import { AfterViewInit, ElementRef, EventEmitter } from '@angular/core';
import { ControlValueAccessor } from '@angular/forms';
import { NbinputConfig, SystemAttachment } from './nbinput.entity';
import { NbinputUploadService } from './nbinput-upload';
export declare class NbinputSignComponent implements AfterViewInit, ControlValueAccessor {
    private uploader;
    config: NbinputConfig;
    private onTouchedCallback;
    private onChangeCallback;
    writeValue(val: SystemAttachment): void;
    registerOnChange(fn: any): void;
    registerOnTouched(fn: any): void;
    setDisabledState?(isDisabled: boolean): void;
    scaleRatio(canvasWidth: number, canvasHeight: number, imageWidth: number, imageHeight: number): {
        width: number;
        height: number;
    };
    bgImage: string;
    data: any;
    canvas: ElementRef;
    background: ElementRef;
    onResize(): void;
    disabled: any;
    readonly: boolean;
    isDraw: boolean;
    editable: boolean;
    switchEditable(): void;
    getTrimedImage(): string;
    onSubmit: EventEmitter<any>;
    submit(val: SystemAttachment): void;
    private cx;
    private bg;
    ngAfterViewInit(): void;
    private captureEvents;
    private drawOnCanvas;
    initBackground(w: number, h: number): void;
    clearCanvas(): void;
    type: any;
    fileInput: ElementRef;
    uploadImage(e: any): void;
    chooseImage(e: any): void;
    constructor(uploader: NbinputUploadService);
}