Javascript 如何在打印机中打印图像文件
我写了一个简单的程序来打印JSF中的图像Javascript 如何在打印机中打印图像文件,javascript,image,printing,Javascript,Image,Printing,我写了一个简单的程序来打印JSF中的图像 <h:commandButton value="Print" onclick="printImage();"/><br> <rich:panel id="imageViewerPanel"> <h:graphicImage id="imageViewer" url="sampleImage.png"
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
打印机
函数printImage（）
{
//这里我想写一个打印图像的脚本
}
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
function printText()
{
alert("Text Area print to printer start....");
var textElem = document.getElementById("fileViewerForm:textAreaGrid1").innerHTML;
alert("Text Area Content : " + textElem);
if(textElem.toLowerCase().indexOf("<textarea", 0) != -1)
{
textElem = document.getElementById("fileViewerForm:fileContent1").value;
var regExp = /\n/gi;
textElem = textElem.replace(regExp,'<br>');
}
popup = window.open('','popup','toolbar=no,menubar=no,width=200,height=150');
popup.document.open();
popup.document.write("<html><head></head><body onload='print()'>");
popup.document.write(textElem);
popup.document.write("</body></html>");
popup.document.close();
}
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
函数printText（）
{
警报（“文本区打印到打印机启动…）；
var textElem=document.getElementById（“FileViewPerform:textAreaGrid1”）.innerHTML；
警报（“文本区域内容：“+textElem”）；
如果（textElem.toLowerCase（）.indexOf（“您将无法使用javascript打印，因为您无法从浏览器管理硬件设备并在那里执行它。您可以将其发送到浏览器
window.print();
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
由浏览器决定做什么
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
打印页面的特定部分时，考虑打印样式表。使用<代码>媒体< /代码>属性允许您创建特定文件的仅打印样式。
<link rel="stylesheet" href="/assets/css/print.css" media="print" />
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
您将使用这两种方法接收图像id
h:form和h:graphicImage标记id
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
Java脚本是：
function printImage()
{
var iamgeId = document.getElementById('fileViewerForm:imageViewer');
var imagObject = new Image();
imagObject = iamgeId;
var originalImage = '<img id="imageViewer" src="'+imagObject.src+'"
height="'+imagObject.height+'"
width="'+imagObject.width+'" />';
popup = window.open('','popup','toolbar=no,menubar=no,width=200,height=150');
popup.document.open();
popup.document.write("<html><head></head><body onload='print()'>");
popup.document.write(originalImage);
popup.document.write("</body></html>");
popup.document.close();
}
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
函数printImage（）
{
var iamgeId=document.getElementById（'FileViewPerform:imageViewer'）；
var imagObject=新图像（）；
imagObject=iamgeId；
var originalImage=''；
popup=window.open（“”，'popup'，'toolbar=no，menubar=no，width=200，height=150'）；
popup.document.open（）；
popup.document.write（“”）；
弹出。文档。写入（原始图像）；
popup.document.write（“”）；
popup.document.close（）；
}
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>
NEC Eswara Moorthy。感谢您的回复…现在您可能会再次看到我的帖子…我已经为打印文本区域内容编写了脚本…您好，此方法用于打印整个窗口…但我只需要打印特定图像…例如，在我的页面中有徽标…所以我只需要使用徽标，而不是页面的全部内容。。。我是新来的。我不明白这个…我在css文件中写了什么内容。。。
<h:commandButton value="Print" onclick="printImage();"/><br>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" url="sampleImage.png"
value="sampleImage.png" width="200"
height="200" />
</rich:panel>
</h:panelGrid>