Method
RsvgHandlerender_element
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 |
cairo_t |
A Cairo context. |
|
The data is owned by the caller of the function. | |
id |
const char* |
An element’s id within the SVG, starting with “#” (a single
hash character), for example, |
|
The argument can be NULL . | |
The data is owned by the caller of the function. | |
The value is a NUL terminated UTF-8 string. | |
element_viewport |
RsvgRectangle |
Viewport size in which to fit the element. |
|
The data is owned by the caller of the function. | |
error |
GError ** |
The return location for a GError* , or NULL . |
Return value
Returns: | gboolean |
API ordering: This function must be called on a fully-loaded Panics: this function will panic if the |