src/vs/editor/browser/viewParts/overviewRuler/overviewRuler.ts/OverviewRuler/onConfigurationChanged
class OverviewRuler:	public override onConfigurationChanged(e: viewEvents.ViewConfigurationChangedEvent): boolean {
		const options = this._context.configuration.options;

		if (e.hasChanged(EditorOption.lineHeight)) {
			this._zoneManager.setLineHeight(options.get(EditorOption.lineHeight));
			this._render();
		}

		if (e.hasChanged(EditorOption.pixelRatio)) {
			this._zoneManager.setPixelRatio(options.get(EditorOption.pixelRatio));
			this._domNode.setWidth(this._zoneManager.getDOMWidth());
			this._domNode.setHeight(this._zoneManager.getDOMHeight());
			this._domNode.domNode.width = this._zoneManager.getCanvasWidth();
			this._domNode.domNode.height = this._zoneManager.getCanvasHeight();
			this._render();
		}

		return true;
	}