feat: Added barcode download btn

packages/nc-gui/components/virtual-cell/barcode/JsBarcodeWrapper.vue

@@ -6,13 +6,14 @@ const props = defineProps({
   barcodeValue: { type: String, required: true },
   barcodeFormat: { type: String, required: true },
   customStyle: { type: Object, required: false },
+  showDownload: { type: Boolean, required: false, default: false },
 })
 
 const emit = defineEmits(['onClickBarcode'])
 
 const isGallery = inject(IsGalleryInj, ref(false))
 
-const barcodeSvgRef = ref<HTMLElement>()
+const barcodeSvgRef = ref<SVGGraphicsElement>()
 const errorForCurrentInput = ref(false)
 
 const generate = () => {
@@ -34,6 +35,79 @@ const generate = () => {
   }
 }
 
+function copyStylesInline(destinationNode: any, sourceNode: any) {
+  const containerElements = ['svg', 'g']
+  for (let cd = 0; cd < destinationNode.childNodes.length; cd++) {
+    const child = destinationNode.childNodes[cd]
+    if (containerElements.includes(child.tagName)) {
+      copyStylesInline(child, sourceNode.childNodes[cd])
+      continue
+    }
+
+    const style = sourceNode.childNodes[cd].currentStyle || window.getComputedStyle(sourceNode.childNodes[cd])
+    if (style === 'undefined' || style == null) continue
+    for (let st = 0; st < style.length; st++) {
+      child.style.setProperty(style[st], style.getPropertyValue(style[st]))
+    }
+  }
+}
+
+function triggerDownload(imgURI: string, fileName: string) {
+  const evt = new MouseEvent('click', {
+    view: window,
+    bubbles: false,
+    cancelable: true,
+  })
+  const a = document.createElement('a')
+  a.setAttribute('download', fileName)
+  a.setAttribute('href', imgURI)
+  a.setAttribute('target', '_blank')
+  a.dispatchEvent(evt)
+}
+
+function _downloadSvg(svg: SVGGraphicsElement, fileName: string) {
+  const copy = svg.cloneNode(true)
+
+  copyStylesInline(copy, svg)
+
+  const canvas = document.createElement('canvas')
+  const bbox = svg.getBBox()
+  canvas.width = bbox.width
+  canvas.height = bbox.height
+
+  const ctx = canvas.getContext('2d')!
+  ctx.clearRect(0, 0, bbox.width, bbox.height)
+
+  const data = new XMLSerializer().serializeToString(copy)
+  const DOMURL = window.URL || window.webkitURL || window
+  const img = new Image()
+  const svgBlob = new Blob([data], { type: 'image/svg+xml;charset=utf-8' })
+  const url = DOMURL.createObjectURL(svgBlob)
+
+  img.onload = function () {
+    ctx.drawImage(img, 0, 0)
+    DOMURL.revokeObjectURL(url)
+    if (typeof navigator !== 'undefined' && navigator.msSaveOrOpenBlob) {
+      const blob = canvas.msToBlob()
+      navigator.msSaveOrOpenBlob(blob, fileName)
+    } else {
+      const imgURI = canvas.toDataURL('image/png').replace('image/png', 'image/octet-stream')
+      triggerDownload(imgURI, fileName)
+    }
+    console.log(canvas)
+
+    // TODO: Somehow canvas dom element is getting deleted
+    // document.removeChild(canvas)
+  }
+  img.src = url
+}
+
+const downloadSvg = () => {
+  if (!barcodeSvgRef.value) return
+
+  _downloadSvg(barcodeSvgRef.value, `${props.barcodeValue}.png`)
+}
+
 const onBarcodeClick = (ev: MouseEvent) => {
   if (isGallery.value) return
   ev.stopPropagation()
@@ -45,15 +119,25 @@ onMounted(generate)
 </script>
 
 <template>
-  <svg
-    v-show="!errorForCurrentInput"
-    ref="barcodeSvgRef"
-    :class="{
-      'w-full': !isGallery,
-      'w-auto': isGallery,
-    }"
-    data-testid="barcode"
-    @click="onBarcodeClick"
-  ></svg>
-  <slot v-if="errorForCurrentInput" name="barcodeRenderError" />
+  <div class="relative">
+    <svg
+      v-show="!errorForCurrentInput"
+      ref="barcodeSvgRef"
+      :class="{
+        'w-full': !isGallery,
+        'w-auto': isGallery,
+      }"
+      data-testid="barcode"
+      @click="onBarcodeClick"
+    ></svg>
+    <slot v-if="errorForCurrentInput" name="barcodeRenderError" />
+    <NcTooltip class="!absolute bottom-0 right-0">
+      <template #title>
+        {{ $t('labels.clickToDownload') }}
+      </template>
+      <NcButton v-if="props.showDownload" size="small" type="secondary" @click="downloadSvg">
+        <GeneralIcon icon="download" class="w-4 h-4" />
+      </NcButton>
+    </NcTooltip>
+  </div>
 </template>