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documentation/content/en/books/accessibility/lowvision/_index.adoc
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| This chapter outlines accessibility features available in graphical desktop environments designed for users with low vision, such as virtual magnifiers, easy-to-read fonts, and screen scaling. | This chapter outlines accessibility features available in graphical desktop environments designed for users with low vision, such as virtual magnifiers, easy-to-read fonts, and screen scaling. | ||||
| [[hidpi]] | [[hidpi]] | ||||
| == Desktop Size | == Desktop Size | ||||
| Graphical environments allow users to adjust the desktop display size, a feature commonly known as screen scaling or HiDPI scaling. | Graphical environments allow users to adjust the desktop display size, a feature commonly known as screen scaling or HiDPI scaling. | ||||
| The goal is to enlarge desktop elements such as icons, text, and windows to improve visibility and accessibility. | The goal is to enlarge desktop elements such as icons, text, and windows to improve visibility and accessibility. | ||||
| [[kde-hidpi]] | |||||
| === KDE Plasma | |||||
| Open the `_Display Configuration_` module: | |||||
| [source,shell] | |||||
| .... | |||||
| % kcmshell6 kcm_kscreen | |||||
| .... | |||||
| Select the scaling via the `_Global Scale_` bar. | |||||
| The change will take effect after a KDE Plasma restart. | |||||
| [[xfce-hidpi]] | [[xfce-hidpi]] | ||||
| === XFCE | === XFCE | ||||
| To set a custom scaling factor, for example 4, run the following command: | To set a custom scaling factor, for example 4, run the following command: | ||||
| [source,shell] | [source,shell] | ||||
| .... | .... | ||||
| % xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 4 | % xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 4 | ||||
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| [source,shell] | [source,shell] | ||||
| .... | .... | ||||
| # pkg install atkinson-hyperlegible | # pkg install atkinson-hyperlegible | ||||
| .... | .... | ||||
| The remainder of this section describes how to set up fonts in various graphical environments using _atkinson-hyperlegible_ as an example. | The remainder of this section describes how to set up fonts in various graphical environments using _atkinson-hyperlegible_ as an example. | ||||
| [[kde-fonts]] | |||||
| === KDE Plasma | |||||
| KDE allows selecting a font and its size via the `_Fonts_` module. | |||||
bcr: s/allow/allows/
or even:
KDE allows selecting ... (active voice) | |||||
Done Inline ActionsI'll use "KDE allows selecting" to fix asiciliano: I'll use "KDE allows selecting" to fix | |||||
| Run: | |||||
| [source,shell] | |||||
| .... | |||||
| % kcmshell6 kcm_fonts | |||||
| .... | |||||
| Click on the Adjust `_All Fonts..._` button to select the font and its size for all graphical elements. | |||||
| Alternatively, you can choose the font and size for individual elements using the forms below. | |||||
| At the bottom of the window, you can also select options such as `_Anti-Aliasing_`, `_Sub-pixel Rendering_`, `_Hinting_`, and `_Force Font DPI_`. | |||||
| Each option has an icon on the right to open a help dialog. | |||||
| [[xfce-fonts]] | [[xfce-fonts]] | ||||
| === XFCE | === XFCE | ||||
| XFCE allows you to select the font and size for window titles and content text, as well as the font size for icon labels. | XFCE allows you to select the font and size for window titles and content text, as well as the font size for icon labels. | ||||
| [source,shell] | [source,shell] | ||||
| .... | .... | ||||
| % xfconf-query -c xfwm4 -p /general/title_font -s "Atkinson Hyperlegible 15" <1> | % xfconf-query -c xfwm4 -p /general/title_font -s "Atkinson Hyperlegible 15" <1> | ||||
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| [[lowvision-mouse]] | [[lowvision-mouse]] | ||||
| == Mouse | == Mouse | ||||
| [[mouse-apparance]] | [[mouse-apparance]] | ||||
| === Apparance | === Apparance | ||||
| Some desktop environments allow you to change the size, color, and other graphical properties of the mouse cursor. | Some desktop environments allow you to change the size, color, and other graphical properties of the mouse cursor. | ||||
| [[kde-mouse]] | |||||
| ==== KDE Plasma | |||||
| KDE Plasma provides the `_Cursors_` module to select the mouse cursor theme and size. | |||||
| To launch it, run: | |||||
| [source,shell] | |||||
| .... | |||||
| % kcmshell6 kcm_cursortheme | |||||
| .... | |||||
| Select an installed cursor theme in the window. | |||||
| There is a `_Size_` drop-down menu in the top left corner to choose the mouse cursor size, | |||||
| available sizes depend on the selected theme. | |||||
| Click the `_Get New..._` icon in the top right corner to install a new theme. | |||||
| You can install new themes from the new window. | |||||
| As a suggestion, search for `_Large Mouse Cursors_`, a black and white high contrast theme. | |||||
| [[xfce-mouse]] | [[xfce-mouse]] | ||||
| ==== XFCE | ==== XFCE | ||||
| XFCE allows you to set the size and color of the mouse pointer via `_Mouse and Touchpad_` dialog. | XFCE allows you to set the size and color of the mouse pointer via `_Mouse and Touchpad_` dialog. | ||||
| To run the dialog start: | To run the dialog start: | ||||
| [source,shell] | [source,shell] | ||||
| .... | .... | ||||
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| .... | .... | ||||
| % xfconf-query -c xsettings -n -p /Gtk/CursorThemeSize -s 50 | % xfconf-query -c xsettings -n -p /Gtk/CursorThemeSize -s 50 | ||||
| .... | .... | ||||
| [[find-mouse-cursor]] | [[find-mouse-cursor]] | ||||
| === Find Cursor | === Find Cursor | ||||
| Some desktop environments provide a visul feedback of the mouse pointer's current position. | Some desktop environments provide a visul feedback of the mouse pointer's current position. | ||||
| [[kde-find-mouse-cursor]] | |||||
| ==== KDE Plasma | |||||
| KDE Plasma draws two circular lines moving around the mouse cursor. | |||||
| Open the `Desktop Effects` module: | |||||
| [source,shell] | |||||
| .... | |||||
| % kcmshell6 kcm_kwin_effects | |||||
| .... | |||||
| Enable the `_Track Mouse_` checkbox. | |||||
| Draw circular lines by pressing `Meta` + `Ctrl` keys. | |||||
| You can change the shortcut via the `_Configure_` button related to `_Track Mouse_`. | |||||
| [TIP] | |||||
| ==== | |||||
| On keyboards where the `Meta` key is not present, it is usually replaced by the `Super` key. | |||||
| Refer to https://en.wikipedia.org/wiki/Meta_key and https://en.wikipedia.org/wiki/Super_key_(keyboard_button) for more information. | |||||
| ==== | |||||
| [[xfce-find-mouse-cursor]] | [[xfce-find-mouse-cursor]] | ||||
| ==== XFCE | ==== XFCE | ||||
| Xfce draws large red circles around the mouse pointer. | Xfce draws large red circles around the mouse pointer. | ||||
| Type: | Type: | ||||
| [source,shell] | [source,shell] | ||||
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s/allow/allows/
or even:
KDE allows selecting ... (active voice)