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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.
from fontbuild.features import updateFeature
aliases = [["uni0430", "a"], ["uni0435", "e"], ["uni0440", "p"], ["uni0441", "c"], ["uni0445", "x"], ["uni0455", "s"], ["uni0456", "i"], ["uni0471", "psi"]]
def GetAliaseName(gname):
for i in range (len(aliases)):
if (gname == aliases[i][1]):
return aliases[i][0]
return None
def CreateAccNameList(font, acc_anchor_name, bCombAccentOnly = True):
#combrange = range(0x0300,0x0370) + range(0x1AB0,0x1ABF) + range(0x1DC0,0x1DE0)
lst = []
for g in font:
if bCombAccentOnly and g.width != 0: #((g.unicode < 0x0300) or (g.unicode > 0x362)):
continue
for anchor in g.anchors:
if acc_anchor_name == anchor.name:
lst.append(g.name)
return lst
def CreateAccGlyphList(font, acc_list, acc_anchor_name):
g_list = []
for g in font:
if g.name in acc_list:
for anchor in g.anchors:
if acc_anchor_name == anchor.name:
g_list.append([g.name, anchor.x, anchor.y])
break
return g_list
def CreateGlyphList(font, acc_list, anchor_name):
g_list = []
for g in font:
if g.name in acc_list:
continue
for anchor in g.anchors:
if anchor_name == anchor.name:
g_list.append([g.name, anchor.x, anchor.y])
break
return g_list
def Create_mark_lookup(accent_g_list, base_g_list, lookupname, acc_class, lookAliases = True):
txt = "lookup " + lookupname + " {\n"
for acc in accent_g_list:
txt += " markClass " + acc[0] + " <anchor " + `int(acc[1])` + " " + `int(acc[2])` + "> " + acc_class +";\n"
for base in base_g_list:
txt += " pos base " + base[0] + " <anchor " + `int(base[1])` + " " + `int(base[2])` + "> mark " + acc_class + ";\n"
if (lookAliases):
base2 = GetAliaseName(base[0])
if (None == base2):
continue
txt += " pos base " + base2 + " <anchor " + `int(base[1])` + " " + `int(base[2])` + "> mark " + acc_class + ";\n"
txt += "} " + lookupname + ";\n"
return txt
##### main ##############
def GenerateFeature_mark(font):
combination_anchor_list = [
["top", "_marktop", True, True],
["bottom", "_markbottom", True, True],
["top_dd", "_marktop_dd", True, False],
["bottom_dd", "_markbottom_dd", True, False],
["rhotichook", "_markrhotichook", False, False],
["top0315", "_marktop0315", False, False],
["parent_top", "_markparent_top", False, False],
["parenthesses.w1", "_markparenthesses.w1", False, False],
["parenthesses.w2", "_markparenthesses.w2", False, False],
["parenthesses.w3", "_markparenthesses.w3", False, False]
]
text = "feature mark {\n"
for n in range(len(combination_anchor_list)):
accent_name_list = []
accent_mark_list = []
base_mark_list = []
anchors_pair = combination_anchor_list[n]
anchor_name = anchors_pair[0]
acc_anchor_name = anchors_pair[1]
comb_accent_only = anchors_pair[2]
expand_to_composits = anchors_pair[3]
lookupname = "mark"+`n+1`
classname = "@MC_" + anchor_name
accent_name_list = CreateAccNameList(font, acc_anchor_name, comb_accent_only)
accent_mark_list = CreateAccGlyphList(font, accent_name_list, acc_anchor_name)
base_mark_list = CreateGlyphList(font, accent_name_list, anchor_name)
text += Create_mark_lookup(accent_mark_list, base_mark_list, lookupname, classname, expand_to_composits)
text += "} mark;\n"
updateFeature(font, "mark", text)
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