Predefined keys of this dictionary.
Inheritance Hierarchy
PdfEdit.PdfKeysBase
PdfEdit.Pdf.AdvancedPdfSoftMaskKeys
Namespace: PdfEdit.Pdf.Advanced
Assembly: PdfPrintingNet (in PdfPrintingNet.dll) Version: 5.2.1.0 (5.2.1.0)
Syntax
The PdfSoftMaskKeys type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
 | PdfSoftMaskKeys | Initializes a new instance of the PdfSoftMaskKeys class |
Methods
| Name | Description | |
|---|---|---|
| Equals | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
 | Finalize | Allows an Object to attempt to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Returns a String that represents the current Object. (Inherited from Object.) |
Fields
| Name | Description | |
|---|---|---|
  | BC |
(Optional) An array of component values specifying the color to be used
as the backdrop against which to composite the transparency group XObject G.
This entry is consulted only if the subtype S is Luminosity. The array consists of
n numbers, where n is the number of components in the color space specified
by the CS entry in the group attributes dictionary.
Default value: the color space’s initial value, representing black.
|
| G |
(Required) A transparency group XObject to be used as the source of alpha
or color values for deriving the mask. If the subtype S is Luminosity, the
group attributes dictionary must contain a CS entry defining the color space
in which the compositing computation is to be performed.
|
| S |
(Required) A subtype specifying the method to be used in deriving the mask values
from the transparency group specified by the G entry:
Alpha: Use the group’s computed alpha, disregarding its color.
Luminosity: Convert the group’s computed color to a single-component luminosity value.
|
| TR |
(Optional) A function object specifying the transfer function to be used in
deriving the mask values. The function accepts one input, the computed
group alpha or luminosity (depending on the value of the subtype S), and
returns one output, the resulting mask value. Both the input and output
must be in the range 0.0 to 1.0; if the computed output falls outside this
range, it is forced to the nearest valid value. The name Identity may be
specified in place of a function object to designate the identity function.
Default value: Identity.
|
| Type |
(Optional) The type of PDF object that this dictionary describes;
if present, must be Mask for a soft-mask dictionary.
|
See Also