/**
 * 选区焦点可视位置
 */
export interface Rect {
    left: number;
    top: number;
    width: number;
    height: number;
}
export interface OverflowClipAncestor {
    element: Element;
    clipX: boolean;
    clipY: boolean;
}
export interface OverflowClipContext {
    /** 自内而外 */
    clipAncestors: OverflowClipAncestor[];
    scrollContainers: Element[];
    /** 嵌套滚动时最近的 overflow 容器 */
    firstScrollContainer: Element;
}
/**
 * 一次遍历祖先链：缓存 overflow 轴信息，并收集滚动监听目标。
 */
export declare function getOverflowClipContext(anchor: Node, extraRoot?: Element): OverflowClipContext;
export interface CaretBoxLayout {
    boxHeight: number;
    rectTop: number;
}
/** 根据行高与内容矩形计算光标盒高度与顶部（视口坐标） */
export declare function measureCaretBoxLayout(contentRect: Rect, style: CSSStyleDeclaration): CaretBoxLayout;
/** 测量行内旋转角度（writing-mode 继承） */
export declare function measureInlineCaretRotate(node: HTMLElement, initialRotate: number, writingMode: string): number;
export interface CaretPresentation {
    outOfView: boolean;
    clipPath: string;
    layoutElRect: Rect;
    position: {
        left: number;
        top: number;
        height: number;
    };
    caretColor: string;
    style: {
        height: string;
        lineHeight: string;
        fontSize: string;
    };
}
export interface ComputeCaretPresentationOptions {
    anchor: HTMLElement;
    maskRect: Rect;
    clipAncestors: OverflowClipAncestor[];
    maskLeft: number;
    maskTop: number;
    boxHeight: number;
    rectTop: number;
    contentRect: Rect;
    fontSize: string;
    color: string;
    measureElementRect: () => Rect;
}
/**
 * 在 element 样式已写入后调用：计算裁剪、是否移出视口及对外事件数据。
 */
export declare function computeCaretPresentation(options: ComputeCaretPresentationOptions): CaretPresentation;
export interface UIElementParams {
    classes?: string[];
    attrs?: {
        [key: string]: any;
    };
    props?: {
        [key: string]: any;
    };
    styles?: {
        [key: string]: any;
    };
    children?: (Node | null)[];
    on?: Record<string, (ev: Event) => void>;
}
export declare function createElement(tagName: string, options?: UIElementParams): HTMLElement;
export declare function getLayoutRectByRange(range: Range): Rect;