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Add density flag

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This makes small images when the image size is too large for the screen.
It also runs much faster when images are large.
This commit is contained in:
eyal0
2020-06-22 17:08:43 -06:00
parent 460c46bc96
commit 67a9dd23bd
1 changed files with 39 additions and 2 deletions
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diff-image
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@ -190,14 +190,51 @@ then
fuzz_flag="-fuzz $fuzz%"
fi
density_flag=
do_compare()
{
compare $color_flag $fuzz_flag $backgroundcolor_flag "$f1" "$f2" png:- | \
montage -geometry +4+4 $backgroundcolor_flag "$f1" - "$f2" png:- >"$destfile" 2>/dev/null || true
compare $density_flag $color_flag $fuzz_flag $backgroundcolor_flag "$f1" "$f2" png:- | \
montage $density_flag -geometry +4+4 $backgroundcolor_flag "$f1" - "$f2" png:- >"$destfile" 2>/dev/null || true
}
if which xdg-open > /dev/null
then
# Get width and height of each input image.
f1_width="$(exiftool -S -ImageWidth $f1 | cut -d' ' -f2)"
f2_width="$(exiftool -S -ImageWidth $f2 | cut -d' ' -f2)"
f1_height="$(exiftool -S -ImageHeight $f1 | cut -d' ' -f2)"
f2_height="$(exiftool -S -ImageHeight $f2 | cut -d' ' -f2)"
# find the max of each.
if (( $(echo "$f1_width > $f2_width" |bc -l) )); then
max_file_width=$f1_width
else
max_file_width=$f2_width
fi
if (( $(echo "$f1_height > $f2_height" |bc -l) )); then
max_file_height=$f1_height
else
max_file_height=$f2_height
fi
screen_width="$(xdpyinfo | grep dimensions | sed -e 's/.* \([^ ]*\)x\([^ ]*\) pixels.*/\1/')"
screen_height="$(xdpyinfo | grep dimensions | sed -e 's/.* \([^ ]*\)x\([^ ]*\) pixels.*/\2/')"
resolution_width="$(xdpyinfo | grep resolution | sed -e 's/.* \([^ ]*\)x\([^ ]*\) dots per inch.*/\1/')"
resolution_height="$(xdpyinfo | grep resolution | sed -e 's/.* \([^ ]*\)x\([^ ]*\) dots per inch.*/\2/')"
# Assume that the combined size will be the same as the maximum of
# each. Add 100 pixels on each side for the window borders.
montage_width=$( echo "$f1_width + $max_file_width + $f2_width + 100" |bc -l )
montage_height=$( echo "$f1_height + $max_file_height + $f2_height + 100" |bc -l )
# Select the most limiting (lowest) density.
if (( $(echo "($resolution_width / $montage_width * $screen_width) < ($resolution_height / $montage_height * $screen_height)" |bc -l) )); then
density=$( echo "$resolution_width / $montage_width * $screen_width" |bc -l )
else
density=$( echo "$resolution_height / $montage_height * $screen_height" |bc -l )
fi
# If the density needed is less than either of the inputs, use it.
if (( $(echo "$density < $resolution_width || $density < $resolution_height" |bc -l) )); then
density_flag="-density $density"
fi
do_compare
xdg-open "$destfile"
else