Function textmetrics

pattern/canvas.js:2466–2477

(str, options)

}

function textmetrics(str, options) {
    /* Returns array [width, height] for the given text.
     */
    var a = _fontMixin(options);
    var w = 0;
    _ctx_font(a[0], a[1], a[2]);
    var lines = str.toString().split("\n");
    for (var i=0; i<lines.length; i++) {
        w = Math.max(w, _ctx.measureText(lines[i]).width);
    }
    return [w, a[1] + a[1]*a[3]*(lines.length-1)];
}

function textwidth(str, options) {
    /* Returns the width of the given text.