p2_carousel_slider 0.0.2

PageView to Set InitialPageOffset

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:p2_carousel_slider/p2_carousel_slider.dart';

final List<String> imgList = [
  'https://images.unsplash.com/photo-1520342868574-5fa3804e551c?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=6ff92caffcdd63681a35134a6770ed3b&auto=format&fit=crop&w=1951&q=80',
  'https://images.unsplash.com/photo-1522205408450-add114ad53fe?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=368f45b0888aeb0b7b08e3a1084d3ede&auto=format&fit=crop&w=1950&q=80',
  'https://images.unsplash.com/photo-1519125323398-675f0ddb6308?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=94a1e718d89ca60a6337a6008341ca50&auto=format&fit=crop&w=1950&q=80',
  'https://images.unsplash.com/photo-1523205771623-e0faa4d2813d?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=89719a0d55dd05e2deae4120227e6efc&auto=format&fit=crop&w=1953&q=80',
  'https://images.unsplash.com/photo-1508704019882-f9cf40e475b4?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=8c6e5e3aba713b17aa1fe71ab4f0ae5b&auto=format&fit=crop&w=1352&q=80',
  'https://images.unsplash.com/photo-1519985176271-adb1088fa94c?ixlib=rb-0.3.5&ixid=eyJhcHBfaWQiOjEyMDd9&s=a0c8d632e977f94e5d312d9893258f59&auto=format&fit=crop&w=1355&q=80'
];

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int ctgrListIndex = 0;
  int ptcoIndex = 0;
  P2CarouselController ctgrCarouselController = P2CarouselController();
  P2CarouselController ptcoCarouselController = P2CarouselController();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            P2CarouselSlider.builder(
              carouselController: ctgrCarouselController,
              disableGesture: true,
              options: CarouselOptions(
                height: 110,
                viewportFraction: 0.2,
                initialPage: 0,
                initialPageOffset: 50,
                padEnds: false,
                enableInfiniteScroll: false,
                pageSnapping: false,
                disableCenter: false,
                enlargeCenterPage: false,
              ),
              itemCount: imgList.length ?? 0,
              itemBuilder: (BuildContext context, int index, int realIndex) {
                return GestureDetector(
                  onTap: () => {
                    setState(() {
                      ctgrListIndex = index;
                      ptcoCarouselController.jumpToPage(0);
                    })
                  },
                  child: PtcoHotIssueCtgrCard(
                    ctgr: imgList[index],
                  ),
                );
              },
            ),
            P2CarouselSlider.builder(
              carouselController: ptcoCarouselController,
              disableGesture: true,
              options: CarouselOptions(
                height: 100,
                aspectRatio: 2.0,
                viewportFraction: 0.9,
                initialPage: 0,
                padEnds: true,
                enableInfiniteScroll: true,
                disableCenter: false,
                onPageChanged: (idx, reason) {
                  setState(() {
                    ptcoIndex = idx;
                  });
                },
              ),
              itemCount: imgList.length ?? 0,
              itemBuilder: (context, index, realIndex) => PtcoHotIssueCard(
                ptcoCtnts : imgList[index],
              ),
            )
          ],
        ),
      ),
    );
  }
}

class PtcoHotIssueCtgrCard extends StatelessWidget {
  const PtcoHotIssueCtgrCard({super.key, required this.ctgr});

  final String ctgr;

  @override
  Widget build(BuildContext context) {
    return Container(
        padding: const EdgeInsets.fromLTRB(0, 10, 0, 0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            Container(
              padding: const EdgeInsets.fromLTRB(10, 10, 10, 0),
              width: 60,
              height: 60,
              child : Image.network(ctgr),
            ),
          ],
        )
    );
  }
}

class PtcoHotIssueCard extends StatelessWidget {
  const PtcoHotIssueCard({super.key, required this.ptcoCtnts});

  final String ptcoCtnts;

  @override
  Widget build(BuildContext context) {
    return Card(
      elevation: 5,
      margin: const EdgeInsets.fromLTRB(10, 10, 10, 10),
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(10),
      ),
      clipBehavior: Clip.antiAlias,
      shadowColor: Colors.grey.withOpacity(0.3),
      child: Stack(
        fit: StackFit.expand,
        children: [
          Image.network(ptcoCtnts)
        ],
      ),
    );
  }
}