feat: Compression script with compressed images

Also modified genicons.sh

Signed-off-by: txtsd <code@ihavea.quest>

program_info/genicons.sh

@@ -9,16 +9,7 @@ svg2png() {
     inkscape -w "$width" -h "$height" -o "$output_file" "$input_file"
 }
 
-sipsresize() {
+if command -v "inkscape" && command -v "icotool" && command -v "oxipng"; then
-    input_file="$1"
-    output_file="$2"
-    width="$3"
-    height="$4"
-
-    sips -z "$width" "$height" "$input_file" --out "$output_file"
-}
-
-if command -v "inkscape" && command -v "icotool"; then
     # Windows ICO
     d=$(mktemp -d)
 
@@ -30,6 +21,8 @@ if command -v "inkscape" && command -v "icotool"; then
     svg2png org.prismlauncher.PrismLauncher.svg "$d/prismlauncher_128.png" 128 128
     svg2png org.prismlauncher.PrismLauncher.svg "$d/prismlauncher_256.png" 256 256
 
+    oxipng --opt max --strip all --alpha --interlace 0 "$d/prismlauncher_"*".png"
+
     rm prismlauncher.ico && icotool -o prismlauncher.ico -c \
         "$d/prismlauncher_256.png"  \
         "$d/prismlauncher_128.png"  \
@@ -40,10 +33,10 @@ if command -v "inkscape" && command -v "icotool"; then
         "$d/prismlauncher_16.png"
 else
     echo "ERROR: Windows icons were NOT generated!" >&2
-    echo "ERROR: requires inkscape and icotool in PATH"
+    echo "ERROR: requires inkscape, icotool and oxipng in PATH"
 fi
 
-if command -v "inkscape" && command -v "sips" && command -v "iconutil"; then
+if command -v "inkscape" && command -v "iconutil" && command -v "oxipng"; then
     # macOS ICNS
     d=$(mktemp -d)
 
@@ -51,19 +44,22 @@ if command -v "inkscape" && command -v "sips" && command -v "iconutil"; then
 
     mkdir -p "$d"
 
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_16x16.png" 16 16
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_16x16@2.png" 32 32
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_32x32.png" 32 32
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_32x32@2.png" 64 64
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_128x128.png" 128 128
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_128x128@2.png" 256 256
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_256x256.png" 256 256
+    svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_256x256@2.png" 512 512
     svg2png org.prismlauncher.PrismLauncher.bigsur.svg "$d/icon_512x512@2x.png" 1024 1024
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_16x16.png" 16 16
+
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_16x16@2.png" 32 32
+    oxipng --opt max --strip all --alpha --interlace 0 "$d/icon_"*".png"
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_32x32.png" 32 32
+
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_32x32@2.png" 64 64
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_128x128.png" 128 128
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_128x128@2.png" 256 256
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_256x256.png" 256 256
-    sipsresize "$d/icon_512x512@2.png" "$d/icon_256x256@2.png" 512 512
     iconutil -c icns "$d"
 else
     echo "ERROR: macOS icons were NOT generated!" >&2
-    echo "ERROR: requires inkscape, sips and iconutil in PATH"
+    echo "ERROR: requires inkscape, iconutil and oxipng in PATH"
 fi
 
 # replace icon in themes

scripts/compress_images.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+## If current working dirctory is ./scripts, ask to invoke from one directory up
+if [ ! -d "scripts" ]; then
+	echo "Please run this script from the root directory of the project"
+	exit 1
+fi
+
+find . -type f -name '*.png' -not -path '*/libraries/*' -exec oxipng --opt max --strip all --alpha --interlace 0 {} \;