desktopToDarwinBundle: fix squircle icons
- Convert icons to a single .icns file; and - Provide an opt-out via X-macOS-Squircle in the desktop item to override the squircle behavior when the source icons look bad when converted automatically.
This commit is contained in:
Randy Eckenrode
parent
88ac8585ba
commit
30a09ae9ac
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@ -4,33 +4,34 @@ let
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pListText = lib.generators.toPlist { } {
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CFBundleDevelopmentRegion = "English";
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CFBundleExecutable = "$name";
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CFBundleIconFiles = [ "$iconPlistArray" ];
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CFBundleIconFile = "$icon";
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CFBundleIdentifier = "org.nixos.$name";
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CFBundleInfoDictionaryVersion = "6.0";
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CFBundleName = "$name";
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CFBundlePackageType = "APPL";
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CFBundleSignature = "???";
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};
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# The generation of the CFBundleIconFiles array is a bit of a hack, since we
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# will always end up with an empty first element (<string></string>) but macOS
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# appears to ignore this which allows us to use the nix PList generator.
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in writeScriptBin "write-darwin-bundle" ''
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shopt -s nullglob
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readonly prefix="$1"
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readonly name="$2"
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readonly exec="$3"
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iconPlistArray=""
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readonly prefix=$1
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readonly name=$2
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readonly exec=$3
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readonly icon=$4.icns
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readonly squircle=''${5:-1}
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readonly plist=$prefix/Applications/$name.app/Contents/Info.plist
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for icon in "$prefix/Applications/$name.app/Contents/Resources"/*; do
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iconPlistArray="$iconPlistArray</string><string>"$(basename "$icon")""
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done
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cat > "$prefix/Applications/$name.app/Contents/Info.plist" <<EOF
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cat > "$plist" <<EOF
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${pListText}
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EOF
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if [[ $squircle != 0 && $squircle != "false" ]]; then
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sed "
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s|CFBundleIconFile|CFBundleIconFiles|;
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s|<string>$icon</string>|<array><string>$icon</string></array>|
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" -i "$plist"
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fi
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cat > "$prefix/Applications/$name.app/Contents/MacOS/$name" <<EOF
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#!/bin/bash
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exec $prefix/bin/$exec
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@ -10,31 +10,147 @@ getDesktopParam() {
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awk -F "=" "/${pattern}/ {print \$2}" "${file}"
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}
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# Convert a freedesktop.org icon theme for a given app to a .icns file. When possible, missing
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# icons are synthesized from SVG or rescaled from existing ones (when within the size threshold).
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convertIconTheme() {
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local -r out=$1
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local -r sharePath=$2
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local -r iconName=$3
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local -r theme=${4:-hicolor}
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local -ra iconSizes=(16 32 128 256 512)
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local -ra scales=([1]="" [2]="@2")
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# Based loosely on the algorithm at:
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# https://specifications.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html#icon_lookup
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# Assumes threshold = 2 for ease of implementation.
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function findIcon() {
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local -r iconSize=$1
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local -r scale=$2
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local scaleSuffix=${scales[$scale]}
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local exactSize=${iconSize}x${iconSize}${scaleSuffix}
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local -a validSizes=(
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${exactSize}
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$(expr $iconSize + 1)x$(expr $iconSize + 1)${scaleSuffix}
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$(expr $iconSize + 2)x$(expr $iconSize + 2)${scaleSuffix}
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$(expr $iconSize - 1)x$(expr $iconSize - 1)${scaleSuffix}
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$(expr $iconSize - 2)x$(expr $iconSize - 2)${scaleSuffix}
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)
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for iconIndex in "${!candidateIcons[@]}"; do
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for maybeSize in "${validSizes[@]}"; do
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icon=${candidateIcons[$iconIndex]}
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if [[ $icon = */$maybeSize/* ]]; then
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if [[ $maybeSize = $exactSize ]]; then
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echo "fixed $icon"
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else
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echo "threshold $icon"
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fi
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return 0
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fi
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done
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done
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echo "scalable"
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}
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function resizeIcon() {
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local -r in=$1
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local -r out=$2
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local -r iconSize=$3
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local -r scale=$4
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local density=$(expr 72 \* $scale)x$(expr 72 \* $scale)
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local dim=$(expr $iconSize \* $scale)
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magick convert -scale "${dim}x${dim}" -density "$density" -units PixelsPerInch "$in" "$out"
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}
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function synthesizeIcon() {
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local -r in=$1
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local -r out=$2
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local -r iconSize=$3
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local -r scale=$4
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if [[ $in != '-' ]]; then
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local density=$(expr 72 \* $scale)x$(expr 72 \* $scale)
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local dim=$(expr $iconSize \* $scale)
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rsvg-convert --keep-aspect-ratio --width "$dim" --height "$dim" "$in" --output "$out"
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magick convert -density "$density" -units PixelsPerInch "$out" "$out"
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else
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return 1
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fi
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}
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function getIcons() {
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local -r sharePath=$1
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local -r iconname=$2
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local -r theme=$3
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local -r resultdir=$(mktemp -d)
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local -ar candidateIcons=(
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"${sharePath}/icons/${theme}/"*"/${iconname}.png"
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"${sharePath}/icons/${theme}/"*"/${iconname}.xpm"
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)
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local -a scalableIcon=("${sharePath}/icons/${theme}/scalable/${iconname}.svg"*)
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if [[ ${#scalableIcon[@]} = 0 ]]; then
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scalableIcon=('-')
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fi
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for iconSize in "${iconSizes[@]}"; do
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for scale in "${!scales[@]}"; do
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local iconResult=$(findIcon $iconSize $scale)
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local type=${iconResult%% *}
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local icon=${iconResult#* }
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local scaleSuffix=${scales[$scale]}
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local result=${resultdir}/${iconSize}x${iconSize}${scales[$scale]}${scaleSuffix:+x}.png
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case $type in
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fixed)
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local density=$(expr 72 \* $scale)x$(expr 72 \* $scale)
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magick convert -density "$density" -units PixelsPerInch "$icon" "$result"
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;;
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threshold)
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# Synthesize an icon of the exact size if a scalable icon is available
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# instead of scaling one and ending up with a fuzzy icon.
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if ! synthesizeIcon "${scalableIcon[0]}" "$result" "$iconSize" "$scale"; then
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resizeIcon "$icon" "$result" "$iconSize" "$scale"
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fi
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;;
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scalable)
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synthesizeIcon "${scalableIcon[0]}" "$result" "$iconSize" "$scale" || true
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;;
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esac
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done
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done
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echo "$resultdir"
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}
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iconsdir=$(getIcons "$sharePath" "apps/${iconName}" "$theme")
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if [[ ! -z "$(ls -1 "$iconsdir/"*)" ]]; then
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icnsutil compose "$out/${iconName}.icns" "$iconsdir/"*
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else
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echo "Warning: no icons were found. Creating an empty icon for ${iconName}.icns."
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touch "$out/${iconName}.icns"
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fi
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}
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# For a given .desktop file, generate a darwin '.app' bundle for it.
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convertDesktopFile() {
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local -r file="$1"
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local -r file=$1
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local -r sharePath=$(dirname "$(dirname "$file")")
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local -r name=$(getDesktopParam "${file}" "^Name")
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local -r exec=$(getDesktopParam "${file}" "Exec")
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local -r iconName=$(getDesktopParam "${file}" "Icon")
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local -r iconFiles=$(find "$out/share/icons/" -name "${iconName}.*" 2>/dev/null);
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local -r pixMaps=$(find "$out/share/pixmaps/" -name "${iconName}.xpm" 2>/dev/null);
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local -r iconName=$(getDesktopParam "${file}" "^Icon")
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local -r squircle=$(getDesktopParam "${file}" "X-macOS-SquircleIcon")
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mkdir -p "$out/Applications/${name}.app/Contents/MacOS"
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mkdir -p "$out/Applications/${name}.app/Contents/Resources"
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local i=0;
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for icon in $iconFiles; do
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ln -s "$icon" "$out/Applications/${name}.app/Contents/Resources/$i-$(basename "$icon")"
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(( i +=1 ));
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done
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convertIconTheme "$out/Applications/${name}.app/Contents/Resources" "$sharePath" "$iconName"
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for pixmap in $pixMaps; do
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local newIconName="$i-$(basename "$pixmap")";
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convert "$pixmap" "$out/Applications/${name}.app/Contents/Resources/${newIconName%.xpm}.png"
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(( i +=1 ));
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done
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write-darwin-bundle "$out" "$name" "$exec"
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write-darwin-bundle "$out" "$name" "$exec" "$iconName" "$squircle"
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}
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convertDesktopFiles() {
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@ -821,8 +821,9 @@ with pkgs;
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writeDarwinBundle = callPackage ../build-support/make-darwin-bundle/write-darwin-bundle.nix { };
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desktopToDarwinBundle = makeSetupHook { deps = [ writeDarwinBundle imagemagick ]; }
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../build-support/setup-hooks/desktop-to-darwin-bundle.sh;
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desktopToDarwinBundle = makeSetupHook {
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deps = [ writeDarwinBundle librsvg imagemagick python3Packages.icnsutil ];
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} ../build-support/setup-hooks/desktop-to-darwin-bundle.sh;
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keepBuildTree = makeSetupHook { } ../build-support/setup-hooks/keep-build-tree.sh;
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