From d9c5ee9a7bd7b73a41fc2adee14a2646029d3945 Mon Sep 17 00:00:00 2001
From: Artur Arseniev <artur.catch@hotmail.it>
Date: Wed, 30 Aug 2023 14:31:57 +0400
Subject: [PATCH] Fix canvas scroll on component select from layers. Closes
 #5342

---
 src/canvas/types.ts                      |  4 +-
 src/canvas/view/CanvasView.ts            |  5 +++
 src/dom_components/view/ComponentView.ts | 47 ++++++++++++------------
 3 files changed, 31 insertions(+), 25 deletions(-)

diff --git a/src/canvas/types.ts b/src/canvas/types.ts
index 7f87c71653..e3112f6a9e 100644
--- a/src/canvas/types.ts
+++ b/src/canvas/types.ts
@@ -6,7 +6,9 @@ export interface ToWorldOption {
   toWorld?: boolean;
 }
 
-export interface GetBoxRectOptions extends ToScreenOption {}
+export interface GetBoxRectOptions extends ToScreenOption {
+  local?: boolean;
+}
 
 /**{START_EVENTS}*/
 export enum CanvasEvents {
diff --git a/src/canvas/view/CanvasView.ts b/src/canvas/view/CanvasView.ts
index 78fbf1a514..ce5f240acf 100644
--- a/src/canvas/view/CanvasView.ts
+++ b/src/canvas/view/CanvasView.ts
@@ -386,6 +386,11 @@ export default class CanvasView extends ModuleView<Canvas> {
       height,
     };
 
+    if (opts.local) {
+      boxRect.x = left;
+      boxRect.y = top;
+    }
+
     return opts.toScreen ? this.getRectToScreen(boxRect) : boxRect;
   }
 
diff --git a/src/dom_components/view/ComponentView.ts b/src/dom_components/view/ComponentView.ts
index 94426401f6..964b706565 100644
--- a/src/dom_components/view/ComponentView.ts
+++ b/src/dom_components/view/ComponentView.ts
@@ -16,13 +16,6 @@ import ComponentsView from './ComponentsView';
 
 type ClbObj = ReturnType<ComponentView['_clbObj']>;
 
-interface Rect {
-  top?: number;
-  left?: number;
-  bottom?: number;
-  right?: number;
-}
-
 export interface IComponentView extends ExtractMethods<ComponentView> {}
 
 export default class ComponentView extends View</**
@@ -433,7 +426,7 @@ Component> {
    * have to take in account offsetParent
    */
   getOffsetRect() {
-    const rect: Rect = {};
+    const rect = { top: 0, left: 0, bottom: 0, right: 0 };
     const target = this.el;
     let gtop = 0;
     let gleft = 0;
@@ -457,32 +450,38 @@ Component> {
     return rect;
   }
 
-  isInViewport({ rect }: { rect?: Rect } = {}) {
-    const { el } = this;
-    const elDoc = el.ownerDocument;
-    const { body } = elDoc;
-    const frameElement = elDoc.defaultView?.frameElement as HTMLIFrameElement;
-    const { top, left } = rect || this.getOffsetRect();
-    const frame = this.frameView.getOffsetRect();
+  isInViewport() {
+    const { el, em, frameView } = this;
+    const canvasView = em.Canvas.getCanvasView();
+    const elRect = canvasView.getElBoxRect(el, { local: true });
+    const frameEl = frameView.el;
+    const frameH = frameEl.clientHeight;
+    const frameW = frameEl.clientWidth;
+
+    const elTop = elRect.y;
+    const elRight = elRect.x;
+    const elBottom = elTop + elRect.height;
+    const elLeft = elRight + elRect.width;
+    const isTopInside = elTop >= 0 && elTop < frameH;
+    const isBottomInside = elBottom > 0 && elBottom < frameH;
+    const isLeftInside = elLeft >= 0 && elLeft < frameW;
+    const isRightInside = elRight > 0 && elRight <= frameW;
+
+    const partiallyIn = (isTopInside || isBottomInside) && (isLeftInside || isRightInside);
 
-    return (
-      top! >= frame.scrollTop &&
-      left! >= frame.scrollLeft &&
-      top! <= frame.scrollBottom &&
-      left! <= frameElement?.offsetWidth + body.scrollLeft
-    );
+    return partiallyIn;
   }
 
   scrollIntoView(opts: { force?: boolean } & ScrollIntoViewOptions = {}) {
-    const rect = this.getOffsetRect();
-    const isInViewport = this.isInViewport({ rect });
+    const isInViewport = this.isInViewport();
 
     if (!isInViewport || opts.force) {
       const { el } = this;
 
       // PATCH: scrollIntoView won't work with multiple requests from iframes
       if (opts.behavior !== 'smooth') {
-        el.ownerDocument.defaultView?.scrollTo(0, rect.top!);
+        const rect = this.getOffsetRect();
+        el.ownerDocument.defaultView?.scrollTo(0, rect.top);
       } else {
         el.scrollIntoView({
           behavior: 'smooth',