GRASS GIS 7 Programmer's Manual  7.5.svn(2017)-r71785
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cairodriver/color.c
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1 /*!
2  \file lib/cairodriver/color.c
3 
4  \brief GRASS cairo display driver - colors management
5 
6  (C) 2007-2008 by Lars Ahlzen and the GRASS Development Team
7 
8  This program is free software under the GNU General Public License
9  (>=v2). Read the file COPYING that comes with GRASS for details.
10 
11  \author Lars Ahlzen <lars ahlzen.com> (original contibutor)
12  \author Glynn Clements
13 */
14 
15 #include "cairodriver.h"
16 
17 /*!
18  \brief Set source color (opaque)
19 
20  This color will then be used for any subsequent drawing operation
21  until a new source pattern is set.
22 
23  \param r red color value
24  \param g green color value
25  \param b blue color value
26 */
27 void Cairo_Color(int r, int g, int b)
28 {
29  G_debug(3, "Cairo_Color: %d,%d,%d", r, g, b);
30 
31  cairo_set_source_rgba(cairo,
32  CAIROCOLOR(r), CAIROCOLOR(g), CAIROCOLOR(b), 1.0);
33 
34  G_debug(3, "Set color to: %g %g %g",
35  CAIROCOLOR(r), CAIROCOLOR(g), CAIROCOLOR(b));
36 }
void Cairo_Color(int, int, int)
Set source color (opaque)
#define CAIROCOLOR(a)
Definition: cairodriver.h:49
double b
Definition: r_raster.c:39
cairo_t * cairo
int G_debug(int level, const char *msg,...)
Print debugging message.
Definition: debug.c:65
float g
Definition: named_colr.c:8
GRASS cairo display driver - header file.
double r
Definition: r_raster.c:39