68 lines
2.2 KiB
C#
68 lines
2.2 KiB
C#
using Aspose.Pdf;
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using Aspose.Pdf.Devices;
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using System.Collections;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using UnityEngine;
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/// <summary>
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/// PDF转图片
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/// </summary>
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public class LoadPDFTest : MonoBehaviour
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{
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public static LoadPDFTest Instance;
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public GameObject imageprefab;
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public Transform content;
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private void Start()
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{
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Instance = this;
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}
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/// <summary>
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/// 加载PDF
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/// </summary>
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public void LoadPDFGo(string path)
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{
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//清理content下的旧物体
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for (int i = 0; i < content.childCount; i++)
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{
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Destroy(content.GetChild(i).gameObject);
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}
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Document pdf = new Document(path);
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for (int i = 1; i <= pdf.Pages.Count; i++)
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{
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//PngDevice pngDevice = new PngDevice((int)pdf.Pages[i].PageInfo.Width,(int)pdf.Pages[i].PageInfo.Height);
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PngDevice pngDevice = new PngDevice((int)pdf.Pages[i].PageInfo.Width*2,(int)pdf.Pages[i].PageInfo.Height*2);
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//声明内存流，将图片转换为内存流，再由流转换为byte数组，然后用texture2d加载byte数组
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using (MemoryStream ms = new MemoryStream())
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{
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pngDevice.Process(pdf.Pages[i], ms);
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byte[] buff = new byte[ms.Length];
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ms.Seek(0, SeekOrigin.Begin);
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ms.Read(buff, 0, (int)ms.Length);
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//注意这个iamge的命名空间为system.drawing不是unity.ui,这个图片的目的是提供图片的宽高
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System.Drawing.Image sizeImage = System.Drawing.Image.FromStream(ms);
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Texture2D texture2D = new Texture2D(sizeImage.Width, sizeImage.Height);
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texture2D.LoadImage(buff);
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UnityEngine.UI.Image image = Instantiate(imageprefab, content).GetComponent<UnityEngine.UI.Image>();
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//根据转化出来的图片的大小设置unity image的大小
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image.rectTransform.sizeDelta = new Vector2(sizeImage.Width, sizeImage.Height);
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//用texture2d为精灵赋值
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image.sprite = Sprite.Create(texture2D, new Rect(0, 0, texture2D.width, texture2D.height), Vector2.zero);
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}
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}
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}
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}
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