measure

Description:

public void measure (string text, out int width, out int height)

Measures the text provided using the pango layout used by the SourceGutterRendererText.

this	a SourceGutterRendererText.
text	the text to measure.
width	location to store the width of the text in pixels, or `null`.
height	location to store the height of the text in pixels, or `null`.