fis_lib_report/lib/pages/rt_table.dart

import 'dart:math';

import 'package:fis_lib_report/pages/rt_cell.dart';
import 'package:fis_lib_report/report/cellPostion.dart';
import 'package:fis_lib_report/report/interfaces/block_element.dart';
import 'package:fis_lib_report/report/interfaces/cell.dart';
import 'package:fis_lib_report/report/interfaces/rt_table.dart';
import 'package:fis_lib_report/report/rt_Cell.dart';
import 'package:fis_lib_report/report/rt_table.dart';
import 'package:flutter/cupertino.dart';

class RTTablePage extends StatefulWidget {
  const RTTablePage({required this.element, Key? key}) : super(key: key);

  final RTTable element;

  @override
  State<StatefulWidget> createState() {
    return _RTTableState();
  }
}

class _RTTableState extends State<RTTablePage> {
  Map<CellPostion, ICell>? _cells;
  List<ICell>? _values = [];
  int? _column;
  int? _row;

  @override
  initState() {
    super.initState();
    _cells = widget.element.cells ?? {};
    List<CellPostion> cellPostions = _cells!.keys.toList();
    cellPostions.sort(((a, b) => (b.column!).compareTo(a.column!)));
    // +1 为列数
    _column = cellPostions.first.column! + 1;
    _values = _cells!.values.toList();
    _row = widget.element.rowDefinitions!.length;
  }

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: _row! * 40,
      child: (_column == null || _column == 0 || _values!.isEmpty)
          ? const SizedBox()
          : GridView.builder(
              controller: ScrollController(),
              shrinkWrap: true,
              itemCount: _values!.length,
              gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
                crossAxisCount: _column!,
                childAspectRatio: _column == 3 ? 6.6 : 24,
              ),
              itemBuilder: (BuildContext context, int index) {
                final cell = _values![index];
                RTCell c = cell as RTCell;
                return RTCellPage(
                  cell: c,
                );
              },
            ),
    );
  }
}