我们有一个Silverstripe项目,它使用silverstripe-wkhtmltopdf模块以PDF格式输出HTML / CSS / Javascript。
像document.write这样的简单Javascript可以工作,但我想使用他们的可视化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>
PDF没有显示任何可视化输出,因此我使用QTBrowser来调试Javascript - 如下所示:Debugging javascript in wkhtmltopdf
我在QTBrowser中遇到的错误是Error: one or more fonts could not be loaded.
来自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
HTML在我看来是正确的,但我不知道QTBrowser的兼容性,或者它与wkhtmltopdf的关系。
有没有人使用wkhtmltopdf输出Google Charts有经验/成功?
答案 0 :(得分:2)
这是一个很好的帖子,它解释了这个主题并向您展示了如何实现它
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>