flyinsonolite/lib/helpers/reportstylehelper.dart

import 'dart:async';
import 'dart:typed_data';
import 'package:flyinsonolite/consultation/reports/reporttemplate/borders.dart';
import 'package:flyinsonolite/consultation/reports/reporttemplate/interfaces/position_layout.dart';
import 'package:flyinsonolite/consultation/reports/reporttemplate/rt_Cell.dart';
import 'package:flyinsonolite/consultation/reports/reporttemplate/rt_border.dart';
import 'package:flyinsonolite/consultation/reports/reporttemplate/rt_color.dart';
import 'package:flyinsonolite/consultation/reports/reporttemplate/rt_thickness.dart';
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:dio/dio.dart' as dio;

/// 当前类根据报告模板样式生成对应的pdf3.8.1的样式
class ReportStyleHelper {
  ///根据RTThickness生成Pdf的EdgeInsets
  static pw.EdgeInsets convertRTMargin(RTThickness? margin) {
    if (margin != null) {
      var leftReal = margin.left!;
      var topReal = margin.top!;
      var rightReal = margin.right!;
      var bottomReal = margin.bottom!;
      var pwMargin = pw.EdgeInsets.only(
        left: leftReal * PdfPageFormat.point,
        top: topReal * PdfPageFormat.point,
        right: rightReal * PdfPageFormat.point,
        bottom: bottomReal * PdfPageFormat.point,
      );

      return pwMargin;
    }
    return const pw.EdgeInsets.only();
  }

  ///根据RTColor生成PdfColor
  ///PdfColors输入参数要求是RGBA各个值占据一个字符大小空间的百分比
  ///因此需要double的保留精度的除法运算
  static PdfColor getPDFColorFromRTColor(RTColor rtcolor) {
    return PdfColor(rtcolor.r! / 255.0, rtcolor.g! / 255.0, rtcolor.b! / 255.0,
        rtcolor.a! / 255.0);
  }

  /// 根据RTBorderStyle生成PDF的border style
  /// 其中Dashdot、dashdotdot 是根据pdf element的border绘制机制做的转换。
  static pw.BorderStyle getPDFBorderStyle(RTBorderStyle rtBorderStyle) {
    if (rtBorderStyle == RTBorderStyle.None) {
      return pw.BorderStyle.none;
    }
    if (rtBorderStyle == RTBorderStyle.Dash) {
      return pw.BorderStyle.dashed;
    }
    if (rtBorderStyle == RTBorderStyle.Dot) {
      return pw.BorderStyle.dotted;
    }
    if (rtBorderStyle == RTBorderStyle.Solid) {
      return pw.BorderStyle.solid;
    }
    if (rtBorderStyle == RTBorderStyle.DashDot) {
      return const pw.BorderStyle(pattern: <int>[2, 2]);
    }
    if (rtBorderStyle == RTBorderStyle.DashDotDot) {
      return const pw.BorderStyle(pattern: <int>[2, 1]);
    }
    return const pw.BorderStyle();
  }

  ///根据RTCell 获得PDF对应的BoxDecoration
  static pw.BoxDecoration getPDFCellBorderBox(RTCell rtCell) {
    var cellColor = getPDFColorFromRTColor(rtCell.background!);

    var cellBorder = getPDFBorder(rtCell.borders!);

    var cellDecoration = pw.BoxDecoration(border: cellBorder, color: cellColor);
    return cellDecoration;
  }

  static pw.BoxDecoration getAllBlackBorderDecoration(RTCell rtCell) {
    var cellColor = getPDFColorFromRTColor(rtCell.background!);

    var cellDecoration = pw.BoxDecoration(
        border: pw.Border.all(color: PdfColors.black), color: cellColor);
    return cellDecoration;
  }

  ///根据Borders 获得PDF对应的Border
  static pw.Border getPDFBorder(Borders borders) {
    var left = getPDFBorderSide(borders.left);
    var top = getPDFBorderSide(borders.top);
    var right = getPDFBorderSide(borders.right);
    var bottom = getPDFBorderSide(borders.bottom);
    var border = pw.Border(left: left, top: top, right: right, bottom: bottom);
    return border;
  }

  ///根据RTBorder 获得PDF对应的BorderSide
  static pw.BorderSide getPDFBorderSide(RTBorder border) {
    var borderStyle = getPDFBorderStyle(border.borderStyle);
    var color = getPDFColorFromRTColor(border.color);

    var borderSide = pw.BorderSide(
        width: border.thickness, style: borderStyle, color: color);
    return borderSide;
  }

  ///根据HorizontalLayout 获得PDF对应的行MainAxisAlignment
  static pw.MainAxisAlignment getRowMainAisAlign(HorizontalLayout hor) {
    if (hor == HorizontalLayout.Center) {
      return pw.MainAxisAlignment.center;
    }
    if (hor == HorizontalLayout.Right) {
      return pw.MainAxisAlignment.end;
    }

    return pw.MainAxisAlignment.start;
  }

  ///根据HorizontalLayout 获得PDF对应的行Aling
  static pw.Alignment? getRowMainAlign(HorizontalLayout hor,
      {bool hasLeft = false}) {
    if (hor == HorizontalLayout.Center) {
      return pw.Alignment.centerLeft;
    }
    if (hor == HorizontalLayout.Right) {
      return pw.Alignment.centerRight;
    }
    if (hasLeft) {
      if (hor == HorizontalLayout.Left) {
        return pw.Alignment.centerLeft;
      }
    }
    return null;
  }

  ///根据HorizontalLayout 获得PDF对应的行CrossAxisAlignment
  static pw.CrossAxisAlignment getColumnCrossAisAlign(HorizontalLayout hor) {
    if (hor == HorizontalLayout.Center) {
      return pw.CrossAxisAlignment.center;
    }
    if (hor == HorizontalLayout.Right) {
      return pw.CrossAxisAlignment.end;
    }
    if (hor == HorizontalLayout.Stretch) {
      return pw.CrossAxisAlignment.start;
    }
    return pw.CrossAxisAlignment.start;
  }

  ///根据Vertical 获得PDF对应的列MainAxisAlignment
  static pw.MainAxisAlignment getColumnMainAisAlign(VerticalLayout ver) {
    if (ver == VerticalLayout.Center) {
      return pw.MainAxisAlignment.center;
    }
    if (ver == VerticalLayout.Top) {
      return pw.MainAxisAlignment.start;
    }
    if (ver == VerticalLayout.Bottom) {
      return pw.MainAxisAlignment.end;
    }
    if (ver == VerticalLayout.Stretch) {
      return pw.MainAxisAlignment.start;
    }
    return pw.MainAxisAlignment.start;
  }

  ///根据Hor 获得PDF对应的Wrap的Alignment
  static pw.WrapAlignment getWrapAlignment(HorizontalLayout ver) {
    if (ver == HorizontalLayout.Center) {
      return pw.WrapAlignment.center;
    }
    if (ver == HorizontalLayout.Left) {
      return pw.WrapAlignment.start;
    }
    if (ver == HorizontalLayout.Right) {
      return pw.WrapAlignment.end;
    }
    return pw.WrapAlignment.start;
  }

  ///根据Ver 获得PDF对应的Wrap的CrossAlign
  static pw.WrapCrossAlignment getWrapCrossAlignment(VerticalLayout ver) {
    if (ver == VerticalLayout.Center) {
      return pw.WrapCrossAlignment.center;
    }

    if (ver == VerticalLayout.Bottom) {
      return pw.WrapCrossAlignment.end;
    }
    return pw.WrapCrossAlignment.center;
  }

  ///根据verticalLayout 获得PDF对应的行纵轴布局方式
  static pw.CrossAxisAlignment getCrossAsiAlign(VerticalLayout verticalLayout) {
    if (verticalLayout == VerticalLayout.Bottom) {
      return pw.CrossAxisAlignment.end;
    }
    if (verticalLayout == VerticalLayout.Center) {
      return pw.CrossAxisAlignment.center;
    }
    if (verticalLayout == VerticalLayout.Stretch) {
      return pw.CrossAxisAlignment.stretch;
    }
    if (verticalLayout == VerticalLayout.Top) {
      return pw.CrossAxisAlignment.start;
    }
    return pw.CrossAxisAlignment.start;
  }

  /// 根据 verticalLayout 和 horizontalLayout 获取首个子元素对齐方式
  static pw.Alignment getChildAlignment(RTCell cellElement) {
    if (cellElement.blocks == null || cellElement.blocks!.isEmpty) {
      return pw.Alignment.center;
    }
    VerticalLayout verticalLayout = cellElement.blocks![0].verticalAlignment!;
    HorizontalLayout horizontalLayout =
        cellElement.blocks![0].horizontalAlignment!;
    pw.Alignment alignment =
        _getAlignmentByLayout(verticalLayout, horizontalLayout);
    return alignment;
  }

  static pw.Alignment _getAlignmentByLayout(
      VerticalLayout verticalLayout, HorizontalLayout horizontalLayout) {
    pw.Alignment alignment = pw.Alignment.center;
    switch (verticalLayout) {
      case VerticalLayout.Top:
        switch (horizontalLayout) {
          case HorizontalLayout.Left:
            alignment = pw.Alignment.topLeft;
            break;
          case HorizontalLayout.Center:
            alignment = pw.Alignment.topCenter;
            break;
          case HorizontalLayout.Right:
            alignment = pw.Alignment.topRight;
            break;
          case HorizontalLayout.Stretch:
            alignment = pw.Alignment.topLeft;
            break;
        }
        break;
      case VerticalLayout.Center:
        switch (horizontalLayout) {
          case HorizontalLayout.Left:
            alignment = pw.Alignment.centerLeft;
            break;
          case HorizontalLayout.Center:
            alignment = pw.Alignment.center;
            break;
          case HorizontalLayout.Right:
            alignment = pw.Alignment.centerRight;
            break;
          case HorizontalLayout.Stretch:
            alignment = pw.Alignment.centerLeft;
            break;
        }
        break;
      case VerticalLayout.Bottom:
        switch (horizontalLayout) {
          case HorizontalLayout.Left:
            alignment = pw.Alignment.bottomLeft;
            break;
          case HorizontalLayout.Center:
            alignment = pw.Alignment.bottomCenter;
            break;
          case HorizontalLayout.Right:
            alignment = pw.Alignment.bottomRight;
            break;
          case HorizontalLayout.Stretch:
            alignment = pw.Alignment.bottomLeft;
            break;
        }
        break;
      case VerticalLayout.Stretch:
        switch (horizontalLayout) {
          case HorizontalLayout.Left:
            alignment = pw.Alignment.centerLeft;
            break;
          case HorizontalLayout.Center:
            alignment = pw.Alignment.center;
            break;
          case HorizontalLayout.Right:
            alignment = pw.Alignment.centerRight;
            break;
          case HorizontalLayout.Stretch:
            alignment = pw.Alignment.centerLeft;
            break;
        }
        break;
    }
    return alignment;
  }

  ///根据图片地址获取MemoryImage
  static Future<Uint8List> getMemoryImage(String imageUrl) async {
    var value = await getDataFromNetwork(imageUrl);

    return value!;
  }

  /// 从链接获取Vid信息
  ///
  /// [url] vid文件链接
  static Future<Uint8List?> getDataFromNetwork(String url) async {
    try {
      final httpClient = dio.Dio(dio.BaseOptions(
        responseType: dio.ResponseType.bytes,
        sendTimeout: 10 * 1000,
      ));

      final response = await httpClient.get(url);
      httpClient.close();
      final bytes = response.data as Uint8List;

      return bytes;
    } catch (e) {
      // logger
      return null;
    }
  }
}