GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-498676c526
cairodriver/color.c
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/*!
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\file lib/cairodriver/color.c
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\brief GRASS cairo display driver - colors management
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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 contributor)
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\author Glynn Clements
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*/
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#include "
cairodriver.h
"
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/*!
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\brief Set source color (opaque)
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This color will then be used for any subsequent drawing operation
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until a new source pattern is set.
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\param r red color value
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\param g green color value
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\param b blue color value
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*/
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void
Cairo_Color
(
int
r
,
int
g
,
int
b
)
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{
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G_debug
(3,
"Cairo_Color: %d,%d,%d"
,
r
,
g
,
b
);
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cairo_set_source_rgba(
cairo
,
CAIROCOLOR
(
r
),
CAIROCOLOR
(
g
),
CAIROCOLOR
(
b
),
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1.0);
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G_debug
(3,
"Set color to: %g %g %g"
,
CAIROCOLOR
(
r
),
CAIROCOLOR
(
g
),
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CAIROCOLOR
(
b
));
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}
Cairo_Color
void Cairo_Color(int r, int g, int b)
Set source color (opaque)
Definition:
cairodriver/color.c:27
cairodriver.h
GRASS cairo display driver - header file.
CAIROCOLOR
#define CAIROCOLOR(a)
Definition:
cairodriver.h:50
cairo
cairo_t * cairo
Definition:
cairodriver/graph.c:46
G_debug
int G_debug(int, const char *,...) __attribute__((format(printf
g
float g
Definition:
named_colr.c:7
b
double b
Definition:
r_raster.c:39
r
double r
Definition:
r_raster.c:39
lib
cairodriver
color.c
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