declare namespace Ext {
    export namespace draw {
        export namespace engine {
            export interface CanvasConfig {
                background?: object;
                baseCls?: string | boolean;
                bind?: object | string;
                border?: boolean;
                cls?: string | string[];
                controller?: string | object | Ext.app.ViewController;
                defaultListenerScope?: boolean;
                dirty?: boolean;
                flipRtlText?: boolean;
                height?: number | string;
                hidden?: boolean;
                highPrecision?: boolean;
                items?: [];
                listeners?: object;
                plugins?: object | string | object[] | string[];
                publishes?: string | string[] | object;
                rect?: [];
                reference?: string;
                session?: boolean | object | Ext.data.Session;
                style?: string | object;
                touchAction?: object;
                twoWayBindable?: string | string[] | object;
                ui?: string | string[];
                userCls?: string | string[];
                viewModel?: string | object | Ext.app.ViewModel;
                width?: number | string;
            }

            export class Canvas extends Ext.draw.Surface  {
                public appendPath(path?: object): void;
                public arc(x?: object, y?: object, radius?: object, startAngle?: object, endAngle?: object, anticlockwise?: object): void;
                public arcTo(x1?: object, y1?: object, x2?: object, y2?: object, radius?: object): void;
                public bezierCurveTo(c1x?: object, c1y?: object, c2x?: object, c2y?: object, x?: object, y?: object): any;
                public clearRect(x?: object, y?: object, w?: object, h?: object): void;
                public clearTransform(): void;
                public createLinearGradient(x0?: object, y0?: object, x1?: object, y1?: object): any;
                public createRadialGradient(x0?: object, y0?: object, r0?: object, x1?: object, y1?: object, r1?: object): any;
                public drawImage(img_elem?: object, arg1?: object, arg2?: object, arg3?: object, arg4?: object, dst_x?: object, dst_y?: object, dw?: object, dh?: object): any;
                public ellipse(cx?: object, cy?: object, rx?: object, ry?: object, rotation?: object, start?: object, end?: object, anticlockwise?: object): void;
                public fill(): void;
                public fillRect(x?: object, y?: object, w?: object, h?: object): void;
                public fillStroke(attr?: object, transformFillStroke?: object): void;
                public fillText(text?: object, x?: object, y?: object, maxWidth?: object): void;
                public getHighPrecision(): void;
                public lineTo(x?: object, y?: object): void;
                public moveTo(x?: object, y?: object): void;
                public quadraticCurveTo(cx?: object, cy?: object, x?: object, y?: object): any;
                public rect(x?: object, y?: object, w?: object, h?: object): any;
                public restore(): void;
                public rotate(radians?: object): any;
                public save(): void;
                public scale(sx?: object, sy?: object): any;
                public setGradientBBox(bbox?: object): void;
                public setHighPrecision(): void;
                public setLineDash(dashList?: object): void;
                public setTransform(x2x?: object, x2y?: object, y2x?: object, y2y?: object, newDx?: object, newDy?: object): void;
                public stroke(): void;
                public strokeRect(x?: object, y?: object, w?: object, h?: object): void;
                public strokeText(text?: object, x?: object, y?: object, maxWidth?: object): void;
                public transform(x2x?: object, x2y?: object, y2x?: object, y2y?: object, newDx?: object, newDy?: object): void;
                public translate(dx?: object, dy?: object): any;
                public updatePrecisionCompensate(): void;
                public updatePrecisionCompensateRect(): void;
                public updateRect(rect?: object): void;
            }
        }
    }
}