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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 string import find
from anchors import alignComponentsToAnchors, getAnchorByName
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):
for anchor in f[srcname].anchors:
if anchor.name in ("top_dd", "bottom_dd", "top0315"):
g.appendAnchor(anchor.name, (anchor.x + width, anchor.y))
if ("top" == anchor.name and
not any(a.name == "parent_top" for a in g.anchors)):
g.appendAnchor("parent_top", anchor.position)
if ("bottom" == anchor.name and
not any(a.name == "bottom" for a in g.anchors)):
g.appendAnchor("bottom", anchor.position)
if any(a.name == "top" for a in g.anchors):
return
anchor_parent_top = getAnchorByName(g, "parent_top")
if anchor_parent_top is not None:
g.appendAnchor("top", anchor_parent_top.position)
def generateGlyph(f,gname,glyphList={}):
glyphName, baseName, accentNames, offset = parseComposite(gname)
if f.has_key(glyphName):
print('Existing glyph "%s" found in font, ignoring composition rule '
'"%s"' % (glyphName, gname))
return
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:
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 len(accentNames) > 0:
alignComponentsToAnchors(f, glyphName, baseName, accentNames)
if offset[0] != 0 or offset[1] != 0:
g.width += offset[1] + offset[0]
g.move((offset[0], 0), anchors=False)
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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