Unity调用打印机打印图片

Z时代
2024-01-10
分类：综合

本文实例为大家分享了Unity打印机打印图片的具体代码，供大家参考，具体内容如下

1、调用打印机首先就是要配置好打印机

就是电脑跟打印机已经连接好，有默认的打印机可以启动使用

2、调用方式

（1）使用外部第三方软件exe

代码如下:(就两句)


string path = Application.dataPath + @"\Textures\002.png";
  System.Diagnostics.Process.Start("mspaint.exe", path);//调用第三方应用去打印(其中path是要打印图片的路径，而mspaint.exe是调用Windows中的画板，然后从画板里启用打印功能)

（2）使用win自带软件

这个需要下载一个应用(应用会放在我的博客下载文件中名字是PrintImage.exe)

然后直接上代码：


public void Test()
  {
    string path = Application.dataPath + @"\Textures\002.png,0,0,750,400";//从纸张的0. 0点，将图像调整为750×350点（计算：150mm／28.346 px/cm＝529点，100mm／28.346 pm／cm＝352点） 图片路径
    string exepath = Application.streamingAssetsPath + @"\PrintImage.exe";//这个是需要下载的应用直接放到电脑上就行(调用打印机打印图片应用的路径)
    ProcessStartInfo info = new ProcessStartInfo(exepath);//指定启动进程时使用的一组值
    info.Arguments = path;//获取或设置启动应用程序时要使用的一组命令行自变量
    using (Process p=new Process())
    {
      p.StartInfo = info;
      p.Start();
    }
  }

（3）自己进行打印


/// <summary>
  /// 打印
  /// </summary>
  public void PrintFile()
  {
    PrintDocument pri = new PrintDocument();
    pri.PrintPage += Printpagetest;
    pri.Print();
  }
  private void Printpagetest(object sender, PrintPageEventArgs e)
  {
    try
    {
      System.Drawing.Image image = System.Drawing.Image.FromFile(printPath);
      System.Drawing.Graphics g = e.Graphics;
      g.TranslateTransform(_4AHeight, 0);
      g.RotateTransform(90);
      g.DrawImage(image, 0, 0, _4AWidth, _4AHeight);
    }
    catch (Exception ee)
    {
      Debug.LogError(ee.Message);
    }
  }

(这里的第三种我还未进行测试，如出现错误无法实现请指正)

这里我选择的是第二种，1不好实现静默，3太麻烦，2使用是后台调用命令行

3、颜色问题

同时这里本人还找到了有博主自己写的调用打印机方法

项目中需要用到调用打印机打印图片，原本觉得会很复杂，结果一搜索发现Assetstore有相应的插件。在网上找到别人分享的插件，完美的实现了功能，所以现在也来分享一下（因为想看到具体实现，所以用工具反编译了DLL，原本插件是直接导入就可以的）。


using System;
using System.Diagnostics;
using System.Drawing.Printing;
using System.IO;
using UnityEngine;
namespace LCPrinter
{
  public static class Print
  {
    public static void PrintTexture(byte[] texture2DBytes, int numCopies, string printerName)
    {
      if (texture2DBytes == null)
      {
        UnityEngine.Debug.LogWarning("LCPrinter: Texture is empty.");
        return;
      }
      PrinterSettings printerSettings = new PrinterSettings();
      if (printerName == null || printerName.Equals(""))
      {
        printerName = printerSettings.PrinterName;
        UnityEngine.Debug.Log("LCPrinter: Printing to default printer (" + printerName + ").");
      }
      string str = string.Concat(new string[]
      {
        DateTime.Now.Year.ToString(),
        "-",
        DateTime.Now.Month.ToString(),
        "-",
        DateTime.Now.Day.ToString(),
        "-",
        DateTime.Now.Hour.ToString(),
        "-",
        DateTime.Now.Minute.ToString(),
        "-",
        DateTime.Now.Second.ToString(),
        "-",
        DateTime.Now.Millisecond.ToString()
      });
      string text = (Application.persistentDataPath + "\\LCPrinterFiletmp_" + str + ".png").Replace("/", "\\");
      UnityEngine.Debug.Log("LCPrinter: Temporary Path - " + text);
      File.WriteAllBytes(text, texture2DBytes);
      Print.PrintCMD(text, numCopies, printerName);
    }
    public static void PrintTextureByPath(string path, int numCopies, string printerName)
    {
      PrinterSettings printerSettings = new PrinterSettings();
      if (printerName == null || printerName.Equals(""))
      {
        printerName = printerSettings.PrinterName;
        UnityEngine.Debug.Log("LCPrinter: Printing to default printer (" + printerName + ").");
      }
      Print.PrintCMD(path, numCopies, printerName);
    }
    private static void PrintCMD(string path, int numCopies, string printerName)
    {
      Process process = new Process();
      try
      {
        for (int i = 0; i < numCopies; i++)
        {
          process.StartInfo.FileName = "rundll32";
          process.StartInfo.Arguments = string.Concat(new string[]
          {
            "C:\\WINDOWS\\system32\\shimgvw.dll,ImageView_PrintTo \"",
            path,
            "\" \"",
            printerName,
            "\""
          });
          process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
          process.StartInfo.UseShellExecute = true;
          process.Start();
        }
      }
      catch (Exception arg)
      {
        UnityEngine.Debug.LogWarning("LCPrinter: " + arg);
      }
      finally
      {
        process.Close();
        UnityEngine.Debug.Log("LCPrinter: Texture printing.");
      }
    }
  }
}

这是实现功能的源码。调用方法如下：


using UnityEngine;
using System.Collections;
using System.Diagnostics;
using System;
using System.IO;
using LCPrinter;
using UnityEngine.UI;
public class LCExampleScript : MonoBehaviour {
  public Texture2D texture2D;
  public string printerName = "";
  public int copies = 1;
  public InputField inputField;
  public void printSmileButton()
  {
    Print.PrintTexture(texture2D.EncodeToPNG(), copies, printerName);//打印一张编辑器中的图片
  }
  public void printByPathButton()
  {
    Print.PrintTextureByPath("D:\\pic.png", copies, printerName);//打印一张存在指定路径的图片
  }
}