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Last change
on this file since 7001 was 4939, checked in by xeen, 13 years ago |
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add shell script that compresses all PNGs
Requires ImageMagick and optipng to be installed and available in $PATH.
Works around bug which causes PNGs with 1-bit-alpha-channels to have an
opaque background (see #1576)
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-
Property svn:executable
set to
*
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File size:
443 bytes
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| 1 | #!/bin/sh
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| 2 |
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| 3 | for x in $(find images/ -name "*.png"); do
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| 4 | echo "Processing ${x}"
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| 5 | identify -quiet -verbose "${x}" | grep "alpha: 1-bit" > /dev/null
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| 6 | if [ "$?" -ne "0" ]; then
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| 7 | # non-1-bit-alpha image, process normally
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| 8 | optipng -o7 -quiet "${x}"
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| 9 | else
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| 10 | # disable color type reduction because that will break
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| 11 | # transparency for the images in JOSM using the current
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| 12 | # image loading method (see #1576)
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| 13 | optipng -nc -o7 -quiet "${x}"
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| 14 | fi
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| 15 | done
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