vxe-pc-ui
Version:
A vue based PC component library
162 lines (161 loc) • 9.6 kB
JavaScript
import XEUtils from 'xe-utils';
const browseObj = XEUtils.browse();
// 打印
let printFrame;
// 默认导出或打印的 HTML 样式
const defaultHtmlStyle = 'body{margin:0;padding:0;color:#000000;font-size:14px;font-family:"Microsoft YaHei",微软雅黑,"MicrosoftJhengHei",华文细黑,STHeiti,MingLiu}body *{-webkit-box-sizing:border-box;box-sizing:border-box}.vxe-table{border-collapse:collapse;text-align:left;border-spacing:0}.vxe-table:not(.is--print){table-layout:fixed}.vxe-table,.vxe-table th,.vxe-table td,.vxe-table td{border-color:#D0D0D0;border-style:solid;border-width:0}.vxe-table.is--print{width:100%}.border--default,.border--full,.border--outer{border-top-width:1px}.border--default,.border--full,.border--outer{border-left-width:1px}.border--outer,.border--default th,.border--default td,.border--full th,.border--full td,.border--outer th,.border--inner th,.border--inner td{border-bottom-width:1px}.border--default,.border--outer,.border--full th,.border--full td{border-right-width:1px}.border--default th,.border--full th,.border--outer th{background-color:#f8f8f9}.vxe-table td>div,.vxe-table th>div{padding:.5em .4em}.col--center{text-align:center}.col--right{text-align:right}.vxe-table:not(.is--print) .col--ellipsis>div{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:break-all}.vxe-table--tree-node{text-align:left}.vxe-table--tree-node-wrapper{position:relative}.vxe-table--tree-icon-wrapper{position:absolute;top:50%;width:1em;height:1em;text-align:center;-webkit-transform:translateY(-50%);transform:translateY(-50%);-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;cursor:pointer}.vxe-table--tree-unfold-icon,.vxe-table--tree-fold-icon{position:absolute;width:0;height:0;border-style:solid;border-width:.5em;border-right-color:transparent;border-bottom-color:transparent}.vxe-table--tree-unfold-icon{left:.3em;top:0;border-left-color:#939599;border-top-color:transparent}.vxe-table--tree-fold-icon{left:0;top:.3em;border-left-color:transparent;border-top-color:#939599}.vxe-table--tree-cell{display:block;padding-left:1.5em}.vxe-table input[type="checkbox"]{margin:0}.vxe-table input[type="checkbox"],.vxe-table input[type="radio"],.vxe-table input[type="checkbox"]+span,.vxe-table input[type="radio"]+span{vertical-align:middle;padding-left:0.4em}';
export function createPrintFrame() {
const frame = document.createElement('iframe');
frame.className = 'vxe-table--print-frame';
return frame;
}
function appendPrintFrame() {
if (!printFrame.parentNode) {
document.body.appendChild(printFrame);
}
}
function afterPrintEvent() {
requestAnimationFrame(removeFrame);
}
function removeFrame() {
if (printFrame) {
if (printFrame.parentNode) {
try {
printFrame.contentDocument.write('');
}
catch (e) { }
printFrame.parentNode.removeChild(printFrame);
}
printFrame = null;
}
}
function getExportBlobByString(str, type) {
return new Blob([str], { type: `text/${type};charset=utf-8;` });
}
const printMargin = 80;
function createHtmlPage(opts, printHtml) {
const { customStyle } = opts;
return [
'<!DOCTYPE html><html>',
'<head>',
'<meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no,minimal-ui">',
`<title>${opts.title}</title>`,
opts._pageBreaks || (opts.pageBreaks && opts.pageBreaks.length) ? '<style media="print">@page {size: auto;margin: 0mm;}</style>' : '',
`<style>.vxe-print-slots{display: none;}.vxe-print-page-break.align--center{text-align:center;}.vxe-print-page-break.align--left{text-align:left;}.vxe-print-page-break.align--right{text-align:right;}.vxe-print-page-break--header-title{font-size:1.8em;text-align:center;line-height:${printMargin}px;}.vxe-print-page-break{page-break-before:always;display:flex;flex-direction:column;height:100vh;overflow:hidden;}.vxe-print-page-break--body{display:flex;flex-direction:row;flex-grow:1;overflow: hidden;}.vxe-print-page-break--left,.vxe-print-page-break--right{flex-shrink:0;width:${printMargin}px;height:100%;}.vxe-print-page-break--header,.vxe-print-page-break--footer{flex-shrink:0;height:${printMargin}px;width:100%;}.vxe-print-page-break--content{flex-grow: 1;overflow: hidden;}.vxe-print-page-break--footer-page-number{line-height:${printMargin}px;text-align:center;}</style>`,
'<style>.vxe-table{white-space:pre;}</style>',
`<style>${defaultHtmlStyle}</style>`,
customStyle ? `<style>${customStyle}</style>` : '',
'</head>',
'<body>',
`${printHtml}`,
'</body>',
'</html>'
].join('');
}
function handlePrint(opts, printHtml = '') {
const { beforeMethod } = opts;
if (beforeMethod) {
printHtml = beforeMethod({ content: printHtml, html: printHtml, options: opts }) || '';
}
printHtml = createHtmlPage(opts, printHtml);
const blob = getExportBlobByString(printHtml, 'html');
return new Promise(resolve => {
if (browseObj.msie) {
removeFrame();
printFrame = createPrintFrame();
appendPrintFrame();
printFrame.contentDocument.write(printHtml);
printFrame.contentDocument.execCommand('print');
setTimeout(() => {
resolve({
status: true
});
}, 300);
}
else {
if (!printFrame) {
printFrame = createPrintFrame();
printFrame.onload = (evnt) => {
if (evnt.target.src) {
evnt.target.contentWindow.onafterprint = afterPrintEvent;
evnt.target.contentWindow.print();
}
resolve({
status: true
});
};
printFrame.onerror = () => {
resolve({
status: false
});
};
}
appendPrintFrame();
printFrame.src = URL.createObjectURL(blob);
}
});
}
function createPageBreak(opts) {
const { title, showPageNumber, align, headerAlign, footerAlign, showAllPageTitle } = opts;
const pageBreaks = opts.pageBreaks || [];
const pageCount = pageBreaks.length;
return pageBreaks.map((item, index) => {
const bodyHtml = item.bodyHtml;
const headerHtml = item.headerHtml || opts.headerHtml;
const footerHtml = item.footerHtml || opts.footerHtml;
const leftHtml = item.leftHtml || opts.leftHtml;
const rightHtml = item.rightHtml || opts.rightHtml;
const currentPage = index + 1;
const params = {
currentPage,
pageCount
};
return [
`<div class="${['vxe-print-page-break', align ? `align--${align}` : ''].join(' ')}">`,
`<div class="${['vxe-print-page-break--header', headerAlign ? `align--${headerAlign}` : ''].join(' ')}">`,
headerHtml
? `${XEUtils.isFunction(headerHtml) ? headerHtml(params) : (headerHtml || '')}`
: (title && (showAllPageTitle || !index) ? `<div class="vxe-print-page-break--header-title">${title || ''}</div>` : ''),
'</div>',
'<div class="vxe-print-page-break--body">',
`<div class="vxe-print-page-break--left">${XEUtils.isFunction(leftHtml) ? leftHtml(params) : (leftHtml || '')}</div>`,
`<div class="vxe-print-page-break--content">${XEUtils.isFunction(bodyHtml) ? bodyHtml(params) : (bodyHtml || '')}</div>`,
`<div class="vxe-print-page-break--right">${XEUtils.isFunction(rightHtml) ? rightHtml(params) : (rightHtml || '')}</div>`,
'</div>',
`<div class="${['vxe-print-page-break--footer', footerAlign ? `align--${footerAlign}` : ''].join(' ')}">`,
footerHtml
? `${XEUtils.isFunction(footerHtml) ? footerHtml(params) : (footerHtml || '')}`
: (showPageNumber ? `<div class="vxe-print-page-break--footer-page-number">${currentPage}/${pageCount}</div>` : ''),
'</div>',
'</div>'
].join('');
}).join('');
}
export const printHtml = (options) => {
const opts = Object.assign({ _pageBreaks: false, customLayout: true }, options);
if (opts.sheetName) {
opts.title = opts.title || opts.sheetName;
}
if (opts.style) {
opts.customStyle = opts.customStyle || opts.style;
}
if (opts.beforePrintMethod) {
opts.beforeMethod = opts.beforeMethod || opts.beforePrintMethod;
}
if (opts.pageBreaks && opts.pageBreaks.length) {
return handlePrint(opts, createPageBreak(opts));
}
const printHtml = opts.html || opts.content;
return handlePrint(opts, printHtml);
};
export function assemblePageBreak($xePageBreak, elem, pageBreakConfig) {
const staticPageBreaks = $xePageBreak.reactData.staticPageBreaks;
const parentElem = elem.parentNode;
if (parentElem && staticPageBreaks) {
staticPageBreaks.splice(XEUtils.arrayIndexOf(parentElem.children, elem), 0, pageBreakConfig);
$xePageBreak.reactData.staticPageBreaks = staticPageBreaks.slice(0);
}
}
export function destroyPageBreak($xePageBreak, pageBreakConfig) {
$xePageBreak.reactData.staticPageBreaks = $xePageBreak.reactData.staticPageBreaks.filter(item => item.id !== pageBreakConfig.id);
}