kmpdfkit_demo/lib/widgets/models/text_stamp_bean.dart

import 'package:flutter/material.dart';

///  text_stamp_bean.dart
///
///  Copyright © 2014-2023 PDF Technologies, Inc. All Rights Reserved.
///
///  THIS SOURCE CODE AND ANY ACCOMPANYING DOCUMENTATION ARE PROTECTED BY INTERNATIONAL COPYRIGHT LAW
///  AND MAY NOT BE RESOLD OR REDISTRIBUTED. USAGE IS BOUND TO THE ComPDFKit LICENSE AGREEMENT.
///  UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS SUBJECT TO CIVIL AND CRIMINAL PENALTIES.
///  This notice may not be removed from this file.

class TextStampBean {
  String content;

  String date;

  String time;

  TextStampStyleShape shape;

  TextStampStyleShapeColor color;

  String? previewImagePath;

  bool select;

  TextStampBean(
      {required this.content,
      this.date = "",
      this.time = "",
      this.shape = TextStampStyleShape.rightRect,
      this.color = TextStampStyleShapeColor.textStampGreen,
      this.previewImagePath = '',
      this.select = false});

  TextStampColorData getColors() {
    switch (color) {
      case TextStampStyleShapeColor.textStampWhite:
        return TextStampColorData(
            const Color(0x00FFFFFF), Colors.black, const Color(0x00FFFFFF));
      case TextStampStyleShapeColor.textStampRed:
        return TextStampColorData(const Color(0xFFFEC7C7),
            const Color(0xFF77140B), const Color(0xFF8C3022));
      case TextStampStyleShapeColor.textStampGreen:
        return TextStampColorData(const Color(0xFFCFE0C7),
            const Color(0xFF325413), const Color(0xFF567335));
      case TextStampStyleShapeColor.textStampBlue:
        return TextStampColorData(const Color(0xFFCBCFE2),
            const Color(0xFF09144A), const Color(0xFF313968));
    }
  }

  List<Color> getLinearGradientColors() {
    // 将原始颜色的 alpha 值降低为 85，即透明度降低约 67%
    Color bgColor = getColors().bgColor;
    return [bgColor.withOpacity(0.33), bgColor];
  }

  Map<String, dynamic> toJson() {
    return {
      'content': content,
      'date': date,
      'time': time,
      'shape': shape.name,
      'color': color.name
    };
  }

  factory TextStampBean.fromJson(Map<String, dynamic> json) {
    return TextStampBean(
        content: json['content'],
        date: json['date'],
        time: json['time'],
        shape: TextStampStyleShape.values.byName(json['shape']),
        color: TextStampStyleShapeColor.values.byName(json['color']));
  }


  @override
  String toString() {
    return '{content:$content, date:$date, time:$time, shape:${shape.name}, color:${color.name}';
  }

  String getDateStr() {
    if(date.isEmpty && time.isEmpty){
      return '';
    }

    if (date.isNotEmpty && time.isEmpty){
      return date;
    } else if (date.isEmpty && time.isNotEmpty){
      return time;
    }else {
      return '$date $time';
    }
  }

  bool available(){
    return content.isNotEmpty || date.isNotEmpty || time.isNotEmpty;
  }
}

class TextStampColorData {
  Color bgColor;

  Color textColor;

  Color lineColor;

  TextStampColorData(this.bgColor, this.textColor, this.lineColor);
}

enum TextStampStyleShape { empty, rect, leftRect, rightRect }

extension TextStampStyleShapeExtension on TextStampStyleShape {
  String get type {
    switch (this) {
      case TextStampStyleShape.empty:
        return 'TEXTSTAMP_NONE';
      case TextStampStyleShape.rect:
        return 'TEXTSTAMP_RECT';
      case TextStampStyleShape.leftRect:
        return 'TEXTSTAMP_LEFT_TRIANGLE';
      case TextStampStyleShape.rightRect:
        return 'TEXTSTAMP_RIGHT_TRIANGLE';
    }
  }
}

enum TextStampStyleShapeColor {
  textStampWhite,
  textStampRed,
  textStampGreen,
  textStampBlue
}

extension TextStampStyleShapeColorExtension on TextStampStyleShapeColor {
  String get type {
    switch (this) {
      case TextStampStyleShapeColor.textStampWhite:
        return 'TEXTSTAMP_WHITE';
      case TextStampStyleShapeColor.textStampRed:
        return 'TEXTSTAMP_RED';
      case TextStampStyleShapeColor.textStampGreen:
        return 'TEXTSTAMP_GREEN';
      case TextStampStyleShapeColor.textStampBlue:
        return 'TEXTSTAMP_BLUE';
    }
  }
}