GRASS GIS 7 Programmer's Manual
7.9.dev(2021)-e5379bbd7
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GRASS png display driver - set graphics processing. More...
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <grass/gis.h>
#include <grass/colors.h>
#include <grass/glocale.h>
#include "pngdriver.h"
Go to the source code of this file.
Functions | |
int | PNG_Graph_set (void) |
Start up graphics processing. More... | |
const char * | PNG_Graph_get_file (void) |
Get render file. More... | |
Variables | |
struct png_state | png |
GRASS png display driver - set graphics processing.
(C) 2003-2014 by Glynn Clements and the GRASS Development Team
This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.
Definition in file pngdriver/graph_set.c.
const char* PNG_Graph_get_file | ( | void | ) |
Get render file.
Definition at line 180 of file pngdriver/graph_set.c.
References png_state::file_name, and png.
int PNG_Graph_set | ( | void | ) |
Start up graphics processing.
Anything that needs to be assigned, set up, started-up, or otherwise initialized happens here. This is called only at the startup of the graphics driver.
The external variables define the pixle limits of the graphics surface. The coordinate system used by the applications programs has the (0,0) origin in the upper left-hand corner. Hence, screen_left < screen_right screen_top < screen_bottom
Definition at line 82 of file pngdriver/graph_set.c.
References _, png_state::background, png_state::clip_bot, png_state::clip_left, png_state::clip_rite, png_state::clip_top, DEFAULT_FG_COLOR, FILE_NAME, png_state::file_name, G_debug(), G_gisinit, G_str_to_color(), G_strcasecmp(), G_verbose_message(), getenv(), png_state::has_alpha, png_state::height, png, png_get_color(), png_init_color_table(), screen_height, screen_width, png_state::true_color, and png_state::width.
struct png_state png |
Definition at line 32 of file pngdriver/graph_set.c.
Referenced by PNG_color_rgb(), png_draw_line(), PNG_draw_point(), PNG_Erase(), png_get_color(), png_get_pixel(), PNG_Graph_close(), PNG_Graph_get_file(), PNG_Graph_set(), png_init_color_table(), PNG_Set_window(), read_image(), read_pgm(), write_bmp(), write_image(), write_pgm(), and write_ppm().