From 2b6d1470f936bfae113fc4765988b20e7db35bbb Mon Sep 17 00:00:00 2001
From: Christopher Chedeau <vjeuxx@gmail.com>
Date: Sat, 5 Dec 2020 15:47:03 -0800
Subject: [PATCH] Remove native gesture "support" from iOS (#2457)

We were processing both the touch move and gesture on iOS which was first firing twice as many set state, but also caused issues:
- The gesture implementation didn't support zooming on the center
- Touching down on a circle and then on the bottom chrome would freak out because initialScale was null

Touching down on the menu still isn't perfect as it shifts the shape around but doesn't completly break the zoom
---
 src/components/App.tsx | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/src/components/App.tsx b/src/components/App.tsx
index 48cc9ffa44..ebb3f2a995 100644
--- a/src/components/App.tsx
+++ b/src/components/App.tsx
@@ -1386,30 +1386,14 @@ class App extends React.Component<ExcalidrawProps, AppState> {
 
   private onGestureStart = withBatchedUpdates((event: GestureEvent) => {
     event.preventDefault();
-    this.setState({
-      selectedElementIds: {},
-    });
-    gesture.initialScale = this.state.zoom.value;
   });
 
   private onGestureChange = withBatchedUpdates((event: GestureEvent) => {
     event.preventDefault();
-    this.setState(({ zoom }) => ({
-      zoom: getNewZoom(
-        getNormalizedZoom(gesture.initialScale! * event.scale),
-        zoom,
-        { x: cursorX, y: cursorY },
-      ),
-    }));
   });
 
   private onGestureEnd = withBatchedUpdates((event: GestureEvent) => {
     event.preventDefault();
-    this.setState({
-      previousSelectedElementIds: {},
-      selectedElementIds: this.state.previousSelectedElementIds,
-    });
-    gesture.initialScale = null;
   });
 
   private handleTextWysiwyg(