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This fixes a issue in importing ps zone information. I missed a bug in FL and fixed it in the wrong place.

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The FL attribute font.blue_values_num can't be set to the highest number required to store 7 zones. Adam was asked about t his in september 2008, but didn't answer. 
While this can't fix the FL bug, it can properly import all values up to the last one. A warning is printed when the last value is dropped.

git-svn-id: http://svn.robofab.com/trunk@163 b5fa9d6c-a76f-4ffd-b3cb-f825fc41095c
This commit is contained in:
Erik van Blokland 2009-02-17 08:43:08 +00:00
parent 65b2d92a9f
commit 1eb53b404e
1 changed files with 51 additions and 17 deletions
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68
Lib/robofab/objects/objectsFL.py
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@ -105,6 +105,9 @@ _flGenerateTypes ={ PC_TYPE1 : (ftTYPE1, 'pfb'), # PC Type 1 font (binary/PF
stem_snap_h
stem_snap_v_num(integer)
stem_snap_v
"""
class PostScriptFontHintValues(BasePostScriptFontHintValues):
@ -150,7 +153,8 @@ class PostScriptFontHintValues(BasePostScriptFontHintValues):
def _asPairs(self, l):
"""Split a list of numbers into a list of pairs"""
assert len(l)%2 == 0, "Even number of values required: %s"%(`l`)
if not len(l)%2 == 0:
l = l[:-1]
n = [[l[i], l[i+1]] for i in range(0, len(l), 2)]
n.sort()
return n
@ -165,50 +169,80 @@ class PostScriptFontHintValues(BasePostScriptFontHintValues):
n.append(i[1])
return n
def _checkForFontLabSanity(self, attribute, values):
"""Function to handle problems with FontLab not allowing the max number of
alignment zones to be set to the max number.
Input: the name of the zones and the values to be set
Output: a warning when there are too many values to be set
and the max values which FontLab will allow.
"""
warn = False
if attribute in ['vStems', 'hStems']:
# the number of items to drop from the list if the list is too long,
# stems are single values, but the zones are pairs.
skip = 1
total = min(self._attributeNames[attribute]['max'], len(values))
if total == self._attributeNames[attribute]['max']:
total = self._attributeNames[attribute]['max'] - skip
warn = True
else:
skip = 2
values = self._flattenPairs(values)
total = min(self._attributeNames[attribute]['max']*2, len(values))
if total == self._attributeNames[attribute]['max']*2:
total = self._attributeNames[attribute]['max']*2 - skip
warn = True
if warn:
print "* * * WARNING: FontLab will only accept %d %s items maximum from Python. Dropping values: %s."%(self._attributeNames[attribute]['max']-1, attribute, `values[total:]`)
return total, values[:total]
def _getBlueValues(self):
return self._asPairs(self._object.blue_values[self._masterIndex])
def _setBlueValues(self, values):
values = self._flattenPairs(values)
self._object.blue_values_num = min(self._attributeNames['blueValues']['max']*2, len(values))-1
for i in range(self._object.blue_values_num+1):
total, values = self._checkForFontLabSanity('blueValues', values)
self._object.blue_values_num = total
for i in range(self._object.blue_values_num):
self._object.blue_values[self._masterIndex][i] = values[i]
def _getOtherBlues(self):
return self._asPairs(self._object.other_blues[self._masterIndex])
def _setOtherBlues(self, values):
values = self._flattenPairs(values)
self._object.other_blues_num = min(self._attributeNames['otherBlues']['max']*2, len(values))-1
for i in range(self._object.other_blues_num+1):
total, values = self._checkForFontLabSanity('otherBlues', values)
self._object.other_blues_num = total
for i in range(self._object.other_blues_num):
self._object.other_blues[self._masterIndex][i] = values[i]
def _getFamilyBlues(self):
return self._asPairs(self._object.family_blues[self._masterIndex])
def _setFamilyBlues(self, values):
values = self._flattenPairs(values)
self._object.family_blues_num = min(self._attributeNames['familyBlues']['max']*2, len(values))-1
for i in range(self._object.family_blues_num+1):
total, values = self._checkForFontLabSanity('familyBlues', values)
self._object.family_blues_num = total
for i in range(self._object.family_blues_num):
self._object.family_blues[self._masterIndex][i] = values[i]
def _getFamilyOtherBlues(self):
return self._asPairs(self._object.family_other_blues[self._masterIndex])
def _setFamilyOtherBlues(self, values):
values = self._flattenPairs(values)
self._object.family_other_blues_num = min(self._attributeNames['familyOtherBlues']['max']*2, len(values))-1
for i in range(self._object.family_other_blues_num+1):
total, values = self._checkForFontLabSanity('familyOtherBlues', values)
self._object.family_other_blues_num = total
for i in range(self._object.family_other_blues_num):
self._object.family_other_blues[self._masterIndex][i] = values[i]
def _getVStems(self):
return list(self._object.stem_snap_v[self._masterIndex])
def _setVStems(self, values):
self._object.stem_snap_v_num = min(self._attributeNames['vStems']['max'], len(values))-1
for i in range(self._object.stem_snap_v_num+1):
total, values = self._checkForFontLabSanity('vStems', values)
self._object.stem_snap_v_num = total
for i in range(self._object.stem_snap_v_num):
self._object.stem_snap_v[self._masterIndex][i] = values[i]
def _getHStems(self):
return list(self._object.stem_snap_h[self._masterIndex])
def _setHStems(self, values):
self._object.stem_snap_h_num = min(self._attributeNames['hStems']['max'], len(values))-1
for i in range(self._object.stem_snap_h_num+1):
total, values = self._checkForFontLabSanity('hStems', values)
self._object.stem_snap_h_num = total
for i in range(self._object.stem_snap_h_num):
self._object.stem_snap_h[self._masterIndex][i] = values[i]
blueFuzz = property(_getBlueFuzz, _setBlueFuzz, doc="postscript hints: bluefuzz value")