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sh-app/scanpages/components/nbd-print-prop.vue
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2026-06-29 17:35:49 +08:00

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<template>
<view>
<u-popup v-model="localVisible" mode="bottom" :height="height" :closeable="true" @close="handleClose">
<view class="print-popup">
<!-- 标题栏 -->
<view class="print-popup__header">
<text class="print-popup__title">标签打印</text>
</view>
<!-- 隐藏画布用于标签绘制 -->
<canvas
:id="canvasId"
:canvas-id="canvasId"
type="2d"
:style="canvasStyles"
/>
<scroll-view scroll-y="true" class="print-popup__body">
<!-- 预览区域 -->
<view class="preview-section" v-if="previewList.length > 0">
<text class="preview-section__title">打印预览</text>
<view class="preview-section__list">
<image
v-for="item in previewList"
:src="item.value"
:key="item.key"
class="preview-img"
mode="widthFix"
/>
</view>
</view>
<!-- 打印机选择 -->
<view class="setting-row">
<text class="setting-row__label">打印机</text>
<view class="setting-row__right">
<picker :value="deviceIndex" :range="deviceList" @change="onDeviceChanged" range-key="name">
<view class="setting-row__picker">
<text
class="setting-row__value"
:class="{ 'setting-row__value--empty': !deviceList[deviceIndex]?.deviceId }"
>
{{ deviceList[deviceIndex]?.name || '未检测到打印机' }}
</text>
<u-icon name="arrow-down" :size="24" color="#999" />
</view>
</picker>
</view>
</view>
<!-- 出纸方向 -->
<view class="setting-row">
<text class="setting-row__label">出纸方向</text>
<view class="setting-row__right">
<picker :value="rotationIndex" :range="rotationList" @change="onRotationChanged" range-key="name">
<view class="setting-row__picker">
<text class="setting-row__value">{{ rotationList[rotationIndex]?.name || '' }}</text>
<u-icon name="arrow-down" :size="24" color="#999" />
</view>
</picker>
</view>
</view>
<!-- 纸张类型 -->
<view class="setting-row">
<text class="setting-row__label">纸张类型</text>
<view class="setting-row__right">
<picker :value="gapIndex" :range="gapList" @change="onGapTypeChanged" range-key="name">
<view class="setting-row__picker">
<text class="setting-row__value">{{ gapList[gapIndex]?.name || '' }}</text>
<u-icon name="arrow-down" :size="24" color="#999" />
</view>
</picker>
</view>
</view>
<!-- 打印浓度 -->
<view class="setting-row">
<text class="setting-row__label">打印浓度</text>
<view class="setting-row__right">
<picker :value="darknessIndex" :range="darknessList" @change="onDarknessChanged" range-key="name">
<view class="setting-row__picker">
<text class="setting-row__value">{{ darknessList[darknessIndex]?.name || '' }}</text>
<u-icon name="arrow-down" :size="24" color="#999" />
</view>
</picker>
</view>
</view>
<!-- 打印速度 -->
<view class="setting-row">
<text class="setting-row__label">打印速度</text>
<view class="setting-row__right">
<picker :value="speedIndex" :range="speedList" @change="onPrintSpeedChanged" range-key="name">
<view class="setting-row__picker">
<text class="setting-row__value">{{ speedList[speedIndex]?.name || '' }}</text>
<u-icon name="arrow-down" :size="24" color="#999" />
</view>
</picker>
</view>
</view>
<!-- 灰度阈值 -->
<view class="setting-row">
<text class="setting-row__label">灰度阈值</text>
<view class="setting-row__right">
<input class="setting-row__input" type="number" v-model="threshold" />
</view>
</view>
<!-- JSON配置模式 -->
<view class="setting-row">
<text class="setting-row__label">JSON配置</text>
<view class="setting-row__right">
<switch :checked="jsonMode" @change="onPrintModeChanged" style="transform: scale(0.75)" />
</view>
</view>
</scroll-view>
<!-- 底部操作按钮 -->
<view class="print-popup__footer">
<view class="footer-grid">
<view class="footer-btn" @click="handleStartDiscovery">
<u-icon name="search" :size="30" color="#2979ff" />
<text>搜索打印机</text>
</view>
<view class="footer-btn" @click="handleStopDiscovery">
<u-icon name="close-circle" :size="30" color="#f56c6c" />
<text>停止搜索</text>
</view>
<view class="footer-btn" @click="handleOpenPrinter">
<u-icon name="link" :size="30" color="#2979ff" />
<text>连接打印机</text>
</view>
<view class="footer-btn" @click="handleClosePrinter">
<u-icon name="minus-circle" :size="30" color="#f56c6c" />
<text>断开连接</text>
</view>
<view class="footer-btn footer-btn--print" @click="handlePrintLabel">
<u-icon v-if="!printing" name="printer" :size="30" color="#fff" />
<u-icon v-else name="reload" :size="30" color="#fff" class="spinning" />
<text>{{ printing ? '打印中...' : '打印' }}</text>
</view>
</view>
</view>
</view>
</u-popup>
</view>
</template>
<script setup>
import { ref, watch, onBeforeUnmount, nextTick, getCurrentInstance } from 'vue'
import {
DrawType,
LPAPIFactory
} from '@/assets/js/js_sdk'
import '@/utils/bwipjs-polyfill.js'
import bwipjs from '@/scanpages/assets/bwip-js/bwip-js.mjs'
// ===== Props =====
const props = defineProps({
modelValue: { type: Boolean, default: false },
height: { type: String, default: '85%' },
labelWidth: { type: Number, default: 50 },
labelHeight: { type: Number, default: 30 },
margin: { type: Number, default: 2 },
barcodeText: { type: String, default: '12345678' },
barcodeTopText: { type: String, default: '' },
barcodeBottomText: { type: String, default: '' }
})
const emit = defineEmits(['update:modelValue', 'close', 'printed', 'error'])
const instance = getCurrentInstance()
// ===== 响应式数据 =====
const canvasId = 'lpapi-ble-popup'
const labelW = ref(960)
const labelH = ref(960)
const canvasStyles = ref({})
const localVisible = ref(false)
const deviceList = ref([{ name: '未检测到打印机' }])
const deviceIndex = ref(0)
const rotationIndex = ref(1)
const rotationList = [
{ name: '横向打印', value: 0 },
{ name: '右转90度', value: 90 },
{ name: '转转180度', value: 180 },
{ name: '左转90度', value: 270 }
]
const gapList = [
{ name: '随打印机设置', value: 255 },
{ name: '小票纸', value: 0 },
{ name: '不干胶', value: 2 },
{ name: '卡纸', value: 3 }
]
const gapIndex = ref(0)
const darknessList = [
{ name: '随打印机设置', value: 255 },
{ name: '6 (正常)', value: 6 },
{ name: '7', value: 7 },
{ name: '8', value: 8 },
{ name: '9', value: 9 },
{ name: '10 (较浓)', value: 10 },
{ name: '11', value: 11 },
{ name: '12', value: 12 },
{ name: '13', value: 13 },
{ name: '14', value: 14 },
{ name: '15 (最浓)', value: 15 }
]
const darknessIndex = ref(0)
const speedList = [
{ name: '随打印机设置', value: 255 },
{ name: '最慢', value: 1 },
{ name: '较慢', value: 2 },
{ name: '正常', value: 3 },
{ name: '较快', value: 4 },
{ name: '最快', value: 5 }
]
const speedIndex = ref(0)
const threshold = ref(128)
const jsonMode = ref(false)
const printing = ref(false)
const isWeiXin = ref(false)
const isAlipay = ref(false)
const lpapi = ref(undefined)
const context = ref(undefined)
const previewList = ref([])
// ===== 取值辅助 =====
const getDevice = () => {
return deviceList.value[deviceIndex.value]
}
const getOrientation = () => {
return rotationList[rotationIndex.value]?.value || 0
}
const getGapType = () => {
return gapList[gapIndex.value]?.value || 255
}
const getPrintDarkness = () => {
return darknessList[darknessIndex.value]?.value || 255
}
const getPrintSpeed = () => {
return speedList[speedIndex.value]?.value || 255
}
const getThreshold = () => {
return Number(threshold.value)
}
// ===== Canvas 样式 =====
const updateCanvasStyle = () => {
var pos = { position: 'absolute' }
if (isWeiXin.value) {
pos.left = '-999999rpx'
pos.top = '-999999rpx'
pos.opacity = '0'
pos.pointerEvents = 'none'
pos.zIndex = '-1'
} else {
pos.left = '-999999rpx'
pos.top = '-999999rpx'
}
canvasStyles.value = Object.assign(
{ width: labelW.value + 'px', height: labelH.value + 'px' },
pos
)
}
// ===== Canvas 更新 =====
const updateCanvas = (jobInfo) => {
return new Promise((resolve) => {
if (jobInfo && jobInfo.canvas) {
labelW.value = jobInfo.canvas.width
labelH.value = jobInfo.canvas.height
updateCanvasStyle()
}
setTimeout(() => resolve(true), 100)
})
}
// ===== PDF417 条码生成(使用 bwip-js=====
const _renderBwipjs = (canvas, opts) => {
try {
bwipjs.toCanvas(canvas, opts)
} catch (e) {
if (typeof canvas.getContext === 'function') {
var proto = Object.getPrototypeOf(canvas)
var ctorName = proto && proto.constructor && proto.constructor.name
if (ctorName && !(/HTMLCanvasElement|OffscreenCanvas/).test(ctorName)) {
try {
Object.defineProperty(proto.constructor, 'name', { configurable: true, value: 'HTMLCanvasElement' })
bwipjs.toCanvas(canvas, opts)
Object.defineProperty(proto.constructor, 'name', { configurable: true, value: ctorName })
return
} catch (e2) {}
}
}
throw e
}
}
const generateBarcodeImage = (text, widthMM, heightMM) => {
return new Promise((resolve, reject) => {
var dpi = 203
var pxPerMM = dpi / 25.4
var tw = Math.round(widthMM * pxPerMM)
var th = Math.round(heightMM * pxPerMM)
var baseScale = Math.max(3, Math.floor(tw / 60))
var bwipOpts = {
bcid: 'pdf417',
text: text,
scale: baseScale,
includetext: false,
padding: 0
}
nextTick(() => {
var query = uni.createSelectorQuery().in(instance)
query.select('#' + canvasId).node().exec((res) => {
try {
if (!res || !res[0] || !res[0].node) {
return reject(new Error('canvas 未找到'))
}
var canvas = res[0].node
_renderBwipjs(canvas, bwipOpts)
console.log('bwip-js PDF417:', { w: canvas.width, h: canvas.height, tw: tw, th: th })
uni.canvasToTempFilePath({
canvas: canvas,
x: 0, y: 0,
width: canvas.width,
height: canvas.height,
success: (t) => {
if (isWeiXin.value) {
var img = canvas.createImage()
img.src = t.tempFilePath
img.onload = () => { resolve(img) }
img.onerror = (e) => { reject(e) }
} else {
resolve(t.tempFilePath)
}
},
fail: (e) => { reject(e) }
})
} catch (e) { reject(e) }
})
})
})
}
// ===== 标签绘制(总入口) =====
const printLabel = (isPreview) => {
if (jsonMode.value) {
return printLabelWithJsonMode(isPreview)
} else {
return printLabelWithDrawMode(isPreview)
}
}
const printLabelWithDrawMode = async (isPreview) => {
var api = lpapi.value
var lW = props.labelWidth
var lH = props.labelHeight
var m = props.margin
var uW = lW - m * 2
var jobInfo = api.startJob({
context: context.value,
width: lW,
height: lH,
orientation: getOrientation(),
isPreview: isPreview
})
await updateCanvas(jobInfo)
if (props.barcodeTopText) {
api.drawText({
text: props.barcodeTopText,
x: m,
y: m,
width: uW,
height: 5,
fontHeight: 4,
horizontalAlignment: 1
})
}
var barcodeY = m + (props.barcodeTopText ? 7 : 0)
var barcodeH = lH - m * 2 - (props.barcodeTopText ? 7 : 0) - (props.barcodeBottomText ? 7 : 0)
try {
var img = await generateBarcodeImage(props.barcodeText, uW, barcodeH)
api.drawImage({ img: img, x: m, y: barcodeY, width: uW, height: barcodeH })
} catch (e) {
console.error('PDF417 绘制失败:', e)
}
if (props.barcodeBottomText) {
var by = lH - m - 5
api.drawText({
text: props.barcodeBottomText,
x: m,
y: by,
width: uW,
height: 5,
fontHeight: 3.5,
horizontalAlignment: 1
})
}
return api.commitJob({
gapType: getGapType(),
printDarkness: getPrintDarkness(),
printSpeed: getPrintSpeed()
})
}
const printLabelWithJsonMode = (isPreview) => {
var device = getDevice()
var lW = props.labelWidth
var lH = props.labelHeight
var m = props.margin
var uW = lW - m * 2
var jobPage = []
if (props.barcodeTopText) {
jobPage.push({
type: DrawType.text,
text: props.barcodeTopText,
x: m,
y: m,
width: uW,
height: 5,
fontHeight: 4,
horizontalAlignment: 1
})
}
var barcodeY = m + (props.barcodeTopText ? 7 : 0)
var barcodeH = lH - m * 2 - (props.barcodeTopText ? 7 : 0) - (props.barcodeBottomText ? 7 : 0)
return generateBarcodeImage(props.barcodeText, uW, barcodeH).then((img) => {
jobPage.push({
type: DrawType.image,
img: img,
x: m,
y: barcodeY,
width: uW,
height: barcodeH
})
if (props.barcodeBottomText) {
jobPage.push({
type: DrawType.text,
text: props.barcodeBottomText,
x: m,
y: lH - m - 5,
width: uW,
height: 5,
fontHeight: 3.5,
horizontalAlignment: 1
})
}
return lpapi.value.print({
jobInfo: {
jobWidth: lW,
jobHeight: lH,
orientation: getOrientation(),
isPreview: isPreview
},
printerInfo: {
name: device ? device.name : undefined,
deviceId: device ? device.deviceId : undefined
},
jobPage: jobPage,
onJobCreated: (jobInfo) => {
return updateCanvas(jobInfo)
},
onPageComplete: (res) => {
// 标签页面渲染完毕时的回调
},
onPagePrintComplete: (res) => {
// 标签页面打印完毕时的回调
}
})
})
}
// ===== 初始化 =====
const initPrinter = () => {
// #ifdef MP-WEIXIN
isWeiXin.value = true
// #endif
// #ifdef MP-ALIPAY
isAlipay.value = true
// #endif
updateCanvasStyle()
lpapi.value = LPAPIFactory.getInstance({ showLog: 4 })
lpapi.value.startDiscovery({
timeout: 0,
deviceFound: (devices) => {
if (devices && devices.length > 0) {
deviceList.value.splice(0)
deviceList.value.push(...devices)
}
}
})
if (isWeiXin.value) {
context.value = lpapi.value.createDrawContext()
} else {
context.value = lpapi.value.createDrawContext({ canvasId: canvasId })
}
if (context.value) {
lpapi.value.setDrawContext(context.value)
handlePreviewLabel()
}
}
// ===== 选择器变更 =====
const onDeviceChanged = (e) => {
deviceIndex.value = e ? e.detail.value : 0
}
const onRotationChanged = (e) => {
rotationIndex.value = e ? e.detail.value : 0
}
const onGapTypeChanged = (e) => {
gapIndex.value = e ? e.detail.value : 0
}
const onDarknessChanged = (e) => {
darknessIndex.value = e ? e.detail.value : 0
}
const onPrintSpeedChanged = (e) => {
speedIndex.value = e ? e.detail.value : 0
}
const onPrintModeChanged = (e) => {
jsonMode.value = e.detail.value
handlePreviewLabel()
}
// ===== 打印机操作 =====
const handleStartDiscovery = () => {
uni.showLoading({ title: '正在搜索打印机...' })
lpapi.value.startDiscovery({
timeout: 5000,
deviceFound: (devices) => {
if (devices && devices.length > 0) {
deviceList.value.splice(0)
deviceList.value.push(...devices)
}
},
adapterStateChange: (result) => {
if (!result.discovering) {
uni.hideLoading()
}
}
})
}
const handleStopDiscovery = () => {
lpapi.value.stopDiscovery()
uni.hideLoading()
}
const handleOpenPrinter = () => {
const currDevice = getDevice()
if (!currDevice || !currDevice.deviceId) {
uni.showToast({ title: '未检测到打印机', icon: 'none' })
return
}
uni.showLoading({ title: '正在连接打印机...' })
lpapi.value.openPrinter({
name: currDevice.name,
deviceId: currDevice.deviceId,
tryTimes: isAlipay.value ? 1 : 5,
success: (resp) => {
console.log('---- 【打印机连接成功】')
uni.hideLoading()
uni.showToast({ title: '打印机连接成功!', icon: 'success' })
},
fail: (resp) => {
console.warn('---- 【打印机连接失败】:', JSON.stringify(resp))
uni.hideLoading()
uni.showToast({ title: '打印机连接失败!', icon: 'error' })
}
})
}
const handleClosePrinter = () => {
console.log('---- 关闭打印机!')
lpapi.value.closePrinter()
}
// ===== 预览 =====
const handlePreviewLabel = () => {
previewList.value.splice(0)
printLabel(true).then((res) => {
if (res.statusCode === 0) {
res.previewData.forEach((v) => {
previewList.value.push({
value: v,
key: Date.now() + '-' + Math.random() * 1000
})
})
} else {
console.warn('预览失败:', res)
}
})
}
// ===== 打印 =====
const handlePrintLabel = async () => {
printing.value = true
try {
var d = getDevice()
if (!d || !d.deviceId) {
printing.value = false
return uni.showToast({ title: '未检测到打印机', icon: 'none' })
}
await new Promise((resolve, reject) => {
lpapi.value.openPrinter({
name: d.name,
deviceId: d.deviceId,
tryTimes: 5,
success: resolve,
fail: reject
})
})
var res = await printLabel(false)
if (res.statusCode === 0) {
uni.showToast({ title: '打印成功!', icon: 'success' })
emit('printed', { statusCode: 0 })
} else {
uni.showToast({ title: res.errMsg || '打印失败!', icon: 'error' })
emit('error', res)
}
} catch (e) {
console.error('打印异常:', e)
uni.showToast({ title: '打印机连接失败!', icon: 'error' })
emit('error', e)
} finally {
printing.value = false
}
}
// ===== 关闭弹窗 =====
const handleClose = () => {
handleClosePrinter()
emit('close')
}
// ===== 监听器 =====
watch(() => props.modelValue, (val) => {
localVisible.value = val
if (val) nextTick(() => initPrinter())
})
watch(localVisible, (val) => {
emit('update:modelValue', val)
})
onBeforeUnmount(() => {
if (lpapi.value) {
lpapi.value.closePrinter()
lpapi.value.stopDiscovery()
}
})
</script>
<style lang="scss" scoped>
.print-popup { display: flex; flex-direction: column; height: 100%; background: #f5f6f8;
&__header { flex-shrink: 0; padding: 28rpx 32rpx 20rpx; text-align: center; border-bottom: 1rpx solid #e8ecf1; }
&__title { font-size: 32rpx; font-weight: 700; color: #1a1a2e; }
&__body { flex: 1; overflow-y: auto; overflow-x: hidden; box-sizing: border-box; padding: 20rpx 24rpx; }
&__footer { flex-shrink: 0; padding: 12rpx 24rpx; padding-bottom: calc(12rpx + env(safe-area-inset-bottom)); background: #fff; border-top: 1rpx solid #e8ecf1; }
}
.footer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12rpx; }
.footer-btn { display: flex; align-items: center; justify-content: center; gap: 8rpx; height: 76rpx; font-size: 26rpx; font-weight: 500; border-radius: 12rpx; background: #f5f6f8; color: #1a1a2e; transition: transform .15s, box-shadow .15s;
&:active { transform: scale(.95); opacity: .85; }
&--print { background: linear-gradient(135deg, #2979ff, #5a9aff); color: #fff; box-shadow: 0 4rpx 16rpx rgba(41,121,255,.35); grid-column: 1 / -1;}
}
.spinning { animation: spin .8s linear infinite; }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.setting-row { display: flex; align-items: center; justify-content: space-between; box-sizing: border-box; padding: 22rpx 24rpx; margin-bottom: 12rpx; background: #fff; border-radius: 12rpx;
&__label { font-size: 26rpx; color: #6b7c93; flex-shrink: 0; width: 160rpx; }
&__right { flex: 1; display: flex; justify-content: flex-end; }
&__picker { display: flex; align-items: center; gap: 8rpx; }
&__value { font-size: 26rpx; color: #1a1a2e; font-weight: 500;
&--empty { color: #b0bec5; }
}
&__input { flex: 1; font-size: 26rpx; color: #1a1a2e; text-align: right; padding: 4rpx 0; }
}
.preview-section { margin-bottom: 24rpx; padding: 20rpx; background: #fff; border-radius: 12rpx; overflow: hidden;
&__title { display: block; font-size: 26rpx; font-weight: 600; color: #1a1a2e; margin-bottom: 16rpx; }
&__list { display: flex; flex-wrap: wrap; justify-content: center; gap: 16rpx; }
}
.preview-img { width: 100%; border: 1rpx dashed #ccc; border-radius: 4rpx; }
</style>