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build_application_icons.sh

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  • build_application_icons.sh 3.37 KiB
    #! /bin/bash
    
    # Check dependencies
    command -v inkscape >/dev/null 2>&1 || { echo >&2 "I require inkscape but it's not installed. Aborting."; exit 1; }
    command -v scour >/dev/null 2>&1 || { echo >&2 "I require scour but it's not installed. Aborting."; exit 1; }
    command -v optipng >/dev/null 2>&1 || { echo >&2 "I require optipng but it's not installed. Aborting."; exit 1; }
    
    CURRENT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
    BASE_DIR="$(dirname "${CURRENT_DIR}")"
    
    SOURCE_ICON="${CURRENT_DIR}/icon.svg"
    SOURCE_FASTLANE="${CURRENT_DIR}/featureGraphic.svg"
    SOURCE_LAUNCH_IMAGE="${CURRENT_DIR}/icon.svg"
    
    OPTIPNG_OPTIONS="-preserve -quiet -o7"
    
    if [ ! -f "${SOURCE_ICON}" ]; then
      echo "Missing file: ${SOURCE_ICON}"
    fi
    
    if [ ! -f "${SOURCE_FASTLANE}" ]; then
      echo "Missing file: ${SOURCE_FASTLANE}"
    fi
    
    if [ ! -f "${SOURCE_LAUNCH_IMAGE}" ]; then
      echo "Missing file: ${SOURCE_LAUNCH_IMAGE}"
    fi
    
    function optimize_svg() {
      SVG="$1"
    
      cp ${SVG} ${SVG}.tmp
      scour \
          --remove-descriptive-elements \
          --enable-id-stripping \
          --enable-viewboxing \
          --enable-comment-stripping \
          --nindent=4 \
          --quiet \
          -i ${SVG}.tmp \
          -o ${SVG}
      rm ${SVG}.tmp
    }
    
    # optimize source svg files
    optimize_svg ${SOURCE_ICON}
    optimize_svg ${SOURCE_FASTLANE}
    optimize_svg ${SOURCE_LAUNCH_IMAGE}
    
    # build icons
    function build_application_icon() {
      ICON_SIZE="$1"
      TARGET="$2"
    
      echo "Building ${TARGET}"
    
      TARGET_PNG="${TARGET}.png"
    
      inkscape \
          --export-width=${ICON_SIZE} \
          --export-height=${ICON_SIZE} \
          --export-filename=${TARGET_PNG} \
          ${SOURCE_ICON}
    
      optipng ${OPTIPNG_OPTIONS} ${TARGET_PNG}
    }
    
    # build fastlane image
    function build_fastlane_image() {
      WIDTH="$1"
      HEIGHT="$2"
      TARGET="$3"
    
      echo "Building ${TARGET}"
    
      TARGET_PNG="${TARGET}.png"
    
      inkscape \
          --export-width=${WIDTH} \
          --export-height=${HEIGHT} \
          --export-filename=${TARGET_PNG} \
          ${SOURCE_FASTLANE}
    
      optipng ${OPTIPNG_OPTIONS} ${TARGET_PNG}
    }
    
    # build launch images (splash screen)
    function build_launch_image() {
      ICON_SIZE="$1"
      TARGET="$2"
    
      echo "Building ${TARGET}"
    
      TARGET_PNG="${TARGET}.png"
    
      inkscape \
          --export-width=${ICON_SIZE} \
          --export-height=${ICON_SIZE} \
          --export-filename=${TARGET_PNG} \
          ${SOURCE_LAUNCH_IMAGE}
    
      optipng ${OPTIPNG_OPTIONS} ${TARGET_PNG}
    }
    
    build_application_icon  72 ${BASE_DIR}/android/app/src/main/res/mipmap-hdpi/ic_launcher
    build_application_icon  48 ${BASE_DIR}/android/app/src/main/res/mipmap-mdpi/ic_launcher
    build_application_icon  96 ${BASE_DIR}/android/app/src/main/res/mipmap-xhdpi/ic_launcher
    build_application_icon 144 ${BASE_DIR}/android/app/src/main/res/mipmap-xxhdpi/ic_launcher
    build_application_icon 192 ${BASE_DIR}/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher
    build_application_icon 512 ${BASE_DIR}/fastlane/metadata/android/en-US/images/icon
    
    build_launch_image  72 ${BASE_DIR}/android/app/src/main/res/mipmap-hdpi/launch_image
    build_launch_image  48 ${BASE_DIR}/android/app/src/main/res/mipmap-mdpi/launch_image
    build_launch_image  96 ${BASE_DIR}/android/app/src/main/res/mipmap-xhdpi/launch_image
    build_launch_image 144 ${BASE_DIR}/android/app/src/main/res/mipmap-xxhdpi/launch_image
    build_launch_image 192 ${BASE_DIR}/android/app/src/main/res/mipmap-xxxhdpi/launch_image
    
    build_fastlane_image 1024 500 ${BASE_DIR}/fastlane/metadata/android/en-US/images/featureGraphic