397 lines
14 KiB
C#
397 lines
14 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using UnityEngine;
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using UnityEngine.UI;
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using SK.Framework;
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using System.Linq;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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// 注意：使用此功能前需要安装iTextSharp库
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// 可以通过NuGet包管理器安装iTextSharp 5.5.13.3 或更高版本
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using iTextSharp.text;
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using iTextSharp.text.pdf;
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using UnityEngine.Networking;
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/// <summary>
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/// PDF导出管理器
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/// </summary>
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public class PdfExportManager : MonoSingleton<PdfExportManager>
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{
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[Header("PDF导出设置")]
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public float margin = 50f; // 页面边距
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public float fontSize = 12f; // 正文字体大小
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public float titleFontSize = 18f; // 标题字体大小
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public float headerFooterFontSize = 10f; // 页眉页脚字体大小
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// 存储已选择的附件文件路径列表
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private List<string> attachedFiles = new List<string>();
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/// <summary>
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/// 添加附件
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/// </summary>
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/// <param name="filePath">附件文件路径</param>
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public void AddAttachment(string filePath)
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{
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if (!string.IsNullOrEmpty(filePath) && File.Exists(filePath))
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{
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if (!attachedFiles.Contains(filePath))
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{
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attachedFiles.Add(filePath);
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Debug.Log($"附件已添加: {filePath}");
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}
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}
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else
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{
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Debug.LogWarning($"文件不存在: {filePath}");
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}
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}
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/// <summary>
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/// 移除附件
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/// </summary>
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/// <param name="filePath">要移除的附件文件路径</param>
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public void RemoveAttachment(string filePath)
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{
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attachedFiles.Remove(filePath);
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Debug.Log($"附件已移除: {filePath}");
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}
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/// <summary>
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/// 清空所有附件
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/// </summary>
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public void ClearAttachments()
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{
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attachedFiles.Clear();
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Debug.Log("所有附件已清空");
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}
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/// <summary>
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/// 获取附件列表
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/// </summary>
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/// <returns>附件文件路径列表</returns>
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public List<string> GetAttachments()
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{
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return new List<string>(attachedFiles);
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}
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/// <summary>
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/// 导出PDF文档
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/// </summary>
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/// <param name="title">PDF标题</param>
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/// <param name="content">PDF内容</param>
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/// <param name="outputPath">输出路径</param>
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/// <param name="onComplete">完成回调</param>
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public void ExportPdf(string title, string content, string outputPath, Action<bool, string> onComplete = null)
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{
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StartCoroutine(ExportPdfCoroutine(title, content, outputPath, onComplete));
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}
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/// <summary>
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/// 导出PDF协程
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/// </summary>
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private IEnumerator ExportPdfCoroutine(string title, string content, string outputPath, Action<bool, string> onComplete)
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{
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yield return new WaitForEndOfFrame(); // 确保在帧结束时执行
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try
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{
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bool success = CreatePdfDocument(title, content, outputPath);
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string message = success ? $"PDF已保存至: {outputPath}" : "PDF导出失败";
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onComplete?.Invoke(success, message);
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}
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catch (System.Exception ex)
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{
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Debug.LogError($"PDF导出过程中发生错误: {ex.Message}\n{ex.StackTrace}");
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onComplete?.Invoke(false, $"PDF导出错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 创建PDF文档
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/// </summary>
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/// <param name="title">PDF标题</param>
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/// <param name="content">PDF内容</param>
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/// <param name="outputPath">输出路径</param>
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/// <returns>是否成功创建</returns>
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private bool CreatePdfDocument(string title, string content, string outputPath)
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{
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try
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{
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// 确保输出目录存在
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string directory = Path.GetDirectoryName(outputPath);
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if (!Directory.Exists(directory))
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{
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Directory.CreateDirectory(directory);
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}
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// 创建文档
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Document document = new Document(PageSize.A4, margin, margin, margin, margin);
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// 创建PDF writer
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PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(outputPath, FileMode.Create));
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// 打开文档
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document.Open();
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// 添加标题
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if (!string.IsNullOrEmpty(title))
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{
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iTextSharp.text.Font titleFont = SetFont(16);
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if (titleFont == null)
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{
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titleFont = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 16, iTextSharp.text.Font.BOLD);
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}
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Paragraph titleParagraph = new Paragraph(title, titleFont)
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{
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Alignment = Element.ALIGN_CENTER,
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SpacingAfter = 20f
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};
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document.Add(titleParagraph);
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}
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// 添加当前时间戳
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iTextSharp.text.Font timestampFont = SetFont(10);
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if (timestampFont == null)
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{
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timestampFont = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 10, iTextSharp.text.Font.NORMAL);
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}
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Paragraph timestamp = new Paragraph($"生成时间: {DateTime.Now:yyyy-MM-dd HH:mm:ss}", timestampFont)
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{
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Alignment = Element.ALIGN_RIGHT,
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SpacingAfter = 20f
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};
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document.Add(timestamp);
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// 添加内容
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if (!string.IsNullOrEmpty(content))
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{
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iTextSharp.text.Font contentFont = SetFont();
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if (contentFont == null)
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{
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contentFont = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, fontSize, iTextSharp.text.Font.NORMAL);
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}
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// 将换行符转换为段落
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string[] paragraphs = content.Split(new[] { "\n", "\r\n" }, StringSplitOptions.None);
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foreach (string paragraphText in paragraphs)
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{
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if (!string.IsNullOrEmpty(paragraphText.Trim()))
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{
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Paragraph paragraph = new Paragraph(paragraphText, contentFont)
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{
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SpacingAfter = 10f
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};
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document.Add(paragraph);
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}
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else
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{
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// 添加空行
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Paragraph emptyLine = new Paragraph(" ", contentFont);
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document.Add(emptyLine);
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}
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}
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}
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// 添加附件信息（核心修改部分）
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if (attachedFiles.Count > 0)
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{
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iTextSharp.text.Font contentFont = SetFont();
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if (contentFont == null)
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{
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contentFont = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, fontSize, iTextSharp.text.Font.NORMAL);
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}
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document.Add(new Paragraph(" ", contentFont)); // 空行分隔
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iTextSharp.text.Font sectionTitleFont = SetFont(14);
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if (sectionTitleFont == null)
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{
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sectionTitleFont = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 14, iTextSharp.text.Font.BOLD);
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}
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Paragraph attachmentsTitle = new Paragraph("附件列表:", sectionTitleFont)
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{
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SpacingBefore = 20f,
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SpacingAfter = 10f
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};
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document.Add(attachmentsTitle);
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iTextSharp.text.Font attachmentFont = SetFont(12);
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if (attachmentFont == null)
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{
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attachmentFont = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 12, iTextSharp.text.Font.NORMAL);
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}
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for (int i = 0; i < attachedFiles.Count; i++)
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{
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string fullPath = attachedFiles[i];
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string fileName = Path.GetFileName(fullPath);
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string fileSize = FormatFileSize(new FileInfo(fullPath).Length);
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// ======================
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// 纯 Unity 中文路径编码
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// ======================
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string unifiedPath = fullPath.Replace('\\', '/');
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string encodedPath = UnityWebRequest.EscapeURL(unifiedPath);
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encodedPath = encodedPath.Replace("%2F", "/").Replace("%3A", ":");
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string fileUrl = "file:///" + encodedPath;
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// ======================
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// 蓝色下划线链接字体
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// ======================
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iTextSharp.text.Font linkFont = new iTextSharp.text.Font(attachmentFont.BaseFont, 12, iTextSharp.text.Font.UNDERLINE, BaseColor.BLUE);
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Anchor fileLink = new Anchor(fileName, linkFont);
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fileLink.Reference = fileUrl; // 使用编码后的链接
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Paragraph attachmentItem = new Paragraph($"{i + 1}. ", attachmentFont)
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{
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SpacingAfter = 5f,
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IndentationLeft = 20f
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};
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attachmentItem.Add(fileLink);
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attachmentItem.Add(new Chunk($" ({fileSize})", attachmentFont));
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document.Add(attachmentItem);
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}
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}
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// 添加页码
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PdfPageEventHelper pageEvent = new PdfPageEventHandler();
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writer.PageEvent = pageEvent;
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// 关闭文档
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document.Close();
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Debug.Log($"PDF文档已成功创建: {outputPath}");
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return true;
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}
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catch (System.Exception ex)
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{
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Debug.LogError($"创建PDF文档时发生错误: {ex.Message}\n{ex.StackTrace}");
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return false;
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}
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}
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public iTextSharp.text.Font SetFont(float _fontsize = 12)
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{
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try
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{
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// 创建 BaseFont（支持中文）
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string fontPath = Path.Combine(Application.streamingAssetsPath, "songTi.ttf");
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if (File.Exists(fontPath))
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{
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BaseFont baseFont = BaseFont.CreateFont(
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fontPath,
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BaseFont.IDENTITY_H,
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BaseFont.EMBEDDED
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);
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// 创建 iText 字体
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iTextSharp.text.Font chineseFont = new iTextSharp.text.Font(baseFont, _fontsize, iTextSharp.text.Font.NORMAL);
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return chineseFont;
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}
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else
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{
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// 如果指定字体不存在，使用默认字体
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return new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, _fontsize, iTextSharp.text.Font.NORMAL);
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}
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}
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catch
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{
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// 如果出现任何错误，返回默认字体
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return new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, _fontsize, iTextSharp.text.Font.NORMAL);
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}
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}
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/// <summary>
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/// 选择并添加附件
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/// </summary>
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/// <param name="onComplete">选择完成回调</param>
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public void SelectAndAddAttachment(Action<bool, string> onComplete = null)
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{
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FileUploadManager.Instance.SelectAndUploadFile((filePath) =>
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{
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if (!string.IsNullOrEmpty(filePath))
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{
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AddAttachment(filePath);
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onComplete?.Invoke(true, $"附件已添加: {Path.GetFileName(filePath)}");
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}
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else
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{
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onComplete?.Invoke(false, "未选择文件");
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}
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});
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}
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/// <summary>
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/// 格式化文件大小
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/// </summary>
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/// <param name="bytes">字节数</param>
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/// <returns>格式化的文件大小字符串</returns>
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private string FormatFileSize(long bytes)
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{
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string[] sizes = { "B", "KB", "MB", "GB" };
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int order = 0;
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double len = bytes;
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while (len >= 1024 && order < sizes.Length - 1)
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{
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order++;
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len = len / 1024;
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}
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return $"{len:F2} {sizes[order]}";
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}
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/// <summary>
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/// 选择保存路径并导出PDF
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/// </summary>
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/// <param name="title">PDF标题</param>
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/// <param name="content">PDF内容</param>
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/// <param name="onComplete">完成回调</param>
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public void SelectAndExportPdf(string title, string content, Action<bool, string> onComplete = null)
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{
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#if UNITY_EDITOR || UNITY_STANDALONE_WIN
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string defaultFileName = $"{title}_{DateTime.Now:yyyyMMdd_HHmmss}.pdf";
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string outputPath = EditorUtility.SaveFilePanel("保存PDF文件", "", defaultFileName, "pdf");
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if (!string.IsNullOrEmpty(outputPath))
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{
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ExportPdf(title, content, outputPath, onComplete);
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}
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else
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{
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onComplete?.Invoke(false, "未选择保存路径");
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}
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#else
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// 对于其他平台，使用默认路径或应用持久化数据路径
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string fileName = $"{title}_{DateTime.Now:yyyyMMdd_HHmmss}.pdf";
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string outputPath = Path.Combine(Application.persistentDataPath, fileName);
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ExportPdf(title, content, outputPath, onComplete);
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#endif
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}
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}
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/// <summary>
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/// PDF页面事件处理器（用于添加页码）
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/// </summary>
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public class PdfPageEventHandler : PdfPageEventHelper
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{
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public override void OnEndPage(PdfWriter writer, Document document)
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{
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base.OnEndPage(writer, document);
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PdfContentByte canvas = writer.DirectContent;
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ColumnText.ShowTextAligned(
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canvas,
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Element.ALIGN_CENTER,
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new Phrase($"第 {writer.PageNumber} 页", new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 8)),
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(document.PageSize.Left + document.PageSize.Right) / 2,
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document.PageSize.Bottom + 15,
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0
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);
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}
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} |