GRASS GIS 8 Programmer's Manual
8.2.2dev(2023)-3d2c704037
cairodriver/line_width.c
Go to the documentation of this file.
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/*!
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\file lib/cairodriver/line_width.c
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\brief GRASS cairo display driver - set line width
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(C) 2007-2008 by Lars Ahlzen and the GRASS Development Team
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This program is free software under the GNU General Public License
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(>=v2). Read the file COPYING that comes with GRASS for details.
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\author Lars Ahlzen <lars ahlzen.com> (original contibutor)
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\author Glynn Clements
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*/
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#include <
grass/gis.h
>
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#include "
cairodriver.h
"
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#define MIN_WIDTH 1
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static
double
previous_width = -1;
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/*!
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\brief Set line width
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\param width line width (double precision)
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*/
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void
Cairo_Line_width
(
double
width)
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{
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G_debug
(1,
"Cairo_Line_width: %f"
, width);
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width =
MAX
(
MIN_WIDTH
, width);
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if
(width != previous_width)
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cairo_set_line_width(
cairo
, width);
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return
;
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}
Cairo_Line_width
void Cairo_Line_width(double width)
Set line width.
Definition:
cairodriver/line_width.c:27
gis.h
cairo
cairo_t * cairo
Definition:
cairodriver/graph.c:46
MIN_WIDTH
#define MIN_WIDTH
Definition:
cairodriver/line_width.c:18
MAX
#define MAX(a, b)
Definition:
gis.h:135
cairodriver.h
GRASS cairo display driver - header file.
G_debug
int G_debug(int, const char *,...) __attribute__((format(printf
lib
cairodriver
line_width.c
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