[英]Using wkhtmltopdf to output Google Charts to PDF
We have a Silverstripe project that uses the silverstripe-wkhtmltopdf module to output HTML/CSS/Javascript as PDF. 我们有一个Silverstripe项目,该项目使用silverstripe-wkhtmltopdf模块将HTML / CSS / Javascript输出为PDF。
Simple Javascript like document.write works but I want to output Google Charts using their visualisation API: 像document.write这样的简单Javascript可以工作,但是我想使用其可视化API输出Google Charts:
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script>
google.load('visualization', '1', {packages: ['corechart', 'bar']});
</script>
The PDF wasn't showing any of the visualisation output so I used QTBrowser to debug the Javascript - as suggested here: Debugging javascript in wkhtmltopdf PDF没有显示任何可视化输出,因此我使用QTBrowser调试Javascript-如此处建议: 在wkhtmltopdf中调试javascript
The error I'm getting in QTBrowser is: Error: one or more fonts could not be loaded.
我在QTBrowser中遇到的
Error: one or more fonts could not be loaded.
是: Error: one or more fonts could not be loaded.
from https://www.google.com/uds/api/visualization/1.0/b5ac9efed10eef460d14e653d05f5fbf/webfontloader,dygraph,format+en,default+en,ui+en,bar+en,corechart+en.I.js:737 从https://www.google.com/uds/api/visualization/1.0/b5ac9efed10eef460d14e653d05f5fbf/webfontloader,dygraph,format+en,default+en,ui+en,bar+en,corechart+en.I.js:737
The HTML looks correct at my end but I don't know the compatibility of QTBrowser, or how it relates to wkhtmltopdf. HTML在我看来似乎是正确的,但是我不知道QTBrowser的兼容性,或者它与wkhtmltopdf的关系。
Has anyone had any experience/ success with using wkhtmltopdf to output Google Charts? 有没有人使用wkhtmltopdf输出Google图表有任何经验/成功?
Here's a good post which explains this topic and shows you how to achieve it 这是一篇很好的文章,解释了此主题并向您展示了如何实现
http://codingexplained.com/coding/php/using-google-visualization-with-wkhtmltopdf http://codingexplained.com/coding/php/using-google-visualization-with-wkhtmltopdf
<script type="text/javascript">
function init() {
google.load("visualization", "1.1", { packages:["corechart"], callback: 'drawCharts' });
}
function drawCharts() {
drawAccountImpressions('chart-account-impressions');
}
function drawAccountImpressions(containerId) {
var data = google.visualization.arrayToDataTable([
['Day', 'This month', 'Last month'],
['01', 1000, 400],
['05', 800, 700],
['09', 1000, 700],
['13', 1000, 400],
['17', 660, 550],
['21', 660, 500],
['23', 750, 700],
['27', 800, 900]
]);
var options = {
width: 700,
height: 400,
hAxis: { title: 'Day', titleTextStyle: { color: '#333' } },
vAxis: { minValue: 0 },
curveType: 'function',
chartArea: {
top: 30,
left: 50,
height: '70%',
width: '100%'
},
legend: 'bottom'
};
var chart = new google.visualization.LineChart(document.getElementById(containerId));
chart.draw(data, options);
}
</script>
</head>
<body onload="init()">
<div id="chart-account-impressions"></div>
</body>
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