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# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import re
from anchors import alignComponentsToAnchors
from string import find
def parseComposite(composite):
c = composite.split("=")
d = c[1].split("/")
glyphName = d[0]
if len(d) == 1:
offset = [0,0]
else:
offset = [int(i) for i in d[1].split(",")]
accentString = c[0]
accents = accentString.split("+")
baseName = accents.pop(0)
accentNames = [i.split(":") for i in accents ]
return (glyphName, baseName, accentNames, offset)
def copyMarkAnchors(f, g, srcname, width):
unicode_range = range(0x0030, 0x02B0) + range(0x1E00, 0x1EFF)
anchors = f[srcname].anchors
for anchor in anchors:
if "top_dd" == anchor.name:
g.appendAnchor(anchor.name, (anchor.x + width, anchor.y))
if "bottom_dd" == anchor.name:
g.appendAnchor(anchor.name, (anchor.x + width, anchor.y))
if "top0315" == anchor.name:
g.appendAnchor(anchor.name, (anchor.x + width, anchor.y))
if "top" == anchor.name:
if g.unicode == None:
if -1 == find(g.name, ".ccmp"):
continue
if False == (g.unicode in unicode_range):
if -1 == find(g.name, ".ccmp"):
continue
#if g.unicode > 0x02B0:
# continue
parenttop_present = 0
for anc in g.anchors:
if anc.name == "parent_top":
parenttop_present = 1
if 0 == parenttop_present:
g.appendAnchor("parent_top", anchor.position)
if "bottom" == anchor.name:
if g.unicode == None:
continue
if False == (g.unicode in unicode_range):
continue
#if g.unicode > 0x02B0:
# continue
bottom_present = 0
for anc in g.anchors:
if anc.name == "bottom":
bottom_present = 1
if 0 == bottom_present:
g.appendAnchor("bottom", anchor.position)
# g.appendAnchor("top", anchor.position)
# if "rhotichook" == anchor.name:
# g.appendAnchor(anchor.name, (anchor.x + width, anchor.y))
#print g.anchors
for anchor in g.anchors:
if "top" == anchor.name:
#print g.name, g.anchors
return
anchor_parent_top = None
for anchor in g.anchors:
if "parent_top" == anchor.name:
anchor_parent_top = anchor
break
if anchor_parent_top:
g.appendAnchor("top", anchor_parent_top.position)
def generateGlyph(f,gname,glyphList={}):
glyphName, baseName, accentNames, offset = parseComposite(gname)
if baseName.find("_") != -1:
g = f.newGlyph(glyphName)
for componentName in baseName.split("_"):
g.appendComponent(componentName, (g.width, 0))
g.width += f[componentName].width
setUnicodeValue(g, glyphList)
else:
if not f.has_key(glyphName):
try:
f.compileGlyph(glyphName, baseName, accentNames)
except KeyError as e:
print ("KeyError raised for composition rule '%s', likely %s "
"anchor not found in glyph '%s'" % (gname, e, baseName))
return
g = f[glyphName]
setUnicodeValue(g, glyphList)
copyMarkAnchors(f, g, baseName, offset[1] + offset[0])
if offset[0] != 0 or offset[1] != 0:
g.width += offset[1] + offset[0]
g.move((offset[0], 0), anchors=False)
if len(accentNames) > 0:
alignComponentsToAnchors(f, glyphName, baseName, accentNames)
else:
print ("Existing glyph '%s' found in font, ignoring composition "
"rule '%s'" % (glyphName, gname))
def setUnicodeValue(glyph, glyphList):
"""Try to ensure glyph has a unicode value -- used by FDK to make OTFs."""
if glyph.name in glyphList:
glyph.unicode = int(glyphList[glyph.name], 16)
else:
uvNameMatch = re.match("uni([\dA-F]{4})$", glyph.name)
if uvNameMatch:
glyph.unicode = int(uvNameMatch.group(1), 16)
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