Method GTK2.GdkPixbuf()->render_threshold_alpha()

Method render_threshold_alpha

GTK2.GdkBitmap render_threshold_alpha(int src_x, int src_y, int dest_c, int dest_y, int width, int height, int alpha_threshold)

Description

Takes the opacity values in a rectangular portion of a pixbuf and thresholds them to produce a bi-level alpha mask that can be used as a clipping mask for a drawable.