huixiang_app/lib/home/huixiang_brand_page.dart

import 'package:dio/dio.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter_html/flutter_html.dart';
import 'package:flutter_html/image_render.dart';
import 'package:flutter_swiper/flutter_swiper.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:huixiang/main.dart';
import 'package:huixiang/retrofit/data/banner.dart';
import 'package:huixiang/retrofit/data/base_data.dart';
import 'package:huixiang/retrofit/data/brand_data.dart';
import 'package:huixiang/retrofit/retrofit_api.dart';
import 'package:huixiang/utils/MyPainter.dart';
import 'package:huixiang/utils/event_type.dart';
import 'package:huixiang/view_widget/classic_header.dart';
import 'package:huixiang/view_widget/custom_image.dart';
import 'package:huixiang/view_widget/icon_text.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:huixiang/view_widget/loading_view.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';
import 'package:shared_preferences/shared_preferences.dart';

class BrandPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _BrandPage();
  }
}

class _BrandPage extends State<BrandPage>
    with SingleTickerProviderStateMixin, AutomaticKeepAliveClientMixin {
  ScrollController scrollController;

  List<String> images = [
    "assets/image/icon_chili.png",
    "assets/image/icon_milk_tea.png",
    "assets/image/icon_bread.png",
  ];

  GlobalKey chiliGlobalKey = GlobalKey();
  GlobalKey milkTeaGlobalKey = GlobalKey();
  GlobalKey breadGlobalKey = GlobalKey();

  ApiService apiService;
  BrandData brandData;
  List<BannerData> bannerData = [];
  List<String> brandText = [];
  var isShowMore = false;

  queryHome() async {
    showCupertinoDialog(
        context: context,
        barrierDismissible: true,
        builder: (context) {
          return LoadingView();
        });
    BaseData baseData = await apiService.queryHome().catchError((error) {
      refreshController.refreshFailed();
    });

    BaseData banner = await apiService.queryBanner({
      "model": {"type": "BRAND_APP"},
    }).catchError((error) {
      refreshController.refreshFailed();
    });
    bannerData.clear();
    bannerData.addAll((banner.data["records"] as List<dynamic>)
        .map((e) => BannerData.fromJson(e))
        .toList());

    if (Navigator.canPop(context)) Navigator.of(context).pop();

    if (baseData != null && baseData.isSuccess) {
      refreshController.refreshCompleted();
      brandData = BrandData.fromJson(baseData.data);
      brandText = (brandData.contents as Map<String, dynamic>).keys.toList();
      setState(() {});
    } else {
      refreshController.refreshFailed();
    }
  }

  @override
  void initState() {
    super.initState();

    SharedPreferences.getInstance().then((value) => {
          apiService = ApiService(Dio(),
              context: context, token: value.getString('token')),
          queryHome(),
        });
    if (scrollController == null)
      scrollController = ScrollController();

    scrollController.addListener(() {
      RenderBox chiliRenderBox =
          chiliGlobalKey.currentContext.findRenderObject();
      RenderBox milkTeaRenderBox =
          milkTeaGlobalKey.currentContext.findRenderObject();
      RenderBox breadRenderBox =
          breadGlobalKey.currentContext.findRenderObject();

      Offset chiliOffset = chiliRenderBox.localToGlobal(Offset.zero);
      Offset milkTeaOffset = milkTeaRenderBox.localToGlobal(Offset.zero);
      Offset breadOffset = breadRenderBox.localToGlobal(Offset.zero);

      var top = 96.h;
      if (chiliOffset.dy <= top) {
        if (!isVisible) {
          isVisible = true;
          setState(() {});
        }
      } else {
        var b = isVisible;
        isVisible = false;
        if (b) setState(() {});
        selectedIndex = -1;
      }
      if (chiliOffset.dy <= top && breadOffset.dy > top) {
        selectedIndex = 0;
        if (selectedIndex1 != selectedIndex) {
          setState(() {
            print("object：$selectedIndex");
          });
          selectedIndex1 = selectedIndex;
        }
      } else if (breadOffset.dy <= top && milkTeaOffset.dy > top) {
        selectedIndex = 1;
        if (selectedIndex1 != selectedIndex) {
          setState(() {
            print("object：$selectedIndex");
          });
          selectedIndex1 = selectedIndex;
        }
      } else if (milkTeaOffset.dy <= top) {
        selectedIndex = 2;
        if (selectedIndex1 != selectedIndex) {
          setState(() {
            print("object：$selectedIndex");
          });
          selectedIndex1 = selectedIndex;
        }
      }
    });

    eventBus.on<EventType>().listen((event) {
      print("object: BrandPage");
      setState(() {});
    });
  }

  int selectedIndex = -1;
  int selectedIndex1 = -1;
  RefreshController refreshController = RefreshController();

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return Scaffold(
      appBar: AppBar(
        toolbarHeight: 40.h - MediaQuery.of(context).padding.top,
        backgroundColor: Colors.white,
        elevation: 0,
      ),
      body: Container(
        padding: EdgeInsets.only(bottom: 76.h),
        child: Stack(
          children: [
            Container(
              child: SmartRefresher(
                controller: refreshController,
                enablePullDown: true,
                enablePullUp: false,
                header: MyHeader(),
                physics: ClampingScrollPhysics(),
                onRefresh: queryHome,
                scrollController: scrollController,
                child: Container(
                  child: SingleChildScrollView(
                    physics: NeverScrollableScrollPhysics(),
                    child: Container(
                      color: Color(0xFFF7F7F7),
                      margin: EdgeInsets.only(top: 16.h),
                      child: Column(
                        children: homeChildItem(),
                      ),
                    ),
                  ),
                ),
              ),
            ),
            Positioned(
              child: Visibility(
                visible: isVisible,
                child: Container(
                  width: MediaQuery.of(context).size.width,
                  child: Container(
                    height: 52.h,
                    color: Colors.white,
                    padding: EdgeInsets.all(6),
                    alignment: Alignment.center,
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.spaceAround,
                      crossAxisAlignment: CrossAxisAlignment.center,
                      children: (brandText == null || brandText.isEmpty)
                          ? []
                          : (brandText.map((e) {
                              return item(
                                  e,
                                  selectedIndex == brandText.indexOf(e),
                                  brandText.indexOf(e));
                            }).toList()),
                    ),
                  ),
                ),
              ),
              top: 0,
            ),
          ],
        ),
      ),
    );
  }

  List<Widget> homeChildItem() {
    var widgets = <Widget>[banner(), buildInfo(), buildTab()];
    if (brandData == null) return widgets;
    (brandData.contents as Map<String, dynamic>).forEach((key, value) {
      widgets.add(Container(
        key: key == "百年川椒"
            ? chiliGlobalKey
            : (key == "前进麦味" ? breadGlobalKey : milkTeaGlobalKey),
        child: Container(
          child: Html(
            data: value,
            customImageRenders: {
              networkSourceMatcher(domains: ["flutter.dev"]):
                  (context, attributes, element) {
                return Image.asset("assets/image/default_1.png");
              },
            },
          ),
        ),
      ));
    });
    return widgets;
  }

  bool isVisible = false;

  Widget buildTab() {
    return Container(
      // key: tabGlobalKey,
      height: 52.h,
      padding: EdgeInsets.all(6),
      alignment: Alignment.center,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceAround,
        crossAxisAlignment: CrossAxisAlignment.center,
        children: (brandText == null || brandText.isEmpty)
            ? []
            : brandText
                .map((e) => item(e, selectedIndex == brandText.indexOf(e),
                    brandText.indexOf(e)))
                .toList(),
      ),
    );
  }

  Widget item(text, isSelected, index) {
    print("selectedIndex: $selectedIndex");
    return GestureDetector(
      onTap: () {
        FlexParentData parendData;
        if (index == 0) {
          parendData =
              chiliGlobalKey.currentContext.findRenderObject().parentData;
        } else if (index == 2) {
          parendData =
              milkTeaGlobalKey.currentContext.findRenderObject().parentData;
        } else if (index == 1) {
          parendData =
              breadGlobalKey.currentContext.findRenderObject().parentData;
        }
        double offset = parendData.offset.dy - 52.h + 20.h;
        scrollController.animateTo(offset,
            duration: Duration(seconds: 1), curve: Curves.ease);
      },
      child: tabItem(text, isSelected, index),
    );
  }

  Widget tabItem(text, isSelected, index) {
    if (isSelected) {
      return IconText(
        text,
        isMax: false,
        rightImage: images[index],
        iconSize: 16,
        iconColor: Colors.red,
        textStyle: TextStyle(
            fontWeight: FontWeight.bold,
            fontSize: 16,
            color: Color(0xFF353535)),
      );
    } else {
      return IconText(
        text,
        isMax: false,
        textStyle: TextStyle(
            fontWeight: FontWeight.bold,
            fontSize: 16,
            color: Color(0xFF353535)),
      );
    }
  }

  Widget buildInfo() {
    return Container(
      margin: EdgeInsets.only(bottom: 20, top: 16),
      padding: EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.white,
        boxShadow: [
          BoxShadow(
            color: Colors.black.withAlpha(12),
            offset: Offset(0, 2),
            blurRadius: 14,
            spreadRadius: 0,
          )
        ],
      ),
      child: Column(
        mainAxisAlignment: MainAxisAlignment.spaceAround,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          GestureDetector(
            onTap: () {
              Navigator.of(context).pushNamed('/router/founder_story_page');
            },
            child: Row(
              mainAxisAlignment: MainAxisAlignment.start,
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                ClipOval(
                  child: MImage(
                    brandData == null ? "" : brandData.originAvatar,
                    fit: BoxFit.cover,
                    width: 60.w,
                    height: 60.h,
                    errorSrc: "assets/image/default_1.png",
                    fadeSrc: "assets/image/default_1.png",
                  ),
                  clipBehavior: Clip.hardEdge,
                ),
                SizedBox(
                  width: 16.w,
                ),
                Expanded(
                  child: Container(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text.rich(
                          TextSpan(children: [
                            TextSpan(
                              text:
                                  brandData == null ? "" : brandData.originator,
                              style: TextStyle(
                                fontWeight: FontWeight.bold,
                                fontSize: 14.sp,
                                color: Colors.black,
                              ),
                            ),
                            TextSpan(
                              text: S.of(context).jituanchuangbanren,
                              style: TextStyle(
                                fontSize: 10.sp,
                                color: Colors.black,
                              ),
                            ),
                          ]),
                          textDirection: TextDirection.ltr,
                        ),
                        Text(
                          brandData == null ? "" : brandData.originDesc,
                          overflow: isShowMore
                              ? TextOverflow.visible
                              : TextOverflow.ellipsis,
                          maxLines: isShowMore ? 10 : 2,
                          style: TextStyle(
                            fontSize: 12.sp,
                            color: Colors.black,
                          ),
                        ),
                        SizedBox(height: 3.h),
                        GestureDetector(
                          onTap: () {
                            setState(() {
                              isShowMore = !isShowMore;
                            });
                          },
                          child: Row(
                            mainAxisAlignment: MainAxisAlignment.end,
                            crossAxisAlignment: CrossAxisAlignment.center,
                            mainAxisSize: MainAxisSize.max,
                            children: [
                              Text(
                                S.of(context).gengduo,
                                style: TextStyle(
                                  fontSize: 12.sp,
                                  color: Colors.black,
                                ),
                              ),
                              Icon(
                                (isShowMore != null && !isShowMore)
                                    ? Icons.chevron_right
                                    : Icons.keyboard_arrow_up,
                                color: Colors.black,
                                size: 18,
                              ),
                            ],
                          ),
                        ),
                      ],
                    ),
                  ),
                  flex: 1,
                ),
              ],
            ),
          ),
          SizedBox(
            height: 40,
          ),
          Text(
            brandData == null ? "" : brandData.company,
            style: TextStyle(
              fontSize: 16.sp,
              fontWeight: FontWeight.bold,
              color: Colors.black,
            ),
          ),
          SizedBox(
            height: 20,
          ),
          Text(
            brandData == null ? "" : brandData.companyDesc,
            textAlign: TextAlign.justify,
            style: TextStyle(
              fontSize: 12.sp,
              color: Color(0xFF353535),
            ),
          ),
          SizedBox(
            height: 40,
          ),
          Text(
            S.of(context).linian,
            style: TextStyle(
              fontSize: 16.sp,
              fontWeight: FontWeight.bold,
              color: Colors.black,
            ),
          ),
          SizedBox(
            height: 20,
          ),
          Column(
            children: [
              //理念板块
              // Row(
              //   mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              //   crossAxisAlignment: CrossAxisAlignment.center,
              //   children: buildIdea(),
              // ),
              Row(
                children: [
                  _ideaWidget("友爱", "assets/image/icon_idea_ya.png"),
                  _ideaWidget("纯净", "assets/image/icon_idea_cj.png"),
                  _ideaWidget("健康", "assets/image/icon_idea_jk.png"),
                ],
              ),
              SizedBox(
                height: 18,
              ),
              //理念板块
              // Row(
              //   mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              //   crossAxisAlignment: CrossAxisAlignment.center,
              //   children: buildIdea(),
              // ),
              Row(
                children: [
                  _ideaWidget("有机", "assets/image/icon_idea_yj.png"),
                  _ideaWidget("环保", "assets/image/icon_idea_hb.png"),
                  _ideaWidget("智慧", "assets/image/icon_idea_zh.png"),
                ],
              ),
            ],
          ),
        ],
      ),
    );
  }

  //理念板块
  // List<Widget> buildIdea() {
  //   if (brandData == null) return [];
  //   var ideas = <Widget>[];
  //   (brandData.ideals as Map<String, dynamic>).forEach((key, value) {
  //     ideas.add(idea(key, value));
  //   });
  //   return ideas;
  // }

  Widget _ideaWidget(var text, String img) {
    return Expanded(
      flex: 1,
      child: Stack(
        alignment: Alignment.center,
        children: [
          Container(
            width: 63,
            height: 63,
            child: Stack(
              alignment: Alignment.center,
              children: [
                Align(
                  child: CircleAvatar(
                    child: Image.asset(img),
                    radius: 100,
                  ),
                ),
                Text(
                  text,
                  style: TextStyle(
                      fontSize: 18,
                      fontWeight: FontWeight.w300,
                      color: Colors.white),
                )
              ],
            ),
            // CircleAvatar(
            //   radius: 100,
            //   backgroundImage: Image.asset(img),
            //   child: Container(
            //       alignment: Alignment.center,
            //       child: Text(
            //         text,
            //         style: TextStyle(
            //             fontSize: 18,
            //             fontWeight: FontWeight.w300,
            //             color: Colors.white),
            //       )),
            // ),
          ),
          Container(
            width: 73,
            height: 73,
            child: CustomPaint(
              painter: MyPainter(
                  lineColor: Color(0xff32A060), width: 2, isDividerRound: true),
            ),
          )
        ],
      ),
    );
  }

  banner() {
    return Container(
      child: AspectRatio(
        aspectRatio: 2.08,
        child: Swiper(
            viewportFraction: 0.88,
            scale: 0.93,
            // loop: true,
            // autoplay: true,
            // duration: 2500,
            pagination: SwiperPagination(
              alignment: Alignment.bottomCenter,
              builder: DotSwiperPaginationBuilder(
                size: 8,
                activeSize: 8,
                space: 5,
                activeColor: Colors.black,
                color: Colors.black.withAlpha(76),
              ),
            ),
            physics: BouncingScrollPhysics(),
            itemBuilder: (context, position) {
              return MImage(
                (bannerData != null && position < bannerData.length)
                    ? bannerData[position].imgUrl
                    : "",
                fit: BoxFit.cover,
                radius: BorderRadius.circular(8),
                errorSrc: "assets/image/default_2_1.png",
                fadeSrc: "assets/image/default_2_1.png",
              );
            },
            itemCount: (bannerData != null && bannerData.length > 0)
                ? bannerData.length
                : 1),
      ),
    );
  }

  Widget idea(key, value) {
    return Expanded(
      flex: 1,
      child: Stack(
        alignment: Alignment.center,
        children: [
          Container(
            width: 63.w,
            height: 63.h,
            child: CircleAvatar(
              radius: 100,
              backgroundImage: NetworkImage(value),
              child: Container(
                  alignment: Alignment.center,
                  child: Text(
                    key,
                    style: TextStyle(
                        fontSize: 16.sp,
                        fontWeight: FontWeight.w300,
                        color: Colors.white),
                  )),
            ),
          ),
          Container(
            width: 73.w,
            height: 73.h,
            child: CustomPaint(
              painter: MyPainter(
                lineColor: Color(0xff32A060),
                width: 2.w,
                isDividerRound: true,
              ),
            ),
          )
        ],
      ),
    );
    //   Stack(
    //   children: [
    //     MImage(
    //       value,
    //       width: 71,
    //       height: 71,
    //       fit: BoxFit.cover,
    //       errorSrc: "assets/image/default_1.png",
    //       fadeSrc: "assets/image/default_1.png",
    //     ),
    //     Positioned(
    //       bottom: 0,
    //       child: Container(
    //         width: 71,
    //         decoration: BoxDecoration(
    //           color: Colors.black.withAlpha(125),
    //           borderRadius: BorderRadius.only(
    //             bottomRight: Radius.circular(4),
    //             bottomLeft: Radius.circular(4),
    //           ),
    //         ),
    //         padding: EdgeInsets.symmetric(vertical: 2),
    //         alignment: Alignment.center,
    //         child: Text(
    //           key,
    //           style: TextStyle(
    //             color: Colors.white,
    //             fontSize: 12.sp,
    //           ),
    //         ),
    //       ),
    //     )
    //   ],
    // );
  }

  @override
  bool get wantKeepAlive => true;
}