Controlling line height...

[mattias]

I use caption to generate word wrapped labels. Is there any way to control the lineheight of the text generated?

/mattias

[anthony]

That is called 'pointsize'. Sorry but that is actually what pointsize really means!

[mattias]

Yes - but if I would like it to be a value else then the standard for a given pointsize. Can that be done?

[anthony]

Not without further processing. I'm not certain if the freetype renderer actually has an option for 'line spacing', if it does christy may be happy to add a new setting option. If not well you will have to DIY

DIY can come in two forms...

1. You can generate each line yourself and append or 'splice' in extra space at the top or bottom of each line. or position the lines on a larger virtual canvas (see IM examples "layers")
2. Or you can use caption: to do all the word wrapping of the text, then use the IM examples script 'divide_vert' to split the image into a list of images and 'gaps'. You can then splice in extra space into the gap images, and append the image list together again.

   Code: Select all

   convert -size 200x -pointsize 20 caption:"This is a word wrapped line that is very very long" miff:- | divide_vert - miff:- | convert - -splice 0x2 -append expanded_caption.png

   Other options to divide_vert is to junk the gap images, though I wouldn't do that as the 'gaps' can be variable.
   
   ASIDE: this script was a proof of concept for a posible new option to IM to help split up and divide images into seperate parts based on either the input image, or that image and a mask showing the separate objects. Shame I have too many things to do, to implement it myself!

[mattias]

Ok - I understand. Thanks again.