SVG Surfaces

SVG Surfaces — Rendering SVG documents

Synopsis




cairo_surface_t* cairo_svg_surface_create   (const char *filename,
                                             double width_in_points,
                                             double height_in_points);
cairo_surface_t* cairo_svg_surface_create_for_stream
                                            (cairo_write_func_t write_func,
                                             void *closure,
                                             double width_in_points,
                                             double height_in_points);
void        cairo_svg_surface_restrict_to_version
                                            (cairo_surface_t *surface,
                                             cairo_svg_version_t version);
enum        cairo_svg_version_t;
void        cairo_svg_get_versions          (cairo_svg_version_t const	**versions,
                                             int *num_versions);
const char* cairo_svg_version_to_string     (cairo_svg_version_t version);

Description

Details

cairo_svg_surface_create ()

cairo_surface_t* cairo_svg_surface_create   (const char *filename,
                                             double width_in_points,
                                             double height_in_points);

Creates a SVG surface of the specified size in points to be written to filename.

filename : a filename for the SVG output (must be writable)
width_in_points : width of the surface, in points (1 point == 1/72.0 inch)
height_in_points : height of the surface, in points (1 point == 1/72.0 inch)
Returns : a pointer to the newly created surface. The caller owns the surface and should call cairo_surface_destroy when done with it. This function always returns a valid pointer, but it will return a pointer to a "nil" surface if an error such as out of memory occurs. You can use cairo_surface_status() to check for this.

Since 1.2

cairo_svg_surface_create_for_stream ()

cairo_surface_t* cairo_svg_surface_create_for_stream
                                            (cairo_write_func_t write_func,
                                             void *closure,
                                             double width_in_points,
                                             double height_in_points);

Creates a SVG surface of the specified size in points to be written incrementally to the stream represented by write_func and closure.

write_func : a cairo_write_func_t to accept the output data
closure : the closure argument for write_func
width_in_points : width of the surface, in points (1 point == 1/72.0 inch)
height_in_points : height of the surface, in points (1 point == 1/72.0 inch)
Returns : a pointer to the newly created surface. The caller owns the surface and should call cairo_surface_destroy when done with it. This function always returns a valid pointer, but it will return a pointer to a "nil" surface if an error such as out of memory occurs. You can use cairo_surface_status() to check for this.

Since 1.2

cairo_svg_surface_restrict_to_version ()

void        cairo_svg_surface_restrict_to_version
                                            (cairo_surface_t *surface,
                                             cairo_svg_version_t version);

Restricts the generated SVG file to version. See cairo_svg_get_versions() for a list of available version values that can be used here.

This function should only be called before any drawing operations have been performed on the given surface. The simplest way to do this is to call this function immediately after creating the surface.

surface : a SVG cairo_surface_t
version : SVG version

Since 1.2

enum cairo_svg_version_t

typedef enum {
    CAIRO_SVG_VERSION_1_1,
    CAIRO_SVG_VERSION_1_2
} cairo_svg_version_t;

cairo_svg_version_t is used to describe the version number of the SVG specification that a generated SVG file will conform to.

CAIRO_SVG_VERSION_1_1 The version 1.1 of the SVG specification.
CAIRO_SVG_VERSION_1_2 The version 1.2 of the SVG specification.

cairo_svg_get_versions ()

void        cairo_svg_get_versions          (cairo_svg_version_t const	**versions,
                                             int *num_versions);

Used to retrieve the list of supported versions. See cairo_svg_surface_restrict_to_version().

versions : supported version list
num_versions : list length

Since 1.2

cairo_svg_version_to_string ()

const char* cairo_svg_version_to_string     (cairo_svg_version_t version);

Get the string representation of the given version id. This function will return NULL if version isn't valid. See cairo_svg_get_versions() for a way to get the list of valid version ids.

version : a version id
Returns : the string associated to given version.

Since 1.2