gvrender_pango.c File Reference

#include "config.h"
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <common/const.h>
#include <gvc/gvplugin_render.h>
#include <common/utils.h>
#include <gvc/gvplugin_device.h>
#include <gvc/gvio.h>
#include <math.h>
#include <util/agxbuf.h>
#include "gvplugin_pango.h"
#include <pango/pangocairo.h>

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Macros
#define	ARRAY_SIZE(A)   (sizeof(A)/sizeof(A[0]))
#define	RMIN   0.01

Enumerations
enum	format_type {   FORMAT_CAIRO , FORMAT_PNG , FORMAT_PS , FORMAT_PDF ,   FORMAT_SVG , FORMAT_EPS }

Functions
static void	cairogen_polyline (GVJ_t *job, pointf *A, size_t n)
static void	cairogen_set_color (cairo_t *cr, gvcolor_t *color)
static void	cairogen_add_color_stop_rgba (cairo_pattern_t *pat, double stop, gvcolor_t *color)
static cairo_status_t	writer (void *closure, const unsigned char *data, unsigned int length)
static void	cairogen_begin_job (GVJ_t *job)
static void	cairogen_end_job (GVJ_t *job)
static void	cairogen_begin_page (GVJ_t *job)
static void	cairogen_end_page (GVJ_t *job)
static void	cairogen_begin_anchor (GVJ_t *job, char *url, char *tooltip, char *target, char *id)
static void	cairogen_textspan (GVJ_t *job, pointf p, textspan_t *span)
static void	cairogen_set_penstyle (GVJ_t *job, cairo_t *cr)
static void	cairo_gradient_fill (cairo_t *cr, obj_state_t *obj, int filled, pointf *A, size_t n)
static void	cairogen_ellipse (GVJ_t *job, pointf *A, int filled)
static void	cairogen_polygon (GVJ_t *job, pointf *A, size_t n, int filled)
static void	cairogen_bezier (GVJ_t *job, pointf *A, size_t n, int filled)

Variables
static double	dashed [] = {6.}
static int	dashed_len = ARRAY_SIZE(dashed)
static double	dotted [] = {2., 6.}
static int	dotted_len = ARRAY_SIZE(dotted)
static const double	CAIRO_XMAX = 32767
static const double	CAIRO_YMAX = 32767
static gvrender_engine_t	cairogen_engine
static gvrender_features_t	render_features_cairo
static gvdevice_features_t	device_features_png
static gvdevice_features_t	device_features_ps
static gvdevice_features_t	device_features_eps
static gvdevice_features_t	device_features_pdf
static gvdevice_features_t	device_features_svg
gvplugin_installed_t	gvrender_pango_types []
gvplugin_installed_t	gvdevice_pango_types []

Macro Definition Documentation

ARRAY_SIZE

#define ARRAY_SIZE

(

A

)

(sizeof(A)/sizeof(A[0]))

Definition at line 41 of file gvrender_pango.c.

RMIN

#define RMIN   0.01

Enumeration Type Documentation

format_type

enum format_type

Enumerator
FORMAT_CAIRO
FORMAT_PNG
FORMAT_PS
FORMAT_PDF
FORMAT_SVG
FORMAT_EPS

Definition at line 32 of file gvrender_pango.c.

Function Documentation

cairo_gradient_fill()

static void cairo_gradient_fill ( cairo_t *  cr, obj_state_t *  obj, int  filled, pointf *  A, size_t  n  )

static

Definition at line 343 of file gvrender_pango.c.

References A, cairogen_add_color_stop_rgba(), obj_state_s::fillcolor, G, get_gradient_points(), GRADIENT, obj_state_s::gradient_angle, obj_state_s::gradient_frac, M_PI, obj_state_s::stopcolor, pointf_s::x, and pointf_s::y.

Referenced by cairogen_bezier(), cairogen_ellipse(), and cairogen_polygon().

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cairogen_add_color_stop_rgba()

static void cairogen_add_color_stop_rgba ( cairo_pattern_t *  pat, double  stop, gvcolor_t *  color  )

static

Definition at line 69 of file gvrender_pango.c.

References color().

Referenced by cairo_gradient_fill().

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cairogen_begin_anchor()

static void cairogen_begin_anchor ( GVJ_t *  job, char *  url, char *  tooltip, char *  target, char *  id  )

static

Definition at line 263 of file gvrender_pango.c.

References agxbfree(), agxbprint(), agxbuse(), GVJ_s::context, GVJ_s::obj, obj_state_s::url_map_p, pointf_s::x, and pointf_s::y.

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cairogen_begin_job()

static void cairogen_begin_job ( GVJ_t *  job )

static

Definition at line 84 of file gvrender_pango.c.

References GVJ_s::context, and GVJ_s::external_context.

cairogen_begin_page()

static void cairogen_begin_page ( GVJ_t *  job )

static

Definition at line 105 of file gvrender_pango.c.

References CAIRO_XMAX, CAIRO_YMAX, GVJ_s::clip, GVCOMMON_s::cmdname, GVJ_s::common, GVJ_s::context, FORMAT_CAIRO, FORMAT_EPS, FORMAT_PDF, FORMAT_PNG, FORMAT_PS, FORMAT_SVG, GVJ_s::height, gvplugin_active_render_s::id, boxf::LL, M_PI, NULL, GVJ_s::render, GVJ_s::rotation, scale(), GVJ_s::scale, GVJ_s::translation, boxf::UR, GVCOMMON_s::verbose, GVJ_s::width, writer(), pointf_s::x, and pointf_s::y.

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cairogen_bezier()

static void cairogen_bezier ( GVJ_t *  job, pointf *  A, size_t  n, int  filled  )

static

Definition at line 438 of file gvrender_pango.c.

References A, cairo_gradient_fill(), cairogen_set_color(), cairogen_set_penstyle(), GVJ_s::context, obj_state_s::fillcolor, GRADIENT, GVJ_s::obj, obj_state_s::pencolor, and RGRADIENT.

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cairogen_ellipse()

static void cairogen_ellipse ( GVJ_t *  job, pointf *  A, int  filled  )

static

Definition at line 381 of file gvrender_pango.c.

References A, cairo_gradient_fill(), cairogen_set_color(), cairogen_set_penstyle(), GVJ_s::context, obj_state_s::fillcolor, GRADIENT, M_PI, GVJ_s::obj, obj_state_s::pencolor, RGRADIENT, and RMIN.

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cairogen_end_job()

static void cairogen_end_job ( GVJ_t *  job )

static

Definition at line 90 of file gvrender_pango.c.

References GVJ_s::context, GVJ_s::external_context, and NULL.

cairogen_end_page()

static void cairogen_end_page ( GVJ_t *  job )

static

Definition at line 221 of file gvrender_pango.c.

References GVJ_s::context, FORMAT_CAIRO, FORMAT_PDF, FORMAT_PNG, FORMAT_PS, FORMAT_SVG, gvplugin_active_render_s::id, GVJ_s::imagedata, GVJ_s::render, and writer().

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cairogen_polygon()

static void cairogen_polygon ( GVJ_t *  job, pointf *  A, size_t  n, int  filled  )

static

Definition at line 417 of file gvrender_pango.c.

References A, cairo_gradient_fill(), cairogen_set_color(), cairogen_set_penstyle(), GVJ_s::context, obj_state_s::fillcolor, GRADIENT, GVJ_s::obj, obj_state_s::pencolor, and RGRADIENT.

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cairogen_polyline()

static void cairogen_polyline ( GVJ_t *  job, pointf *  A, size_t  n  )

static

Definition at line 459 of file gvrender_pango.c.

References A, cairogen_set_color(), cairogen_set_penstyle(), GVJ_s::context, GVJ_s::obj, and obj_state_s::pencolor.

Referenced by cairogen_textspan().

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cairogen_set_color()

static void cairogen_set_color ( cairo_t *  cr, gvcolor_t *  color  )

static

Definition at line 63 of file gvrender_pango.c.

References color().

Referenced by cairogen_bezier(), cairogen_ellipse(), cairogen_polygon(), cairogen_polyline(), and cairogen_textspan().

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cairogen_set_penstyle()

static void cairogen_set_penstyle ( GVJ_t *  job, cairo_t *  cr  )

static

Definition at line 329 of file gvrender_pango.c.

References dashed, dashed_len, dotted, dotted_len, GVJ_s::obj, obj_state_s::pen, PEN_DASHED, PEN_DOTTED, and obj_state_s::penwidth.

Referenced by cairogen_bezier(), cairogen_ellipse(), cairogen_polygon(), and cairogen_polyline().

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cairogen_textspan()

static void cairogen_textspan ( GVJ_t *  job, pointf  p, textspan_t *  span  )

static

Definition at line 292 of file gvrender_pango.c.

References A, cairogen_polyline(), cairogen_set_color(), GVJ_s::context, dashed, textfont_t::flags, textspan_t::font, FONT_DPI, HTML_OL, textspan_t::just, textspan_t::layout, GVJ_s::obj, obj_state_s::pencolor, POINTS_PER_INCH, textspan_t::size, pointf_s::x, pointf_s::y, textspan_t::yoffset_centerline, and textspan_t::yoffset_layout.

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writer()

static cairo_status_t writer ( void *  closure, const unsigned char *  data, unsigned int  length  )

static

Definition at line 77 of file gvrender_pango.c.

References gvwrite().

Referenced by cairogen_begin_page(), and cairogen_end_page().

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Variable Documentation

CAIRO_XMAX

const double CAIRO_XMAX = 32767

static

Definition at line 102 of file gvrender_pango.c.

Referenced by cairogen_begin_page().

CAIRO_YMAX

const double CAIRO_YMAX = 32767

static

Definition at line 103 of file gvrender_pango.c.

Referenced by cairogen_begin_page().

cairogen_engine

gvrender_engine_t cairogen_engine

static

Definition at line 472 of file gvrender_pango.c.

dashed

double dashed[] = {6.}

static

Definition at line 43 of file gvrender_pango.c.

Referenced by cairogen_set_penstyle(), and cairogen_textspan().

dashed_len

int dashed_len = ARRAY_SIZE(dashed)

static

Definition at line 44 of file gvrender_pango.c.

Referenced by cairogen_set_penstyle().

device_features_eps

gvdevice_features_t device_features_eps

static

Initial value:

= {
    GVRENDER_NO_WHITE_BG
      | GVDEVICE_DOES_TRUECOLOR,    
    {36.,36.},                  
    {0.,0.},                    
    {72.,72.},                  
}

Definition at line 530 of file gvrender_pango.c.

device_features_pdf

gvdevice_features_t device_features_pdf

static

Initial value:

= {
    GVDEVICE_BINARY_FORMAT
      | GVRENDER_NO_WHITE_BG
      | GVRENDER_DOES_MAPS
      | GVRENDER_DOES_MAP_RECTANGLE
      | GVDEVICE_DOES_TRUECOLOR,
    {36.,36.},                  
    {0.,0.},                    
    {72.,72.},                  
}

Definition at line 538 of file gvrender_pango.c.

device_features_png

gvdevice_features_t device_features_png

static

Initial value:

= {
    GVDEVICE_BINARY_FORMAT
      | GVDEVICE_DOES_TRUECOLOR,
    {0.,0.},                    
    {0.,0.},                    
    {96.,96.},                  
}

Definition at line 514 of file gvrender_pango.c.

device_features_ps

gvdevice_features_t device_features_ps

static

Initial value:

= {
    GVRENDER_NO_WHITE_BG
      | GVDEVICE_DOES_TRUECOLOR,    
    {36.,36.},                  
    {0.,0.},                    
    {72.,72.},                  
}

Definition at line 522 of file gvrender_pango.c.

device_features_svg

gvdevice_features_t device_features_svg

static

Initial value:

= {
    GVRENDER_NO_WHITE_BG
      | GVDEVICE_DOES_TRUECOLOR,    
    {0.,0.},                    
    {0.,0.},                    
    {72.,72.},                  
}

Definition at line 549 of file gvrender_pango.c.

dotted

double dotted[] = {2., 6.}

static

Definition at line 46 of file gvrender_pango.c.

Referenced by cairogen_set_penstyle().

dotted_len

int dotted_len = ARRAY_SIZE(dotted)

static

Definition at line 47 of file gvrender_pango.c.

Referenced by cairogen_set_penstyle().

gvdevice_pango_types

gvplugin_installed_t gvdevice_pango_types[]

Initial value:

= {
 
 
 
 
 
 
 
 
 
 
 
 
 
    {0, NULL, 0, NULL, NULL}
}

Definition at line 562 of file gvrender_pango.c.

gvrender_pango_types

gvplugin_installed_t gvrender_pango_types[]

Initial value:

= {
    {FORMAT_CAIRO, "cairo", 10, &cairogen_engine, &render_features_cairo},
    {0, NULL, 0, NULL, NULL}
}

Definition at line 557 of file gvrender_pango.c.

render_features_cairo

gvrender_features_t render_features_cairo

static

Initial value:

= {
    GVRENDER_Y_GOES_DOWN
        | GVRENDER_DOES_TRANSFORM, 
    4.,                         
    0,                          
    0,                          
    RGBA_DOUBLE,                
}

Definition at line 505 of file gvrender_pango.c.