NAME¶
dspdfviewer - Dual-Screen PDF Viewer
SYNOPSIS¶
dspdfviewer [
options]
[filename]
DESCRIPTION¶
dspdfviewer is intended for presentations created with the
latex-beamer class, specifically documents created with the show notes
on second screen=right option.
Its purpose is to display the left half of a page on the audience's screen
(which will most commonly be a projector) and the right half on your
"private" screen (think: the notebook you carried to the
presentation site). The basic idea is that you will display personal notes and
information to help you with your presentation on your personal screen, while
the audience sees only the PDF they are supposed to see.
On the secondary screen you will see three clocks: A "wall clock", a
"presentation" clock and a "slide" clock.
The wall clock in the bottom left corner that display current time of day, the
presentation clock (labeled "Total") counts the time you spent since
you started the presentation, and the "slide" counter (bottom right)
displays the time you spent on the current slide.
The clocks don't start the second you launch the program, the idea behind that
behaviour is that many people have a "title" slide active long
before the audience even arrives.
Once you use the next/previous slide commands, the clock starts. If you want to
start the clock, but still display the title slide, just press
"previous" (for example, Up Arrow or Right Mouse Button) on the
title slide.
If you want to reset the clocks to zero, press the "Home" button on
the keybord.
OPTIONS¶
The exact behaviour of
dspdfviewer is configurable using command-line
parameters.
Unless otherwise noted, all command-line options can be written in a
configuration file. See the
FILES section for the location.
For the command-line parameters, this program follows the usual GNU command line
syntax, with long options starting with two dashes ('-'). A summary of options
is included below.
If you specify those in a configuration file, write one option per line, use the
long version without the two leading dashes, followed by an equals sign
and the desired value.
For example,
bottom-pane-height=20 is a valid configuration line.
If an option is specified in
both the configuration file and the
command-line, the command-line value takes precedence.
Note for options of type
<bool>: They take
true,
false,
0 or
1 as arguments. For example,
--use-second-screen false can be expressed as
--use-second-screen
0 or shortened to
-u0.
- -h, --help
- Show summary of options.
- -f, --full-page
- Use the presentation program with a normal single-screen PDF, that is
display the full page on both the primary and secondary monitor.
The secondary screen still contains timers and thumbnails to help you with
your presentation, unless you disable them using the options below.
- -u, --use-second-screen <bool>
- Controls whether the program actually works as a dual-screen viewer.
The default is true.
If you only have one screen, but still want to use the cache features, you
can set this option to false. If the window ends up on the wrong display,
you can still use the switch command (see below).
What comes out on the primary screen depends on whether you use the -f
Option: -u0 -f results in a simple full-screen PDF viewer, while -u0
without -f still splits the page in half and outputs only the left frame.
- -l, --hyperlink-support <bool>
- Controls whether the program makes PDF Hyperlinks clickable.
The default is true.
While it is normally desired to have clickable hyperlinks, if you cannot
control the position of your pointer (if your remote control has only
left-click and right-click) it might be safer to disable hyperlinks.
- --prerender-previous-pages n
- When jumping to slide m, also pre-render the slides (m-n)..(m-1) (default
3)
Note: If you set this to zero, you will not get a thumbnail for the previous
page rendered before you have visited it.
- --prerender-next-pages n
- When jumping to slide m, also pre-render the slides (m+1)..(m+n) (default
10)
Note: If you set this to zero, you will not get a thumbnail for the next
page rendered before you have visited it.
- --cache-size n (in megabytes / MiB)
- This controls how much memory dspdfviewer is allowed to use for caching
rendered pages. The default value is 1024, meaning 1 GiB of RAM. Note that
the memory used for active rendering processes, as well as the currently
displayed images are not included in the accounting, so the total memory
usage of dspdfviewer will be higher than this.
CAVEAT: It is currently not verified that this memory is enough to hold all
prerendered pages. If you make the cache too small to hold the prerendered
pages, it will start dropping the first rendered (adjacent to the current
page), resulting in very poor performance. If in doubt, set a larger cache
or a lower prerender amount.
- -a, --presenter-area <bool>
- Show (true, 1) or hide (false, 0) the presenter's area on the second
screen. If this is set to zero, the following options will have no effect.
- -d, --duplicate <bool>
- Duplicate (true, 1) or hide (false, 0) the audience's screen next to the
notes on the second screen. The default is false.
- -t, --thumbnails <bool>
- Show (true, 1) or hide (false, 0) the thumbnails on the second screen.
- -T, --thumbnail-page-part <pagepart>
- Show this part of the page for thumbnails, valid values are
"left", "right" or "both".
- -w, --wall-clock <bool>
- Show (true, 1) or hide (false, 0) the wall clock on the second screen.
- -p, --presentation-clock <bool>
- Show (true, 1) or hide (false, 0) the presentation clock on the second
screen.
- -s, --slide-clock <bool>
- Show (true, 1) or hide (false, 0) the slide clock on the second screen.
- -b, --bottom-pane-height n
- Configure how large the presenter area on the second screen will be, unit
is percent of second screen's total height.
Default value 20.
- --i3-workaround <bool>
- This tries to ask the i3 window manager (by calling the i3-msg command) to
move the audience window to "the other screen".
This is considered an experimental feature and disabled by default. Read the
runtimeconfiguration.cpp source code for more info.
CONTROLS¶
You can use the following controls while
dspdfviewer is running.
Note that mouse-clicks are subject to pointer position if the hyperlink support
is enabled. If your mouse cursor changes to a hand, it will follow the link
you are hovering on a click.
- Keyboard: ?, F1
- Display quick-help (most important key bindings)
- Keyboard: Spacebar, Page Down / Mouse: Left-Click, Wheel Down
- Go one page forward
Additional keyboard aliases: Down, Right, Return, Enter, N, F
- Keyboard: Backspace, Page Up / Mouse: Right-Click, Wheel Up
- Go one page backward
Additional keyboard aliases: Up, Left, P
- Keyboard: B, . (period)
- Toggle blanking of the audience screen
- Keyboard: G
- Go to specific page (a number entry window will pop up)
Note that the this counts PDF pages, so a single slide having 6 unmasking
steps will be 7 PDF pages long, including the initial near-blank page.
- Keyboard: Home, H
- Go to the first page and reset the clocks to zero.
Use this if you want the clocks to stop at zero, use the G (goto) function
to page 1 if you want to them to keep running.
Note that the Home key may be called "Pos 1" on some keyboards.
- Keyboard: Escape, Q
- Quit dspdfviewer.
- Keyboard: S, F12
- Switch primary and secondary screens
Use this if the audience sees your 'note' side with the clocks and you see
the actual presentation on your screen.
If you just want to see the main presentation (for example, because the
projector is behind you), use T.
- Keyboard: T
- Switch secondary screen's function
Use this if you want to see the audience side on your screen, without
showing the notes to the audience. Pressing the button again will switch
back to normal operation.
- Keyboard: D
- Switch duplication of the audience's screen
Use this if you want to see the audience side and the notes on your screen
(so the full presentation), leaving the audience's screen untouched.
Pressing the button again will switch back to split mode.
FILES¶
- ~/.config/dspdfviewer.ini
- You can specify all long command-line options (without leading --) here,
in a "option=value" format, one per line.
PRESENTER REMOTE CONTROLS¶
Most (maybe not all) presenter remote controls technically act as a keyboard
sending one of the keystrokes listed either in the main or additional
keybindings. If your remote control does not work as intended, please file a
bug report describing what keystrokes it generates when you press its buttons.
If there is no conflict, a keybinding will be included in the next release.
BUGS¶
None currently known.
If you find any bugs, the preferred way to report them is at the github issue
tracker at
https://github.com/dannyedel/dspdfviewer/issues.
As a fallback, you can send e-mail to mail@danny-edel.de with the word
"dspdfviewer" in the subject line.
SEE ALSO¶
- /usr/share/doc/latex-beamer/beameruserguide.pdf.gz
- from the latex-beamer package on how to create beamer
presentations.
Note: Use "show notes on second screen=right" because
dspdfviewer assumes that the right half of the page is the notes.
- http://dspdfviewer.danny-edel.de
- for installation instructions and new release announcements.