export interface WidgetBounds {
    width: number;
    height: number;
    pad: number;
    innerWidth: number;
    innerHeight: number;
    dialSize: number;
}
/** Resolve widget box from props — dials use dialSize, panels use width/height. */
export declare function resolveBounds(props: Record<string, unknown>, defaultWidth: number, defaultHeight: number, pad?: number): WidgetBounds;
/** True when widget should use compact LCD layout instead of analog dial. */
export declare function isCompactBounds(bounds: WidgetBounds): boolean;
/** Estimate rendered text width for automotive monospace/sans labels. */
export declare function estimateTextWidth(text: string, fontSize: number): number;
/** Estimate left-x so text fits inside a box (avoids center-anchor bounds overflow). */
export declare function fitTextX(text: string, fontSize: number, boxW: number, pad?: number): number;
/** Shrink font until text fits inside a box; returns centered left-x. */
export declare function fitFontSizeToWidth(text: string, boxW: number, maxSize: number, minSize?: number, pad?: number): {
    fontSize: number;
    x: number;
};
/** Convert a desired anchor y into canvas top-y (renderer uses textBaseline top). */
export declare function textYForBaseline(y: number, fontSize: number, baseline?: CanvasTextBaseline): number;
/** Centered text with stable box for HTML + bounds. */
export declare function autoCenteredText(app: import('../App').App, text: string, boxW: number, y: number, options?: {
    fontSize?: number;
    fontWeight?: string;
    fill?: string;
    fontFamily?: string;
    textBaseline?: CanvasTextBaseline;
    insetX?: number;
    insetY?: number;
}): import("..").TextNode;
export declare function fluidFont(base: number, bounds: WidgetBounds, min?: number, max?: number): number;
export declare function centerInBounds(bounds: WidgetBounds, contentW: number, contentH: number): {
    x: number;
    y: number;
};
export type GaugeDisplay = 'analog' | 'digital';
/** Resolve analog needle dial vs digital LCD readout. */
export declare function resolveDisplay(props: Record<string, unknown>, fallback?: GaugeDisplay): GaugeDisplay;
export interface ClusterSlot {
    type: string;
    x: number;
    y: number;
    width: number;
    height: number;
    size?: number;
}
export interface ClusterLayoutOptions {
    callScreen?: boolean;
}
/** Proportional instrument-cluster layout — all child widgets scale to cluster bounds. */
export declare function resolveClusterLayout(rawW: number, rawH: number, options?: ClusterLayoutOptions): ClusterSlot[];