Context2D's default font size should be 10px not pt

import QtQuick 2.0

Item {
    width: 500
    height: 400

    Canvas {
        anchors.fill: parent
        anchors.margins: 100

        onPaint: {
            var ctx = getContext("2d");
            ctx.reset();
            ctx.fillStyle = "#FF0000";
            ctx.fillText(ctx.font, 0, 10);
        }
    }
}

QString QFont::toString() const
{
    const QChar comma(QLatin1Char(','));
    return family() + comma +
        QString::number(     pointSizeF()) + comma +
        QString::number(      pixelSize()) + comma +
        QString::number((int) styleHint()) + comma +
        QString::number(         weight()) + comma +
        QString::number((int)     style()) + comma +
        QString::number((int) underline()) + comma +
        QString::number((int) strikeOut()) + comma +
        QString::number((int)fixedPitch()) + comma +
        QString::number((int)   rawMode());
}