smig/excalidraw
1
0
Fork 0
mirror of https://github.com/excalidraw/excalidraw.git synced 2025-05-03 10:00:07 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Cleanup wheel event listener

Browse source
This commit is contained in:
hazam 2020-01-05 01:09:10 +05:00
parent 59effbc796
commit 6cff2e7241
1 changed files with 8 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/index.tsx
View file

@ -940,6 +940,8 @@ class App extends React.Component<{}, AppState> {
this.forceUpdate();
};
private removeWheelEventListener: (() => void) | undefined;
public render() {
return (
<div
@ -1111,10 +1113,16 @@ class App extends React.Component<{}, AppState> {
width={window.innerWidth - CANVAS_WINDOW_OFFSET_LEFT}
height={window.innerHeight - CANVAS_WINDOW_OFFSET_TOP}
ref={canvas => {
if (this.removeWheelEventListener) {
this.removeWheelEventListener();
this.removeWheelEventListener = undefined;
}
if (canvas) {
canvas.addEventListener("wheel", this.handleWheel, {
passive: false
});
this.removeWheelEventListener = () =>
canvas.removeEventListener("wheel", this.handleWheel);
}
}}
onMouseDown={e => {