import { Observable } from 'rxjs';
import { GameStateService } from '../game-state/game-state.service';
import { GameImage2D } from '../../interfaces/game/image-2d';
import { GameFont } from '../../interfaces/game/font';
export declare class Graphics2dService {
    private gameState;
    private _canvas;
    private _context2d;
    constructor(gameState: GameStateService);
    initCanvas(canvas: any): void;
    initGraphics(width: number, height: number): Observable<void>;
    private loadActiveColor;
    private loadActiveClsColor;
    private getOrigin;
    private getActiveViewport;
    cls(): Observable<void>;
    line(beginX: number, beginY: number, endX: number, endY: number): Observable<void>;
    rect(x: number, y: number, width: number, height: number, filled: boolean): Observable<void>;
    oval(x: number, y: number, width: number, height: number, filled: boolean): Observable<void>;
    plot(x: number, y: number): Observable<void>;
    maskImage(image: GameImage2D, red: number, green: number, blue: number): Observable<void>;
    drawBlock(image: GameImage2D, x: number, y: number, frame?: number): Observable<void>;
    tileBlock(image: GameImage2D, x: number, y: number, frame?: number): Observable<void>;
    drawImage(image: GameImage2D, x: number, y: number, frame?: number): Observable<void>;
    text(x: number, y: number, text: string, centerX?: boolean, centerY?: boolean): Observable<void>;
    setFont(font: GameFont): Observable<void>;
    fontAscent(font: GameFont): Observable<number>;
    fontDescent(font: GameFont): Observable<number>;
    fontWidth(): Observable<number>;
    stringWidth(text: string): Observable<number>;
    stringHeight(): Observable<number>;
}