import html2Canvas from "html2canvas"
import JsPDF from "jspdf"
export default {
    install(Vue, options) {
        Vue.prototype.getPdf = function (id, title) {
            var title = title
            html2Canvas(document.querySelector(id), {
                allowTaint: true
            }).then(function (canvas) {
                let contentWidth = canvas.width
                let contentHeight = canvas.height
                let pageHeight = contentWidth / 592.28 * 841.89
                let leftHeight = contentHeight
                let position = 0
                let imgWidth = 595.28
                let imgHeight = 592.28 / contentWidth * contentHeight
                let pageData = canvas.toDataURL("image / jpeg", 1.0)
                let PDF = new JsPDF("", "pt", "a4")
                if (leftHeight < pageHeight) {
                    PDF.addImage(pageData, "JPEG", 0, 0, imgWidth, imgHeight)
                } else {
                    while (leftHeight > 0) {
                        PDF.addImage(pageData, "JPEG", 0, position, imgWidth, imgHeight)
                        leftHeight -= pageHeight
                        position -= 841.89
                        if (leftHeight > 0) {
                            PDF.addPage()
                        }
                    }
                }
                PDF.save(title + ".pdf")
        }
)
    }
}
}