├── banner_gallery_library
├── LICENSE
├── CHANGELOG.md
├── .gitignore
├── .flutter-plugins
├── lib
│ ├── bean
│ │ └── banner_gallery_bean.dart
│ ├── page_view_indicator.dart
│ └── banner_gallery_library.dart
├── .idea
│ ├── modules.xml
│ ├── libraries
│ │ ├── Flutter_Plugins.xml
│ │ ├── Dart_SDK.xml
│ │ └── Dart_Packages.xml
│ ├── misc.xml
│ ├── inspectionProfiles
│ │ └── Project_Default.xml
│ ├── codeStyles
│ │ └── Project.xml
│ └── workspace.xml
├── README.md
├── test
│ └── banner_gallery_library_test.dart
├── banner_gallery_library.iml
└── pubspec.yaml
├── photos
└── Screenshot_v1.gif
├── .gitignore
└── README.md
/banner_gallery_library/LICENSE:
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1 | TODO: Add your license here.
2 |
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/photos/Screenshot_v1.gif:
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https://raw.githubusercontent.com/h3clikejava/BannerGalleryInFlutter/HEAD/photos/Screenshot_v1.gif
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/banner_gallery_library/CHANGELOG.md:
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1 | ## [0.0.1] - TODO: Add release date.
2 |
3 | * TODO: Describe initial release.
4 |
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/banner_gallery_library/.gitignore:
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1 | .DS_Store
2 | .dart_tool/
3 |
4 | .packages
5 | .pub/
6 |
7 | build/
8 | ios/.generated/
9 | ios/Flutter/Generated.xcconfig
10 | ios/Runner/GeneratedPluginRegistrant.*
11 |
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/banner_gallery_library/.flutter-plugins:
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1 | path_provider=/Users/H3c/.pub-cache/hosted/pub.flutter-io.cn/path_provider-0.4.1/
2 | shared_preferences=/Users/H3c/.pub-cache/hosted/pub.flutter-io.cn/shared_preferences-0.4.2/
3 |
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/banner_gallery_library/lib/bean/banner_gallery_bean.dart:
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1 | class BannerGalleryBean {
2 | BannerGalleryBean({this.id, this.photoUrl, this.description});
3 |
4 | /// 唯一标识
5 | final String id;
6 |
7 | /// 图片网址
8 | final String photoUrl;
9 |
10 | /// 描述
11 | final String description;
12 | }
13 |
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/banner_gallery_library/.idea/modules.xml:
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/banner_gallery_library/README.md:
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1 | # banner_gallery_library
2 |
3 | It's an infinity banner gallery widget in flutter.
4 |
5 | ## Getting Started
6 |
7 | For help getting started with Flutter, view our online [documentation](https://flutter.io/).
8 |
9 | For help on editing package code, view the [documentation](https://flutter.io/developing-packages/).
10 |
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/.gitignore:
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1 | # See https://www.dartlang.org/guides/libraries/private-files
2 |
3 | # Files and directories created by pub
4 | .dart_tool/
5 | .packages
6 | .pub/
7 | build/
8 | # If you're building an application, you may want to check-in your pubspec.lock
9 | pubspec.lock
10 |
11 | # Directory created by dartdoc
12 | # If you don't generate documentation locally you can remove this line.
13 | doc/api/
14 | .DS_Store
15 |
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/banner_gallery_library/.idea/libraries/Flutter_Plugins.xml:
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/banner_gallery_library/test/banner_gallery_library_test.dart:
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1 | import 'package:test/test.dart';
2 |
3 | import 'package:banner_gallery_library/banner_gallery_library.dart';
4 |
5 | void main() {
6 | test('adds one to input values', () {
7 | final calculator = new Calculator();
8 | expect(calculator.addOne(2), 3);
9 | expect(calculator.addOne(-7), -6);
10 | expect(calculator.addOne(0), 1);
11 | expect(() => calculator.addOne(null), throwsNoSuchMethodError);
12 | });
13 | }
14 |
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/README.md:
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1 | # BannerGalleryInFlutter
2 | 用Flutter实现的无限滑动Banner。
3 |
4 | 
5 |
6 | 可配置的属性
7 |
8 | |参数名|参数说明|
9 | |-----|--------|
10 | |customViewPageItemWidget|自定义内容布局|
11 | |autoScrollDurationSeconds|自动滑动时间间隔[单位s]|
12 | |bannerScrollDirection|Banner滑动方向[水平/垂直]|
13 | |bannerMargin|Banner之间间距|
14 | |bannerBorderRadius|Banner圆角|
15 | |bannerDefaultBGColor|Banner默认背景颜色|
16 | |bannerTextAlignment|Banner文字位置|
17 | |bannerTextPadding|Banner文字Padding|
18 | |bannerTextColor|Banner文字颜色|
19 | |bannerTextBGColor|Banner文字背景颜色|
20 | |onPageTap|点击的事件监听|
21 | |height|View高度|
22 | |indicatorPositioned|指示器位置|
23 | |indicatorScrollDirection|指示器方向 [水平/垂直]|
24 | |indicatorNormalColor|指示器默认颜色|
25 | |indicatorSelectedColor|指示器选中颜色|
26 | |indicatorNormalSize|指示器点默认大小|
27 | |indicatorScaleSize|指示器点选中放大倍数，默认1.4倍|
28 | |indicatorSpacing|指示器点的间距|
29 | |indicatorStyle|指示器样式[circle: 圆形, square: 方形]|
30 | |indicatorAnimStyle|指示器动画样式[normal: 选中变色, scaled:选中放大]|
31 |
32 |
33 | 使用示例
34 |
35 | ```
36 | /// 构建数据
37 | List _createTestData() {
38 | List list = new List();
39 | for (int n = 0; n < IMGS.length; n++) {
40 | list.add(BannerGalleryBean(
41 | id: n.toString(),
42 | photoUrl: https://www.baidu.com/img/bd_logo1.png?where=super,
43 | description: n.toString);
44 | }
45 | return list;
46 | }
47 |
48 | /// 构建Widget
49 | BannerGalleryWidget(
50 | data: _createTestData(),
51 | indicatorSelectedColor: Theme.of(context).primaryColor,
52 | )
53 | ```
54 |
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/banner_gallery_library/.idea/inspectionProfiles/Project_Default.xml:
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/banner_gallery_library/pubspec.yaml:
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1 | name: banner_gallery_library
2 | description: It's an infinity banner gallery widget in flutter.
3 | version: 0.0.1
4 | author: H3c
5 | homepage: https://github.com/h3clikejava/BannerGalleryInFlutter
6 |
7 | dependencies:
8 | flutter:
9 | sdk: flutter
10 |
11 | cached_network_image: ^0.4.1
12 |
13 | dev_dependencies:
14 | flutter_test:
15 | sdk: flutter
16 |
17 | # For information on the generic Dart part of this file, see the
18 | # following page: https://www.dartlang.org/tools/pub/pubspec
19 |
20 | # The following section is specific to Flutter.
21 | flutter:
22 |
23 | # To add assets to your package, add an assets section, like this:
24 | # assets:
25 | # - images/a_dot_burr.jpeg
26 | # - images/a_dot_ham.jpeg
27 | #
28 | # For details regarding assets in packages, see
29 | # https://flutter.io/assets-and-images/#from-packages
30 | #
31 | # An image asset can refer to one or more resolution-specific "variants", see
32 | # https://flutter.io/assets-and-images/#resolution-aware.
33 |
34 | # To add custom fonts to your package, add a fonts section here,
35 | # in this "flutter" section. Each entry in this list should have a
36 | # "family" key with the font family name, and a "fonts" key with a
37 | # list giving the asset and other descriptors for the font. For
38 | # example:
39 | # fonts:
40 | # - family: Schyler
41 | # fonts:
42 | # - asset: fonts/Schyler-Regular.ttf
43 | # - asset: fonts/Schyler-Italic.ttf
44 | # style: italic
45 | # - family: Trajan Pro
46 | # fonts:
47 | # - asset: fonts/TrajanPro.ttf
48 | # - asset: fonts/TrajanPro_Bold.ttf
49 | # weight: 700
50 | #
51 | # For details regarding fonts in packages, see
52 | # https://flutter.io/custom-fonts/#from-packages
53 |
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/banner_gallery_library/lib/page_view_indicator.dart:
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1 | import 'dart:math';
2 |
3 | import 'package:flutter/material.dart';
4 |
5 | /// 滑动指示器的样式
6 | enum PageViewIndicatorStyle {
7 | /// 圆形
8 | circle,
9 |
10 | /// 正方形
11 | square,
12 | }
13 |
14 | /// 滑动指示器的动画样式
15 | enum PageViewIndicatorAnimStyle {
16 | /// 正常模式
17 | normal,
18 |
19 | /// 缩放模式，选中的变大
20 | scaled,
21 | }
22 |
23 | /// PageView滑动指示器
24 | class PageViewIndicator extends AnimatedWidget {
25 | PageViewIndicator({
26 | this.controller,
27 | this.itemCount: 0,
28 | this.onPageSelected,
29 | this.scrollDirection = Axis.horizontal,
30 | this.normalColor: Colors.white,
31 | this.selectedColor: Colors.white,
32 | this.size: 8.0,
33 | this.spacing: 4.0,
34 | this.scaleSize: 1.4,
35 | this.style: PageViewIndicatorStyle.circle,
36 | this.animStyle: PageViewIndicatorAnimStyle.normal,
37 | }) : assert(controller != null),
38 | super(listenable: controller);
39 |
40 | /// PageView的控制器
41 | final PageController controller;
42 |
43 | /// 指示器的个数
44 | final int itemCount;
45 |
46 | /// 点击的事件监听
47 | final ValueChanged onPageSelected;
48 |
49 | /// 方向
50 | final Axis scrollDirection;
51 |
52 | /// 普通的颜色
53 | final Color normalColor;
54 |
55 | /// 选中的颜色
56 | final Color selectedColor;
57 |
58 | /// 点的大小
59 | final double size;
60 |
61 | /// 点的间距
62 | final double spacing;
63 |
64 | /// 点的样式
65 | final PageViewIndicatorStyle style;
66 |
67 | /// 动画样式
68 | final PageViewIndicatorAnimStyle animStyle;
69 |
70 | /// 选中放大的倍数
71 | final double scaleSize;
72 |
73 | /// 点的Widget
74 | Widget _buildIndicator(int index, int pageCount, double dotSize,
75 | double spacing, double maxZoom) {
76 | // 当前未知
77 | double currentPosition =
78 | ((controller.page ?? controller.initialPage.toDouble()) %
79 | pageCount.toDouble());
80 |
81 | double selectedness = Curves.easeOut.transform(
82 | max(
83 | 0.0,
84 | 1.0 - (currentPosition - index).abs(),
85 | ),
86 | );
87 |
88 | // 是否是当前页面被选中
89 | bool isCurrentPageSelected = index ==
90 | (controller.page != null ? controller.page.round() % pageCount : 0);
91 |
92 | // 修复从0跳到最后一个时状态错误
93 | if (currentPosition > pageCount - 1 && index == 0) {
94 | selectedness = 1 - (pageCount.toDouble() - currentPosition);
95 | }
96 |
97 | // 计算缩放大小
98 | double zoom = 1.0 + (maxZoom - 1.0) * selectedness;
99 |
100 | // 取中间色
101 | final ColorTween selectedColorTween =
102 | ColorTween(begin: normalColor, end: selectedColor);
103 |
104 | return Container(
105 | width: size + (2 * spacing),
106 | height: size + (2 * spacing),
107 | child: Center(
108 | child: Material(
109 | shadowColor: Colors.black,
110 | elevation: 2.0,
111 | color: selectedColorTween.lerp(selectedness),
112 | type: style == PageViewIndicatorStyle.circle
113 | ? MaterialType.circle
114 | : MaterialType.button,
115 | child: Container(
116 | width: dotSize * zoom,
117 | height: dotSize * zoom,
118 | child: InkWell(
119 | onTap: () => onPageSelected(index),
120 | ),
121 | ),
122 | ),
123 | ),
124 | );
125 | }
126 |
127 | @override
128 | Widget build(BuildContext context) {
129 | if (scrollDirection == Axis.vertical) {
130 | return Column(
131 | mainAxisAlignment: MainAxisAlignment.center,
132 | children: List.generate(itemCount, (int index) {
133 | return _buildIndicator(index, itemCount, size, spacing,
134 | animStyle == PageViewIndicatorAnimStyle.scaled ? scaleSize : 1.0);
135 | }),
136 | );
137 | } else {
138 | return Row(
139 | mainAxisAlignment: MainAxisAlignment.center,
140 | children: List.generate(itemCount, (int index) {
141 | return _buildIndicator(index, itemCount, size, spacing,
142 | animStyle == PageViewIndicatorAnimStyle.scaled ? scaleSize : 1.0);
143 | }),
144 | );
145 | }
146 | }
147 | }
148 |
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/banner_gallery_library/lib/banner_gallery_library.dart:
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1 | library banner_gallery_library;
2 |
3 | import 'dart:async';
4 |
5 | import 'package:cached_network_image/cached_network_image.dart';
6 | import 'package:flutter/material.dart';
7 | import 'package:banner_gallery_library/page_view_indicator.dart';
8 | import 'package:banner_gallery_library/bean/banner_gallery_bean.dart';
9 |
10 | // 轮播的Banner Widget
11 | class BannerGalleryWidget extends StatelessWidget {
12 | BannerGalleryWidget({
13 | this.data,
14 | this.customViewPageItemWidget,
15 | this.autoScrollDurationSeconds = 5,
16 | this.onPageTap,
17 | this.height = 150.0,
18 | this.bannerScrollDirection = Axis.horizontal,
19 | this.bannerMargin = const EdgeInsets.only(left: 10.0, right: 10.0),
20 | this.bannerBorderRadius = const BorderRadius.all(Radius.circular(10.0)),
21 | this.bannerDefaultBGColor = Colors.grey,
22 | this.bannerTextAlignment = Alignment.center,
23 | this.bannerTextPadding =
24 | const EdgeInsets.only(left: 15.0, right: 15.0, top: 5.0, bottom: 5.0),
25 | this.bannerTextColor = Colors.white,
26 | this.bannerTextBGColor = Colors.black54,
27 | this.indicatorPositioned = const Positioned(
28 | top: 10.0,
29 | ),
30 | this.indicatorScrollDirection = Axis.horizontal,
31 | this.indicatorNormalColor: Colors.white,
32 | this.indicatorSelectedColor: Colors.white,
33 | this.indicatorNormalSize: 8.0,
34 | this.indicatorScaleSize: 1.4,
35 | this.indicatorSpacing: 4.0,
36 | this.indicatorStyle: PageViewIndicatorStyle.circle,
37 | this.indicatorAnimStyle: PageViewIndicatorAnimStyle.scaled,
38 | });
39 |
40 | /// 内容数据
41 | final List data;
42 |
43 | /// 自定义内容显示样式
44 | final List customViewPageItemWidget;
45 |
46 | /// 自动滑动时间间隔[单位s]
47 | final int autoScrollDurationSeconds;
48 |
49 | /// Banner滑动方向[水平/垂直]
50 | final Axis bannerScrollDirection;
51 |
52 | /// Banner之间间距
53 | final EdgeInsetsGeometry bannerMargin;
54 |
55 | /// Banner圆角
56 | final BorderRadius bannerBorderRadius;
57 |
58 | /// Banner默认背景颜色
59 | final Color bannerDefaultBGColor;
60 |
61 | /// Banner文字位置
62 | final AlignmentGeometry bannerTextAlignment;
63 |
64 | /// Banner文字Padding
65 | final EdgeInsetsGeometry bannerTextPadding;
66 |
67 | /// Banner文字颜色
68 | final Color bannerTextColor;
69 |
70 | /// Banner文字背景颜色
71 | final Color bannerTextBGColor;
72 |
73 | /// 点击的事件监听
74 | final ValueChanged onPageTap;
75 |
76 | /// View高度
77 | final double height;
78 |
79 | /// 指示器位置
80 | final Positioned indicatorPositioned;
81 |
82 | /// 指示器方向 [水平/垂直]
83 | final Axis indicatorScrollDirection;
84 |
85 | /// 指示器默认颜色
86 | final Color indicatorNormalColor;
87 |
88 | /// 指示器选中颜色
89 | final Color indicatorSelectedColor;
90 |
91 | /// 指示器点默认大小
92 | final double indicatorNormalSize;
93 |
94 | /// 指示器点选中放大倍数，默认1.4倍
95 | final double indicatorScaleSize;
96 |
97 | /// 指示器点的间距
98 | final double indicatorSpacing;
99 |
100 | final PageViewIndicatorStyle indicatorStyle;
101 |
102 | /// 指示器动画样式[normal: 选中变色, scaled:选中放大]
103 | final PageViewIndicatorAnimStyle indicatorAnimStyle;
104 |
105 | /// 轮播控制器
106 | Timer _timer;
107 |
108 | /// 控制器
109 | final PageController _controller = PageController(initialPage: 200);
110 |
111 | /// 获得真实数据的长度
112 | int _getReallyDataSize() {
113 | return data != null ? data.length : 0;
114 | }
115 |
116 | /// 有触摸的时候，将轮播控制器状态清空
117 | _resetTimer() {
118 | if (_timer != null) {
119 | _timer.cancel();
120 | }
121 |
122 | _timer = new Timer.periodic(
123 | new Duration(seconds: autoScrollDurationSeconds), (Timer timer) {
124 | if (_controller.page != null) {
125 | var nextPageIndex = _controller.page.toInt() + 1;
126 | _toPage(nextPageIndex);
127 | }
128 | });
129 | }
130 |
131 | /// 跳转到指定ViewPager
132 | void _toPage(int page) {
133 | _controller.animateToPage(page,
134 | duration: Duration(milliseconds: 300), curve: Curves.ease);
135 | }
136 |
137 | /// 生成默认的Item样式
138 | Widget _generateViewPageDefaultItem(BuildContext context, int index) {
139 | return Container(
140 | margin: bannerMargin,
141 | child: Material(
142 | child: InkWell(
143 | onTap: () => onPageTap(index),
144 | onTapDown: _resetTimer(),
145 | child: ClipRRect(
146 | borderRadius: bannerBorderRadius,
147 | child: customViewPageItemWidget != null
148 | ? customViewPageItemWidget[index]
149 | : _generateDefaultView(index),
150 | ),
151 | ),
152 | ));
153 | }
154 |
155 | Widget _generateDefaultView(int index) {
156 | return Stack(
157 | children: [
158 | Container(
159 | height: double.infinity,
160 | width: double.infinity,
161 | alignment: Alignment.center,
162 | color: bannerDefaultBGColor,
163 | child: CachedNetworkImage(
164 | height: double.infinity,
165 | width: double.infinity,
166 | alignment: Alignment.center,
167 | fit: BoxFit.cover,
168 | placeholder: CircularProgressIndicator(),
169 | imageUrl: data[index].photoUrl,
170 | ),
171 | ),
172 | _generateTextView(data[index].description),
173 | ],
174 | );
175 | }
176 |
177 | /// 动态生成文字区域
178 | Widget _generateTextView(String content) {
179 | if (content == null || content.isEmpty) {
180 | return Container();
181 | }
182 |
183 | return Positioned(
184 | left: 0.0,
185 | right: 0.0,
186 | bottom: 0.0,
187 | child: Container(
188 | color: bannerTextBGColor,
189 | padding: bannerTextPadding,
190 | alignment: bannerTextAlignment,
191 | child: Text(
192 | content,
193 | overflow: TextOverflow.ellipsis,
194 | maxLines: 2,
195 | style: TextStyle(color: bannerTextColor),
196 | )),
197 | );
198 | }
199 |
200 | @override
201 | Widget build(BuildContext context) {
202 | _resetTimer();
203 |
204 | return SizedBox(
205 | height: height,
206 | child: Container(
207 | child: Stack(
208 | alignment: Alignment.bottomCenter,
209 | children: [
210 | PageView.builder(
211 | scrollDirection: bannerScrollDirection,
212 | controller: _controller,
213 | itemBuilder: (context, index) {
214 | return _generateViewPageDefaultItem(
215 | context, index % _getReallyDataSize());
216 | }),
217 | Positioned(
218 | left: indicatorPositioned.left,
219 | top: indicatorPositioned.top,
220 | right: indicatorPositioned.right,
221 | bottom: indicatorPositioned.bottom,
222 | child: PageViewIndicator(
223 | controller: _controller,
224 | itemCount: _getReallyDataSize(),
225 | size: indicatorNormalSize,
226 | scrollDirection: indicatorScrollDirection,
227 | normalColor: indicatorNormalColor,
228 | selectedColor: indicatorSelectedColor,
229 | spacing: indicatorSpacing,
230 | scaleSize: indicatorScaleSize,
231 | animStyle: indicatorAnimStyle,
232 | style: indicatorStyle,
233 | onPageSelected: (int page) {
234 | _toPage(page);
235 | },
236 | ),
237 | ),
238 | ],
239 | )));
240 | }
241 | }
242 |
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