GtkProgress::set_text_alignment
void set_text_alignment(double x_align, double y_align);
The alignment of the text within the progress area can be modified
using this method. The x_align and
y_align parameters control the horizontal and
vertical alignment of the text, respectively. Their range can be
from 0.0 to 1.0 (meaning from
one side of the progress area to another).
The default setting is (0.5, 0.5).
