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 .

The SVG surface backend recognizes the following MIME types for the data attached to a surface (see cairo_surface_set_mime_data()) when it is used as a source pattern for drawing on this surface: CAIRO_MIME_TYPE_JPEG, CAIRO_MIME_TYPE_PNG, CAIRO_MIME_TYPE_URI. If any of them is specified, the SVG backend emits a href with the content of MIME data instead of a surface snapshot (PNG, Base64-encoded) in the corresponding image tag.

The unofficial MIME type CAIRO_MIME_TYPE_URI is examined first. If present, the URI is emitted as is: assuring the correctness of URI is left to the client code.

If CAIRO_MIME_TYPE_URI is not present, but CAIRO_MIME_TYPE_JPEG or CAIRO_MIME_TYPE_PNG is specified, the corresponding data is Base64-encoded and emitted.

If CAIRO_MIME_TYPE_UNIQUE_ID is present, all surfaces with the same unique identifier will only be embedded once.

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 .

Since: 1.2

cairo_svg_surface_get_document_unit ()

cairo_svg_unit_t
cairo_svg_surface_get_document_unit (cairo_surface_t *surface);

Get the unit of the SVG surface.

If the surface passed as an argument is not a SVG surface, the function sets the error status to CAIRO_STATUS_SURFACE_TYPE_MISMATCH and returns CAIRO_SVG_UNIT_USER.

Since: 1.16

cairo_svg_surface_set_document_unit ()

void
cairo_svg_surface_set_document_unit (cairo_surface_t *surface,
                                     cairo_svg_unit_t unit);

Use the specified unit for the width and height of the generated SVG file. See cairo_svg_unit_t for a list of available unit values that can be used here.

This function can be called at any time before generating the SVG file.

However to minimize the risk of ambiguities it's recommended to call it before any drawing operations have been performed on the given surface, to make it clearer what the unit used in the drawing operations is.

The simplest way to do this is to call this function immediately after creating the SVG surface.

Note if this function is never called, the default unit for SVG documents generated by cairo will be "pt". This is for historical reasons.

Since: 1.16

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.

Since: 1.2

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().

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.

Since: 1.2

CAIRO_HAS_SVG_SURFACE

#define CAIRO_HAS_SVG_SURFACE 1

Defined if the SVG surface backend is available. This macro can be used to conditionally compile backend-specific code.

Since: 1.2

enum 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.

Since: 1.2

enum cairo_svg_unit_t

CAIRO_SVG_UNIT_USER : User unit, a value in the current coordinate system. If used in the root element for the initial coordinate systems it corresponds to pixels. (Since 1.16) CAIRO_SVG_UNIT_EM : The size of the element's font. (Since 1.16) CAIRO_SVG_UNIT_EX : The x-height of the element’s font. (Since 1.16) CAIRO_SVG_UNIT_PX : Pixels (1px = 1/96th of 1in). (Since 1.16) CAIRO_SVG_UNIT_IN : Inches (1in = 2.54cm = 96px). (Since 1.16) CAIRO_SVG_UNIT_CM : Centimeters (1cm = 96px/2.54). (Since 1.16) CAIRO_SVG_UNIT_MM : Millimeters (1mm = 1/10th of 1cm). (Since 1.16) CAIRO_SVG_UNIT_PT : Points (1pt = 1/72th of 1in). (Since 1.16) CAIRO_SVG_UNIT_PC : Picas (1pc = 1/6th of 1in). (Since 1.16) CAIRO_SVG_UNIT_PERCENT : Percent, a value that is some fraction of another reference value. (Since 1.16)

cairo_svg_unit_t is used to describe the units valid for coordinates and lengths in the SVG specification.

See also: https://www.w3.org/TR/SVG/coords.htmlUnits https://www.w3.org/TR/SVG/types.htmlDataTypeLength https://www.w3.org/TR/css-values-3/lengths

Since: 1.16