def get_dimension(text):
    """Return the bounding box of the <text>,
    assuming that the left-bottom corner
    of the first letter of the text is at (0, 0). This procedure ignores
    /h, /v, and /a directives when calculating the boundingbox; it just returns the
    alignment specifiers as a part of the return value. The return value is a
    tuple (width, height, halign, valign, angle)."""
    (xmax, ymax, halign, valign, angle) = unaligned_get_dimension(text)
    xmin = ymin = 0
    if halign == 'C':
        xmin = -xmax / 2.0
        xmax = xmax / 2.0
    elif halign == 'R':
        xmin = -xmax
        xmax = 0
    if valign == 'M':
        ymin = -ymax / 2.0
        ymax = ymax / 2.0
    elif valign == 'T':
        ymin = -ymax
        ymax = 0
    if angle != 0:
        (x0, y0) = pychart_util.rotate(xmin, ymin, angle)
        (x1, y1) = pychart_util.rotate(xmax, ymin, angle)
        (x2, y2) = pychart_util.rotate(xmin, ymax, angle)
        (x3, y3) = pychart_util.rotate(xmax, ymax, angle)
        xmax = max(x0, x1, x2, x3)
        xmin = min(x0, x1, x2, x3)
        ymax = max(y0, y1, y2, y3)
        ymin = min(y0, y1, y2, y3)
        return (xmin, xmax, ymin, ymax)
    return (xmin, xmax, ymin, ymax)
Return the bounding box of the <text>,
    assuming that the left-bottom corner
    of the first letter of the text is at (0, 0). This procedure ignores
    /h, /v, and /a directives when calculating the boundingbox; it just returns the
    alignment specifiers as a part of the return value. The return value is a
    tuple (width, height, halign, valign, angle).