window.multigraph.util.namespace("window.multigraph.graphics.canvas", function (ns) {
    "use strict";

    /**
     * @module multigraph
     * @submodule canvas
     */

    ns.mixin.add(function (ns) {

        /**
         * Renders the title using the Canvas driver.
         *
         * @method render
         * @for Title
         * @chainable
         * @param {HTMLCanvasObject} context
         * @author jrfrimme
         */
        ns.Title.respondsTo("render", function (context) {
            var Point           = window.multigraph.math.Point,
                graph           = this.graph(),
                border          = this.border(),
                padding         = this.padding(),
                storedAnchor    = this.anchor(),
                storedBase      = this.base(),
                position        = this.position(),
                title           = this.text(),
                backgroundColor = this.color().toRGBA(this.opacity()),
                paddingBox      = graph.paddingBox(),
                plotBox         = graph.plotBox(),
                plotareaMargin  = graph.plotarea().margin(),
                h = title.origHeight(),
                w = title.origWidth(),
                pixelAnchor = new Point(
                    (0.5 * w + padding + border) * (storedAnchor.x() + 1),
                    (0.5 * h + padding + border) * (storedAnchor.y() + 1)
                ),
                pixelBase;

            if (this.frame() === "padding") {
                pixelBase = new Point(
                    (storedBase.x() + 1) * (paddingBox.width() / 2)  - plotareaMargin.left(),
                    (storedBase.y() + 1) * (paddingBox.height() / 2) - plotareaMargin.bottom()
                );
            } else {
                pixelBase = new Point(
                    (storedBase.x() + 1) * (plotBox.width() / 2),
                    (storedBase.y() + 1) * (plotBox.height() / 2)
                );
            }

            context.save();
            title.setTransform(context, pixelAnchor, pixelBase, position, 0);
            context.transform(1, 0, 0, -1, 0, 0);

            // border
            if (border > 0) {
                context.strokeStyle = this.bordercolor().toRGBA();
                context.lineWidth = border;
                context.strokeRect(
                    border / 2,
                    border / 2,
                    w + (2 * padding) + border,
                    h + (2 * padding) + border
                );
            }

            // background
            context.fillStyle = backgroundColor;
            context.fillRect(
                border,
                border,
                w + (2 * padding),
                h + (2 * padding)
            );
            context.restore();

            // text
            context.save();
            var textPosition = new Point(
                position.x() + border + padding,
                position.y() + border + padding
            );
            context.font = this.fontSize() + " sans-serif";
            context.fillStyle = "rgba(0, 0, 0, 1)";
            title.drawText(context, pixelAnchor, pixelBase, textPosition, 0);
            context.restore();
        });

    });

});