1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | (function() { var D = Flotr.DOM, _ = Flotr._; function getImage (type, canvas, width, height) { // TODO add scaling for w / h var mime = 'image/'+type, data = canvas.toDataURL(mime), image = new Image(); image.src = data; return image; } Flotr.addPlugin('download', { saveImage: function (type, width, height, replaceCanvas) { var image = null; if (Flotr.isIE && Flotr.isIE < 9) { image = '<html><body>'+this.canvas.firstChild.innerHTML+'</body></html>'; return window.open().document.write(image); } if (type !== 'jpeg' && type !== 'png') return; image = getImage(type, this.canvas, width, height); if (_.isElement(image) && replaceCanvas) { this.download.restoreCanvas(); D.hide(this.canvas); D.hide(this.overlay); D.setStyles({position: 'absolute'}); D.insert(this.el, image); this.saveImageElement = image; } else { return window.open(image.src); } }, restoreCanvas: function() { D.show(this.canvas); D.show(this.overlay); if (this.saveImageElement) this.el.removeChild(this.saveImageElement); this.saveImageElement = null; } }); })(); |