GRASS GIS 8 Programmer's Manual 8.3.2(2024)-exported
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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 contributor)
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 */
27void 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, CAIROCOLOR(r), CAIROCOLOR(g), CAIROCOLOR(b),
32 1.0);
33
34 G_debug(3, "Set color to: %g %g %g", CAIROCOLOR(r), CAIROCOLOR(g),
35 CAIROCOLOR(b));
36}
void Cairo_Color(int r, int g, int b)
Set source color (opaque)
GRASS cairo display driver - header file.
#define CAIROCOLOR(a)
Definition cairodriver.h:50
cairo_t * cairo
int G_debug(int level, const char *msg,...)
Print debugging message.
Definition debug.c:66
double b
double r
float g
Definition named_colr.c:7