Geografic-Information-System/lib/cairodriver/color.c

/*!
  \file lib/cairodriver/color.c

  \brief GRASS cairo display driver - colors management

  (C) 2007-2008 by Lars Ahlzen and the GRASS Development Team
  
  This program is free software under the GNU General Public License
  (>=v2). Read the file COPYING that comes with GRASS for details.
  
  \author Lars Ahlzen <lars ahlzen.com> (original contibutor)
  \author Glynn Clements 
*/  

#include "cairodriver.h"

/*!
  \brief Set source color (opaque)
  
  This color will then be used for any subsequent drawing operation
  until a new source pattern is set.
  
  \param r red color value
  \param g green color value
  \param b blue color value
*/
void Cairo_Color(int r, int g, int b)
{
    G_debug(3, "Cairo_Color: %d,%d,%d", r, g, b);

    cairo_set_source_rgba(cairo,
			  CAIROCOLOR(r), CAIROCOLOR(g), CAIROCOLOR(b), 1.0);

    G_debug(3, "Set color to: %g %g %g",
	    CAIROCOLOR(r), CAIROCOLOR(g), CAIROCOLOR(b));
}