render_element
Description:
public bool render_element (Context cr, string? id, Rectangle element_viewport) throws Error
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.
Parameters:
| this |
An [class@Rsvg.Handle] |
| cr |
A Cairo context |
| id |
An element's id within the SVG, starting with "#" (a single hash character), for example, ` |
| element_viewport |
Viewport size in which to fit the element |
Returns:
|
`TRUE` on success, `FALSE` on error. Errors are returned in the throws argument. API ordering: This function must be called on a fully-loaded this. See the section "[API ordering]( class.Handle.html#api-ordering)" for details. Panics: this function will panic if the this is not fully-loaded. |