GRASS GIS 8 Programmer's Manual
8.3.2(2024)-exported
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cairodriver/draw.c
Go to the documentation of this file.
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/*!
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\file lib/cairodriver/draw.c
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\brief GRASS cairo display driver
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(C) 2007-2008 by Lars Ahlzen, Glynn Clements 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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void
Cairo_Begin
(
void
)
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{
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cairo_new_path(
cairo
);
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}
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void
Cairo_Move
(
double
x,
double
y)
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{
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cairo_move_to(
cairo
,
x
, y);
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}
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void
Cairo_Cont
(
double
x,
double
y)
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{
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cairo_line_to(
cairo
,
x
, y);
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}
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void
Cairo_Close
(
void
)
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{
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cairo_close_path(
cairo
);
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}
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void
Cairo_Stroke
(
void
)
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{
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cairo_stroke(
cairo
);
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ca
.
modified
= 1;
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}
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void
Cairo_Fill
(
void
)
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{
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cairo_fill(
cairo
);
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ca
.
modified
= 1;
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}
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void
Cairo_Point
(
double
x,
double
y)
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{
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static
double
point_size = 1.0;
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double
half_point_size = point_size / 2;
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cairo_new_path(
cairo
);
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cairo_rectangle(
cairo
,
x
- half_point_size, y - half_point_size, point_size,
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point_size);
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cairo_fill(
cairo
);
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ca
.
modified
= 1;
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}
Cairo_Begin
void Cairo_Begin(void)
Definition
cairodriver/draw.c:17
Cairo_Close
void Cairo_Close(void)
Definition
cairodriver/draw.c:32
Cairo_Stroke
void Cairo_Stroke(void)
Definition
cairodriver/draw.c:37
Cairo_Cont
void Cairo_Cont(double x, double y)
Definition
cairodriver/draw.c:27
Cairo_Fill
void Cairo_Fill(void)
Definition
cairodriver/draw.c:43
Cairo_Move
void Cairo_Move(double x, double y)
Definition
cairodriver/draw.c:22
Cairo_Point
void Cairo_Point(double x, double y)
Definition
cairodriver/draw.c:49
cairodriver.h
GRASS cairo display driver - header file.
ca
struct cairo_state ca
Definition
cairodriver/graph.c:42
cairo
cairo_t * cairo
Definition
cairodriver/graph.c:46
cairo_state::modified
int modified
Definition
cairodriver.h:71
x
#define x
cairodriver
draw.c
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