/// <reference types="node" resolution-mode="require"/>
/** Image to be used in {@link ui}. */
export declare class UiImage {
    _id: number;
    constructor(id: number);
    /** Manually mark this image as no longer needed */
    free(): void;
}
/** Simple text */
export declare const text: (text: string) => void;
/** Label for the next UI element */
export declare const label: (text: string) => void;
/**
 * Simple button
 * @param label Label for the button.
 * @returns `true` when pressed this frame.
 *
 * @example
 * In a draw function of a plugin, use as follows:
 * ```ts
 * if(ui.button('Click me!')) {
 *     console.log('You clicked the button.');
 * }
 * ```
 */
export declare const button: (label: string) => boolean;
/**
 * Load a ui image. Any format supported by the editor is supported.
 *
 * @param filepath Path to the file.
 * @returns Promise with the loaded UiImage
 *
 * @example
 * In a draw function of a plugin, use as follows:
 * ```ts
 * this.thumbnail = null;
 * loadImage(fs.readFileSync("cache/plugins/my-plugin/downloads/thumbnail.png"))
 *     .then((img) => this.thumbnail = img);
 * ```
 *
 * @see image()
 */
export declare function loadImage(data: ArrayBuffer | Buffer): Promise<UiImage>;
export declare function image(image: UiImage, width: number, height: number): boolean;
/**
 * Text input field.
 *
 * @param label Label to display next to the field.
 * @param value Current value to set the field to.
 * @returns The new string value when changed by the user this frame, otherwise `null`.
 *
 * @example
 *     s = ui.inputText("change this:", s) || s;
 */
export declare const inputText: (label: string, value: string) => string | null;
/**
 * Text input field multi line.
 *
 * @param widgetId Unique id for the widget.
 * @param value Current value to set the field to.
 * @returns The new string value when changed by the user this frame, otherwise `null`.
 *
 * @example
 *     s = ui.inputTextMultiline("change this:", s) || s;
 */
export declare const inputTextMultiline: (widgetId: string, value: string) => string | null;
/**
 * Checkbox.
 *
 * @param label Label to display next to the checkbox.
 * @param value Current value to set the checkbox to.
 * @returns The new boolean value when changed by the user this frame, otherwise `null`.
 *
 * @example
 *     const n = ui.checkbox("change this:", myBool);
 *     if(n !== null) myBool = n;
 */
export declare const checkbox: (label: string, value: boolean) => boolean | null;
/**
 * Color picker for RGBA color.
 *
 * @param label Label to display next to the picker.
 * @param value Value to be in-place edited.
 * @returns `true` if changed by the user this frame, `false` otherwise.
 *
 * @example
 *     const col = new Float32Array(4);
 *     if(ui.colorEdit4("My color:", col)) {
 *         console.log("Changed!");
 *     }
 */
export declare const colorEdit4: (label: string, value: Float32Array) => boolean;
/**
 * Dummy element (space).
 *
 * @param width Width of the dummy element
 * @param height Height of the dummy element
 */
export declare const dummy: (width: number, height: number) => void;
/**
 * Draw next widget on the same line.
 *
 * @param offset Offset on the x axis.
 */
export declare const sameLine: (offset?: number) => void;
/** Separator line. */
export declare const separator: () => void;
/** Begin a widget group. */
export declare const beginGroup: () => void;
/** End a widget group. */
export declare const endGroup: () => void;
/** Spinner to indicate loading. */
export declare const spinner: () => void;
/**
 * Draggable float input
 * @param label Label for the input.
 * @param value Current value.
 * @returns The new value when changed by the user this frame, otherwise `null`.
 *
 * @example
 *     let myFloat = 0;
 *     const n = ui.inputFloat("change this:", myFloat);
 *     if(n !== null) myFloat = n;
 */
export declare const inputFloat: (label: string, value: number) => number | null;
/**
 * Draggable float3 input
 * @param label Label for the input.
 * @param value Current value.
 * @returns `true` if changed by the user this frame, `false` otherwise.
 *
 * @example
 *     const myFloat3 = new Float32Array(3);
 *     if(ui.inputFloat3("change this:", myFloat3)) {
 *        console.log("changed");
 *     }
 */
export declare const inputFloat3: (label: string, value: Float32Array) => boolean;
/**
 * Draggable int input
 * @param label Label for the input.
 * @param value Current value.
 * @returns The new value when changed by the user this frame, otherwise `null`.
 *
 * @example
 *     let myInt = 0;
 *     const n = ui.inputInt("change this:", myInt);
 *     if(n !== null) myInt = n;
 */
export declare const inputInt: (label: string, value: number) => number | null;
/**
 * Draggable int3 input
 * @param label Label for the input.
 * @param value Current value.
 * @returns `true` if changed by the user this frame, `false` otherwise.
 *
 * @example
 *     const myInt3 = new Int32Array(3);
 *     if(ui.inputInt3("change this:", myInt3)) {
 *        console.log("changed");
 *     }
 */
export declare const inputInt3: (label: string, value: Int32Array) => boolean;