add default user signatures

app/javascript/submission_form/crop_canvas.js

@@ -0,0 +1,49 @@
+function cropCanvasAndExportToPNG (canvas) {
+  const ctx = canvas.getContext('2d')
+
+  const width = canvas.width
+  const height = canvas.height
+
+  let topmost = height
+  let bottommost = 0
+  let leftmost = width
+  let rightmost = 0
+
+  const imageData = ctx.getImageData(0, 0, width, height)
+  const pixels = imageData.data
+
+  for (let y = 0; y < height; y++) {
+    for (let x = 0; x < width; x++) {
+      const pixelIndex = (y * width + x) * 4
+      const alpha = pixels[pixelIndex + 3]
+      if (alpha !== 0) {
+        topmost = Math.min(topmost, y)
+        bottommost = Math.max(bottommost, y)
+        leftmost = Math.min(leftmost, x)
+        rightmost = Math.max(rightmost, x)
+      }
+    }
+  }
+
+  const croppedWidth = rightmost - leftmost + 1
+  const croppedHeight = bottommost - topmost + 1
+
+  const croppedCanvas = document.createElement('canvas')
+  croppedCanvas.width = croppedWidth
+  croppedCanvas.height = croppedHeight
+  const croppedCtx = croppedCanvas.getContext('2d')
+
+  croppedCtx.drawImage(canvas, leftmost, topmost, croppedWidth, croppedHeight, 0, 0, croppedWidth, croppedHeight)
+
+  return new Promise((resolve, reject) => {
+    croppedCanvas.toBlob((blob) => {
+      if (blob) {
+        resolve(blob)
+      } else {
+        reject(new Error('Failed to create a PNG blob.'))
+      }
+    }, 'image/png')
+  })
+}
+
+export { cropCanvasAndExportToPNG }

app/javascript/submission_form/form.vue

@@ -415,6 +415,11 @@ export default {
       required: false,
       default: false
     },
+    goToLast: {
+      type: Boolean,
+      required: false,
+      default: true
+    },
     isDemo: {
       type: Boolean,
       required: false,
@@ -488,10 +493,12 @@ export default {
     }
   },
   mounted () {
-    this.currentStep = Math.min(
-      this.stepFields.indexOf([...this.stepFields].reverse().find((fields) => fields.some((f) => !!this.values[f.uuid]))) + 1,
-      this.stepFields.length - 1
-    )
+    if (this.goToLast) {
+      this.currentStep = Math.min(
+        this.stepFields.indexOf([...this.stepFields].reverse().find((fields) => fields.some((f) => !!this.values[f.uuid]))) + 1,
+        this.stepFields.length - 1
+      )
+    }
 
     if (/iPhone|iPad|iPod/i.test(navigator.userAgent)) {
       this.$nextTick(() => {

app/javascript/submission_form/initials_step.vue

@@ -76,7 +76,7 @@
 </template>
 
 <script>
-import SignatureStep from './signature_step'
+import { cropCanvasAndExportToPNG } from './crop_canvas'
 import { IconReload, IconSignature, IconArrowsDiagonalMinimize2 } from '@tabler/icons-vue'
 
 export default {
@@ -146,7 +146,6 @@ export default {
     }
   },
   methods: {
-    cropCanvasAndExportToPNG: SignatureStep.methods.cropCanvasAndExportToPNG,
     remove () {
       this.$emit('update:model-value', '')
     },
@@ -195,7 +194,7 @@ export default {
       }
 
       return new Promise((resolve) => {
-        this.cropCanvasAndExportToPNG(this.$refs.canvas).then(async (blob) => {
+        cropCanvasAndExportToPNG(this.$refs.canvas).then(async (blob) => {
           const file = new File([blob], 'initials.png', { type: 'image/png' })
 
           if (this.isDirectUpload) {

app/javascript/submission_form/signature_step.vue

@@ -92,6 +92,7 @@
 
 <script>
 import { IconReload, IconCamera, IconTextSize, IconArrowsDiagonalMinimize2 } from '@tabler/icons-vue'
+import { cropCanvasAndExportToPNG } from './crop_canvas'
 
 export default {
   name: 'SignatureStep',
@@ -248,60 +249,13 @@ export default {
         reader.readAsDataURL(file)
       }
     },
-    cropCanvasAndExportToPNG (canvas) {
-      const ctx = canvas.getContext('2d')
-
-      const width = canvas.width
-      const height = canvas.height
-
-      let topmost = height
-      let bottommost = 0
-      let leftmost = width
-      let rightmost = 0
-
-      const imageData = ctx.getImageData(0, 0, width, height)
-      const pixels = imageData.data
-
-      for (let y = 0; y < height; y++) {
-        for (let x = 0; x < width; x++) {
-          const pixelIndex = (y * width + x) * 4
-          const alpha = pixels[pixelIndex + 3]
-          if (alpha !== 0) {
-            topmost = Math.min(topmost, y)
-            bottommost = Math.max(bottommost, y)
-            leftmost = Math.min(leftmost, x)
-            rightmost = Math.max(rightmost, x)
-          }
-        }
-      }
-
-      const croppedWidth = rightmost - leftmost + 1
-      const croppedHeight = bottommost - topmost + 1
-
-      const croppedCanvas = document.createElement('canvas')
-      croppedCanvas.width = croppedWidth
-      croppedCanvas.height = croppedHeight
-      const croppedCtx = croppedCanvas.getContext('2d')
-
-      croppedCtx.drawImage(canvas, leftmost, topmost, croppedWidth, croppedHeight, 0, 0, croppedWidth, croppedHeight)
-
-      return new Promise((resolve, reject) => {
-        croppedCanvas.toBlob((blob) => {
-          if (blob) {
-            resolve(blob)
-          } else {
-            reject(new Error('Failed to create a PNG blob.'))
-          }
-        }, 'image/png')
-      })
-    },
     async submit () {
       if (this.modelValue) {
         return Promise.resolve({})
       }
 
       return new Promise((resolve) => {
-        this.cropCanvasAndExportToPNG(this.$refs.canvas).then(async (blob) => {
+        cropCanvasAndExportToPNG(this.$refs.canvas).then(async (blob) => {
           const file = new File([blob], 'signature.png', { type: 'image/png' })
 
           if (this.isDirectUpload) {