nsISVGRendererPathGeometry Interface Reference
[Rendering Engine Interfaces]

import "nsISVGRendererPathGeometry.idl";

Inheritance diagram for nsISVGRendererPathGeometry:

[legend]List of all members.

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Detailed Description

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.

Definition at line 65 of file nsISVGRendererPathGeometry.idl.

Public Member Functions

• void render (in nsISVGRendererCanvas canvas)
• nsISVGRendererRegion update (in unsigned long updatemask)
• nsISVGRendererRegion getCoveredRegion ()
• boolean containsPoint (in float x, in float y)

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Member Function Documentation

void nsISVGRendererPathGeometry::render (  in nsISVGRendererCanvas  canvas  )

Paint this object. Parameters: canvas  The canvas to render to. Referenced by nsSVGLibartPathGeometry::Render().

nsISVGRendererRegion nsISVGRendererPathGeometry::update (  in unsigned long  updatemask  )

Called by this object's corresponding nsISVGPathGeometrySource as a notification that some of the source's data (identified by paramter 'updatemask') has changed. Parameters: updatemask  An OR-ed combination of the UPDATEMASK_* constants defined in nsISVGPathGeometrySource. Returns: Region that needs to be redrawn.

nsISVGRendererRegion nsISVGRendererPathGeometry::getCoveredRegion (   )

Get a region object describing the area covered with paint by this path geometry. Returns: Covered region.

boolean nsISVGRendererPathGeometry::containsPoint (  in float  x, in float  y )

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. Parameters: x  X-coordinate of test point. y  Y-coordinate of test point. Returns: PR_TRUE if the path geometry contains the point, PR_FALSE otherwise.

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The documentation for this interface was generated from the following file:

• /layout/svg/renderer/public/nsISVGRendererPathGeometry.idl

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