GRASS cairo display driver - header file. More...

#include <grass/config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <cairo.h>
#include <grass/gis.h>
#include "driver.h"
#include "driverlib.h"

Include dependency graph for cairodriver.h:

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Go to the source code of this file.

Data Structures
struct	cairo_state

Macros
#define	CAIRO_HAS_XLIB_XRENDER_SURFACE 0

#define	DEFAULT_FILE_NAME "map.png"

#define	HEADER_SIZE 64

#define	COLORSCALE (1.0 / 255.0)

#define	CAIROCOLOR(a) (((double)(a)) * COLORSCALE)

#define	FTYPE_UNKNOWN 0

#define	FTYPE_PPM 1

#define	FTYPE_BMP 2

#define	FTYPE_PNG 3

#define	FTYPE_PDF 4

#define	FTYPE_PS 5

#define	FTYPE_SVG 6

#define	FTYPE_X11 7

Functions
const struct driver *	Cairo_Driver (void)
	Initialize display driver. More...

void	Cairo_Client_Close (void)

int	Cairo_Graph_set (void)
	Initialize driver. More...

const char *	Cairo_Graph_get_file (void)
	Get render file. More...

void	Cairo_Graph_close (void)
	Close driver. More...

void	Cairo_Box (double, double, double, double)
	Draw a (filled) rectangle. More...

void	Cairo_Set_window (double, double, double, double)
	Set window. More...

void	Cairo_Bitmap (int, int, int, const unsigned char *)
	Draw bitmap. More...

void	Cairo_Color (int, int, int)
	Set source color (opaque) More...

void	Cairo_Erase (void)
	Erase screen. More...

void	Cairo_begin_raster (int, int[2][2], double[2][2])
	Start drawing raster. More...

int	Cairo_raster (int, int, const unsigned char , const unsigned char , const unsigned char , const unsigned char )
	Draw raster row. More...

void	Cairo_end_raster (void)
	Finish drawing raster. More...

void	Cairo_Begin (void)

void	Cairo_Move (double, double)

void	Cairo_Cont (double, double)

void	Cairo_Close (void)

void	Cairo_Stroke (void)

void	Cairo_Fill (void)

void	Cairo_Point (double, double)

void	Cairo_Line_width (double)
	Set line width. More...

void	Cairo_Text (const char *)
	Draw text. More...

void	Cairo_text_box (const char , double , double , double , double *)

void	Cairo_set_font (const char *)
	Set font. More...

void	Cairo_font_list (char **, int )
	Get list of fonts. More...

void	Cairo_font_info (char **, int )
	Get fonts into. More...

void	cairo_read_image (void)

void	cairo_read_ppm (void)

void	cairo_read_bmp (void)

void	cairo_read_xid (void)

void	cairo_write_image (void)

void	cairo_write_ppm (void)

void	cairo_write_bmp (void)

void	cairo_write_xid (void)

Variables
cairo_surface_t *	surface

cairo_t *	cairo

struct cairo_state	ca

Detailed Description

GRASS cairo display driver - header file.

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author: Lars Ahlzen <lars ahlzen.com> (original contributor); Glynn Clements

Definition in file cairodriver.h.

Macro Definition Documentation

◆ CAIRO_HAS_XLIB_XRENDER_SURFACE

#define CAIRO_HAS_XLIB_XRENDER_SURFACE 0

Definition at line 29 of file cairodriver.h.

◆ CAIROCOLOR

#define CAIROCOLOR ( a ) (((double)(a)) * COLORSCALE)

Definition at line 50 of file cairodriver.h.

◆ COLORSCALE

#define COLORSCALE (1.0 / 255.0)

Definition at line 49 of file cairodriver.h.

◆ DEFAULT_FILE_NAME

#define DEFAULT_FILE_NAME "map.png"

Definition at line 44 of file cairodriver.h.

◆ FTYPE_BMP

#define FTYPE_BMP 2

Definition at line 55 of file cairodriver.h.

◆ FTYPE_PDF

#define FTYPE_PDF 4

Definition at line 57 of file cairodriver.h.

◆ FTYPE_PNG

#define FTYPE_PNG 3

Definition at line 56 of file cairodriver.h.

◆ FTYPE_PPM

#define FTYPE_PPM 1

Definition at line 54 of file cairodriver.h.

◆ FTYPE_PS

#define FTYPE_PS 5

Definition at line 58 of file cairodriver.h.

◆ FTYPE_SVG

#define FTYPE_SVG 6

Definition at line 59 of file cairodriver.h.

◆ FTYPE_UNKNOWN

#define FTYPE_UNKNOWN 0

Definition at line 53 of file cairodriver.h.

◆ FTYPE_X11

#define FTYPE_X11 7

Definition at line 60 of file cairodriver.h.

◆ HEADER_SIZE

#define HEADER_SIZE 64

Definition at line 46 of file cairodriver.h.

Function Documentation

◆ Cairo_Begin()

void Cairo_Begin ( void )

Definition at line 17 of file cairodriver/draw.c.

References cairo.

◆ Cairo_begin_raster()

void Cairo_begin_raster	(	int	mask,
		int	s[2][2],
		double	d[2][2]
	)

Start drawing raster.

Todo:: are top and left swapped?

Parameters

mask	non-zero int for mask
s	source (map) extent (left, right, top, bottom)
d	destination (image) extent (left, right, top, bottom)

Definition at line 71 of file cairodriver/raster.c.

◆ Cairo_Bitmap()

void Cairo_Bitmap	(	int	ncols,
		int	nrows,
		int	threshold,
		const unsigned char *	buf
	)

Draw bitmap.

Parameters

ncols,nrows	number of columns and rows
threshold	threshold value
buf	data buffer

Definition at line 26 of file cairodriver/draw_bitmap.c.

◆ Cairo_Box()

void Cairo_Box	(	double	x1,
		double	y1,
		double	x2,
		double	y2
	)

Draw a (filled) rectangle.

Parameters

x1,y1,x2,y2 rectangle coordinates

Definition at line 22 of file cairodriver/box.c.

◆ Cairo_Client_Close()

void Cairo_Client_Close ( void )

◆ Cairo_Close()

void Cairo_Close ( void )

Definition at line 32 of file cairodriver/draw.c.

References cairo.

◆ Cairo_Color()

void Cairo_Color	(	int	r,
		int	g,
		int	b
	)

Set source color (opaque)

This color will then be used for any subsequent drawing operation until a new source pattern is set.

Parameters

r	red color value
g	green color value
b	blue color value

Definition at line 27 of file cairodriver/color.c.

References b, cairo, CAIROCOLOR, g, G_debug(), and r.

◆ Cairo_Cont()

void Cairo_Cont	(	double	x,
		double	y
	)

Definition at line 27 of file cairodriver/draw.c.

References cairo, and x.

◆ Cairo_Driver()

const struct driver* Cairo_Driver ( void )

Initialize display driver.

Returns: pointer driver structure

Definition at line 22 of file cairodriver/driver.c.

◆ Cairo_end_raster()

void Cairo_end_raster ( void )

Finish drawing raster.

Definition at line 180 of file cairodriver/raster.c.

References cairo, and G_debug().

◆ Cairo_Erase()

void Cairo_Erase ( void )

Erase screen.

Definition at line 20 of file cairodriver/erase.c.

References cairo_state::bgcolor_a, cairo_state::bgcolor_b, cairo_state::bgcolor_g, cairo_state::bgcolor_r, ca, cairo, G_debug(), and cairo_state::modified.

◆ Cairo_Fill()

void Cairo_Fill ( void )

Definition at line 43 of file cairodriver/draw.c.

References ca, cairo, and cairo_state::modified.

◆ Cairo_font_info()

void Cairo_font_info	(	char ***	list,
		int *	count
	)

Get fonts into.

Parameters

[out]	list	font list
[out]	count	number of items in the list

Definition at line 338 of file cairodriver/text.c.

◆ Cairo_font_list()

void Cairo_font_list	(	char ***	list,
		int *	count
	)

Get list of fonts.

Parameters

[out]	list	font list
[out]	count	number of items in the list

Definition at line 324 of file cairodriver/text.c.

◆ Cairo_Graph_close()

void Cairo_Graph_close ( void )

Close driver.

Definition at line 302 of file cairodriver/graph.c.

References ca, cairo, cairo_write_image(), cairo_state::file_type, FTYPE_X11, G_debug(), cairo_state::mapped, NULL, and surface.

◆ Cairo_Graph_get_file()

const char* Cairo_Graph_get_file ( void )

Get render file.

Returns: file name

Definition at line 294 of file cairodriver/graph.c.

References ca, and cairo_state::file_name.

◆ Cairo_Graph_set()

int Cairo_Graph_set ( void )

Initialize driver.

Set background color, transparency, drawable, antialias mode, etc.

Returns: 0

Definition at line 237 of file cairodriver/graph.c.

References cairo_state::bgcolor_a, cairo_state::bgcolor_b, cairo_state::bgcolor_g, cairo_state::bgcolor_r, ca, CAIROCOLOR, G_debug(), G_fatal_error(), G_gisinit, G_str_to_color(), and G_strcasecmp().

◆ Cairo_Line_width()

void Cairo_Line_width ( double width )

Set line width.

Parameters

width line width (double precision)

Definition at line 27 of file cairodriver/line_width.c.

◆ Cairo_Move()

void Cairo_Move	(	double	x,
		double	y
	)

Definition at line 22 of file cairodriver/draw.c.

References cairo, and x.

◆ Cairo_Point()

void Cairo_Point	(	double	x,
		double	y
	)

Definition at line 49 of file cairodriver/draw.c.

References ca, cairo, cairo_state::modified, and x.

◆ Cairo_raster()

int Cairo_raster	(	int	n,
		int	row,
		const unsigned char *	red,
		const unsigned char *	grn,
		const unsigned char *	blu,
		const unsigned char *	nul
	)

Draw raster row.

Parameters

n	number of cells
row	raster row (starting at 0)
red,grn,blu,nul	red,green,blue and null value

Returns: next row

Definition at line 130 of file cairodriver/raster.c.

◆ cairo_read_bmp()

void cairo_read_bmp ( void )

Definition at line 82 of file cairodriver/read_bmp.c.

References HEADER_SIZE.

Referenced by cairo_read_image().

◆ cairo_read_image()

void cairo_read_image ( void )

Definition at line 17 of file cairodriver/read.c.

References ca, cairo, cairo_read_bmp(), cairo_read_ppm(), cairo_read_xid(), cairo_state::file_name, cairo_state::file_type, FTYPE_BMP, FTYPE_PNG, FTYPE_PPM, FTYPE_X11, G_debug(), cairo_state::modified, and surface.

◆ cairo_read_ppm()

void cairo_read_ppm ( void )

Definition at line 19 of file cairodriver/read_ppm.c.

References ca, cairo_state::file_name, and G_store().

Referenced by cairo_read_image().

◆ cairo_read_xid()

void cairo_read_xid ( void )

Definition at line 5 of file read_xid.c.

References _, ca, cairo_state::file_name, and G_fatal_error().

Referenced by cairo_read_image().

◆ Cairo_set_font()

void Cairo_set_font ( const char * name )

Set font.

Parameters

name font name

Definition at line 283 of file cairodriver/text.c.

◆ Cairo_Set_window()

void Cairo_Set_window	(	double	t,
		double	b,
		double	l,
		double	r
	)

Set window.

Parameters

t,b,l,r top, bottom, left, right

Definition at line 22 of file cairodriver/set_window.c.

References b, cairo, G_debug(), l, r, and t.

◆ Cairo_Stroke()

void Cairo_Stroke ( void )

Definition at line 37 of file cairodriver/draw.c.

References ca, cairo, and cairo_state::modified.

◆ Cairo_Text()

void Cairo_Text ( const char * str )

Draw text.

Parameters

str	string to be drawn

Definition at line 110 of file cairodriver/text.c.

◆ Cairo_text_box()

void Cairo_text_box	(	const char *	str,
		double *	t,
		double *	b,
		double *	l,
		double *	r
	)

Definition at line 133 of file cairodriver/text.c.

◆ cairo_write_bmp()

void cairo_write_bmp ( void )

Definition at line 65 of file cairodriver/write_bmp.c.

References _, ca, cairo_state::file_name, G_fatal_error(), HEADER_SIZE, and output().

Referenced by cairo_write_image().

◆ cairo_write_image()

void cairo_write_image ( void )

Definition at line 17 of file cairodriver/write.c.

References ca, cairo, cairo_write_bmp(), cairo_write_ppm(), cairo_write_xid(), cairo_state::file_name, cairo_state::file_type, FTYPE_BMP, FTYPE_PNG, FTYPE_PPM, FTYPE_X11, G_debug(), cairo_state::mapped, cairo_state::modified, and surface.

Referenced by Cairo_Graph_close().

◆ cairo_write_ppm()

void cairo_write_ppm ( void )

Definition at line 19 of file cairodriver/write_ppm.c.

References _, ca, cairo_state::file_name, G_fatal_error(), G_free(), G_store(), cairo_state::grid, cairo_state::height, output(), cairo_state::stride, cairo_state::width, and x.

Referenced by cairo_write_image().

◆ cairo_write_xid()

void cairo_write_xid ( void )

Definition at line 5 of file write_xid.c.

References _, ca, cairo_state::file_name, and G_fatal_error().

Referenced by cairo_write_image().

Variable Documentation

◆ ca

struct cairo_state ca

extern

Definition at line 1 of file cairodriver/graph.c.

Referenced by Cairo_Erase(), Cairo_Fill(), Cairo_Graph_close(), Cairo_Graph_get_file(), Cairo_Graph_set(), Cairo_Point(), cairo_read_image(), cairo_read_ppm(), cairo_read_xid(), Cairo_Stroke(), cairo_write_bmp(), cairo_write_image(), cairo_write_ppm(), and cairo_write_xid().

◆ cairo

cairo_t* cairo

extern

Definition at line 46 of file cairodriver/graph.c.

Referenced by Cairo_Begin(), Cairo_Close(), Cairo_Color(), Cairo_Cont(), Cairo_end_raster(), Cairo_Erase(), Cairo_Fill(), Cairo_Graph_close(), Cairo_Move(), Cairo_Point(), cairo_read_image(), Cairo_Set_window(), Cairo_Stroke(), and cairo_write_image().

◆ surface

cairo_surface_t* surface

extern

Definition at line 45 of file cairodriver/graph.c.

Referenced by Cairo_Graph_close(), cairo_read_image(), and cairo_write_image().

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ CAIRO_HAS_XLIB_XRENDER_SURFACE

◆ CAIROCOLOR

◆ COLORSCALE

◆ DEFAULT_FILE_NAME

◆ FTYPE_BMP

◆ FTYPE_PDF

◆ FTYPE_PNG

◆ FTYPE_PPM

◆ FTYPE_PS

◆ FTYPE_SVG

◆ FTYPE_UNKNOWN

◆ FTYPE_X11

◆ HEADER_SIZE

Function Documentation

◆ Cairo_Begin()

◆ Cairo_begin_raster()

◆ Cairo_Bitmap()

◆ Cairo_Box()

◆ Cairo_Client_Close()

◆ Cairo_Close()

◆ Cairo_Color()

◆ Cairo_Cont()

◆ Cairo_Driver()

◆ Cairo_end_raster()

◆ Cairo_Erase()

◆ Cairo_Fill()

◆ Cairo_font_info()

◆ Cairo_font_list()

◆ Cairo_Graph_close()

◆ Cairo_Graph_get_file()

◆ Cairo_Graph_set()

◆ Cairo_Line_width()

◆ Cairo_Move()

◆ Cairo_Point()

◆ Cairo_raster()

◆ cairo_read_bmp()

◆ cairo_read_image()

◆ cairo_read_ppm()

◆ cairo_read_xid()

◆ Cairo_set_font()

◆ Cairo_Set_window()

◆ Cairo_Stroke()

◆ Cairo_Text()

◆ Cairo_text_box()

◆ cairo_write_bmp()

◆ cairo_write_image()

◆ cairo_write_ppm()

◆ cairo_write_xid()

Variable Documentation

◆ ca

◆ cairo

◆ surface