如何在打印机中打印图像文件 [英] How to print a image file in printer
问题描述
我编写了一个简单的程序来在JSF中打印图像....
I write a simple program to print a image in JSF....
我有一个图像（sampleImage.png）..我已经将我的电脑连接到打印机....
I have one image (sampleImage.png).. Already i connected my pc to printer....
手动打开图像并选择打印选项，然后我从打印机获得图像....
Manually i open the image and select print option , then i got image from printer....
现在我想要使用javascript打印图片....
Now i want print image using javascript....
文件名：imagePrint.jsp
File name : imagePrint.jsp
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Printer</title>
<script type="text/javascript">
function printImage()
{
// Here i want write a script for print image
}
</script>
<body>
<h:form id="fileViewerForm">
<rich:panel>
<f:facet name="header">
<h:outputText value="Printer"/>
</f:facet>
<h:commandButton value="PrintImage" onclick="printImage();"/>
<rich:panel id="imageViewerPanel">
<h:graphicImage id="imageViewer" value="sampleImage.png" url="sampleImage.png"/>
</rich:panel>
</rich:panel>
</h:form>
</body>
</html>
帮我解决这个问题..
help me about this..
以下脚本将textarea打印到打印机中.....
所以我需要打印图像
The following script for print the textarea into the printer..... So i need to print the image
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();
}
推荐答案
您将收到图片ID
h：form和h：graphicImage标签id
You will receive image id using both h:form and h:graphicImage tag id's
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();
}
JSF代码是：
<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>
适用于FireFox 3.0。 18。
It works on FireFox 3.0.18.
By，
Eswara Moorthy，NEC。
By,
Eswara Moorthy, NEC.
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