El Viernes 14 de febrero de 2014 17:25, Joseph Scheuhammer <cl...@alum.mit.edu>
escribió:
Improvements to the magnifier preferences dialog have been suggested.
>A mockup, courtesy of Allan Day, can be found at the following URL:
>https://raw.github.com/gnome-design-team/gnome-mockups/master/system-settings/universal-access/zoom-and-filters.png
>
>One of the additions is a check box labelled "Keep keyboard focus in
>view" that is on the left hand "Zoom" panel. This is for toggling the
>activation of focus/caret tracking.
>
>The gnome-shell magnifier supports tracking modes for widget focus,
>caret focus, and mouse pointer movement. Furthermore, these are
>independent of each other. However, the proposed dialog combines
>them. The radio buttons above the check box list different mouse
>tracking modes, i.e. "Push with pointer", "Follow pointer", and "Keep
>pointer centered". Whatever mode is set for the mouse will be used for
>both focus and caret tracking.
>
>The question is what do magnifier users want or need regarding tracking
>types? Are there use cases for having the types of tracking independent
>of each other? Or, if the user chooses "centered" for one, that
>applies to all? We would really like user input.
>
>To give a better idea of what this is about, I'll be the use case,
>since I use a magnifier on occasion, and at a low magnification factor
>(1.75x). My preference is "push" for mouse and caret tracking, but
>"centered" for focus tracking.
>
>With respect to the mouse, I prefer it behave as close as possible to
>the non-magnifier experience. On a standard desktop, the mouse moves,
>not the contents. The mouse tracking mode that comes the closest to
>that experience is "push", where the contents do not move in the
>magnified view until the mouse abuts up against an edge. When it does,
>the contents do move, but only enough to bring them into view.
>
>For myself, the text caret works in a similar way. When using a word
>processor, the caret generally moves in small increments -- left,
>right, up, and down -- and I prefer that the contents not move until
>they need to.
>
>However, when using the keyboard to tab-navigate around the UI, widget
>focus frequently jumps over large distances. For example, I may be
>near the bottom of the screen editing a text document when I use
>alt+tab to use the task switcher. Focus moves (warps) to the centre of
>the screen, far from where I was typing. I need to reorientto the new
>screen contents (my point of regard, so to speak), and, in my case,
>that is helped by centering the widget that just acquired focus -- I
>prefer "centered" tracking for changes in widget focus. Trying to
>preserve little or no movement in the contents is pointless here since
>focus is likely to move large distances.
>
>Now, that's just me, and I stress that I am **not**putting my
>preferences forward as any kind of standard. In fact, quite the
>opposite. Those are my user preferences. I fully expect other
>magnifier users to have different ones, and we would like to know yours
>so that we fully understand the needs and can incorporate them into the
>UI being designed: Do you use the same tracking mode for focus, caret,
>and mouse or different modes for each? And if you use different modes, why?
>
Hi Joseph !
I don't think you are the only one who prefers different tracking options. The
only case I know uses push for the mount pointer and center/smart for the text
caret and menu options.
I think we need more flexibility options in this feature because it can be used
for a wide range of people: cognitive problem like cerebral palsy that make
difficult to focus, different grades of low vision, people who can't use the
mouse or the keyboard as usual, etc.
Cheers,
-- Juanjo Marin
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