Mac OSX 
 addtogroup renderer_interfaces Rendering Engine Interfaces
 @{


 One of a number of interfaces (all starting with nsISVGRenderer*)
 to be implemented by an SVG rendering engine. See nsISVGRenderer
 for more details.

 The SVG rendering backend uses this interface to communicate to the
 rendering engine-native path objects.

 A path geometry object is instantiated by the rendering backend for
 a given nsISVGPathGeometrySource object with a call to
 nsISVGRenderer::createPathGeometry(). The path geometry object is
 assumed to store a reference to its associated source object and
 provide rendering, hit-testing and metrics for the path described
 by the nsISVGPathGeometrySource members.
[scriptable, uuid(1e4a2bc7-96e6-4c4d-80a6-e284cec9e3aa)]
interface nsISVGRendererPathGeometry : nsISupports

Attributes

 Bounding box (does not include stroke width)
readonly attribute nsIDOMSVGRect boundingBox

Methods

 Hit-testing method. Does this path geometry (with all relevant
 transformations applied) contain the point x,y? Mode of operation
 (e.g. whether to test fill or stroke) is determined by
 nsISVGPathGeometrySource::hittestMask.

 @param x X-coordinate of test point.  @param y Y-coordinate of
 test point.
 @return PR_TRUE if the path geometry contains the point,
 PR_FALSE otherwise.
boolean containsPoint(in float x, in float y) 
 Get a region object describing the area covered with paint by
 this path geometry.

 @return Covered region.
nsISVGRendererRegion getCoveredRegion() 
 Paint this object.

 @param canvas The canvas to render to.
void render(in nsISVGRendererCanvas canvas) 
 Called by this object's corresponding nsISVGPathGeometrySource as
 a notification that some of the source's data (identified by
 paramter 'updatemask') has changed.

 @param updatemask An OR-ed combination of the UPDATEMASK_*
 constants defined in nsISVGPathGeometrySource.
 @return Region that needs to be redrawn.
nsISVGRendererRegion update(in unsigned long updatemask)