/**
 * Schematic sheet safe-region planner.
 *
 * EasyEDA Pro schematic coordinates observed in live MSI testing use a
 * bottom-left-style sheet origin: larger Y values move objects upward on the
 * page. The default A4 title block occupies the lower/right portion of the
 * frame, so hard-coded low-Y coordinates easily collide with the title block.
 *
 * This module is deliberately pure and conservative. It does not resize the
 * sheet; it returns a safe bounding box/anchor or a blocked plan with reasons
 * that callers can surface before applying any writes.
 */
export type SchematicRegionPreference = 'upper-left' | 'upper-center' | 'upper-right' | 'center-left' | 'center' | 'center-right' | 'lower-left' | 'lower-center' | 'lower-right';
export interface SchematicRect {
    x: number;
    y: number;
    width: number;
    height: number;
}
export interface SchematicPoint {
    x: number;
    y: number;
}
export interface SchematicSheetGeometry {
    width: number;
    height: number;
    unit: string;
    origin: 'bottom-left';
    source: 'sheet-info' | 'default-a4-landscape';
}
export interface SafeSchematicRegionPlanInput {
    sheetInfo?: unknown;
    contentWidth: number;
    contentHeight: number;
    preferredRegion?: SchematicRegionPreference;
    margin?: number;
    titleBlockKeepout?: SchematicRect;
}
export interface SafeSchematicRegionPlan {
    blocked: boolean;
    preferredRegion: SchematicRegionPreference;
    sheet: SchematicSheetGeometry;
    usableBounds: SchematicRect;
    requestedBounds: SchematicRect;
    bounds: SchematicRect;
    anchor: SchematicPoint;
    keepouts: Array<SchematicRect & {
        kind: 'title-block';
    }>;
    warnings: string[];
    issues: Array<{
        code: string;
        message: string;
    }>;
}
export declare function inferSchematicSheetGeometry(sheetInfo: unknown): SchematicSheetGeometry;
export declare function defaultTitleBlockKeepout(sheet: SchematicSheetGeometry): SchematicRect;
export declare function rectsOverlap(a: SchematicRect, b: SchematicRect): boolean;
export declare function planSafeSchematicRegion(input: SafeSchematicRegionPlanInput): SafeSchematicRegionPlan;