Legacy ImageMagick Discussions Archive

Hey guys,

I have a problem. I'm trying to create a picture using a user's text and font size. Unfortunately, I don't know the font size, font type and text length before creating a picture.
So I have to predefine somehow "-size" and "option:distort:viewport" options. But how? How to determine the width and height of the image I will need for this picture?
For example, I have text "I love you", font "Aactionman" and font size 50. What's next? I don't want to create a very big image since "-trim" option for some reason doesn't trim animations. If I would know the width and height of each letter in a font I would calculate image dimensions, but I don't know...

If you have the text, font and pointsize, then just do the following, (I don't have Aactionman font so you can use yours -- I just used Arial)

convert -background white -fill black -font Arial -pointsize 50 label:"I love you" -trim +repage result.gif

I use the following code: (where animation.gif -- any gif animation)

As you can see the STROKE is blinking. If I delete "+repage" option everything is okay but image is not trimmed.

Could you please help me to create trimmed animation without using "-size" and "viewport" options?

I would also appreciate if you help me to optimize this query. I assume third step can be combined with the first one but I don't know how to do it. I tried many variations with no success.

More information about the text geometry used during the annotation of text can be gathered.

See IM Examples, Text to Image Handling, Determining Font Metrics
http://www.imagemagick.org/Usage/text/#font_info

Okay, but how to solve the bug I mentioned above? I mean stroke blinking.

I solved the issue by using "-draw" instead of "label".

label: creates an image. Blinking means you created a GIF animation.

Instead of -draw, you can use -annotate.

For more examples see
Automatically Sized Annotated Text Canvases
http://www.imagemagick.org/Usage/text/#annotate_size

This goes on to adding color and even gradients to the text image.