import { Commit } from '../../types/Commit';
export interface ThemeFunctions {
    /**
     * The current active theme mode.
     * @example light, dark
     */
    theme: ThemeMode;
    /**
     * An rgb() colour string for
     * text that is being hovered over
     * relative to the currently active
     * {@link theme}.
     */
    hoverColour: string;
    /**
     * An rgb() colour string for
     * text relative to the currently
     * active {@link theme}.
     */
    textColour: string;
    /**
     * An rgb() colour string for
     * background of a tooltip relative
     * to the currently active {@link theme}.
     */
    getTooltipBackground: (commit: Commit) => string;
    /**
     * The duration, in milliseconds, of
     * the animation for hover transition
     * effects.
     */
    hoverTransitionDuration: number;
    /**
     * Blends an RGB color with a background color to simulate an alpha effect.
     *
     * This function adjusts the given RGB color as if it were semi-transparent over a background,
     * without actually using an alpha channel. The result is a new solid RGB color that appears
     * visually similar to an `rgba()` color with transparency.
     *
     * @param rgb - The colour to shift in `rgb(r, g, b)` format.
     * @param opacity - The simulated alpha channel (range: `0` to `1`).
     * @returns The blended color in `rgb(r, g, b)` format.
     *
     * @example
     * ```ts
     * blendColorWithBackground('rgb(100, 200, 255)', 0.5) // "rgb(50, 100, 128)" (darker blue)
     * blendColorWithBackground('rgb(100, 200, 255)', 0.5) // "rgb(178, 228, 255)" (lighter blue)
     * ```
     */
    shiftAlphaChannel: (rgb: string, opacity: number) => string;
    /**
     * Reduces the opacity of the given RGB colour string.
     *
     * @param rbg The colour to reduce the opacity of. Must be in rgb(x, y, z) format.
     * @param opacity The desired opacity value from 0 to 1.
     */
    reduceOpacity: (rbg: string, opacity: number) => string;
    /**
     * Gets an rgb() colour string for the
     * given {@link Commit} relative to the
     * given colours of the git log.
     *
     * @param commit The commit to get the colour for.
     */
    getCommitColour: (commit: Commit) => string;
    /**
     * Gets an rgb() colour string for the
     * given column index relative to the
     * given colours of the git log.
     *
     * @param columnIndex The index to get the colour for.
     */
    getGraphColumnColour: (columnIndex: number) => string;
    /**
     * Gets rgb() colour strings for styling a commit node
     * from the given base column colour.
     *
     * @param args Args to get the colour.
     */
    getCommitNodeColours: (args: GetCommitNodeColoursArgs) => CommitNodeColours;
    /**
     * Gets an rgb() colour string for the background
     * colour of a graph column when its row is selected.
     *
     * @param columnIndex The index of the column where the node is.
     */
    getGraphColumnSelectedBackgroundColour: (columnIndex: number) => string;
}
export interface GetCommitNodeColoursArgs {
    columnColour: string;
}
export interface CommitNodeColours {
    backgroundColour: string;
    borderColour: string;
}
export type ThemeMode = 'light' | 'dark';
/**
 * The default theme renders merge nodes
 * with a different theme to make them
 * more distinct from regular commits.
 *
 * The plain theme renders all nodes
 * (except the index pseudo-node) the same.
 */
export type NodeTheme = 'default' | 'plain';
/**
 * Determines how the breakpoints (the styling of
 * the node edges in the graph if a filter is active
 * and is causing breaks in the graph) are rendered.
 */
export type BreakPointTheme = 'slash' | 'dot' | 'ring' | 'zig-zag' | 'line' | 'double-line' | 'arrow';
export type ThemeColours = 'rainbow-dark' | 'rainbow-light' | 'neon-aurora-dark' | 'neon-aurora-light';
export declare const neonAuroraDarkColours: string[];
export declare const neonAuroraLightColours: string[];