[英]Generating a pdf that preserves styling of the HTML page with jsPDF
我正在嘗試創建一個按鈕,它將開始自動下載頁面的PDF,因為它看起來與sass樣式。 然而,我嘗試的一切都以造型混亂而告終。
這是頁面(這是一個有幾種不同內容類型的測試站點)
但PDF看起來像這樣:
我正在拉jspdf.debug.js
並在我的頁面中有以下HTML按鈕+腳本:
<div id="bypass"> <!-- keeps button from showing in PDF -->
<button id="pdf-new" style="margin: 50px;"><a href="javascript:demoFromHTML()" class="button" style="color: black;">Generate PDF</a></button>
</div>
<script>
function demoFromHTML() {
var pdf = new jsPDF('p', 'pt', 'letter');
// source can be HTML-formatted string, or a reference
// to an actual DOM element from which the text will be scraped.
source = $('#content')[0];
// we support special element handlers. Register them with jQuery-style
// ID selector for either ID or node name. ("#iAmID", "div", "span" etc.)
// There is no support for any other type of selectors
// (class, of compound) at this time.
specialElementHandlers = {
// element with id of "bypass" - jQuery style selector
'#bypass': function (element, renderer) {
// true = "handled elsewhere, bypass text extraction"
return true
}
};
margins = {
top: 80,
bottom: 60,
left: 40,
width: 522
};
// all coords and widths are in jsPDF instance's declared units
// 'inches' in this case
pdf.fromHTML(
source, // HTML string or DOM elem ref.
margins.left, // x coord
margins.top, { // y coord
'width': margins.width, // max width of content on PDF
'elementHandlers': specialElementHandlers
},
function (dispose) {
// dispose: object with X, Y of the last line add to the PDF
// this allow the insertion of new lines after html
pdf.save('Test.pdf');
}, margins);
}
</script>
如何使樣式從html到pdf保持一致?
我最終通過使用html2canvas和jsPDF來實現這一點 。
我的按鈕通過html2canvas選項隱藏自pdf:
<div data-html2canvas-ignore="true">
<button id="pdf-new"><a href="javascript:demoFromHTML()" class="button" style="color: black;">Generate PDF</a></button>
</div>
和html頁面底部的腳本
<script>
function demoFromHTML() {
var pdf = new jsPDF('p', 'pt', 'letter');
var options = {
background: '#fff' //background is transparent if you don't set it, which turns it black for some reason.
};
pdf.addHTML($('#content')[0], options, function () {
pdf.save('Test.pdf');
});
}
</script>
同樣在html2canvas.js中我改變了:
_html2canvas.Util.isTransparent = function(backgroundColor) {
return (backgroundColor === "transparent" || backgroundColor === "rgba(0, 0, 0, 0)");
};
為此,為了避免透明到黑色的背景
_html2canvas.Util.isTransparent = function(backgroundColor) {
return (backgroundColor === "transparent" || backgroundColor === "rgba(0, 0, 0, 0)" || backgroundColor === undefined);
};
希望有人幫助!
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