Public bug reported:
[ Impact ]
Currently, the Desktop Icons NG (DING) extension included in Ubuntu
doesn't support integration with screen readers like Orca. This is a
disadvantage for visually impaired users.
Since DING is implemented as a classic GTK application, it should be
easy to wire it up to make use of the accessibility functions already
available thanks to the ATK library. A patch for that has been recently
uploaded to upstream, after a fix for this was requested by an user.
The patch takes advantage of the already implemented keyboard
navigation, and just makes these little changes:
* sets a readable accessible description for the Desktop Icons window
(because the application uses the invisible title bar to communicate
with the extension, thus it contains just "odd characters and numbers")
* sets an accessible description for each icon with the type and the
visible name of the file, and marks each icon as focusable
* when an icon is marked as selected, it gives the focus to it, thus
triggering the screen reader to read the accessible description
Also, the code for keyboard navigation is moved from the "key-press"
event to the "key-release" event, because that's the event used by the
accessibility subsystem, and not doing this results in an incorrect icon
being read by it.
[ Test plan ]
* Enable the Orca screen reader by pressing Mod+Alt+S. A voice will say
"Screen reader enabled" (or a similar, translated message).
* Click on the desktop to give the focus to it.
* Press the arrow keys to navigate with the keyboard through the icons.
Only one icon should be highlighted, and it should change when the
arrows are moved.
* After the test, the screen reader can be disabled by pressing the same
keys combination.
Expected results:
The screen reader should say the type and name of the selected icon,
every time the arrow keys are pressed to change the selected icon.
Current results:
The screen reader remains silent while navigating with the keyboard.
[ Where problems could occur ]
A change in the way GTK manages the focus could result in the keyboard
navigation to work incorrectly.
** Affects: gnome-shell-extension-desktop-icons-ng (Ubuntu)
Importance: Undecided
Status: New
** Patch added: "Patch to add accessibility support"
https://bugs.launchpad.net/bugs/2048390/+attachment/5736866/+files/add-accessibility-support.diff
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https://bugs.launchpad.net/bugs/2048390
Title:
Desktop icons doesn't support accessibility (specifically Orca)
Status in gnome-shell-extension-desktop-icons-ng package in Ubuntu:
New
Bug description:
[ Impact ]
Currently, the Desktop Icons NG (DING) extension included in Ubuntu
doesn't support integration with screen readers like Orca. This is a
disadvantage for visually impaired users.
Since DING is implemented as a classic GTK application, it should be
easy to wire it up to make use of the accessibility functions already
available thanks to the ATK library. A patch for that has been
recently uploaded to upstream, after a fix for this was requested by
an user.
The patch takes advantage of the already implemented keyboard
navigation, and just makes these little changes:
* sets a readable accessible description for the Desktop Icons window
(because the application uses the invisible title bar to communicate
with the extension, thus it contains just "odd characters and
numbers")
* sets an accessible description for each icon with the type and the
visible name of the file, and marks each icon as focusable
* when an icon is marked as selected, it gives the focus to it, thus
triggering the screen reader to read the accessible description
Also, the code for keyboard navigation is moved from the "key-press"
event to the "key-release" event, because that's the event used by the
accessibility subsystem, and not doing this results in an incorrect
icon being read by it.
[ Test plan ]
* Enable the Orca screen reader by pressing Mod+Alt+S. A voice will
say "Screen reader enabled" (or a similar, translated message).
* Click on the desktop to give the focus to it.
* Press the arrow keys to navigate with the keyboard through the
icons. Only one icon should be highlighted, and it should change when
the arrows are moved.
* After the test, the screen reader can be disabled by pressing the
same keys combination.
Expected results:
The screen reader should say the type and name of the selected icon,
every time the arrow keys are pressed to change the selected icon.
Current results:
The screen reader remains silent while navigating with the keyboard.
[ Where problems could occur ]
A change in the way GTK manages the focus could result in the keyboard
navigation to work incorrectly.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-desktop-icons-ng/+bug/2048390/+subscriptions
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