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fix: let the img display behind reverse proxy #145

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fix: let the img display behind reverse proxy #145

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8 changes: 4 additions & 4 deletions streamlit_drawable_canvas/frontend/src/DrawableCanvas.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ function getStreamlitBaseUrl(): string | null {
}

try {
return new URL(baseUrl).origin
return new URL(baseUrl).href
} catch {
return null
}
Expand Down Expand Up @@ -127,8 +127,8 @@ const DrawableCanvas = ({ args }: ComponentProps) => {
bgImage.onload = function() {
backgroundCanvas.getContext().drawImage(bgImage, 0, 0);
};
const baseUrl = getStreamlitBaseUrl() ?? ""
bgImage.src = baseUrl + backgroundImageURL
const baseUrl = getStreamlitBaseUrl() ?? "";
bgImage.src = baseUrl.replace(/\/+$/, '') + '/' + backgroundImageURL.replace(/^\/+/, '');
}
}, [
canvas,
Expand All @@ -138,7 +138,7 @@ const DrawableCanvas = ({ args }: ComponentProps) => {
backgroundColor,
backgroundImageURL,
saveState,
])
]);

/**
* If state changed from undo/redo/reset, update user-facing canvas
Expand Down