3. BrailleBraille
Configuring Cthulhu's braille display support
Joanmarie Diggsjoanied@gnome.org
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Braille PreferencesEnable Braille Support
This check box toggles whether or not Cthulhu will make
use of a braille display. If BrlTTY is not running, Cthulhu
will recover gracefully and will not communicate with the braille
display.
Default value: not checked
If you configure BrlTTY later on, you need to restart Cthulhu
in order to use braille.
Enable word wrap
If Enable word wrap is checked, Cthulhu will adjust the
text so that only full words are shown on the braille display. If it is not
checked, Cthulhu will use all of the cells on the display so that
more text can be shown at once.
Default value: not checked
Enable Contracted Braille
Cthulhu supports contracted braille via the liblouis project. Because many
distros include liblouis, you will likely automatically have access to
contracted braille support in Cthulhu.
To enable contracted braille on a system where liblouis has been installed,
be sure that the Enable Contracted Braille checkbox is checked.
Then choose your desired translation table from the Contraction
Table combo box.
Default value: not checked
Abbreviated Role Names
This check box determines the manner in which role names are
displayed and can be used to help conserve real estate on the
braille display. For instance, if a slider had focus, the word
"slider" would be displayed if abbreviated role names is not
checked; if it were checked, "sldr" would be displayed instead.
Default value: not checked
Disable end of line symbol
Checking this checkbox tells Cthulhu to not present the
"$l" string at the end of a line of text.
Default value: not checked
Verbosity
This radio button group determines the amount of information that
will be brailled in certain situations. For example, if it is set
to verbose, keyboard shortcut and role name information is displayed.
This information is not displayed in brief mode.
Default value: Verbose
Selection and Hyperlink Indicators
The Selection Indicator and Hyperlink Indicator
radio button groups allow you to configure Cthulhu's behavior
when displaying selected text and hyperlinks. By default, when you
encounter either, Cthulhu will "underline" that text on
your braille display with Dots 7 and 8. If you would prefer, you
can change the indicator to only be Dot 7, only be Dot 8, or not
be present at all.
Default value: Dots 7 and 8
Text Attribute Indicators
You can also optionally have text attributes indicated in braille.
Enabling this feature and choosing which attributes are of
interest is done on the
Text Attributes page of the preferences dialog.
Flash Message Settings
Flash messages are similar in nature to notifications or announcements:
They are shown on your refreshable braille display for a brief time,
after which the original contents of the braille display are restored.
Cthulhu has several settings you can use to control flash message
presentation.
Enable flash messages
If Enable flash messages is checked, Cthulhu will
present messages to you in braille. If you prefer to only have
Cthulhu's messages spoken, you should uncheck this checkbox.
Default value: checked
Messages are detailed
If Messages are detailed is checked, Cthulhu will
present detailed messages to you in braille. For instance, if you
use Cthulhu's command to change echo, Cthulhu might
display "Echo set to word." If you would prefer shorter messages,
such as simply "word," you should uncheck this checkbox.
Default value: checked
Messages are persistent
As stated above, flash messages are only shown for a brief period of time.
If you would prefer messages remain displayed until you perform an action
which causes your display to be updated, you should check the Messages
are persistent checkbox.
Default value: not checked
Duration (secs)
The amount of time Cthulhu will wait before removing the message and
restoring the original contents of your display can be set in the
Duration (secs) spin button. Note that the value of this
setting will be ignored if you have enabled persistent flash messages.