Method
RsvgHandlerender_element
since: 2.46
Declaration [src]
gboolean
rsvg_handle_render_element (
  RsvgHandle* handle,
  cairo_t* cr,
  const char* id,
  const RsvgRectangle* element_viewport,
  GError** error
)
Description [src]
Renders a single SVG element to a given viewport.
This function can be used to extract individual element subtrees and render them,
scaled to a given element_viewport.  This is useful for applications which have
reusable objects in an SVG and want to render them individually; for example, an
SVG full of icons that are meant to be be rendered independently of each other.
Element IDs should look like an URL fragment identifier; for example, pass
#foo (hash foo) to get the geometry of the element that
has an id="foo" attribute.
You can pass NULL for the id if you want to render all
the elements in the SVG, i.e. to render everything from the
root element.
The element_viewport gives the position and size at which the named element will
be rendered.  FIXME: mention proportional scaling.
Available since: 2.46
Parameters
- cr
- 
            Type: cairo_tA Cairo context. The data is owned by the caller of the method. 
- id
- 
            Type: const char*An element’s id within the SVG, starting with “#” (a single hash character), for example, #layer1. This notation corresponds to a URL’s fragment ID. Alternatively, passNULLto render the whole SVG document tree.The argument can be NULL.The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string. 
- element_viewport
- 
            Type: RsvgRectangleViewport size in which to fit the element. The data is owned by the caller of the method. 
- error
- 
            Type: GError **The return location for a recoverable error. The argument can be NULL.If the return location is not NULL, then you must initialize it to aNULLGError*.The argument will be left initialized to NULLby the method if there are no errors.In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.
Return value
Type: gboolean
TRUE on success, FALSE on error.  Errors are returned
in the error argument.
API ordering: This function must be called on a fully-loaded handle.  See
the section “API ordering” for details.
Panics: this function will panic if the handle is not fully-loaded.