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Unity调用打印机打印图片

2020-01-23 20:47:05
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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  }}

由于原本插件是添加好引用的,反编译之后缺少了引用,所以要去统一的安装路径E:/ unity5.3.2 /统一/编辑/数据/单声道/ lib中/单/ 2.0(这是我本地安装的路径)中找到System.Drawing.dll程序程序放入项目中的插件下。如在VS中报错没有添加引用,则要对项目添加引用

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持武林网。

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