Unverified Commit 59ed3fa2 authored by Victor Engmark's avatar Victor Engmark
Browse files

scarab: Apply scaling factor in Wayland 

Sets `AVALONIA_GLOBAL_SCALE_FACTOR` to the GNOME desktop scaling factor
based on
<https://github.com/AvaloniaUI/Avalonia/issues/9390#issuecomment-2382126451>,
falling back to the X FreeType DPI setting if the former is not
available.

Does not include `gsettings` and `xrdb` in build inputs, since these
should be available on the relevant platforms.

Bash does not support decimal/floating point arithmetic, so this *does*
include `bc` in the runtime dependencies.
parent b49da1f7

pkgs/tools/games/scarab/default.nix

+7 −0
Original line number Diff line number Diff line 
{

  lib,

  bc,

  buildDotnetModule,

  fetchFromGitHub,

  copyDesktopItems,
@@ -29,6 +30,10 @@ buildDotnetModule rec { 
      -n nuget.org --configfile NuGet.Config

  '';



  runtimeDeps = [

    bc

  ];



  nativeBuildInputs = [

    copyDesktopItems

    icoutils
@@ -45,6 +50,8 @@ buildDotnetModule rec { 
      size=''${sizes[$i]}x''${sizes[$i]}

      install -D omegamaggotprime_''$((i+1))_''${size}x32.png $out/share/icons/hicolor/$size/apps/scarab.png

    done



    wrapProgram "$out/bin/Scarab" --run '. ${./scaling-settings.bash}'

  '';



  desktopItems = [

pkgs/tools/games/scarab/scaling-settings.bash

0 → 100644
+24 −0
Original line number Diff line number Diff line 
# Keep existing value if it is already non-empty

if [[ -z "${AVALONIA_GLOBAL_SCALE_FACTOR-}" ]] && command -v gsettings >/dev/null; then

    echo 'Attempting to get GNOME desktop interface scaling factor' >&2

    AVALONIA_GLOBAL_SCALE_FACTOR="$(gsettings get org.gnome.desktop.interface scaling-factor)"

    AVALONIA_GLOBAL_SCALE_FACTOR="${AVALONIA_GLOBAL_SCALE_FACTOR##* }"

fi



if [[ "${AVALONIA_GLOBAL_SCALE_FACTOR-}" == "0" ]]; then

    echo 'Unset invalid scaling value' >&2

    unset AVALONIA_GLOBAL_SCALE_FACTOR

fi



if [[ -z "${AVALONIA_GLOBAL_SCALE_FACTOR-}" ]] && command -v xrdb >/dev/null; then

    echo 'Attempting to get scaling factor from X FreeType DPI setting' >&2

    dpi="$(xrdb -get Xft.dpi)"

    if [[ -n "${dpi}" ]]; then

        AVALONIA_GLOBAL_SCALE_FACTOR=$(echo "scale=2; ${dpi}/96" | bc)

    fi

fi



if [[ -n "${AVALONIA_GLOBAL_SCALE_FACTOR-}" ]]; then

    echo "Applying scale factor: ${AVALONIA_GLOBAL_SCALE_FACTOR}" >&2

    export AVALONIA_GLOBAL_SCALE_FACTOR

fi