snap 1.0.2+1 
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cosmossoftware.coffeeAn extensive snap tool/widget for Flutter that allows very flexible snap management and snapping between your widgets.
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// © Cosmos Software | Ali Yigit Bireroglu /
// All material used in the making of this code, project, program, application, software et cetera (the "Intellectual Property") /
// belongs completely and solely to Ali Yigit Bireroglu. This includes but is not limited to the source code, the multimedia and /
// other asset files. If you were granted this Intellectual Property for personal use, you are obligated to include this copyright /
// text at all times. /
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//@formatter:off
import 'package:flutter/foundation.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:snap/snap.dart';
List<GlobalKey> bounds = List<GlobalKey>();
List<GlobalKey> views = List<GlobalKey>();
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Snap Demo',
theme: ThemeData(primarySwatch: Colors.blue),
home: MyHomePage(title: 'Snap Demo'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
double bottom = -200.0;
@override
void initState() {
super.initState();
for (int i = 0; i < 6; i++) {
bounds.add(GlobalKey());
views.add(GlobalKey());
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text(widget.title)),
body: PageView(
onPageChanged: (int index) {
if (index == 1)
setState(() {
bottom = 0.0;
});
else
setState(() {
bottom = -200.0;
});
},
children: [
Scaffold(
body: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
description("The box will snap to the corners or the center."),
gap(),
Expanded(
child: Align(
key: bounds[0],
alignment: const Alignment(-1.0, -1.0),
child: SnapController(
firstNormalBoxView(),
true,
views[0],
bounds[0],
Offset.zero,
const Offset(1.0, 1.0),
const Offset(0.75, 0.75),
const Offset(0.75, 0.75),
snapTargets: [
const SnapTarget(Pivot.topLeft, Pivot.topLeft),
const SnapTarget(Pivot.topRight, Pivot.topRight),
const SnapTarget(Pivot.bottomLeft, Pivot.bottomLeft),
const SnapTarget(Pivot.bottomRight, Pivot.bottomRight),
const SnapTarget(Pivot.center, Pivot.center),
],
),
),
),
],
),
),
Scaffold(
body: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
description("The box will snap to the closest side regardless of animation."),
gap(),
Expanded(
child: Align(
key: bounds[1],
alignment: const Alignment(-1.0, -1.0),
child: Stack(
children: [
AnimatedPositioned(
left: 0,
bottom: bottom,
duration: Duration(milliseconds: 300),
child: SnapController(
animatedBoxView(),
true,
views[1],
bounds[1],
Offset.zero,
const Offset(1.0, 1.0),
const Offset(0.75, 0.75),
const Offset(0.75, 0.75),
snapTargets: [
const SnapTarget(Pivot.closestAny, Pivot.closestAny),
],
),
),
],
),
),
),
],
),
),
Scaffold(
body: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
description("The box will snap to the closest matching color."),
gap(),
Expanded(
child: Stack(
children: [
Align(
key: bounds[2],
alignment: const Alignment(-1.0, -1.0),
child: SnapController(
dottedBoxView(),
true,
views[2],
bounds[2],
Offset.zero,
const Offset(1.0, 1.0),
const Offset(0.75, 0.75),
const Offset(0.75, 0.75),
snapTargets: [
const SnapTarget(const Offset(0.1, 0.1), const Offset(0.1, 0.1)),
const SnapTarget(const Offset(0.9, 0.1), const Offset(0.85, 0.465)),
const SnapTarget(const Offset(0.1, 0.9), const Offset(0.1, 0.9)),
],
),
),
Align(
alignment: const Alignment(-0.85, -0.85),
child: Container(
width: 10,
height: 10,
color: Colors.orangeAccent,
),
),
Align(
alignment: const Alignment(0.75, -0.1),
child: Container(
width: 10,
height: 10,
color: Colors.black,
),
),
Align(
alignment: const Alignment(-0.85, 0.85),
child: Container(
width: 10,
height: 10,
color: Colors.deepPurpleAccent,
),
),
],
),
),
],
),
),
Scaffold(
body: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
description("The box will snap to the corners or the center while maintaining the initial offset"),
gap(),
Expanded(
child: Align(
key: bounds[3],
alignment: const Alignment(-1.0, -1.0),
child: SnapController(
translatedBoxView(),
true,
views[3],
bounds[3],
Offset(50.0 / MediaQuery.of(context).size.width, 50.0 / MediaQuery.of(context).size.height),
Offset(1.0, 1.0) - Offset(50.0 / MediaQuery.of(context).size.width, 50.0 / MediaQuery.of(context).size.height),
const Offset(0.75, 0.75),
const Offset(0.75, 0.75),
snapTargets: [
SnapTarget(Pivot.topLeft, Offset(50.0 / MediaQuery.of(context).size.width, 50.0 / MediaQuery.of(context).size.height)),
SnapTarget(Pivot.topRight, Offset(1.0 - 50.0 / MediaQuery.of(context).size.width, 50.0 / MediaQuery.of(context).size.height)),
SnapTarget(
Pivot.bottomLeft, Offset(50.0 / MediaQuery.of(context).size.width, 1.0 - 50.0 / MediaQuery.of(context).size.height)),
SnapTarget(Pivot.bottomRight,
Offset(1.0, 1.0) - Offset(50.0 / MediaQuery.of(context).size.width, 50.0 / MediaQuery.of(context).size.height)),
const SnapTarget(Pivot.center, Pivot.center),
],
),
),
),
],
),
),
Scaffold(
body: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
description("The box will snap to the closest side or the center within its container."),
gap(),
Container(
width: 300,
height: 300,
color: Colors.orangeAccent,
child: Align(
key: bounds[4],
alignment: const Alignment(-1.0, -1.0),
child: SnapController(
smallBoxView(),
true,
views[4],
bounds[4],
Offset.zero,
const Offset(1.0, 1.0),
const Offset(0.15, 0.15),
const Offset(0.15, 0.15),
snapTargets: [
const SnapTarget(Pivot.closestAny, Pivot.closestAny),
const SnapTarget(Pivot.center, Pivot.center),
],
),
),
),
],
),
),
Scaffold(
body: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
description("The box will snap to the corners or the center without animation."),
gap(),
Expanded(
child: Align(
key: bounds[5],
alignment: const Alignment(-1.0, -1.0),
child: SnapController(
secondNormalBoxView(),
false,
views[5],
bounds[5],
Offset.zero,
const Offset(1.0, 1.0),
const Offset(0.75, 0.75),
const Offset(0.75, 0.75),
snapTargets: [
const SnapTarget(Pivot.topLeft, Pivot.topLeft),
const SnapTarget(Pivot.topRight, Pivot.topRight),
const SnapTarget(Pivot.bottomLeft, Pivot.bottomLeft),
const SnapTarget(Pivot.bottomRight, Pivot.bottomRight),
const SnapTarget(Pivot.center, Pivot.center),
],
animateSnap: false,
),
),
),
],
),
),
],
),
);
}
}
Widget description(String text) {
return Container(
constraints: const BoxConstraints.expand(height: 75),
color: Colors.green,
child: Center(
child: Padding(
padding: const EdgeInsets.all(10),
child: Text(
text,
style: const TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 15,
),
textAlign: TextAlign.center,
),
),
),
);
}
Widget gap() {
return Container(
constraints: const BoxConstraints.expand(height: 25),
color: Colors.transparent,
child: Center(
child: const Text(
"- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ",
style: const TextStyle(
color: Colors.black,
fontWeight: FontWeight.bold,
fontSize: 10,
),
textAlign: TextAlign.center,
),
),
);
}
Widget firstNormalBoxView() {
return normalBox(
views[0],
"Move & Snap",
Colors.redAccent,
);
}
Widget animatedBoxView() {
return normalBox(
views[1],
"Move & Snap",
Colors.redAccent,
);
}
Widget dottedBoxView() {
return dottedBox(
views[2],
"Move & Snap",
Colors.redAccent,
);
}
Widget translatedBoxView() {
return translatedBox(
views[3],
"Move & Snap",
Colors.redAccent,
);
}
Widget smallBoxView() {
return smallBox(
views[4],
"*",
Colors.redAccent,
);
}
Widget secondNormalBoxView() {
return normalBox(
views[5],
"Move & Snap",
Colors.redAccent,
);
}
Widget thirdNormalBoxView() {
return normalBox(
views[6],
"Move & Snap",
Colors.redAccent,
);
}
Widget normalBox(Key key, String text, Color color) {
return Container(
key: key,
width: 200,
height: 200,
color: Colors.transparent,
child: Padding(
padding: const EdgeInsets.all(5),
child: Container(
constraints: BoxConstraints.expand(),
decoration: BoxDecoration(
color: color,
borderRadius: const BorderRadius.all(const Radius.circular(10.0)),
),
child: Center(
child: Text(
text,
style: const TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 25,
),
),
),
),
),
);
}
Widget translatedBox(Key key, String text, Color color) {
return Transform.translate(
offset: const Offset(50, 50),
child: Container(
key: key,
width: 200,
height: 200,
color: Colors.transparent,
child: Padding(
padding: const EdgeInsets.all(5),
child: Container(
constraints: BoxConstraints.expand(),
decoration: BoxDecoration(
color: color,
borderRadius: const BorderRadius.all(const Radius.circular(10.0)),
),
child: Center(
child: Text(
text,
style: const TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 25,
),
),
),
),
),
),
);
}
Widget smallBox(Key key, String text, Color color) {
return Container(
key: key,
width: 50,
height: 50,
color: Colors.transparent,
child: Padding(
padding: const EdgeInsets.all(5),
child: Container(
constraints: BoxConstraints.expand(),
decoration: BoxDecoration(
color: color,
borderRadius: const BorderRadius.all(const Radius.circular(0.0)),
),
child: Center(
child: Text(
text,
style: const TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 25,
),
),
),
),
),
);
}
Widget dottedBox(Key key, String text, Color color) {
return Transform.translate(
offset: const Offset(75, 100),
child: Container(
key: key,
width: 200,
height: 200,
color: Colors.transparent,
child: Stack(
children: [
Padding(
padding: const EdgeInsets.all(5),
child: Container(
constraints: BoxConstraints.expand(),
decoration: BoxDecoration(
color: color,
borderRadius: const BorderRadius.all(const Radius.circular(10.0)),
),
child: Center(
child: Text(
text,
style: const TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 25,
),
),
),
),
),
Align(
alignment: const Alignment(-0.9, -0.9),
child: Container(
width: 10,
height: 10,
color: Colors.orangeAccent,
),
),
Align(
alignment: const Alignment(0.9, -0.9),
child: Container(
width: 10,
height: 10,
color: Colors.black,
),
),
Align(
alignment: const Alignment(-0.9, 0.9),
child: Container(
width: 10,
height: 10,
color: Colors.deepPurpleAccent,
),
),
],
),
),
);
}Metadata
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pub points
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popularity
Publisher
Metadata
An extensive snap tool/widget for Flutter that allows very flexible snap management and snapping between your widgets.
Homepage
Repository (GitHub)
View/report issues
License
unknown (LICENSE)
