nsISVGRendererGlyphGeometry Interface Reference
[Rendering Engine Interfaces]

import "nsISVGRendererGlyphGeometry.idl";

Inheritance diagram for nsISVGRendererGlyphGeometry:

[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 glyph objects.

A glyph object is instantiated by the rendering backend for a given nsISVGGlyphGeometrySource object with a call to nsISVGRenderer::createGlyphGeometry(). The glyph object is assumed to store a reference to its associated source object and provide glyph rendering and hit-testing for the (composite) glyph described by the nsISVGGlyphGeometrySource members.

Definition at line 66 of file nsISVGRendererGlyphGeometry.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 nsISVGRendererGlyphGeometry::render (  in nsISVGRendererCanvas  canvas  )

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

nsISVGRendererRegion nsISVGRendererGlyphGeometry::update (  in unsigned long  updatemask  )

Called by this object's corresponding nsISVGGlyphGeometrySource 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 nsISVGGlyphGeometrySource. Returns: Region that needs to be redrawn.

nsISVGRendererRegion nsISVGRendererGlyphGeometry::getCoveredRegion (   )

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

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

Hit-testing method. Does this glyph geometry (with all relevant transformations applied) contain the point x,y? Should work on a character-cell basis, rather than the actual character outline. Parameters: x  X-coordinate of test point. y  Y-coordinate of test point. Returns: PR_TRUE if the glyph 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/nsISVGRendererGlyphGeometry.idl

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