GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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cairodriver/line_width.c
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1/*!
2 \file lib/cairodriver/line_width.c
3
4 \brief GRASS cairo display driver - set line width
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 <grass/gis.h>
16#include "cairodriver.h"
17
18#define MIN_WIDTH 1
19
20static double previous_width = -1;
21
22/*!
23 \brief Set line width
24
25 \param width line width (double precision)
26 */
27void Cairo_Line_width(double width)
28{
29 G_debug(1, "Cairo_Line_width: %f", width);
30
31 width = MAX(MIN_WIDTH, width);
32 if (width != previous_width)
33 cairo_set_line_width(cairo, width);
34
35 return;
36}
#define MIN_WIDTH
void Cairo_Line_width(double width)
Set line width.
GRASS cairo display driver - header file.
cairo_t * cairo
int G_debug(int level, const char *msg,...)
Print debugging message.
Definition debug.c:66
#define MAX(a, b)
Definition parson.c:87