Barcode height

[nicknomo]

Would it possible to adjust the relative height of the barcode lines? Any pointers on how? I'd really like to generate barcodes that look more proportional to a UPC code. I can to fork this to make changes, just not sure where to start.

[graphicore]

Forking would certainly be the quickest way. You should start looking at https://github.com/graphicore/librebarcode/blob/master/app/bin/buildAll and modify values around here:

librebarcode/app/bin/buildAll

Lines 73 to 79 in f9864c4

	if isTarget "$TARGET"; then
	local UNITS_PER_EM=1000
	local ASCENDER=600
	local DESCENDER=-400
	local X_HEIGHT=400
	local CAP_HEIGHT=590

Also, ideally, especially if you are going to release change these to something else:

    local FAMILY_BASE_NAME="Libre Barcode"
    local FILE_BASENAME="LibreBarcode"
    local VENDOR_ID="GRCR"
# and add to
    local COPYRIGHT="Copyright 2017-2020 The $FAMILY_BASE_NAME Project Authors (https://github.com/graphicore/librebarcode)"

To avoid confusion, both of users and of the Operating System font menus.

At some point in the future I'll add variable font tables to these fonts, height could be a slider in the fonts and static instances could be made from those automatically. But it won't happen too soon.

[graphicore]

Labeled as enhancement, as a reminder of the variable font idea.

[wajeemba]

I totally agree with nicknomo. Would absolutely love a way to adjust the height of the Code 39 text in particular!