import { LineRange, VisibleLineWindow } from './pretext';
import { LayoutMode } from './renderer';
export type ReflowablePageFitMode = 'auto' | 'paper' | 'viewport';
export interface ReflowableColumnLayout {
    margin: number;
    gap: number;
    columnWidth: number;
    columns: number;
    pageHeight: number;
    pageFrameHeight?: number;
    pageFrameTop?: number;
    columnHeight: number;
    pagePaddingInline: number;
    pagePaddingInlineStart?: number;
    pagePaddingInlineEnd?: number;
    pagePaddingBlock: number;
    pagePaddingBlockStart?: number;
    pagePaddingBlockEnd?: number;
    pageFit?: Exclude<ReflowablePageFitMode, 'auto'>;
    totalHeight: number;
    pageCount: number;
}
export interface ReflowablePageGeometryOptions {
    readonly layoutMode: LayoutMode;
    readonly maxColumnCount: number;
    readonly availableInlineSize: number;
    readonly availableBlockSize: number;
    readonly gap: number;
    readonly minColumnWidth: number;
    readonly maxColumnWidth: number;
    readonly pagePaddingInline: number;
    readonly pagePaddingBlock: number;
    readonly pageFit?: ReflowablePageFitMode;
    readonly usePaperPadding?: boolean;
}
export interface ReflowablePageGeometry {
    readonly columns: number;
    readonly columnWidth: number;
    readonly inlineSize: number;
    readonly pageHeight: number;
    readonly pageFrameHeight: number;
    readonly pageFrameTop: number;
    readonly pagePaddingInline: number;
    readonly pagePaddingInlineStart: number;
    readonly pagePaddingInlineEnd: number;
    readonly pagePaddingBlock: number;
    readonly pagePaddingBlockStart: number;
    readonly pagePaddingBlockEnd: number;
    readonly pageFit: Exclude<ReflowablePageFitMode, 'auto'>;
}
export interface ReflowableViewportMetrics {
    readonly scrollTop: number;
    readonly scrollHeight: number;
    readonly clientHeight: number;
}
export interface ReflowableSourceViewport {
    readonly sourceScrollTop: number;
    readonly sourceViewportHeight: number;
}
export declare function resolveReflowablePageGeometry(options: ReflowablePageGeometryOptions): ReflowablePageGeometry;
export declare function getReflowableColumnInlinePadding(layout: ReflowableColumnLayout, columnIndex: number): {
    start: number;
    end: number;
};
export declare function getReflowableColumnIndexForLeft(layout: ReflowableColumnLayout, left: number): number;
export declare function getReflowableBlockPaddingStart(layout: ReflowableColumnLayout): number;
export declare function getReflowableBlockPaddingEnd(layout: ReflowableColumnLayout): number;
export declare function getRenderedReflowableLinePosition(line: LineRange, layout: ReflowableColumnLayout, layoutMode: LayoutMode): {
    top: number;
    left: number;
};
export declare function getReflowableSourceViewport(layoutMode: LayoutMode, layout: ReflowableColumnLayout, metrics: ReflowableViewportMetrics, pageIndex: number): ReflowableSourceViewport;
export declare function getReflowableSourceScrollTop(layoutMode: LayoutMode, layout: ReflowableColumnLayout, metrics: ReflowableViewportMetrics, pageIndex: number): number;
export declare function getReflowableSourceViewportHeight(layoutMode: LayoutMode, layout: ReflowableColumnLayout, metrics: ReflowableViewportMetrics): number;
export declare function getReflowableSectionFraction(layoutMode: LayoutMode, layout: ReflowableColumnLayout, metrics: ReflowableViewportMetrics, pageIndex: number): number;
export declare function getReflowableScrollTopForSourceTop(sourceTop: number, layoutMode: LayoutMode, layout: ReflowableColumnLayout): number;
export declare function getReflowableScrollTopForFraction(layoutMode: LayoutMode, layout: ReflowableColumnLayout, metrics: ReflowableViewportMetrics, fraction: number): number;
export declare function getReflowablePageIndexForScrollTop(layout: ReflowableColumnLayout, scrollTop: number): number;
export declare function getReflowablePageScrollTop(layout: ReflowableColumnLayout, pageIndex: number): number;
export declare function clampReflowablePageIndex(pageIndex: number, layout: ReflowableColumnLayout): number;
export declare function findReadableReflowablePage(lines: readonly LineRange[], layoutMode: LayoutMode, layout: ReflowableColumnLayout, pageIndex: number, direction: -1 | 0 | 1): number | null;
export declare function hasReadableLinesOnReflowablePage(lines: readonly LineRange[], layout: ReflowableColumnLayout, pageIndex: number): boolean;
export declare function getReflowableSourceHeightForPages(layoutMode: LayoutMode, layout: ReflowableColumnLayout, metrics: ReflowableViewportMetrics, pageCount: number): number;
export declare function getReflowableVisibleLineWindow(lines: readonly LineRange[], layoutMode: LayoutMode, layout: ReflowableColumnLayout, metrics: ReflowableViewportMetrics, pageIndex: number, overscan?: number): VisibleLineWindow;
//# sourceMappingURL=reflowable-page-model.d.ts.map