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Add script to create icns files. (#7456)

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Add script to generate macOS icon file. It does not attempt to integrate with the current build process as the macOS icon file is mostly static.

`libsvg` was chosen because of its low dependency count over other solutions that use backends like Chromium, PhontomJS, etc. ImageMagick's `convert` was tested but resulting PNGs where not satisfactory and would have required an overcomplicated script having to calculate the `density` argument.

* Has a dependency on librsvg (can be installed via Brew)
* Uses SVG file as input
* Can be integrated in later to build process if desired

Closes #7455
This commit is contained in:
Greg Zimmerman 2019-01-02 15:11:47 -05:00 committed by Travis Plunk
parent 725bfdaf88
commit 2a1b6ed9fe
1 changed files with 75 additions and 0 deletions
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75
tools/generate-icns.sh Executable file
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#!/usr/bin/env bash
lowercase(){
echo "$1" | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"
}
display_usage() {
echo
echo " Usage: ./$(basename $0) svgfilename icnsfilename"
echo
}
# Verify two arguments are passed.
if [ $# != 2 ];then
display_usage
exit 1
fi
# Verify input SVG exists.
if [ ! -f $1 ]; then
echo "SVG file not found."
display_usage
exit 1
fi
# Verifiying OS as iconutil is needed."
if [ $(lowercase $(uname)) != "darwin" ]; then
echo "Unsupported platform. Please run under macOS."
exit 1
fi
# Verify librsvg is installed.
if ! hash rsvg-convert 2>/dev/null; then
echo "librsvg is not installed."
exit 1
fi
# Create temporary folder for iconset.
guid=$(uuidgen)
if ! mkdir $guid.iconset >/dev/null 2>&1; then
echo "Error creating temporary iconset folder."
exit 1
fi
# Generate images for iconset.
rsvg-convert -f png -w 16 -h 16 -o $guid.iconset/icon_16x16.png $1
rsvg-convert -f png -w 32 -h 32 -o $guid.iconset/icon_16x16@2x.png $1
rsvg-convert -f png -w 32 -h 32 -o $guid.iconset/icon_32x32.png $1
rsvg-convert -f png -w 64 -h 64 -o $guid.iconset/icon_32x32@2x.png $1
rsvg-convert -f png -w 128 -h 128 -o $guid.iconset/icon_128x128.png $1
rsvg-convert -f png -w 256 -h 256 -o $guid.iconset/icon_128x128@2x.png $1
rsvg-convert -f png -w 256 -h 256 -o $guid.iconset/icon_256x256.png $1
rsvg-convert -f png -w 512 -h 512 -o $guid.iconset/icon_256x256@2x.png $1
rsvg-convert -f png -w 512 -h 512 -o $guid.iconset/icon_512x512.png $1
rsvg-convert -f png -w 1024 -h 1024 -o $guid.iconset/icon_512x512@2x.png $1
# Convert iconset to icns.
if ! iconutil -c icns $guid.iconset >/dev/null 2>&1; then
echo "Error converting iconset to icns."
exit 1
fi
# Remove temporary folder.
if ! rm -rf $guid.iconset >/dev/null 2>&1; then
echo "Error removing temporary iconset folder."
exit 1
fi
# Rename/Move icns file.
if ! mv $guid.icns $2 >/dev/null 2>&1; then
echo "Error moving icns file."
exit 1
fi
exit 0