import { ChartPptxElement, PptxChartData } from 'pptx-viewer-core';
import { ChartPartRef, ChartViewModel } from 'pptx-viewer-shared';
/**
 * View-model resolution for `chart` elements (port of the vanilla binding's
 * `renderChartElement`). The shared `buildChartViewModel` engine does all the
 * chart maths and projects the chart into pure `SvgPrimitive` descriptors;
 * this module only resolves the palette / aspect ratio and lays out the
 * legend so the `ChartView` SFC template stays declarative.
 */
/** Resolved chart view: a renderable view model, or a labelled placeholder. */
export type ChartView = {
    kind: 'chart';
    vm: ChartViewModel;
    preserveAspectRatio: 'none' | 'xMidYMid meet';
} | {
    kind: 'placeholder';
    label: string;
};
/**
 * Resolve the colour palette for a chart, mirroring Vue's `resolveVuePalette`:
 * an explicit parsed `colorPalette` wins, otherwise the style-id palette
 * (which itself falls back to the default chart palette).
 */
export declare function resolveChartPalette(chartData: PptxChartData): string[];
/**
 * Build the renderable view (or placeholder) for a chart element.
 *
 * @param translate - The binding's translator, used for the placeholder
 *   caption. It is optional so the pure unit tests can call this without an
 *   i18n context; a viewer always passes one.
 */
export declare function buildChartView(element: ChartPptxElement, translate?: (key: string, params?: Record<string, string>) => string): ChartView;
/** One positioned legend entry (swatch + label). */
export interface ChartLegendItem {
    key: string;
    transform: string;
    color: string;
    label: string;
    fontSize: number;
    fill: string;
    fontWeight: 'normal' | 'bold';
    fontStyle: 'normal' | 'italic';
    fontFamily?: string;
}
/** Legend layout: a horizontal row, or a vertical stack on the side. */
export declare function buildLegendItems(vm: ChartViewModel): ChartLegendItem[];
/**
 * `data-chart-*` hit-testing attributes for a tagged data-mark primitive.
 * Inert without pointer events; emitted for parity with the other bindings so
 * hosts layering interaction on top can reuse the same shared hit-testing.
 */
export declare function partAttrs(part: ChartPartRef | undefined): Record<string, string>;
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