}
void _setLoading(bool value) {
if (mounted)
setState(() {
_loading = value;
});
}
Future _generateIcons(String key, ImageFolder folder) async {
final _image = image.decodePng(_imageData);
final _gen = IconGenerator();
final _archive = await _gen.generateIcons(
_image,
folder,
writeToDiskIO: !kIsWeb,
);
if (mounted)
setState(() {
_files[key] = _archive;
});
}
Future _archive() async {
final _gen = IconGenerator();
List<FileData> _images = [];
for (var key in _files.keys) {
final _folder = _files[key];
_images.addAll(_folder.toList());
}
print("Images: ${_images.length}");
final _data = _gen.generateArchive(_images);
await saveFile('images.zip', binaryData: _data);
}
Future<bool> saveFile(
String fileName, {
String initialDirectoryDesktop,
List<int> binaryData,
bool silentErrors = false,
}) async {
if (kIsWeb) {
Uri dataUrl;
try {
if (binaryData != null) {
dataUrl = Uri.dataFromBytes(binaryData);
}
} catch (e) {
if (!silentErrors) {
throw Exception("Error Creating File Data: $e");
}
return false;
}
final _element = html.AnchorElement()
..href = dataUrl.toString()
..setAttribute("download", fileName);
_element.click();
return true;
}
final _file = File(fileName)..createSync();
_file.writeAsBytesSync(binaryData);
return true;
}
Future _upload() async {
_setLoading(true);
if (kIsWeb) {
final _upload = html.FileUploadInputElement();
_upload.accept = 'image/*';
_upload.click();
final _file = await _upload.onChange.first;
if (_file != null) {
List<html.File> files = (_file.target as dynamic).files;
final f = files.first;
final reader = new html.FileReader();
reader.readAsArrayBuffer(f);
await reader.onLoadEnd.first;
_imageData = reader.result as List<int>;
_refresh();
}
}
_setLoading(false);
return;
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Image Resizer'),
actions: <Widget>[
if (kIsWeb) ...[
IconButton(
icon: Icon(Icons.file_upload),
onPressed: _loading ? null : _upload,
),
IconButton(
icon: Icon(Icons.archive),
onPressed: _archive,
),
],
IconButton(
icon: Icon(Icons.edit),
onPressed: () {
if (mounted)
setState(() {
_isEditing = !_isEditing;
});
_refresh();
},
),
],
),
body: _isEditing ? _buildEditingView() : _buildFilePreview(),
floatingActionButton: FloatingActionButton(
onPressed: _refresh,
tooltip: 'Generate Icons',
child: Icon(Icons.refresh),
),
);
}
Widget _buildEditingView() {
return Container(
child: ListView(
children: <Widget>[
_buildSection(
'iOS',
_exportIos,
(val) {
if (mounted) setState(() => _exportIos = val);
},
_iosPath,
_iosIcons,
),
_buildSection(
'MacOS',
_exportMacos,
(val) {
if (mounted) setState(() => _exportMacos = val);
},
_macOSPath,
_macIcons,
),
_buildSection(
'Android',
_exportAndroid,
(val) {
if (mounted) setState(() => _exportAndroid = val);
},
_androidPath,
_androidIcons,
),
_buildSection(
'Web',
_exportWeb,
(val) {
if (mounted) setState(() => _exportWeb = val);
},
_webPath,
_webIcons,
),
],
),
);
}
Widget _buildSection(String name, bool toggle, ValueChanged<bool> onChanged,
String path, List<IconTemplate> icons) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Card(
child: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: [
SwitchListTile(
title: Text(
'Export $name Icons',
style: Theme.of(context).textTheme.headline4,
),
value: toggle,
onChanged: onChanged,
),
if (toggle) ...[
ListTile(
title: TextFormField(
decoration: InputDecoration(
labelText: 'Path',
),
initialValue: path,
onChanged: (val) {
if (mounted)
setState(() {
path = val;
});
},
),
),
DataTable(
columns: [
DataColumn(label: Text('Size')),
if (icons is List<IosIcon>) ...[
DataColumn(label: Text('Prefix')),
DataColumn(label: Text('Ext')),
DataColumn(label: Text('Scale')),
DataColumn(label: Text('Point5')),
],
if (icons is List<MacOSIcon>) ...[
DataColumn(label: Text('Prefix')),
DataColumn(label: Text('Ext')),
DataColumn(label: Text('Scale')),
],
if (icons is List<WebIcon>) ...[
DataColumn(label: Text('Prefix')),
DataColumn(label: Text('Ext')),
],
if (icons is List<AndroidIcon>) ...[
DataColumn(label: Text('Name')),
DataColumn(label: Text('Folder')),
DataColumn(label: Text('Suffix')),
DataColumn(label: Text('Ext')),
],
DataColumn(label: Text('Delete')),
],
rows: [
for (var i = 0; i < icons.length; i++) ...[
DataRow(cells: [
DataCell(
SizedBox(
width: 50,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Size',
),
initialValue: icons[i].size.toString(),
onChanged: (val) {
try {
if (mounted)
setState(() {
final _icon = icons[i];
final _value = int.tryParse(val);
if (_icon is IosIcon) {
icons[i] = _icon.copyWith(size: _value);
}
if (_icon is WebIcon) {
icons[i] = _icon.copyWith(size: _value);
}
if (_icon is MacOSIcon) {
icons[i] = _icon.copyWith(size: _value);
}
if (_icon is AndroidIcon) {
icons[i] = _icon.copyWith(size: _value);
}
});
} catch (e) {}
},
),
),
),
if (icons is List<IosIcon>) ...[
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Prefix',
),
initialValue: icons[i].prefix,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(prefix: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Ext',
),
initialValue: icons[i].ext,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(ext: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Scale',
),
initialValue: icons[i].scale.toString(),
onChanged: (val) {
try {
if (mounted)
setState(() {
final _value = int.tryParse(val);
icons[i] =
icons[i].copyWith(scale: _value);
});
} catch (e) {}
},
),
),
),
DataCell(
Switch(
value: icons[i].point5,
onChanged: (val) {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(point5: val);
});
},
),
),
],
if (icons is List<MacOSIcon>) ...[
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Prefix',
),
initialValue: icons[i].prefix,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(prefix: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Ext',
),
initialValue: icons[i].ext,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(ext: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Scale',
),
initialValue: icons[i].scale.toString(),
onChanged: (val) {
try {
if (mounted)
setState(() {
final _value = int.tryParse(val);
icons[i] =
icons[i].copyWith(scale: _value);
});
} catch (e) {}
},
),
),
),
],
if (icons is List<WebIcon>) ...[
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Prefix',
),
initialValue: icons[i].prefix,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(prefix: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Ext',
),
initialValue: icons[i].ext,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(ext: val);
});
} catch (e) {}
},
),
),
),
],
if (icons is List<AndroidIcon>) ...[
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Name',
),
initialValue: icons[i].name,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(name: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Folder',
),
initialValue: icons[i].folder,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(folder: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Suffix',
),
initialValue: icons[i].folderSuffix,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] =
icons[i].copyWith(folderSuffix: val);
});
} catch (e) {}
},
),
),
),
DataCell(
SizedBox(
width: 100,
child: TextFormField(
decoration: InputDecoration.collapsed(
hintText: 'Ext',
),
initialValue: icons[i].ext,
onChanged: (val) {
try {
if (mounted)
setState(() {
icons[i] = icons[i].copyWith(ext: val);
});
} catch (e) {}
},
),
),
),
],
DataCell(
IconButton(
icon: Icon(Icons.delete),
onPressed: () {
if (mounted)
setState(() {
icons.removeAt(i);
});
},
),
),
]),
],
],
),
FlatButton(
child: Text('Add Icon'),
onPressed: () {
if (mounted)
setState(() {
if (icons is List<IosIcon>) {
icons.add(
IosIcon(
size: 1024,
scale: 1,
),
);
}
if (icons is List<WebIcon>) {
icons.add(
WebIcon(
size: 192,
),
);
}
if (icons is List<MacOSIcon>) {
icons.add(
MacOSIcon(
size: 512,
scale: 2,
name: '1024',
),
);
}
if (icons is List<AndroidIcon>) {
icons.add(
AndroidIcon(
size: 192,
folderSuffix: "xxxhdpi",
),
);
}
});
},
),
],
],
),
),
);
}
Widget _buildFilePreview() {
if (_files == null) {
return Center(child: CircularProgressIndicator());
}
return ListView.separated(
separatorBuilder: (context, index) => Container(
height: 1.0,
color: Colors.grey,
),
itemCount: _files.keys.length,
itemBuilder: (context, index) {
final _key = _files.keys.toList()[index];
final _folder = _files[_key];
return Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
children: <Widget>[
Text(
_key,
style: Theme.of(context).textTheme.headline4,
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Wrap(
children: _folder.map((file) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
height: 200.0,
width: 200.0,
child: Card(
child: Image.memory(
Uint8List.fromList(file.data),
),
),
),
Text(file.name),
],
),
);
}).toList(),
),
),
],
),
);
},
);
}
}Metadata
3
likes
30
pub points
24%
popularity
Publisher
Metadata
A crossplatform general image resizer based on flutter_launcher_icons
Repository (GitHub)
View/report issues
License
unknown (LICENSE)
Dependencies
archive, args, image, meta, path, yaml
