import { TcHmiControl } from 'Beckhoff.TwinCAT.HMI.Framework/index.esm.js';
declare class TcHmiImage extends TcHmiControl.Control {
    #private;
    constructor(element: JQuery, pcElement: JQuery, attrs: TcHmi.Controls.ControlAttributeList);
    /** Reference to the underlying html img element */
    protected __elementImage: HTMLImageElement;
    /**
     * Internal reference to the attribute "tchmi-src"
     * Possible Values: Relative path to the target image file based on the project directory as root.
     */
    protected __src: string | null | undefined;
    /**
     * Internal reference to the attribute "tchmi-alt"
     */
    protected __alt: string | undefined;
    private __runtimeWidthNeededForHeight;
    private __runtimeHeightNeededForWidth;
    protected __onResizedEventDestroyEvent: TcHmi.DestroyFunction | null;
    protected __asyncWorkData: IControlSpecificData;
    /**
     * If raised, the control object exists in control cache and constructor of each inheritation level was called.
     * This function is only to be used by the System. Other function calls are not intended.
     */
    __previnit(): void;
    /**
     * If raised, all attributes have been set to it's default or dom values.
     * This function is only to be used by the System. Other function calls are not intended.
     */
    __init(): void;
    /**
     * Is called by the system after the control instance gets part of the current DOM.
     * This function is only to be used by the System. Other function calls are not intended.
     */
    __attach(): void;
    /**
     * Is called by the system after the control instance is no longer part of the current DOM.
     * This function is only to be used by the System. Other function calls are not intended.
     */
    __detach(): void;
    /**
     * Destroy the current control instance.
     * Will be called automatically if system destroys control!
     */
    destroy(): void;
    protected __onResized(_event: TcHmi.EventProvider.Event, _control: TcHmiControl.Control): void;
    protected __doAsyncWork(timestamp?: number): void;
    /**
     * Processes the current width and width unit.
     */
    __processWidth(): void;
    /**
     * Processes the current height and height unit.
     */
    __processHeight(): void;
    /**
     * Sets the value of the width mode attribute.
     * @param valueNew The new width mode value..
     */
    setWidthMode(valueNew: TcHmi.SizeModeWithContent | null): void;
    /**
     * Sets the value of the height mode attribute.
     * @param valueNew The new height mode value..
     */
    setHeightMode(valueNew: TcHmi.SizeModeWithContent | null): void;
    __getContentWidth(): null | number;
    __getContentHeight(): null | number;
    /**
     * @returns The original width of the image.
     */
    getOriginalWidth(): number;
    /**
     * @returns The original height of the image.
     */
    getOriginalHeight(): number;
    /**
     * Loads Image if access is now possible
     */
    __processAccessConfig(): void;
    /**
     * Loads Image if access is now possible
     */
    __processIsEnabled(): void;
    /**
     * Sets the src attribute to a new value.
     * @param valueNew The new value for the src attribute;
     */
    setSrc(valueNew: string | null): void;
    /**
     * @returns The current value of the src attribute.
     */
    getSrc(): string | null | undefined;
    /**
     * Processes the current value of attribute src.
     */
    protected __processSrc(): void;
    /**
     * Sets the alt attribute to a new value.
     * @param valueNew The new value for the alt attribute;
     */
    setAlt(valueNew: string | null): void;
    /**
     * @returns The current value of the alt attribute.
     */
    getAlt(): string | undefined;
    /**
     * Processes the current value of attribute alt.
     */
    protected __processAlt(): void;
    /**
     * Is raised if the load event is raised
     */
    protected __onLoad(event: Event): void;
    /**
     * Is raised if the error event is raised
     */
    protected __onError(event: ErrorEvent): void;
}
export interface IControlSpecificData extends TcHmiControl.IControlSpecificData {
    'System.TcHmiImage.resized': boolean;
}
export { TcHmiImage as Control };
declare const _TcHmiImage: typeof TcHmiImage;
type tTcHmiImage = TcHmiImage;
type tIControlSpecificData = IControlSpecificData;
declare global {
    namespace TcHmi.Controls.Beckhoff {
        const TcHmiImage: typeof _TcHmiImage;
        type TcHmiImage = tTcHmiImage;
        namespace TcHmiImage {
            type IControlSpecificData = tIControlSpecificData;
        }
    }
}
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