import type { GlyphId } from "../../types.ts";
import type { Reader } from "../binary/reader.ts";
/**
 * COLR (Color) table parser
 * Defines color glyph layers
 */
export interface ColrTable {
    version: number;
    baseGlyphRecords: BaseGlyphRecord[];
    layerRecords: LayerRecord[];
    baseGlyphPaintRecords?: BaseGlyphPaintRecord[];
    layerList?: Paint[];
    clipList?: ClipRecord[];
    varIdxMap?: number[];
    itemVariationStore?: ItemVariationStore;
}
export interface BaseGlyphRecord {
    glyphId: GlyphId;
    firstLayerIndex: number;
    numLayers: number;
}
export interface LayerRecord {
    glyphId: GlyphId;
    paletteIndex: number;
}
export interface BaseGlyphPaintRecord {
    glyphId: GlyphId;
    paint: Paint;
}
export declare enum PaintFormat {
    ColrLayers = 1,
    Solid = 2,
    VarSolid = 3,
    LinearGradient = 4,
    VarLinearGradient = 5,
    RadialGradient = 6,
    VarRadialGradient = 7,
    SweepGradient = 8,
    VarSweepGradient = 9,
    Glyph = 10,
    ColrGlyph = 11,
    Transform = 12,
    VarTransform = 13,
    Translate = 14,
    VarTranslate = 15,
    Scale = 16,
    VarScale = 17,
    ScaleAroundCenter = 18,
    VarScaleAroundCenter = 19,
    ScaleUniform = 20,
    VarScaleUniform = 21,
    ScaleUniformAroundCenter = 22,
    VarScaleUniformAroundCenter = 23,
    Rotate = 24,
    VarRotate = 25,
    RotateAroundCenter = 26,
    VarRotateAroundCenter = 27,
    Skew = 28,
    VarSkew = 29,
    SkewAroundCenter = 30,
    VarSkewAroundCenter = 31,
    Composite = 32
}
export type Paint = PaintColrLayers | PaintSolid | PaintLinearGradient | PaintRadialGradient | PaintSweepGradient | PaintGlyph | PaintColrGlyph | PaintTransform | PaintTranslate | PaintScale | PaintRotate | PaintSkew | PaintComposite;
export interface PaintColrLayers {
    format: PaintFormat.ColrLayers;
    numLayers: number;
    firstLayerIndex: number;
}
export interface PaintSolid {
    format: PaintFormat.Solid | PaintFormat.VarSolid;
    paletteIndex: number;
    alpha: number;
    varIndexBase?: number;
}
export interface PaintLinearGradient {
    format: PaintFormat.LinearGradient | PaintFormat.VarLinearGradient;
    colorLine: ColorLine;
    x0: number;
    y0: number;
    x1: number;
    y1: number;
    x2: number;
    y2: number;
}
export interface PaintRadialGradient {
    format: PaintFormat.RadialGradient | PaintFormat.VarRadialGradient;
    colorLine: ColorLine;
    x0: number;
    y0: number;
    radius0: number;
    x1: number;
    y1: number;
    radius1: number;
}
export interface PaintSweepGradient {
    format: PaintFormat.SweepGradient | PaintFormat.VarSweepGradient;
    colorLine: ColorLine;
    centerX: number;
    centerY: number;
    startAngle: number;
    endAngle: number;
}
export interface PaintGlyph {
    format: PaintFormat.Glyph;
    paint: Paint;
    glyphId: GlyphId;
}
export interface PaintColrGlyph {
    format: PaintFormat.ColrGlyph;
    glyphId: GlyphId;
}
export interface PaintTransform {
    format: PaintFormat.Transform | PaintFormat.VarTransform;
    paint: Paint;
    transform: Affine2x3;
}
export interface PaintTranslate {
    format: PaintFormat.Translate | PaintFormat.VarTranslate;
    paint: Paint;
    dx: number;
    dy: number;
}
export interface PaintScale {
    format: PaintFormat.Scale | PaintFormat.VarScale | PaintFormat.ScaleAroundCenter | PaintFormat.VarScaleAroundCenter | PaintFormat.ScaleUniform | PaintFormat.VarScaleUniform | PaintFormat.ScaleUniformAroundCenter | PaintFormat.VarScaleUniformAroundCenter;
    paint: Paint;
    scaleX: number;
    scaleY: number;
    centerX?: number;
    centerY?: number;
}
export interface PaintRotate {
    format: PaintFormat.Rotate | PaintFormat.VarRotate | PaintFormat.RotateAroundCenter | PaintFormat.VarRotateAroundCenter;
    paint: Paint;
    angle: number;
    centerX?: number;
    centerY?: number;
}
export interface PaintSkew {
    format: PaintFormat.Skew | PaintFormat.VarSkew | PaintFormat.SkewAroundCenter | PaintFormat.VarSkewAroundCenter;
    paint: Paint;
    xSkewAngle: number;
    ySkewAngle: number;
    centerX?: number;
    centerY?: number;
}
export interface PaintComposite {
    format: PaintFormat.Composite;
    sourcePaint: Paint;
    compositeMode: CompositeMode;
    backdropPaint: Paint;
}
export interface ColorLine {
    extend: Extend;
    colorStops: ColorStop[];
}
export interface ColorStop {
    stopOffset: number;
    paletteIndex: number;
    alpha: number;
}
export declare enum Extend {
    Pad = 0,
    Repeat = 1,
    Reflect = 2
}
export declare enum CompositeMode {
    Clear = 0,
    Src = 1,
    Dest = 2,
    SrcOver = 3,
    DestOver = 4,
    SrcIn = 5,
    DestIn = 6,
    SrcOut = 7,
    DestOut = 8,
    SrcAtop = 9,
    DestAtop = 10,
    Xor = 11,
    Plus = 12,
    Screen = 13,
    Overlay = 14,
    Darken = 15,
    Lighten = 16,
    ColorDodge = 17,
    ColorBurn = 18,
    HardLight = 19,
    SoftLight = 20,
    Difference = 21,
    Exclusion = 22,
    Multiply = 23,
    Hue = 24,
    Saturation = 25,
    Color = 26,
    Luminosity = 27
}
export interface Affine2x3 {
    xx: number;
    yx: number;
    xy: number;
    yy: number;
    dx: number;
    dy: number;
}
export interface ClipRecord {
    startGlyphId: GlyphId;
    endGlyphId: GlyphId;
    clipBox: ClipBox;
}
export interface ClipBox {
    format: number;
    xMin: number;
    yMin: number;
    xMax: number;
    yMax: number;
    varIndexBase?: number;
}
export interface ItemVariationStore {
    format: number;
    variationRegionListOffset: number;
    itemVariationDataCount: number;
    itemVariationDataOffsets: number[];
    variationRegions: VariationRegion[];
    itemVariationData: ItemVariationData[];
}
export interface VariationRegion {
    regionAxes: RegionAxisCoordinates[];
}
export interface RegionAxisCoordinates {
    startCoord: number;
    peakCoord: number;
    endCoord: number;
}
export interface ItemVariationData {
    itemCount: number;
    wordDeltaCount: number;
    regionIndexCount: number;
    regionIndexes: number[];
    deltaSets: number[][];
}
export interface VarColorLine extends ColorLine {
    varIndexBase?: number;
}
export interface VarColorStop extends ColorStop {
    varIndexBase?: number;
}
/**
 * Parse COLR table - color glyph definitions with layered or gradient fills
 * Supports both v0 (simple layers) and v1 (advanced paint operations)
 * @param reader - Reader positioned at start of COLR table
 * @returns Parsed COLR table with color layer and paint definitions
 */
export declare function parseColr(reader: Reader): ColrTable;
/**
 * Get color layers for a glyph (v0)
 */
export declare function getColorLayers(colr: ColrTable, glyphId: GlyphId): LayerRecord[] | null;
/**
 * Get paint for a glyph (v1)
 */
export declare function getColorPaint(colr: ColrTable, glyphId: GlyphId): Paint | null;
/**
 * Check if glyph has color data
 */
export declare function hasColorGlyph(colr: ColrTable, glyphId: GlyphId): boolean;
/**
 * Get clip box for a glyph
 */
export declare function getClipBox(colr: ColrTable, glyphId: GlyphId): ClipBox | null;
/**
 * Calculate variation delta for a paint value
 */
export declare function getColorVariationDelta(colr: ColrTable, varIndex: number, coords: number[]): number;
/**
 * Check if COLR table is version 1
 */
export declare function isColrV1(colr: ColrTable): boolean;
/**
 * Get the paint layer at a specific index from the layer list
 */
export declare function getLayerPaint(colr: ColrTable, index: number): Paint | null;