import { TimelineScale } from './timeline';
import { TaskEntity, TaskId } from './types';
export interface GanttBarLayout {
    readonly taskId: TaskId;
    readonly x: number;
    readonly width: number;
    readonly progressWidth: number;
    readonly kind: TaskEntity['type'];
}
export interface ProjectedGanttRow extends TaskEntity {
    readonly __gantt: GanttBarLayout;
    readonly __ganttRowIndex: number;
}
/** Compute pixel geometry for a single task bar on a timeline scale. */
export declare function createGanttBarLayout(task: TaskEntity, scale: TimelineScale): GanttBarLayout;
/** Project raw task entities into RevoGrid rows with Gantt layout metadata. */
export declare function projectGanttRows(tasks: readonly TaskEntity[], scale: TimelineScale): readonly ProjectedGanttRow[];
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