155 lines
7.5 KiB
JavaScript
155 lines
7.5 KiB
JavaScript
// 动态创建水印元素的封装函数
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export function watermark(settings, domId) {
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const watermarkDom = document.getElementById(domId)
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// 默认设置
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const defaultSettings = {
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watermark_txt: '',
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watermark_x: 20, // 水印起始位置x轴坐标
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watermark_y: 20, // 水印起始位置Y轴坐标
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watermark_rows: 20, // 水印行数
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watermark_cols: 20, // 水印列数
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watermark_x_space: 100, // 水印x轴间隔
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watermark_y_space: 50, // 水印y轴间隔
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watermark_color: '#aaa', // 水印字体颜色
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watermark_alpha: 0.4, // 水印透明度
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watermark_fontsize: '15px', // 水印字体大小
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watermark_font: '微软雅黑', // 水印字体
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watermark_width: 210, // 水印宽度
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watermark_height: 80, // 水印长度
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watermark_angle: 20 // 水印倾斜度数
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}
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// 根据函数的入参调整设置
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if (settings && typeof settings === 'object') {
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const src = settings || {}
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for (const key in src) {
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if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key]) {
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continue
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} else if (src[key]) defaultSettings[key] = src[key]
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}
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}
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// 创建虚拟节点对象，在该节点对象中可以放元素，最后只需在页面中添加该节点对象即可。可提高性能
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const oTemp = document.createElement('p')
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// 获取页面最大宽度
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let page_width = watermarkDom.clientWidth
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const cutWidth = page_width * 0.0150
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page_width = page_width - cutWidth
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// 获取页面最大高度
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let page_height = watermarkDom.clientHeight - 56
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page_height = page_height < 400 ? 400 : page_height
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// page_height = Math.max(page_height, window.innerHeight - 30)
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// 如果将水印列数设置为0，或水印列数设置过大，超过页面最大宽度，则重新计算水印列数和水印x轴间隔
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if (defaultSettings.watermark_cols === 0 || (parseInt(defaultSettings.watermark_x + defaultSettings.watermark_width * defaultSettings.watermark_cols + defaultSettings.watermark_x_space * (defaultSettings.watermark_cols - 1)) > page_width)) {
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defaultSettings.watermark_cols = parseInt((page_width - defaultSettings.watermark_x + defaultSettings.watermark_x_space) / (defaultSettings.watermark_width + defaultSettings.watermark_x_space))
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defaultSettings.watermark_x_space = parseInt((page_width - defaultSettings.watermark_x - defaultSettings.watermark_width * defaultSettings.watermark_cols) / (defaultSettings.watermark_cols - 1))
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}
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// 如果将水印行数设置为0，或水印行数设置过大，超过页面最大长度，则重新计算水印行数和水印y轴间隔
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if (defaultSettings.watermark_rows === 0 || (parseInt(defaultSettings.watermark_y + defaultSettings.watermark_height * defaultSettings.watermark_rows + defaultSettings.watermark_y_space * (defaultSettings.watermark_rows - 1)) > page_height)) {
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defaultSettings.watermark_rows = parseInt((defaultSettings.watermark_y_space + page_height - defaultSettings.watermark_y) / (defaultSettings.watermark_height + defaultSettings.watermark_y_space))
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defaultSettings.watermark_y_space = parseInt(((page_height - defaultSettings.watermark_y) - defaultSettings.watermark_height * defaultSettings.watermark_rows) / (defaultSettings.watermark_rows - 1))
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}
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defaultSettings.watermark_rows = defaultSettings.watermark_rows < 2 ? 2 : defaultSettings.watermark_rows
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defaultSettings.watermark_cols = defaultSettings.watermark_cols < 2 ? 2 : defaultSettings.watermark_cols
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let x
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let y
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for (let i = 0; i < defaultSettings.watermark_rows; i++) {
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y = defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i
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for (let j = 0; j < defaultSettings.watermark_cols; j++) {
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x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j
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const mask_div = document.createElement('div')
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mask_div.id = 'mask_div' + i + j
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mask_div.className = 'mask_div'
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mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt))
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// 设置水印div倾斜显示
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mask_div.style.webkitTransform = 'rotate(-' + defaultSettings.watermark_angle + 'deg)'
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mask_div.style.MozTransform = 'rotate(-' + defaultSettings.watermark_angle + 'deg)'
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mask_div.style.msTransform = 'rotate(-' + defaultSettings.watermark_angle + 'deg)'
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mask_div.style.OTransform = 'rotate(-' + defaultSettings.watermark_angle + 'deg)'
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mask_div.style.transform = 'rotate(-' + defaultSettings.watermark_angle + 'deg)'
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mask_div.style.visibility = ''
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mask_div.style.position = 'absolute'
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mask_div.style.left = x + 'px'
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mask_div.style.top = y + 'px'
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mask_div.style.overflow = 'hidden'
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mask_div.style.zIndex = '9999'
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// 让水印不遮挡页面的点击事件
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mask_div.style.pointerEvents = 'none'
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mask_div.style.opacity = defaultSettings.watermark_alpha
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mask_div.style.fontSize = defaultSettings.watermark_fontsize
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mask_div.style.fontFamily = defaultSettings.watermark_font
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mask_div.style.color = defaultSettings.watermark_color
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mask_div.style.textAlign = 'center'
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mask_div.style.width = defaultSettings.watermark_width + 'px'
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mask_div.style.height = defaultSettings.watermark_height + 'px'
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mask_div.style.display = 'block'
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oTemp.appendChild(mask_div)
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}
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}
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oTemp.setAttribute('id', 'de-watermark-server')
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watermarkDom.appendChild(oTemp)
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}
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export function getNow() {
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const d = new Date()
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const year = d.getFullYear()
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const month = change(d.getMonth() + 1)
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const day = change(d.getDate())
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const hour = change(d.getHours())
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const minute = change(d.getMinutes())
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function change(t) {
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if (t < 10) {
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return '0' + t
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} else {
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return t
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}
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}
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const time = year + '-' + month + '-' + day + ' ' + hour + ':' + minute
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return time
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}
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export function activeWatermark(watermarkForm, userLoginInfo, domId, canvasId, watermarkOpen) {
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// 清理历史水印
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const historyWatermarkDom = document.getElementById('de-watermark-server')
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if (historyWatermarkDom) {
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historyWatermarkDom.remove()
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}
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if (!(canvasId === 'canvas-main' && ((watermarkForm.enable && !watermarkForm.enablePanelCustom) ||
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(watermarkForm.enable && watermarkOpen)))) {
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return
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}
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let watermark_txt
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let watermark_width = 120
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if (watermarkForm.type === 'custom') {
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watermark_txt = watermarkForm.content
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watermark_txt = watermark_txt.replaceAll('${ip}', userLoginInfo.ip)
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watermark_txt = watermark_txt.replaceAll('${userName}', userLoginInfo.userInfo.userName)
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watermark_txt = watermark_txt.replaceAll('${nickName}', userLoginInfo.userInfo.nickName)
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watermark_txt = watermark_txt.replaceAll('${time}', getNow())
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watermark_width = watermark_txt.length * watermarkForm.watermark_fontsize * 0.75
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watermark_width = watermark_width > 350 ? 350 : watermark_width
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} else if (watermarkForm.type === 'nickName') {
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watermark_txt = userLoginInfo.userInfo.nickName
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} else if (watermarkForm.type === 'ip') {
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watermark_txt = userLoginInfo.ip
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watermark_width = 150
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} else if (watermarkForm.type === 'time') {
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watermark_txt = getNow()
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watermark_width = 200
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} else {
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watermark_txt = userLoginInfo.userInfo.userName
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}
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const settings = {
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watermark_txt: watermark_txt,
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watermark_width: watermark_width,
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watermark_color: watermarkForm.watermark_color,
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watermark_x_space: watermarkForm.watermark_x_space,
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watermark_y_space: watermarkForm.watermark_y_space,
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watermark_fontsize: watermarkForm.watermark_fontsize + 'px'
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}
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watermark(settings, domId)
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}
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export default { watermark, getNow, activeWatermark }
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