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mode property

  • Artigo

Gets a value that indicates one of the image-blending modes.

This property is read-only.

 

Syntax

HRESULT get_mode(
  [out] SVGAnimatedEnumeration **normal | multiply | screen | darken | lighten
);

Property values

Type: SVGAnimatedEnumeration

One of the following image-blending mode values.

The image-blending modes are defined by formulas that use the following shorthand values:

  • cr = Result color (RGB) - premultiplied
  • qa = Opacity value at a given pixel for image A
  • qb = Opacity value at a given pixel for image B
  • ca = Color (RGB) at a given pixel for image A - premultiplied
  • cb = Color (RGB) at a given pixel for image B - premultiplied
Value Condition
normal normal

Indicates the following formula is used for computing result color:

cr = (1 - qa) * cb + ca

The normal blend mode is equivalent to operator="over" on the feComposite filter primitive, matches the blending method used by the feMerge filter, and matches the simple alpha compositing technique used in SVG for all compositing outside of filter effects.
multiply multiply

Indicates the following formula is used for computing result color:

cr = (1-qa)*cb + (1-qb)*ca + ca*cb
screen screen

Indicates the following formula is used for computing result color:

cr = cb + ca - ca * cb
darken darken

Indicates the following formula is used for computing result color:

cr = Min ((1 - qa) * cb + ca, (1 - qb) * ca + cb)
lighten lighten

Indicates the following formula is used for computing result color:

cr = Max ((1 - qa) * cb + ca, (1 - qb) * ca + cb)

 

String format

normal | multiply | screen | darken | lighten

Standards information

Remarks

If the mode attribute is not specified, then the effect is as if a value of normal were specified.