Show Kerning Pairs.py

Show Kerning Pairs.py

#MenuTitle: Show Kerning Pairs
# -*- coding: utf-8 -*-
__doc__="""
Show Kerning Pairs for this glyph in a new tab.
"""
import GlyphsApp
import traceback

thisFont = Glyphs.font
Doc = Glyphs.currentDocument
selectedLayers = thisFont.selectedLayers
selectedMaster = thisFont.selectedFontMaster
masterID = selectedMaster.id

leftGroups = {}
rightGroups = {}
for g in thisFont.glyphs:
	if g.rightKerningGroup:
		group_name = g.rightKerningGroupId()
		try:
			leftGroups[group_name].append(g.name)
		except:
			leftGroups[group_name] = [g.name]

	if g.leftKerningGroup:
		group_name = g.leftKerningGroupId()
		try:
			rightGroups[group_name].append(g.name)
		except:
			rightGroups[group_name] = [g.name]

def nameMaker(kernGlyphOrGroup, side):
	# if this is a kerning group
	if kernGlyphOrGroup[0] == "@":
		# right glyph, left kerning group
		if side == "right":
			try:
				# return rightGroups[kernGlyphOrGroup][0]
				return sorted(rightGroups[kernGlyphOrGroup], key=len)[0]
			except:
				pass
		elif side == "left":
			# left glyph, right kerning group
			try:
				# return leftGroups[kernGlyphOrGroup][0]
				return sorted(leftGroups[kernGlyphOrGroup], key=len)[0]
			except:
				pass
	else:
		return thisFont.glyphForId_(kernGlyphOrGroup).name

editString = u""""""
editStringL = u""""""
editStringR = u""""""

for thisLayer in selectedLayers:
	thisGlyph = thisLayer.parent
	thisGlyphName = thisGlyph.name
	rGroupName = str(thisGlyph.rightKerningGroup)
	lGroupName = str(thisGlyph.leftKerningGroup)

	# print "\t", rGroupName, lGroupName

	kernPairListL = []
	kernPairListSortedL = []
	kernPairListR = []
	kernPairListSortedR = []

	for L in thisFont.kerning[ masterID ].keys():
		try:
			# if the this kerning-pair's left glyph matches rGroupName (right side kerning group of thisGlyph)
			if rGroupName == L[7:] or rGroupName == thisFont.glyphForId_(L).name or thisFont.glyphForId_(L).name == thisGlyph.name:
				# for every R counterpart to L in the kerning pairs of rGroupName
				for R in thisFont.kerning[masterID][L].keys():
					if thisFont.kerning[masterID][L][R] != 0:
						kernPairListL += [nameMaker(R, "right")]
		except:
			# print traceback.format_exc()
			pass

		for R in thisFont.kerning[masterID][L].keys():
			try:
				# if the R counterpart (class glyph) of L glyph is the selectedGlyph
				if lGroupName == R[7:] or lGroupName == thisFont.glyphForId_(R).name or thisFont.glyphForId_(R).name == thisGlyph.name:
					if thisFont.kerning[masterID][L][R] != 0:
						kernPairListR += [nameMaker(L, "left")]
			except:
				pass

	kernPairListSortedL = [g.name for g in Font.glyphs if g.name in kernPairListL]
	for everyGlyph in kernPairListSortedL:
		editStringL += "/%s/%s  " % (thisGlyphName, everyGlyph)

	kernPairListSortedR = [g.name for g in Font.glyphs if g.name in kernPairListR]
	for everyGlyph in kernPairListSortedR:
		editStringR += "/%s/%s  " % (everyGlyph, thisGlyphName)

editString = editStringL + "\n\n" + editStringR

thisFont.newTab(editString)