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fix: canvas flickering due to resetting canvas on skipped frames (#6960)

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David Luzar 2023-09-05 12:06:48 +02:00 • committed by GitHub
parent 188921c247
commit 27fd150a20
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 19 additions and 4 deletions
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23
src/components/canvases/StaticCanvas.tsx
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@ -37,10 +37,25 @@ const StaticCanvas = (props: StaticCanvasProps) => {
canvas.classList.add("excalidraw__canvas", "static");
}
canvas.style.width = `${props.appState.width}px`;
canvas.style.height = `${props.appState.height}px`;
canvas.width = props.appState.width * props.scale;
canvas.height = props.appState.height * props.scale;
const widthString = `${props.appState.width}px`;
const heightString = `${props.appState.height}px`;
if (canvas.style.width !== widthString) {
canvas.style.width = widthString;
}
if (canvas.style.height !== heightString) {
canvas.style.height = heightString;
}
const scaledWidth = props.appState.width * props.scale;
const scaledHeight = props.appState.height * props.scale;
// setting width/height resets the canvas even if dimensions not changed,
// which would cause flicker when we skip frame (due to throttling)
if (canvas.width !== scaledWidth) {
canvas.width = scaledWidth;
}
if (canvas.height !== scaledHeight) {
canvas.height = scaledHeight;
}
renderStaticScene(
{