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Add support for page-breaks to be inserted before elements that would otherwise intersect them #118

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Add support for page-breaks to be inserted before elements that would otherwise intersect them #118

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19 changes: 18 additions & 1 deletion src/plugin/pagebreaks.js
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Original file line number Diff line number Diff line change
Expand Up @@ -14,5 +14,22 @@ Worker.prototype.toContainer = function toContainer() {
var clientRect = el.getBoundingClientRect();
el.style.height = pxPageHeight - (clientRect.top % pxPageHeight) + 'px';
}, this);

// Shim some padding before elements that would otherwise intersect a page break
pageBreaks = this.prop.container.querySelectorAll('.html2pdf__avoid-page-break');
Array.prototype.forEach.call(pageBreaks, function pageBreak_loop(el) {
var clientRect = el.getBoundingClientRect();
var startPage = Math.floor(clientRect.top / pxPageHeight);
var endPage = Math.floor(clientRect.bottom / pxPageHeight);
if (endPage > startPage && Math.abs(endPage - startPage) === 1) {
// the element is straddling a single page break.
// insert a padding div to push the element to the next page.
var currentDocHeight = (startPage + 1) * pxPageHeight;
var pad = document.createElement('div');
pad.style.display = 'block';
pad.style.height = currentDocHeight - clientRect.top % currentDocHeight + 'px';
el.parentNode.insertBefore(pad, el);
}
}, this);
});
};
};