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create image with support for white interior

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This commit is contained in:
Mario Fetka 2012-02-14 15:13:53 +01:00
parent 9e12881932
commit 3df8e2c106
1 changed files with 29 additions and 8 deletions
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37
lib/builder-utils.sh
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@ -134,35 +134,56 @@ convert_image() {
local wight=`${CMD_identify} -format "%w" $src`
${CMD_identify} -format "%wx%h" $src
# create a diffence image from the source
convert $src \( +clone -fx 'p{0,0}' \) -compose Difference -composite \
-modulate 100,0 +matte $OUTPUT_DIR/difference.png
# remove the black, replace with transparency
convert $OUTPUT_DIR/difference.png -bordercolor white -border 1x1 -matte \
-fill none -fuzz 7% -draw 'matte 1,1 floodfill' -shave 1x1 \
$OUTPUT_DIR/removed_black.png
# create the matte
convert $OUTPUT_DIR/removed_black.png -channel matte -separate +matte \
$OUTPUT_DIR/matte.png
# negate the colors
convert $OUTPUT_DIR/matte.png -negate -blur 0x1 \
$OUTPUT_DIR/matte-negated.png
# you are going for: white interior, black exterior
composite -compose CopyOpacity $OUTPUT_DIR/matte-negated.png $src \
$OUTPUT_DIR/final.png
if [ $wight -lt $hight ] ; then
# Its higher so force x160 and let imagemagic decide the right wight
# then add transparency to the rest of the image to fit 160x160
log_debug "Icon Wight: $wight < Hight: $hight"
convert $src -colorspace RGB -transparent white -background transparent \
-resize x160 -size 160x160 xc:transparent +swap -gravity center \
convert $OUTPUT_DIR/final.png -colorspace RGB -resize x160 \
-size 160x160 xc:transparent +swap -gravity center \
-composite -modulate 110 -colors 256 png8:$dst
builder_check_error "converting image"
elif [ $wight -gt $hight ] ; then
# Its wider so force 160x and let imagemagic decide the right hight
# then add transparency to the rest of the image to fit 160x160
log_debug "Icon Wight: $wight > Hight: $hight"
convert $src -colorspace RGB -transparent white -background transparent \
-resize 160x -size 160x160 xc:transparent +swap -gravity center \
convert $OUTPUT_DIR/final.png -colorspace RGB -resize 160x \
-size 160x160 xc:transparent +swap -gravity center \
-composite -modulate 110 -colors 256 png8:$dst
builder_check_error "converting image"
elif [ $wight -eq $hight ] ; then
# Its scare so force 160x160
log_debug "Icon Wight: $wight = Hight: $hight"
convert $src -colorspace RGB -transparent white -background transparent \
-resize 160x160 -size 160x160 xc:transparent +swap -gravity center \
convert $OUTPUT_DIR/final.png -colorspace RGB -resize 160x160 \
-size 160x160 xc:transparent +swap -gravity center \
-composite -modulate 110 -colors 256 png8:$dst
builder_check_error "converting image"
else
# Imagemagic is unable to detect the aspect ratio so just force 160x160
# this could result in streched images
log_debug "Icon Wight: $wight unknown Hight: $hight"
convert $src -colorspace RGB -transparent white -background transparent \
-resize 160x160 xc:transparent +swap -gravity center -composite \
convert $OUTPUT_DIR/final.png -colorspace RGB -resize 160x160 \
xc:transparent +swap -gravity center -composite \
-modulate 110 -colors 256 png8:$dst
builder_check_error "converting image"
fi