forked from extern/nix-config
49e6b75969
Now it is possible to take advantage of different cursor sizes without restarting the X session.
64 lines
2.3 KiB
Bash
Executable File
64 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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# New Start: A modern Arch workflow built with an emphasis on functionality.
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# Copyright (C) 2018 Donovan Glover
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# This script will find the X server DPI and apply the necessary
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# settings to make Rofi, X, GNOME, and KDE applications have the
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# proper scaling, with no intervention from the user necessary.
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# Note that XDG_CURRENT_DESKTOP is required for KDE/Qt applications to
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# have the proper theming in non-Plasma environments. In contrast, GNOME
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# respects its theming even when XDG_CURRENT_DESKTOP is not set to it
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# (through settings.ini).
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# Note that the xcursor size is specified with:
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#
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# 1. The X server resource database (xrdb), of which cursor size is
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# only applied BEFORE your window manager starts
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# 2. The xsetroot command, which affects the cursor shown on the root
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# window (your desktop)
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# 3. The XCURSOR_SIZE environment variable, which affects the current
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# program
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#
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# There are a few things to take away from this:
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#
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# 1. The root window (desktop) cursor size MUST be changed with xsetroot
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# 2. KDE applications will honor XCURSOR_SIZE but NOT xsetroot
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# 3. GTK applications will honor xsetroot but NOT XCURSOR_SIZE
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#
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# Additionally,
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#
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# 4. SOME X applications require XCURSOR_SIZE to be set and will NOT
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# honor xsetroot
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# 5. SOME X applications require xsetroot to be set and will NOT
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# honor XCURSOR_SIZE
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#
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# So for a consistent variable cursor DPI environment, one has to set BOTH
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# xsetroot and XCURSOR_SIZE
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#
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# Note that existing windows will NOT have their X cursor size changed
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# if they don't depend on xsetroot. Because of this, and because of the
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# fact that active windows will not handle DPI changes anyway, you should
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# probably have no GUIs running when switching DPI.
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ROFI_DPI=$(xrdb -query | grep Xft.dpi | cut -f 2)
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ROFI_SCALE=$(expr $ROFI_DPI / 96)
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ROFI_DPI_SCALE=$(awk "BEGIN { print "1/$ROFI_SCALE" }")
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CURSOR_THEME=${XCURSOR_THEME:-breeze_cursors}
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CURSOR_SIZE=$((16 * $ROFI_SCALE))
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xsetroot -xcf "/usr/share/icons/$CURSOR_THEME/cursors/left_ptr" "$CURSOR_SIZE"
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env \
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XDG_CURRENT_DESKTOP="KDE" \
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QT_AUTO_SCREEN_SCALE_FACTOR="0" \
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QT_FONT_DPI="$ROFI_DPI" \
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QT_SCREEN_SCALE_FACTORS="VGA-1=$ROFI_SCALE;" \
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GDK_SCALE="$ROFI_SCALE" \
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GDK_DPI_SCALE="$ROFI_DPI_SCALE" \
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XCURSOR_SIZE="$CURSOR_SIZE" \
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rofi \
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-show drun \
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-dpi "$ROFI_DPI"
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