I would like to programmatically “compose” and save as PNG an image with a white background and a digit in the center, of a given font, colour, size.
Which approach may I have? I am thinking to plots, but it seems “exaggerated” for what I need…
Seems that Luxor does exactly this: http://juliagraphics.github.io/Luxor.jl/stable/examples/
I’ll give it a try …
1 Like
compose.jl can do it too: Forms · Compose.jl
In Luxor I have problems to center the text string: How to center a text with Luxor - #2 by cormullion
So I went back to Compose, but not speaking Lisp, it looks very scaring.
I have tried this, but the text doesn’t go on top of the rectangle:
using Colors, Compose
set_default_graphic_size(300px,300px)
img = compose(context(units=UnitBox(0,0,2,2)),
compose(compose(context(), rectangle()), fill("white")),
(context(), text(1, 1, "123", hcenter, vcenter), stroke("red"), fontsize(30pt)),
)
ok, got it with:
using Colors, Compose
set_default_graphic_size(300px,300px)
img = compose(context(units=UnitBox(0,0,2,2)),
(context(), text(1, 1, "123", hcenter, vcenter), stroke("black"), fontsize(160pt)),
compose(compose(context(), rectangle()), fill("white")),
)
Still I can’t change the font with Compose… font("Helvetica-Oblique") or font("CMU-Sans-Serif-Medium") seems not to have any effect.
Also, the exported PNG looks different than the preview in Juno.
EDIT: good about the last point… for some reasons the preview always display a serif font, but the PNG exported with img |> PNG("hello-world4.png") always draws with a sans-serif font that is what I want…
