Text does not wrap correctly

[arthur]

Hello,

I'm reposting this here since I think it's a bug and not an error on my side.
Can a mod close this duplicate topic viewtopic.php?f=1&t=30375 ?

I am having some issue trying to wrap text in a given width and pointsize.
Here is what I run:

Code: Select all

convert -size 400x -pointsize 50 caption:'This does not wrap' out.png

And this is what I get:


I would expect "wrap" to be on a new line.

I get this result with imagemagick 6.9.5 on OSX and imagemagick 6.7.7 on Ubuntu
Probably same issue http://stackoverflow.com/questions/1158 ... -font-size

Thank you for your help
Arthur

[snibgo]

I agree it seems to be a bug.

I won't remove the other topic as it contains information that might be useful. I would merge the topics but when I try clever things like that I end up deleting the universe.

[fmw42]

I can repeat it on IM 6.9.5.7 Q16 Mac OSX Snow Leopard. It would seem to be a bug.

But note that if you really do not want the text to wrap, you should use label:. That works fine for the same command.

[arthur]

Thank you for your responses. I will try to look around in the code to see I understand anything…

For the label: option, I really do want the text to wrap I have a fixed pointsize and width and a variable height.

[fmw42]

For the label: option, I really do want the text to wrap I have a fixed pointsize and width and a variable height.

Understood. I was just checking to be sure.

I note that you did not specify a font and took the system default font which on Mac is Arial, I believe. Does it fail for other fonts?

I think the IM developers will need to look into this.

[GeeMack]

I note that you did not specify a font and took the system default font which on Mac is Arial, I believe. Does it fail for other fonts?

I tested this with a few different fonts running IM7 on Windows 10 64. For example, using this command...

Code: Select all

magick ^
   -fill black ^
   -background white ^
   -font myriad-web-pro ^
   ( -pointsize 15 -size 100x caption:"This does not wrap" ) ^
   ( -pointsize 30 -size 200x caption:"This does not wrap" ) ^
   ( -pointsize 40 -size 300x caption:"This does not wrap" ) ^
   ( -pointsize 45 -size 300x caption:"This does not wrap" ) ^
   ( -pointsize 46 -size 300x caption:"This does not wrap" ) ^
   ( -pointsize 48 -size 300x caption:"This does not wrap" ) ^
   ( -pointsize 48 -size 320x caption:"This does not wrap" ) ^
   ( -pointsize 49 -size 350x caption:"This does not wrap" ) ^
   ( -pointsize 50 -size 350x caption:"This does not wrap" ) ^
   ( -pointsize 50 -size 400x caption:"This does not wrap" ) ^
   ( -pointsize 55 -size 450x caption:"This does not wrap" ) ^
   ( -pointsize 60 -size 450x caption:"This does not wrap" ) ^
   -bordercolor black ^
   -border 2x2 ^
   -bordercolor white ^
   -border 10x10 ^
   -append ^
   -shave 10x10 ^
   -border 20x20 ^
      caption_myriad-web-pro.png

... I get this as the output image...



The error seems to be hit and miss and occurs either with the default font or any specified font. It happens with no "-gravity" setting or with a setting like "-gravity center". It appears to be making the wrapping decision using a fairly narrow combination of pointsize and width, so sometimes it doesn't look like a problem, but changing one factor by just a bit can make it happen.

[arthur]

I think I found the issue, I have submitted a pull request to the Github clone https://github.com/ImageMagick/ImageMagick/pull/260
Can a dev let me know if this should be submitted elsewhere?

[dlemstra]

Thanks for the patch and that is the correct place. Will take a look at it tonight.