rsvg246.c File Reference

implementation of content handler for image/svg using librsvg 2.46 API. More...

#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include <string.h>
#include <sys/types.h>
#include <librsvg/rsvg.h>
#include <nsutils/endian.h>
#include "utils/log.h"
#include "utils/utils.h"
#include "utils/messages.h"
#include "netsurf/plotters.h"
#include "netsurf/bitmap.h"
#include "netsurf/content.h"
#include "content/llcache.h"
#include "content/content_protected.h"
#include "content/content_factory.h"
#include "desktop/gui_internal.h"
#include "desktop/bitmap.h"
#include "image/image_cache.h"
#include "image/rsvg.h"

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Data Structures
struct	rsvg_content

Typedefs
typedef struct rsvg_content	rsvg_content

Functions
static nserror	rsvg_create (const content_handler *handler, lwc_string *imime_type, const struct http_parameter *params, llcache_handle *llcache, const char *fallback_charset, bool quirks, struct content **c)
static struct bitmap *	rsvg_cache_convert (struct content *c)
	create a bitmap from jpeg content for the image cache. More...
static void	rsvg__get_demensions (const rsvg_content *svgc, int *width, int *height)
static bool	rsvg_convert (struct content *c)
static nserror	rsvg_clone (const struct content *old, struct content **newc)
static void	rsvg_destroy (struct content *c)
	CONTENT_FACTORY_REGISTER_TYPES (nsrsvg, rsvg_types, rsvg_content_handler)

Variables
static const content_handler	rsvg_content_handler
static const char *	rsvg_types []

Detailed Description

implementation of content handler for image/svg using librsvg 2.46 API.

SVG files are rendered to a NetSurf bitmap by creating a Cairo rendering surface (content_rsvg_data.cs) over the bitmap's data, creating a Cairo drawing context using that surface, and then passing that drawing context to librsvg which then uses Cairo calls to plot the graphic to the bitmap. We store this in content->bitmap, and then use the usual bitmap plotter function to render it for redraw requests.

Definition in file rsvg246.c.

Typedef Documentation

rsvg_content

typedef struct rsvg_content rsvg_content

Function Documentation

CONTENT_FACTORY_REGISTER_TYPES()

CONTENT_FACTORY_REGISTER_TYPES	(	nsrsvg	,
		rsvg_types	,
		rsvg_content_handler
	)

rsvg__get_demensions()

static void rsvg__get_demensions ( const rsvg_content *  svgc, int *  width, int *  height  )

static

Definition at line 147 of file rsvg246.c.

References height, NSLOG, rsvg_content::rsvgh, and width.

Referenced by rsvg_convert().

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rsvg_cache_convert()

static struct bitmap * rsvg_cache_convert ( struct content *  c )

static

create a bitmap from jpeg content for the image cache.

Definition at line 98 of file rsvg246.c.

References netsurf_table::bitmap, bitmap(), bitmap_format_to_client(), BITMAP_LAYOUT_ARGB8888, BITMAP_NONE, gui_bitmap_table::create, gui_bitmap_table::destroy, gui_bitmap_table::get_buffer, gui_bitmap_table::get_rowstride, guit, content::height, gui_bitmap_table::modified, NSLOG, rsvg_content::rsvgh, and content::width.

Referenced by rsvg_convert().

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rsvg_clone()

static nserror rsvg_clone ( const struct content *  old, struct content **  newc  )

static

Definition at line 220 of file rsvg246.c.

References rsvg_content::base, content__clone(), content_destroy(), CONTENT_STATUS_DONE, CONTENT_STATUS_READY, NSERROR_CLONE_FAILED, NSERROR_NOMEM, NSERROR_OK, rsvg_convert(), and content::status.

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rsvg_convert()

static bool rsvg_convert ( struct content *  c )

static

Definition at line 182 of file rsvg246.c.

References content__get_source_data(), content_set_done(), content_set_ready(), content_set_status(), content::height, image_cache_add(), NSLOG, rsvg__get_demensions(), rsvg_cache_convert(), rsvg_content::rsvgh, content::size, bitmap::size, and content::width.

Referenced by rsvg_clone().

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rsvg_create()

static nserror rsvg_create ( const content_handler *  handler, lwc_string *  imime_type, const struct http_parameter *  params, llcache_handle *  llcache, const char *  fallback_charset, bool  quirks, struct content **  c  )

static

Definition at line 66 of file rsvg246.c.

References rsvg_content::base, content__init(), content::fallback_charset, content::handler, llcache, NSERROR_NOMEM, NSERROR_OK, and content::quirks.

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rsvg_destroy()

static void rsvg_destroy ( struct content *  c )

static

Definition at line 250 of file rsvg246.c.

References image_cache_destroy(), and rsvg_content::rsvgh.

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Variable Documentation

rsvg_content_handler

const content_handler rsvg_content_handler

static

Initial value:

= {
        .create = rsvg_create,
        .data_complete = rsvg_convert,
        .destroy = rsvg_destroy,
        .redraw = image_cache_redraw,
        .clone = rsvg_clone,
        .get_internal = image_cache_get_internal,
        .type = image_cache_content_type,
        .is_opaque = image_cache_is_opaque,
        .no_share = false,
}

Definition at line 262 of file rsvg246.c.

rsvg_types

const char* rsvg_types[]

static

Initial value:

= {
        "image/svg",
        "image/svg+xml"
}

Definition at line 274 of file rsvg246.c.