import { AiaImageAnnotatorComponent } from '../aia-image-annotator.component';
import { Point } from './point.interface';
import { ContactEvent } from './contact-event';
import { PositionTextPair } from './position-text-pair.interface';
export declare type StateName = 'pencil' | 'text';
export declare abstract class DrawState {
    abstract getName(): StateName;
    abstract contactStart(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    abstract contactMove(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    abstract contactEnd(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    abstract cleanUp(imageAnnotator: AiaImageAnnotatorComponent): void;
}
export declare class PencilState extends DrawState {
    currentCommand: PencilCommand;
    lastCoord: Point;
    /**
     * Draws the next point in the path
     * @param ctx Canvas to be drawn on
     * @param point Next point to draw
     */
    private drawNextPoint;
    getName(): StateName;
    contactStart(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    contactMove(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    contactEnd(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    cleanUp(imageAnnotator: AiaImageAnnotatorComponent): void;
}
export declare class TextState extends DrawState {
    private currentCommand;
    private currentPosition;
    getName(): StateName;
    private generatePositionTextPairs;
    private recordCommandAndReset;
    contactStart(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    contactMove(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    contactEnd(imageAnnotator: AiaImageAnnotatorComponent, ev: ContactEvent): void;
    cleanUp(imageAnnotator: AiaImageAnnotatorComponent): void;
}
export interface DrawCommand {
    draw(ctx: CanvasRenderingContext2D): void;
}
export declare class PencilCommand implements DrawCommand {
    private pathArray;
    private color;
    constructor();
    addPoint(point: Point): void;
    setColor(color: string): void;
    draw(ctx: CanvasRenderingContext2D): void;
}
export declare class TextCommand implements DrawCommand {
    private positionTextPairs;
    private color;
    private font;
    addPositionTextPairs(pairs: PositionTextPair[]): void;
    setColor(color: string): void;
    setFont(font: string): void;
    draw(ctx: CanvasRenderingContext2D): void;
}
export declare class ClearCommand implements DrawCommand {
    private canvasWidth;
    private canvasHeight;
    constructor(canvasWidth: number, canvasHeight: number);
    draw(ctx: CanvasRenderingContext2D): void;
}