Computes and answers the text ascent using the current height mode.
the ascent adjusted using the current height mode See Also:AbstractTextRenderer.getHeightMode()
Computes and answers the text descent using the current height mode.
the descent adjusted to the current height mode See Also:AbstractTextRenderer.getHeightMode()
Validates the cache, here: creates a GlyphVector
and computes and stores its size information.
Parameters: g2 - the Graphics object used to get the font render context