SECTION 8.4
641
Anno ta tions
annotation dictionary entries specific to this type of annotation; interactive forms
and fields are discussed at length in Section 8.6.
TABLE 8.39 Additional entries specific to a widget annotation
KEY
TYPE
VALUE
Subtype
name
name
(Required)
The type of annotation that this dictionary describes; must be
Widget
for a widget annotation.
(Optional)
The annotation’s
highlighting mode,
the visual effect to be used when
the mouse button is pressed or held down inside its active area:
N
I
O
P
H
(None) No highlighting.
(Invert) Invert the contents of the annotation rectangle.
(Outline) Invert the annotation’s border.
(Push) Display the annotation’s down appearance, if any (see Section
the contents of the annotation rectangle to appear as if it were being
pushed below the surface of the page.
(Toggle) Same as
P
(which is preferred).
T
A highlighting mode other than
P
overrides any down appearance defined for
the annotation. Default value:
I
.
MK
dictionary
(Optional)
An appearance characteristics dictionary (see Table 8.40) to be used
in constructing a dynamic appearance stream specifying the annotation’s visual
presentation on the page.
The name
MK
for this entry is of historical significance only and has no direct
meaning.
A
dictionary
dictionary
(Optional; PDF 1.1)
An action to be performed when the annotation is activated
(see Section 8.5, “Actions”).
(Optional; PDF 1.2)
An additional-actions dictionary defining the annotation’s
behavior in response to various trigger events (see Section 8.5.2, “Trigger
(Optional; PDF 1.2)
A border style dictionary (see Table 8.17 on page 611) speci-
fying the width and dash pattern to be used in drawing the annotation’s border.
Note:
The annotation dictionary’s
AP
entry, if present, takes precedence over the
L
and
BS
entries; see Table 8.15 on page 606 and Section 8.4.4, “Appearance Streams.”
AA
BS
dictionary