APPENDIX H
1124
Compatibility and Implementation Notes
number of colors - 1. Acrobat 6.0 can handle this case properly, as well as
the correct value of
hival
; for compatibility with 5.0 viewers, it is necessary
to specify
hival
as the number of colors.
Also, Acrobat viewers do not support authoring or rendering posters
when the value of
Poster
is
true
.
153. Acrobat viewers treat a
FWScale
value of
[999 1]
as full screen.
154. Acrobat viewers never allow any portion of a floating window to be off-
screen.
155. The PDF language contains no direct method of initiating an alternate
presentation-defined slideshow. Instead, a slideshow is invoked by a
JavaScript call that is typically triggered by an interactive form element
(see Section 8.6, “Interactive Forms”). Refer to the
JavaScript for Acrobat
API Reference
(see the Bibliography) for information on starting and stop-
ping a slideshow using JavaScript.
156. The only type of slideshow supported in Acrobat 5.1 and later is an SVG
slideshow (MIME content type
image/svg+xml
). Acrobat supports the
Scalable Vector Graphics (SVG) 1.0 Specification
defined by the W3C (see
the Bibliography). Implementation notes on support of SVG by Adobe
products are available at <http://www.adobe.com/svg/>.
All resources must be either image XObjects (see Section 4.8.4, “Image
•
Image XObjects used for slideshows must use the
DCTDecode
filter and
an RGB color space. Color profile information must be specified in the
image XObject dictionary as well as embedded within the JPEG stream.
•
Embedded audio files must be of type
.wav
(supported on Windows
only, MIME type
audio/x-wav
) or
.mp3
(MIME type
audio/mpeg
, docu-
mented at <http://www.chiariglione.org/mpeg/index.htm>).
•
Embedded video must be QuickTime-compatible files of type
.avi
(MIME type
video/ms-video
) or
.mov
(MIME type
video/quicktime