Wrong size and background color since 6.8.9.7

[jpalacios]

Since version 6.8.9.7 using convert with the background option set to 'none' render some svg images with a white background instead of a transparent one. It also renders the images in an incorrect size.

The following commands were used to generate the images:
convert -background none test1.svg test1.png
convert -background none test2.svg test2.png

Results:
- Attached test1.svg renders an image with wrong size and white background (see test1_FAIL.png). The size must be 100x100 and his background must be transparent.
- Attached test2.svg renders an image with wrong size and transparent background (see test2_FAIL.png). The size must be 40x40.

The attached test1_OK.png and test2_OK.png was generated using imagemagick-6.8.9.6 and shows a correct behavior.
The svg files were generated using inkscape 0.48.5.
Grab all files from here: https://dl.dropboxusercontent.com/u/669 ... les.tar.gz

[snibgo]

For the two IM versions, try the commands with "verbose". This shows the Inkscape command. Look out for --export-background-opacity="1" or "0". It should be "0" for -background None.

[glennrp]

Results with 6.8.9-9 (using rsvg-convert) seem to be OK:

• glenn.rp> q16convert -background none test1.svg test1_im.png
  glenn.rp> q16convert -background none test2.svg test2_im.png
  glenn.rp> pngcheck *im.png
  OK: test1_im.png (100x100, 32-bit grayscale+alpha, non-interlaced, 93.9%).
  OK: test2_im.png (40x40, 64-bit RGB+alpha, non-interlaced, 67.4%).
  No errors were detected in 2 of the 2 files tested.
  glenn.rp> q16convert | head -1
  Version: ImageMagick 6.8.9-9 Q16 x86_64 2014-10-26 http://www.imagemagick.org

Both images have transparency where it's expected.

[jpalacios]

Using verbose with both versions:
6.8.9.6

Code: Select all

convert -verbose -background none test1.svg test1.png
"inkscape" "test1.svg" --export-png="/tmp/magick-1204IZfbeBPvSulT" --export-dpi="90,90" --export-background="rgb(0%,0%,0%)" --export-background-opacity="0" > "/tmp/magick-1204okobh0rx9eOM" 2>&1
/tmp/magick-1204IZfbeBPvSulT PNG 100x100 100x100+0+0 8-bit sRGB 5.42KB 0.000u 0:00.009
test1.svg=>/tmp/magick-1204IZfbeBPvSulT SVG 100x100 100x100+0+0 8-bit sRGB 5.42KB 0.000u 0:00.000
test1.svg=>test1.png SVG 100x100 100x100+0+0 8-bit sRGB 5.57KB 0.010u 0:00.000

6.8.9.9

Code: Select all

convert -verbose -background none test1.svg test1.png
"inkscape" "test1.svg" --export-eps="/tmp/magick-1292uxKtNd5gACoK" --export-dpi="90,90" --export-background="rgb(0%,0%,0%)" --export-background-opacity="0" > "/tmp/magick-1292S8hsier5WIL1" 2>&1
/tmp/magick-1292TzkWl1BxYFkW1 PNG 83x84 83x84+0+0 8-bit sRGB 3.41KB 0.000u 0:00.000
/tmp/magick-1292uxKtNd5gACoK PNG 83x84 83x84+0+0 16-bit sRGB 3.41KB 0.000u 0:00.000
test1.svg=>/tmp/magick-1292uxKtNd5gACoK PNG 83x84 83x84+0+0 16-bit sRGB 3.41KB 0.000u 0:00.000
test1.svg=>test1.png PNG 83x84 83x84+0+0 8-bit sRGB 3.62KB 0.000u 0:00.000
[ghostscript library] -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r72x72" -g83x84  "-sOutputFile=/tmp/magick-1292TzkWl1BxYFkW%d" "-f/tmp/magick-12928N4VAEfByutD" "-f/tmp/magick-1292PRSOIIDHdkCk"%

By the way, i forgot to write the OS name: Archlinux

[snibgo]

The --export-background looks good. But I see that 6.8.9.9 has --export-eps instead of --export-png. Perhaps that is the problem, especially as IM needs to call Ghostscript to convert the EPS to PNG. Yeuch!

[jpalacios]

Update:
In version 6.9.0.0 the size and the background of the resulting image are correct, but the layers of the svg are misaligned in the rendered png.
Convert is still using --export-eps instead of --export-png in this version.

[magick]

Grab ImageMagick-6.9.0-1 Beta. It has a SVG patch that should fix the problem you reported.

[jpalacios]

I tested it in version 6.9.0.2. Unfortunately, this bug is alive.
Convert still uses --export-eps instead of --export-png, rendering the resulting image with wrong size and background color.

Output from 6.9.0.2:

Code: Select all

convert -verbose -background "none" test1.svg test1.png                    
"inkscape" "/tmp/magick-4488r6IF_swLRpFh" --export-eps="/tmp/magick-4488wH27d8QHgzqp" --export-dpi="90,90" --export-background="rgb(0%,0%,0%)" --export-background-opacity="0" > "/tmp/magick-4488Skdc77Kc2Ibx" 2>&1
/tmp/magick-4488JUxiOO8L6u1W1 PNG 83x84 83x84+0+0 8-bit sRGB 3.29KB 0.000u 0:00.000
/tmp/magick-4488wH27d8QHgzqp PS 83x84 83x84+0+0 16-bit sRGB 3.29KB 0.000u 0:00.000
test1.svg=>/tmp/magick-4488wH27d8QHgzqp PS 83x84 83x84+0+0 16-bit sRGB 3.29KB 0.000u 0:00.000
test1.svg=>test1.png PS 83x84 83x84+0+0 8-bit sRGB 3.49KB 0.000u 0:00.000
[ghostscript library] -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r72x72" -g83x84  "-sOutputFile=/tmp/magick-4488JUxiOO8L6u1W%d" "-f/tmp/magick-4488YnadJMlBltpO" "-f/tmp/magick-4488OPPQB4uU8rNF"%

[jpalacios]

Fixed in version 6.9.0.3
Thank you!

Output:

Code: Select all

convert -verbose -background "none" test1.svg test1.png
"inkscape" "/tmp/magick-59476nv1iMC6lWFi" --export-png="/tmp/magick-5947MbhGD8hgq4fy" --export-dpi="90,90" --export-background="rgb(0%,0%,0%)" --export-background-opacity="0" > "/tmp/magick-5947v0b06Ti0LcQN" 2>&1
/tmp/magick-5947MbhGD8hgq4fy PNG 100x100 100x100+0+0 8-bit sRGB 4.71KB 0.000u 0:00.000
test1.svg=>/tmp/magick-5947MbhGD8hgq4fy PNG 100x100 100x100+0+0 8-bit sRGB 4.71KB 0.000u 0:00.000
test1.svg=>test1.png PNG 100x100 100x100+0+0 8-bit sRGB 4.87KB 0.000u 0:00.000