dojo.provide("pocjs.Art");



dojo.declare("pocjs.Art", null, {

});



pocjs.Art.loadBitmap = function(name, filename) {

    var self = this;



    var dfd = new dojo.Deferred();



    PNG.load(filename, function(png) {

        var w = png.width;

        var h = png.height;

        var pixels = new Array(w * h << 0);

        var ppix = png.decodePixels();



        var result = new pocjs.gui.Bitmap(w, h);

        for (var y = 0; y < h; y++) {

            for (var x = 0; x < w; x++) {

                var data = ppix[y][x];



                var input = data[3] << 24

                          | data[0] << 16

                          | data[1] << 8

                          | data[2];

                var col = (input & 0xf) >> 2;

                // if (input == (0xffff00ff << 0)) { col = -1; }

                // silence closure compiler

                if (input == -65281) { col = -1; }

                result.pixels[x + y*w] = col;

                pixels[x + y*w] = input;

            }

        }



        self[name] = result;

        dfd.resolve(name);

    });

    return dfd;

}

    



pocjs.Art.getCol = function(c) {

    var r = (c >> 16) & 0xff;

    var g = (c >> 8) & 0xff;

    var b = (c) & 0xff;



    r = r * 0x55 / 0xff;

    g = g * 0x55 / 0xff;

    b = b * 0x55 / 0xff;



    return r << 16 | g << 8 | b;

};