phaser/Phaser/Stage.ts

/// <reference path="Game.ts" />
/// <reference path="geom/Point.ts" />
/// <reference path="geom/Rectangle.ts" />
/// <reference path="system/StageScaleMode.ts" />

class Stage {

    constructor(game:Game, parent:string, width: number, height: number) {

        this._game = game;

        this.canvas = <HTMLCanvasElement> document.createElement('canvas');
        this.canvas.width = width;
        this.canvas.height = height;

        if (document.getElementById(parent))
        {
            document.getElementById(parent).appendChild(this.canvas);
            document.getElementById(parent).style.overflow = 'hidden';
        }
        else
        {
            document.body.appendChild(this.canvas);
        }

        this.context = this.canvas.getContext('2d');

        this.offset = this.getOffset(this.canvas);
        this.bounds = new Rectangle(this.offset.x, this.offset.y, width, height);
        this.aspectRatio = width / height;
        this.scaleMode = StageScaleMode.NO_SCALE;
        this.scale = new StageScaleMode(this._game);

        //document.addEventListener('visibilitychange', (event) => this.visibilityChange(event), false);
        //document.addEventListener('webkitvisibilitychange', (event) => this.visibilityChange(event), false);
        window.onblur = (event) => this.visibilityChange(event);
        window.onfocus = (event) => this.visibilityChange(event);

    }

    private _game: Game;
    private _bgColor: string;


    public static ORIENTATION_LANDSCAPE:number = 0;
    public static ORIENTATION_PORTRAIT:number = 1;

    public bounds: Rectangle;
    public aspectRatio: number;
    public clear: bool = true;
    public canvas: HTMLCanvasElement;
    public context: CanvasRenderingContext2D;
    public offset: Point;
    public scale: StageScaleMode;
    public scaleMode: number;
    
    public minScaleX: number = null;
    public maxScaleX: number = null;
    public minScaleY: number = null;
    public maxScaleY: number = null;
    
    public update() {

        this.scale.update();

        if (this.clear)
        {
            //  implement dirty rect? could take up more cpu time than it saves. needs benching.
            this.context.clearRect(0, 0, this.width, this.height);
        }

    }

    public renderDebugInfo() {

        this.context.fillStyle = 'rgb(255,255,255)';
        this.context.fillText(Game.VERSION, 10, 20);
        this.context.fillText('Game Size: ' + this.width + ' x ' + this.height, 10, 40);
        this.context.fillText('x: ' + this.x + ' y: ' + this.y, 10, 60);

    }

    private visibilityChange(event) {

        if (event.type == 'blur' && this._game.pause == false && this._game.isBooted == true)
        {
            this._game.pause = true;
            this.drawPauseScreen();
        }
        else if (event.type == 'focus')
        {
            this._game.pause = false;
        }

        //if (document['hidden'] === true || document['webkitHidden'] === true)

    }

    public drawInitScreen() {

        this.context.fillStyle = 'rgb(40, 40, 40)';
        this.context.fillRect(0, 0, this.width, this.height);

        this.context.fillStyle = 'rgb(255,255,255)';
        this.context.font = 'bold 18px Arial';
        this.context.textBaseline = 'top';
        this.context.fillText(Game.VERSION, 54, 32);
        this.context.fillText('Game Size: ' + this.width + ' x ' + this.height, 32, 64);
        this.context.fillText('www.photonstorm.com', 32, 96);
        this.context.font = '16px Arial';
        this.context.fillText('You are seeing this screen because you didn\'t specify any default', 32, 160);
        this.context.fillText('functions in the Game constructor, or use Game.loadState()', 32, 184);

        var image = new Image();
        var that = this;

        image.onload = function() {
            that.context.drawImage(image, 32, 32);
        };

        image.src = this._logo;

    }

    private drawPauseScreen() {

        this.context.fillStyle = 'rgba(0, 0, 0, 0.4)';
        this.context.fillRect(0, 0, this.width, this.height);

        //  Draw a 'play' arrow
        var arrowWidth = Math.round(this.width / 2);
        var arrowHeight = Math.round(this.height / 2);

        var sx = this.centerX - arrowWidth / 2;
        var sy = this.centerY - arrowHeight / 2;

        this.context.beginPath();
        this.context.moveTo(sx, sy);
        this.context.lineTo(sx, sy + arrowHeight);
        this.context.lineTo(sx + arrowWidth, this.centerY);
        this.context.closePath();

        this.context.fillStyle = 'rgba(255, 255, 255, 0.8)';
        this.context.fill();

    }

    private getOffset(element):Point {

        var box = element.getBoundingClientRect();

        var clientTop = element.clientTop || document.body.clientTop || 0;
        var clientLeft = element.clientLeft || document.body.clientLeft || 0;
        var scrollTop = window.pageYOffset || element.scrollTop || document.body.scrollTop;
        var scrollLeft = window.pageXOffset || element.scrollLeft || document.body.scrollLeft;

        return new Point(box.left + scrollLeft - clientLeft, box.top + scrollTop - clientTop);

    }

    public set backgroundColor(color: string) {
        this.canvas.style.backgroundColor = color;
    }

    public get backgroundColor():string {
        return this._bgColor;
    }

    public get x(): number {
        return this.bounds.x;
    }

    public get y(): number {
        return this.bounds.y;
    }

    public get width(): number {
        return this.bounds.width;
    }

    public get height(): number {
        return this.bounds.height;
    }

    public get centerX(): number {
        return this.bounds.halfWidth;
    }

    public get centerY(): number {
        return this.bounds.halfHeight;
    }

    public get randomX(): number {
        return Math.round(Math.random() * this.bounds.width);
    }

    public get randomY(): number {
        return Math.round(Math.random() * this.bounds.height);
    }

    private _logo:string = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAO1JREFUeNpi/P//PwM6YGRkxBQEAqBaRnQxFmwa10d6MAjrMqMofHv5L1we2SBGmAtAktg0ogOQQYHLd8ANYYFpPtTmzUAMAFmwnsEDrAdkCAvMZlIAsiFMMAEYsKvaSrQhIMCELkGsV2AAbIC8gCQYgwKIUABiNYBf9yoYH7n7n6CzN274g2IYEyFbsNmKLIaSkHpP7WSwUfbA0ASzFQRslBlxp0RcAF0TRhggA3zhAJIDpUKU5A9KyshpHDkjFZu5g2nJMFcwXVJSgqIGnBKx5bKenh4w/XzVbgbPtlIUcVgSxuoCUgHIIIAAAwArtXwJBABO6QAAAABJRU5ErkJggg==";

}