From abf20b0cf2114c819976a7ea35eb43d05c53f9cb Mon Sep 17 00:00:00 2001
From: nobohan <juminet@gmail.com>
Date: Wed, 4 Sep 2024 10:14:08 +0200
Subject: [PATCH] Signature: add a signature zone manually

---
 .../Resources/public/types.ts                 |   6 +-
 .../public/vuejs/DocumentSignature/App.vue    | 163 +++++++++++++-----
 .../public/vuejs/DocumentSignature/index.ts   |   4 +-
 3 files changed, 129 insertions(+), 44 deletions(-)

diff --git a/src/Bundle/ChillDocStoreBundle/Resources/public/types.ts b/src/Bundle/ChillDocStoreBundle/Resources/public/types.ts
index 1fc8b1cdd..ddc5d087c 100644
--- a/src/Bundle/ChillDocStoreBundle/Resources/public/types.ts
+++ b/src/Bundle/ChillDocStoreBundle/Resources/public/types.ts
@@ -68,7 +68,7 @@ export interface PDFPage {
   height: number,
 }
 export interface SignatureZone {
-  index: number,
+  index: number | null,
   x: number,
   y: number,
   width: number,
@@ -82,4 +82,6 @@ export interface Signature {
   zones: SignatureZone[],
 }
 
-export type SignedState = 'pending' | 'signed' | 'rejected' | 'canceled' | 'error';
\ No newline at end of file
+export type SignedState = 'pending' | 'signed' | 'rejected' | 'canceled' | 'error';
+
+export type CanvasEvent = 'select' | 'add';
\ No newline at end of file
diff --git a/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue b/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue
index bc4bfc544..114c08704 100644
--- a/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue
+++ b/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/App.vue
@@ -80,8 +80,32 @@
   </div>
 
   <div class="col-12 p-4" id="action-buttons" v-if="signedState !== 'signed'">
+
+    <div class="row mb-3">
+      <div class="col-12 d-flex justify-content-end">
+        <div class="col-4 col-xl-3 gap-2 d-grid">
+          <button
+            v-if="adding"
+            class="btn btn-misc btn-cancel me-2 btn-sm"
+            @click="removeNewZone()"
+          >
+            {{ $t("remove_sign_zone") }}
+          </button>
+        </div>
+        <div class="col-4 gap-2 d-grid">
+          <button
+            class="btn btn-create btn-sm"
+            :class="{ active: canvasEvent === 'add' }"
+            @click="toggleAddZone()"
+          >
+            {{ $t("add_sign_zone") }}
+          </button>
+        </div>
+      </div>
+    </div>
+
     <div class="row">
-      <div class="col-6">
+      <div class="col-4">
         <button
           class="btn btn-action me-2"
           :disabled="!userSignatureZone"
@@ -90,7 +114,7 @@
           {{ $t("sign") }}
         </button>
       </div>
-      <div class="col-6 d-flex justify-content-end">
+      <div class="col-8 d-flex justify-content-end">
         <button
           class="btn btn-misc me-2"
           :hidden="!userSignatureZone"
@@ -119,7 +143,12 @@
 import { ref, Ref, reactive } from "vue";
 import { useToast } from "vue-toast-notification";
 import "vue-toast-notification/dist/theme-sugar.css";
-import { Signature, SignatureZone, SignedState } from "../../types";
+import {
+  CanvasEvent,
+  Signature,
+  SignatureZone,
+  SignedState,
+} from "../../types";
 import { makeFetch } from "../../../../../ChillMainBundle/Resources/public/lib/api/apiMethods";
 import * as pdfjsLib from "pdfjs-dist";
 import {
@@ -144,11 +173,12 @@ pdfjsLib.GlobalWorkerOptions.workerSrc = "pdfjs-dist/build/pdf.worker.mjs";
 
 const modalOpen: Ref<boolean> = ref(false);
 const loading: Ref<boolean> = ref(false);
+const adding: Ref<boolean> = ref(false);
+const canvasEvent: Ref<CanvasEvent> = ref("select");
 const signedState: Ref<SignedState> = ref("pending");
 const page: Ref<number> = ref(1);
 const pageCount: Ref<number> = ref(0);
 let userSignatureZone: Ref<null | SignatureZone> = ref(null);
-let pdfSource: Ref<string> = ref("");
 let pdf = {} as PDFDocumentProxy;
 
 declare global {
@@ -162,6 +192,8 @@ const $toast = useToast();
 const signature = window.signature;
 const urlInfo = build_download_info_link(signature.storedObject.filename);
 
+console.log(signature);
+
 const mountPdf = async (url: string) => {
   const loadingTask = pdfjsLib.getDocument(url);
   pdf = await loadingTask.promise;
@@ -208,33 +240,31 @@ async function downloadAndOpen(): Promise<Blob> {
 
 const initPdf = () => {
   const canvas = document.querySelectorAll("canvas")[0] as HTMLCanvasElement;
-  canvas.addEventListener(
-    "pointerup",
-    (e: PointerEvent) => canvasClick(e, canvas),
-    false
-  );
+  canvas.addEventListener("pointerup", canvasClick, false);
   setTimeout(() => addZones(page.value), 800);
 };
 
+const scaleXToCanvas = (x: number, canvasWidth: number, PDFWidth: number) =>
+  Math.round((x * canvasWidth) / PDFWidth);
+
+const scaleYToCanvas = (h: number, canvasHeight: number, PDFHeight: number) =>
+  Math.round((h * canvasHeight) / PDFHeight);
+
 const hitSignature = (
   zone: SignatureZone,
   xy: number[],
   canvasWidth: number,
   canvasHeight: number
-) => {
-  const scaleXToCanvas = (x: number) =>
-    Math.round((x * canvasWidth) / zone.PDFPage.width);
-  const scaleHeightToCanvas = (h: number) =>
-    Math.round((h * canvasHeight) / zone.PDFPage.height);
-  const scaleYToCanvas = (y: number) =>
-    Math.round(zone.PDFPage.height - scaleHeightToCanvas(y));
-  return (
-    scaleXToCanvas(zone.x) < xy[0] &&
-    xy[0] < scaleXToCanvas(zone.x + zone.width) &&
-    scaleYToCanvas(zone.y) < xy[1] &&
-    xy[1] < scaleYToCanvas(zone.y) + scaleHeightToCanvas(zone.height)
-  );
-};
+) =>
+  scaleXToCanvas(zone.x, canvasWidth, zone.PDFPage.width) < xy[0] &&
+  xy[0] <
+    scaleXToCanvas(zone.x + zone.width, canvasWidth, zone.PDFPage.width) &&
+  zone.PDFPage.height -
+    scaleYToCanvas(zone.y, canvasHeight, zone.PDFPage.height) <
+    xy[1] &&
+  xy[1] <
+    scaleYToCanvas(zone.height - zone.y, canvasHeight, zone.PDFPage.height) +
+      zone.PDFPage.height;
 
 const selectZone = (z: SignatureZone, canvas: HTMLCanvasElement) => {
   userSignatureZone.value = z;
@@ -245,7 +275,7 @@ const selectZone = (z: SignatureZone, canvas: HTMLCanvasElement) => {
   }
 };
 
-const canvasClick = (e: PointerEvent, canvas: HTMLCanvasElement) =>
+const selectZoneOnCanvas = (e: PointerEvent, canvas: HTMLCanvasElement) =>
   signature.zones
     .filter((z) => z.PDFPage.index + 1 === page.value)
     .map((z) => {
@@ -262,6 +292,13 @@ const canvasClick = (e: PointerEvent, canvas: HTMLCanvasElement) =>
       }
     });
 
+const canvasClick = (e: PointerEvent) => {
+  const canvas = document.querySelectorAll("canvas")[0] as HTMLCanvasElement;
+  canvasEvent.value === "select"
+    ? selectZoneOnCanvas(e, canvas)
+    : addZoneOnCanvas(e, canvas);
+};
+
 const turnPage = async (upOrDown: number) => {
   userSignatureZone.value = null;
   page.value = page.value + upOrDown;
@@ -296,12 +333,6 @@ const drawZone = (
 ) => {
   const unselectedBlue = "#007bff";
   const selectedBlue = "#034286";
-  const scaleXToCanvas = (x: number) =>
-    Math.round((x * canvasWidth) / zone.PDFPage.width);
-  const scaleHeightToCanvas = (h: number) =>
-    Math.round((h * canvasHeight) / zone.PDFPage.height);
-  const scaleYToCanvas = (y: number) =>
-    Math.round(zone.PDFPage.height - scaleHeightToCanvas(y));
   ctx.strokeStyle =
     userSignatureZone.value?.index === zone.index
       ? selectedBlue
@@ -309,16 +340,22 @@ const drawZone = (
   ctx.lineWidth = 2;
   ctx.lineJoin = "bevel";
   ctx.strokeRect(
-    scaleXToCanvas(zone.x),
-    scaleYToCanvas(zone.y),
-    scaleXToCanvas(zone.width),
-    scaleHeightToCanvas(zone.height)
+    scaleXToCanvas(zone.x, canvasWidth, zone.PDFPage.width),
+    zone.PDFPage.height -
+      scaleYToCanvas(zone.y, canvasHeight, zone.PDFPage.height),
+    scaleXToCanvas(zone.width, canvasWidth, zone.PDFPage.width),
+    scaleYToCanvas(zone.height, canvasHeight, zone.PDFPage.height)
   );
   ctx.font = "bold 16px serif";
   ctx.textAlign = "center";
   ctx.fillStyle = "black";
-  const xText = scaleXToCanvas(zone.x) + scaleXToCanvas(zone.width) / 2;
-  const yText = scaleYToCanvas(zone.y) + scaleHeightToCanvas(zone.height) / 2;
+  const xText =
+    scaleXToCanvas(zone.x, canvasWidth, zone.PDFPage.width) +
+    scaleXToCanvas(zone.width, canvasWidth, zone.PDFPage.width) / 2;
+  const yText =
+    zone.PDFPage.height -
+    scaleYToCanvas(zone.y, canvasHeight, zone.PDFPage.height) +
+    scaleYToCanvas(zone.height, canvasHeight, zone.PDFPage.height) / 2;
   if (userSignatureZone.value?.index === zone.index) {
     ctx.fillStyle = selectedBlue;
     ctx.fillText("Signer ici", xText, yText);
@@ -420,14 +457,58 @@ const confirmSign = () => {
 };
 
 const undoSign = async () => {
-  // const canvas = document.querySelectorAll("canvas")[0];
-  // const ctx = canvas.getContext("2d");
-  // if (ctx && userSignatureZone.value) {
-  //   //drawZone(userSignatureZone.value, ctx, canvas.width, canvas.height);
-  // }
+  signature.zones = signature.zones.filter((z) => z.index !== null);
   await setPage(page.value);
   setTimeout(() => addZones(page.value), 200);
   userSignatureZone.value = null;
+  adding.value = false;
+};
+
+const toggleAddZone = () => {
+  canvasEvent.value === "select"
+    ? (canvasEvent.value = "add")
+    : (canvasEvent.value = "select");
+};
+
+const addZoneOnCanvas = (e: PointerEvent, canvas: HTMLCanvasElement) => {
+  const BOX_WIDTH = 180;
+  const BOX_HEIGHT = 90;
+  const PDFPageHeight = canvas.height;
+  const PDFPageWidth = canvas.width;
+
+  const x = e.offsetX;
+  const y = e.offsetY;
+  const newZone: SignatureZone = {
+    index: null,
+    x:
+      scaleXToCanvas(x, canvas.width, PDFPageWidth) -
+      scaleXToCanvas(BOX_WIDTH / 2, canvas.width, PDFPageWidth),
+    y:
+      PDFPageHeight -
+      scaleYToCanvas(y, canvas.height, PDFPageHeight) +
+      scaleYToCanvas(BOX_HEIGHT / 2, canvas.height, PDFPageHeight),
+    width: BOX_WIDTH,
+    height: BOX_HEIGHT,
+    PDFPage: {
+      index: page.value - 1,
+      width: PDFPageWidth,
+      height: PDFPageHeight,
+    },
+  };
+  signature.zones.push(newZone);
+
+  setTimeout(() => addZones(page.value), 200);
+  canvasEvent.value = "select";
+  adding.value = true;
+};
+
+const removeNewZone = async () => {
+  signature.zones = signature.zones.filter((z) => z.index !== null);
+  userSignatureZone.value = null;
+  await setPage(page.value);
+  setTimeout(() => addZones(page.value), 200);
+  canvasEvent.value = "select";
+  adding.value = false;
 };
 
 downloadAndOpen();
diff --git a/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/index.ts b/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/index.ts
index 77f2ee48c..c5c4b5eb8 100644
--- a/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/index.ts
+++ b/src/Bundle/ChillDocStoreBundle/Resources/public/vuejs/DocumentSignature/index.ts
@@ -16,7 +16,9 @@ const appMessages = {
         last_sign_zone: 'Zone de signature précédente',
         next_sign_zone: 'Zone de signature suivante',
         electronic_signature_in_progress: 'Signature électronique en cours...',
-        loading: 'Chargement...'
+        loading: 'Chargement...',
+        add_sign_zone: 'Ajouter une zone de signature',
+        remove_sign_zone: 'Enlever la zone',
     }
 }