project init

.gitignore

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+.DS_Store
+.dart_tool/
+
+.packages
+.pub/
+
+build/
+ios/.generated/
+ios/Flutter/Generated.xcconfig
+ios/Runner/GeneratedPluginRegistrant.*
+.idea/

CHANGELOG.md

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+## [0.0.1] - 02/09/2018
+
+### initial release.

LICENSE

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+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.

README.md

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+# smooth_star_rating 0.0.1
+
+A Star rating with swipe enabled increment/decrement
+## Getting Started
+
+

android/app/src/main/java/io/flutter/plugins/GeneratedPluginRegistrant.java

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+package io.flutter.plugins;
+
+import io.flutter.plugin.common.PluginRegistry;
+
+/**
+ * Generated file. Do not edit.
+ */
+public final class GeneratedPluginRegistrant {
+  public static void registerWith(PluginRegistry registry) {
+    if (alreadyRegisteredWith(registry)) {
+      return;
+    }
+  }
+
+  private static boolean alreadyRegisteredWith(PluginRegistry registry) {
+    final String key = GeneratedPluginRegistrant.class.getCanonicalName();
+    if (registry.hasPlugin(key)) {
+      return true;
+    }
+    registry.registrarFor(key);
+    return false;
+  }
+}

android/local.properties

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+sdk.dir=E:\\eclipse\\android-sdk-windows
+flutter.sdk=E:\\flutter
+flutter.versionName=0.0.1

lib/smooth_star_rating.dart

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+library smooth_star_rating;
+
+import 'package:flutter/material.dart';
+import 'package:flutter/material.dart';
+
+typedef void RatingChangeCallback(double rating);
+
+class StarRating extends StatelessWidget {
+  final int starCount;
+  final double rating;
+  final RatingChangeCallback onRatingChanged;
+  final Color color;
+  final Color borderColor;
+  final double size;
+  final bool allowHalfRating;
+
+  StarRating(
+      {this.starCount = 5,
+      this.rating = 0.0,
+      this.onRatingChanged,
+      this.color,
+      this.borderColor,
+      this.size,
+      this.allowHalfRating = true});
+
+  Widget buildStar(BuildContext context, int index) {
+    Icon icon;
+    if (index >= rating) {
+      icon = new Icon(
+        Icons.star_border,
+        color: borderColor ?? Theme.of(context).primaryColor,
+        size: size ?? 25.0,
+      );
+    } else if (index > rating - (allowHalfRating ? 0.5 : 1.0) &&
+        index < rating) {
+      icon = new Icon(
+        Icons.star_half,
+        color: color ?? Theme.of(context).primaryColor,
+        size: size ?? 25.0,
+      );
+    } else {
+      icon = new Icon(
+        Icons.star,
+        color: color ?? Theme.of(context).primaryColor,
+        size: size ?? 25.0,
+      );
+    }
+
+    return new GestureDetector(
+      onHorizontalDragUpdate: (dragDetails) {
+        RenderBox box = context.findRenderObject();
+        var _pos = box.globalToLocal(dragDetails.globalPosition);
+        var i = _pos.dx / size;
+        var newRating = allowHalfRating ? i : i.round().toDouble();
+        if (newRating > starCount) {
+          newRating = starCount.toDouble();
+        }
+        if (newRating < 0) {
+          newRating = 0.0;
+        }
+        this.onRatingChanged ?? onRatingChanged(newRating);
+      },
+      child: icon,
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return new Material(
+      color: Colors.transparent,
+      child: new Wrap(
+          alignment: WrapAlignment.start,
+          children: new List.generate(
+              starCount, (index) => buildStar(context, index))),
+    );
+  }
+}