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textgen: Add kerning rules for new font.

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These rules provide special cases that adjust the spacing between
certain pairs of characters so that they fit together better.
This commit is contained in:
Simon Howard 2014-06-29 22:54:02 +00:00
parent 07a1a5d71f
commit c06cb4478c
2 changed files with 51 additions and 28 deletions
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65
graphics/text/config.py
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@ -41,35 +41,44 @@ import re
# and if the font is changed this probably needs to be redone.
FONT_KERNING_RULES = {
# TODO: Devise some new rules for the new font.
# Right character fits under left character:
r'[TY][07ACOSZ]': -2,
r'P[A]': -3,
r'P[7]': -2,
r'P[Z]': -1,
r'7[Z]': -1,
r'[0OQ]A': -1,
r'S[A]': -1,
r'V[0OC]': -2,
# # Right character fits under left character:
# r'p[aj\.]': -3,
# r'P[a\.]': -4,
# r'[PVW][AJj\.]': -4,
# r't[ajJ\.]': -4,
# r'f[aj\.]': -2,
#
# # Some capital letters have overhangs that the 'lower case'
# # characters can fit under:
# r'C[Ja-z\.]': -2,
# r'F[Ja-z\.]': -3,
# r'T[Ja-z\.]': -5,
# r'W[Ja-z\.]': -2,
# r'S[Ja-z\.]': -1,
# r'V[a-z\.]': -3,
#
# # Left character fits under right character:
# r'[alAL][ty479]': -3,
# r'a[vwVW]': -2,
# r'A[VW]': -3,
# r'A[vw]': -2,
# r'r[ty479]': -2,
# r'[vwVW][Aa]': -2,
# r'[Yypv][jJ]': -2,
#
# # Extra space needed:
# r'[OUu][Pp]': +1,
# Left character fits under right character:
r'L[TY]': -4,
r'L[014COQV]': -3,
r'L[O09]': -2,
r'[0O][4TY]': -2,
r'[0O][1]': -1,
r'Q[1T]': -2,
r'Q[Y]': -1,
r'A[TYV]': -2,
r'A[GC]': -1,
# Fits into "hole" in left character:
r'[BCX8][0CGOQ]': -2,
r'Z[0CO]': -2,
r'Z[GQ]': -1,
r'I[0COQ]': -1,
r'K[0CO]': -4,
r'K[GQ]': -3,
r'K[E]': -1,
r'[PR][0COQ]': -1,
# Fits into "hole" in right character:
r'[O0Q][X]': -3,
r'[O0Q][28]': -2,
r'[O0Q][9IK]': -1,
# Just because.
r'[O0][O0]': -1,
}
white_graphics = {

14
graphics/text/textgen
View file

@ -241,8 +241,22 @@ def generate_graphics(graphics, color=COLOR_WHITE):
print("# %s.gif: '%s'" % (name, text))
font.render_text(text, '%s.gif' % name, color=color)
def generate_kerning_test():
pairs = []
for c1 in sorted(font.char_widths):
char1 = "%c" % c1
for c2 in sorted(font.char_widths):
char2 = "%c" % c2
if font.kerning_adjust(char1, char2) != 0:
pairs.append(char1 + char2)
font.render_text(" ".join(pairs), "kerning.gif")
font = Font('fontchars', kerning_table=FONT_KERNING_RULES)
# Enable to generate test image file for tweaking kerning values:
#generate_kerning_test()
generate_graphics(red_graphics, COLOR_RED)
generate_graphics(blue_graphics, COLOR_BLUE)
generate_graphics(white_graphics, COLOR_WHITE)