11.2. Setting Assistive Technology Preferences
Use the Assistive Technology preference tool to enable assistive technologies
in your desktop environment. You can also use the Assistive Technology preference tool to specify assistive technology applications
to start automatically when you log in.
Table 11.1 lists the font settings that you
can configure.
Table 11.1. Assistive Technology Settings
Setting |
Description |
Enable assistive technologies
|
Select this option to enable assistive technologies
in your desktop environment. |
Screenreader
|
Select this option to start the Screenreader application automatically when you log in. |
Magnifier
|
Select this option to start the Magnifier application automatically when you log in. |
On-screen keyboard
|
Select this option to start the On-screen keyboard application automatically when you log in. |
11.3. Configuring Keyboard Accessibility Options
Use the Keyboard accessibility
preference tool to set the keyboard accessibility preferences. The Keyboard accessibility preference tool is also known as AccessX.
You can customize the settings for the Keyboard
accessibility preference tool in the following functional areas:
Table 11.2 lists the basic keyboard accessibility
settings that you can modify.
Table 11.2. Keyboard Accessibility Settings
Option |
Function |
Enable keyboard
accessibility features
|
Select this option to enable keyboard accessibility features.
When you select this option, the other options in the preference tool become
available. |
Disable if unused for
|
Select this option to deactivate keyboard
accessibility preferences if the keyboard is not used for a specified period
of time. Use the slider to specify the number of seconds of keyboard idle
time required before the system disables the keyboard accessibility preferences.
When the specified number of seconds elapses, the following keyboard accessibility
preferences are disabled:
Bounce keys Mouse keys Slow keys Sticky keys Toggle keys |
Beep when features
turned on or off from keyboard
|
Select this option for an audible indication when a feature
such as sticky keys or slow keys is activated, or deactivated. |
Import Feature
Settings
|
Click on this button to import an AccessX configuration
file. |
|
Enable Sticky
Keys
|
Select this option to perform multiple simultaneous keypress operations by
pressing the keys in sequence. You can specify the following sticky keys settings:
Beep when modifier is pressed: Select
this option for an audible indication when you press a modifier key.
Disable if two keys pressed together:
Select this option to specify that when you press two keys simultaneously,
you can no longer press keys in sequence to perform multiple simultaneous
keypresses. |
|
Repeat Keys
|
Select this option to enable
the autorepeat settings for your keyboard.
Delay: Use this setting to specify the
interval to wait after the first keypress before the automatic repeat of a
pressed key.
Speed: Use this setting to specify the
number of characters per second to enter. |
Type to test settings
|
The
test area is an interactive interface so you can see how the keyboard settings
affect the display as you type. Type text in the test area to test the effect
of your settings. |
For more information
on configuring keyboard accessibility preferences, see GNOME 2.2
Desktop Accessibility Guide.
Table 11.3 lists the filter settings that
you can modify.
Table 11.3. Filter Settings
Option |
Function |
Enable keyboard
accessibility features
|
Select this option to enable keyboard accessibility features.
When you select this option, the other options in the preference tool become
available. |
|
Enable Slow Keys
|
Select this option to control the period of time that you must press-and-hold
a key before acceptance. You can specify the following slow keys settings:
Only accept keys held for: Use this setting
to specify the period of time that you must press-and-hold a key before acceptance.
Beep when key is: Select the appropriate
option or options for an audible indication when a key is pressed, accepted,
or rejected. |
|
Enable Bounce
Keys
|
Select this option to accept a key input and to control the key repeat characteristics
of the keyboard. You can specify the following bounce keys settings:
Ignore duplicate keypresses within: Use
this setting to specify the interval to wait after the first keypress before
the automatic repeat of a pressed key.
Beep if key is rejected: Select this
option for an audible indication of key rejection. |
|
Enable Toggle
Keys
|
Select this option for an audible indication of a toggle keypress. You hear
one beep when a toggle key is turned on. You hear two beeps when a toggle
key is turned off. |
Type to test settings
|
The
test area is an interactive interface so you can see how the keyboard settings
affect the display as you type. Type text in the test area to test the effect
of your settings. |
For more information
on configuring keyboard accessibility preferences, see GNOME 2.2
Desktop Accessibility Guide.
Table 11.4 lists the mouse settings that
you can modify.
Table 11.4. Mouse Settings
Option |
Function |
Enable keyboard
accessibility features
|
Select this option to enable keyboard accessibility features.
When you select this option, the other options in the preference tool become
available. |
|
Enable Mouse Keys
|
Select this option to make the numeric keypad emulate mouse actions. You can
specify the following mouse key settings:
Maximum pointer speed: Use this setting
to specify the maximum speed that the pointer moves across the screen.
Time to accelerate to maximum speed:
Use this setting to specify the duration of the acceleration time of the pointer.
Delay between keypress and pointer movement:
Use this setting to specify the period of time that must pass after a keypress
before the pointer moves. |
Mouse Preferences
|
Click on this button to open the Mouse preference tool. |
For more information
on configuring keyboard accessibility preferences, see GNOME 2.2
Desktop Accessibility Guide.
