我一直在努力创建功能,让我可以打印我的fabricjs画布。我没有运气就试过mentioned here方法。我能够进入打印对话框,但是除了标题和页面信息之外它是空白的。有人能指出我正确的方向吗?
我目前正在使用:
// Trying to print
function printCanvas()
{
var dataUrl = document.getElementById('c').toDataURL(); //attempt to save base64 string to server using this var
var windowContent = '<!DOCTYPE html>';
windowContent += '<html>'
windowContent += '<head><title>Print canvas</title></head>';
windowContent += '<body>'
windowContent += '<img src="' + dataUrl + '">';
windowContent += '</body>';
windowContent += '</html>';
var printWin = window.open('','','width=340,height=260');
printWin.document.open();
printWin.document.write(windowContent);
printWin.document.close();
printWin.focus();
printWin.print();
printWin.close();
}
<button onclick="printCanvas()">Print</button>
答案 0 :(得分:2)
加载内容后,您需要执行打印操作。以下代码应该可以使用
function printCanvas() {
var dataUrl = document.getElementById('c').toDataURL(); //attempt to save base64 string to server using this var
var windowContent = '<!DOCTYPE html>';
windowContent += '<html>'
windowContent += '<head><title>Print canvas</title></head>';
windowContent += '<body>'
windowContent += '<img src="' + dataUrl + '" onload=window.print();window.close();>';
windowContent += '</body>';
windowContent += '</html>';
var printWin = window.open('', '', 'width=340,height=260');
printWin.document.open();
printWin.document.write(windowContent);
}