SECTION 8.5
665
Actions
annotation provide the default values. Any information specified in the movie ac-
tion dictionary overrides these values.
TABLE 8.59 Additional entries specific to a movie action
KEY
TYPE
VALUE
S
name
dictionary
text string
(Required)
The type of action that this dictionary describes; must be
Movie
for a
movie action.
(Optional)
An indirect reference to a movie annotation identifying the movie to be
played.
(Optional)
The title of a movie annotation identifying the movie to be played.
Note:
The dictionary must include either an
Annotation
or a
T
entry but not both.
Annotation
T
Operation
name
(Optional)
The operation to be performed on the movie:
Play
Start playing the movie, using the play mode specified by the dic-
tionary’s
Mode
entry (see Table 9.31 on page 785). If the movie is
currently paused, it is repositioned to the beginning before play-
ing (or to the starting point specified by the dictionary’s
Start
en-
try, if present).
Stop playing the movie.
Pause a playing movie.
Resume a paused movie.
Stop
Pause
Resume
Default value:
Play
.
Hide Actions
A
hide action (PDF 1.2)
hides or shows one or more annotations on the screen by
setting or clearing their Hidden flags (see Section 8.4.2, “Annotation Flags”). This
type of action can be used in combination with appearance streams and trigger
events (Sections 8.4.4, “Appearance Streams,” and 8.5.2, “Trigger Events”) to dis-
play pop-up help information on the screen. For example, the
E
(enter) and
X
(ex-
it) trigger events in an annotation’s additional-actions dictionary can be used to
show and hide the annotation when the user rolls the cursor in and out of its ac-
tive area on the page. This can be used to pop up a help label, or tool tip,
describing the effect of clicking at that location on the page. Table 8.60 shows the
action dictionary entries specific to this type of action. (See implementation
notes 109 and 110 in Appendix H.)