publiclab/mapknitter
Try to generate PDF map of all images client-side using jsPDF
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#219 建立於 2016年4月25日
exportinghelp wanted
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描述
Now that we can export full-res images one by one, we should try to combine them into a PDF for download/printing. The syntax here looks pretty easy:
https://mrrio.github.io/jsPDF/
// You'll need to make your image into a Data URL
// Use http://dataurl.net/#dataurlmaker
var imgData = 'DATAURL';
var doc = new jsPDF();
doc.setFontSize(40);
doc.text(35, 25, "Map title");
doc.setFontSize(20);
doc.text(35, 75, "Map title");
doc.addImage(imgData, 'JPEG', 15, 40, 180, 180);
We could add a method similarly to our per-image download, since we already have calculated pixel sizes for image generation here: https://github.com/publiclab/mapknitter/blob/master/app/assets/javascripts/mapknitter/Map.js#L50-L90