export interface CameraView {
    panX: number;
    panY: number;
    zoom: number;
}
export interface CameraViewport {
    width: number;
    height: number;
    insetLeft?: number;
    insetRight?: number;
    insetTop?: number;
    insetBottom?: number;
}
export interface CameraFrameRect {
    x: number;
    y: number;
    width: number;
    height: number;
}
export interface CameraScreenRect {
    left: number;
    top: number;
    width: number;
    height: number;
}
/** Convert a rendered DOM rectangle back into infinite-canvas coordinates. */
export declare function canvasRectFromScreenRect(rect: CameraScreenRect, viewport: Pick<CameraScreenRect, 'left' | 'top'>, camera: CameraView): CameraFrameRect | null;
/** Fixed initial view of the new canvas. It has nothing to do with frame/iframe/viewport geometry. */
export declare const DEFAULT_CANVAS_CAMERA_VIEW: Readonly<CameraView>;
/**
 * The only automatic view decisions allowed when switching canvases:
 * If there is a previous user view, it is restored. If not, a fixed default value is used.
 * Because it does not receive asynchronous geometry or viewport as input, ready cannot move the camera.
 */
export declare function resolveCanvasCameraView(saved: CameraView | null | undefined): CameraView;
/**
 * Camera placement only used when the user explicitly requests movement in the frame list.
 * Align and center the frame within the viewport, excluding the area covered by the panel.
 */
export declare function resolveFrameFocusCameraView(frame: CameraFrameRect, viewport: CameraViewport, options?: {
    padding?: number;
    minZoom?: number;
    maxZoom?: number;
}): CameraView;
/**
 * Reveals a sidebar-selected frame with the smallest possible pan adjustment.
 * The user's zoom is never changed, and an already visible frame does not move
 * the camera. Explicit fit commands continue to use resolveFrameFocusCameraView.
 */
export declare function resolveFrameRevealCameraView(frame: CameraFrameRect, viewport: CameraViewport, current: CameraView, options?: {
    padding?: number;
    tolerance?: number;
}): CameraView;