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fix: prevent browser zoom inside Excalidraw (#5426)

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* fix: prevent browser zoom inside Excalidraw

* prevent default only for =/-
This commit is contained in:
Aakansha Doshi 2022-07-08 17:53:40 +05:30 committed by GitHub
parent e3908e6fe3
commit 5deb93a083
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1 changed files with 19 additions and 1 deletions
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20
src/components/App.tsx
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@ -929,6 +929,7 @@ class App extends React.Component<AppProps, AppState> {
document.removeEventListener(EVENT.COPY, this.onCopy);
document.removeEventListener(EVENT.PASTE, this.pasteFromClipboard);
document.removeEventListener(EVENT.CUT, this.onCut);
document.removeEventListener(EVENT.WHEEL, this.onWheel);
this.nearestScrollableContainer?.removeEventListener(
EVENT.SCROLL,
this.onScroll,
@ -977,6 +978,8 @@ class App extends React.Component<AppProps, AppState> {
this.removeEventListeners();
document.addEventListener(EVENT.POINTER_UP, this.removePointer); // #3553
document.addEventListener(EVENT.COPY, this.onCopy);
document.addEventListener(EVENT.WHEEL, this.onWheel, { passive: false });
if (this.props.handleKeyboardGlobally) {
document.addEventListener(EVENT.KEYDOWN, this.onKeyDown, false);
}
@ -1710,6 +1713,7 @@ class App extends React.Component<AppProps, AppState> {
private onKeyDown = withBatchedUpdates(
(event: React.KeyboardEvent | KeyboardEvent) => {
// normalize `event.key` when CapsLock is pressed #2372
if (
"Proxy" in window &&
((!event.shiftKey && /^[A-Z]$/.test(event.key)) ||
@ -1733,6 +1737,14 @@ class App extends React.Component<AppProps, AppState> {
});
}
// prevent browser zoom in input fields
if (event[KEYS.CTRL_OR_CMD] && isWritableElement(event.target)) {
if (event.code === CODES.MINUS || event.code === CODES.EQUAL) {
event.preventDefault();
return;
}
}
// bail if
if (
// inside an input
@ -1915,6 +1927,13 @@ class App extends React.Component<AppProps, AppState> {
},
);
private onWheel = withBatchedUpdates((event: MouseEvent) => {
// prevent browser pinch zoom on DOM elements
if (!(event.target instanceof HTMLCanvasElement)) {
event.preventDefault();
}
});
private onKeyUp = withBatchedUpdates((event: KeyboardEvent) => {
if (event.key === KEYS.SPACE) {
if (this.state.viewModeEnabled) {
@ -5726,7 +5745,6 @@ class App extends React.Component<AppProps, AppState> {
private handleWheel = withBatchedUpdates((event: WheelEvent) => {
event.preventDefault();
if (isPanning) {
return;
}