def getKerning(self, glyphIndex0, glyphIndex1):
kerning = freetype.FT_Vector(0,0)
error = freetype.FT_Get_Kerning( self.ftFont._FT_Face,
glyphIndex0, glyphIndex1,
ft_enums.FT_KERNING_UNSCALED,
freetype.byref(kerning) )
if error: raise freetype.FT_Exception( error )
return kerning.x
def getKerning(self, glyphIndex0, glyphIndex1):
kerning = freetype.FT_Vector(0, 0)
error = freetype.FT_Get_Kerning(self.ftFont._FT_Face, glyphIndex0,
glyphIndex1,
ft_enums.FT_KERNING_UNSCALED,
freetype.byref(kerning))
if error: raise freetype.FT_Exception(error)
return kerning.x
def load_character(self, character):
assert self.face is not None
assert len(character) == 1
if character not in self.foreTextures:
# load background glyph
# the render option will lead to an outline glyph (not rendered)
self.face.load_char(character, ft.FT_LOAD_FLAGS['FT_LOAD_DEFAULT'])
backGlyph = ft.FT_Glyph()
ft.FT_Get_Glyph(self.face.glyph._FT_GlyphSlot, ft.byref(backGlyph))
backGlyph = ft.Glyph(backGlyph)
# add border to the glyph
error = ft.FT_Glyph_StrokeBorder(ft.byref(backGlyph._FT_Glyph),
self.stroker._FT_Stroker, False,
False)
if error:
raise ft.FT_Exception(error)
# the render option will lead to a rendered glyph
backBitmapGlyph = backGlyph.to_bitmap(
ft.FT_RENDER_MODES['FT_RENDER_MODE_NORMAL'], 0)
backBitmap = backBitmapGlyph.bitmap
backHeight, backWidth = backBitmap.rows, backBitmap.width
backBitmap = np.array(backBitmap.buffer, dtype=np.uint8).reshape(
(backHeight, backWidth))
backTexture = _create_text_texture(backBitmap)
backSlot = CharacterSlot(backTexture, backBitmapGlyph)
self.backTextures[character] = backSlot
# load foreground glyph
self.face.load_char(character, ft.FT_LOAD_FLAGS['FT_LOAD_RENDER'])
foreBitmap = self.face.glyph.bitmap
foreHeight, foreWidth = foreBitmap.rows, foreBitmap.width
foreBitmap = np.array(foreBitmap.buffer, dtype=np.uint8).reshape(
(foreHeight, foreWidth))
foreTexture = _create_text_texture(foreBitmap)
foreSlot = CharacterSlot(foreTexture, self.face.glyph)
self.foreTextures[character] = foreSlot
def get_glyph(self, stroke=None):
glyph = self.face.glyph.get_glyph()
if stroke is not None:
stroke_width = int(stroke * 64 * self.font.hres / 330)
stroker = ft.Stroker()
stroker.set(stroke_width, ft.FT_STROKER_LINECAP_ROUND, ft.FT_STROKER_LINEJOIN_ROUND, 0)
# StrokeBorder is not wrapped in freetype-py.Glyph...
error = ft.FT_Glyph_StrokeBorder(ft.byref(glyph._FT_Glyph), stroker._FT_Stroker, 0, 0)
if error:
raise ft.FT_Exception(error)
blyph = glyph.to_bitmap(ft.FT_RENDER_MODE_NORMAL, ft.Vector(0,0))
blyph.glyph = glyph # keep a reference, otherwise it blows up
return blyph
def get_glyph(self, stroke=None):
glyph = self.face.glyph.get_glyph()
if stroke is not None:
stroke_width = int(stroke * 64 * self.font.hres / 330)
stroker = ft.Stroker()
stroker.set(stroke_width, ft.FT_STROKER_LINECAP_ROUND, ft.FT_STROKER_LINEJOIN_ROUND, 0)
# StrokeBorder is not wrapped in freetype-py.Glyph...
error = ft.FT_Glyph_StrokeBorder(ft.byref(glyph._FT_Glyph), stroker._FT_Stroker, 0, 0)
if error:
raise ft.FT_Exception(error)
blyph = glyph.to_bitmap(ft.FT_RENDER_MODE_NORMAL, ft.Vector(0,0))
blyph.glyph = glyph # keep a reference, otherwise it blows up
return blyph
def processFont(self, filepath):
# print
# print 'filepath', filepath
face = None
try:
if os.path.basename(filepath).lower().endswith('.otf'):
print 'ignoring otf', os.path.basename(filepath)
return
face = freetype.Face(filepath)
postscript_name = face.postscript_name
if postscript_name in self.processedPostscriptNames:
return
# print '\t', 'postscript_name', postscript_name
self.processedPostscriptNames.add(postscript_name)
# print 'freetype.__dll__.FT_Get_Kerning', freetype.__dll__.FT_Get_Kerning, type(freetype.__dll__.FT_Get_Kerning)
# freetype.FT_Get_Kerning = freetype.__dll__.FT_Get_Kerning
# hasKerningTable = freetype.__dll__.FT_Get_Kerning(face._FT_Face)
# print 'hasKerningTable', hasKerningTable, type(hasKerningTable)
print 'postscript_name', postscript_name, os.path.basename(
filepath), 'num_glyphs', face.num_glyphs
glyphIndexToCharacterMap = {}
# self.ftFont.select_charmap(ft_enums.FT_ENCODING_UNICODE)
characterCode, glyphIndex = face.get_first_char()
while glyphIndex > 0:
glyphIndexToCharacterMap[glyphIndex] = characterCode
characterCode, glyphIndex = face.get_next_char(
characterCode, 0)
units_per_EM = face.units_per_EM
pairCount = 0
for glyphIndex0 in glyphIndexToCharacterMap:
for glyphIndex1 in glyphIndexToCharacterMap:
# for index0 in xrange(1, face.num_glyphs):
# for index1 in xrange(1, face.num_glyphs):
kerning = freetype.FT_Vector(0, 0)
error = freetype.FT_Get_Kerning(
face._FT_Face,
glyphIndex0,
glyphIndex1,
# freetype.ft_enums.FT_KERNING_DEFAULT,
freetype.ft_enums.FT_KERNING_UNSCALED,
freetype.byref(kerning))
if error: raise freetype.FT_Exception(error)
# return kerning
# kerning = face.get_kerning(index0, index1, mode=freetype.ft_enums.FT_KERNING_UNSCALED)
if kerning.x != 0:
key = (
glyphIndexToCharacterMap[glyphIndex0],
glyphIndexToCharacterMap[glyphIndex1],
)
# print 'glyphIndex0, glyphIndex1', glyphIndex0, glyphIndex1, key
self.kerningPairCountMap[
key] = self.kerningPairCountMap.get(key, 0) + 1
absEms = abs(kerning.x / float(units_per_EM))
self.kerningPairAbsEmsMap[
key] = self.kerningPairAbsEmsMap.get(key,
0) + absEms
pairCount += 1
# print 'kerning', kerning, type(kerning), kerning.x, type(kerning.x)
# print 'kerning', kerning, type(kerning), kerning.x, type(kerning.x), index0, index1
print '\t', 'pairCount', pairCount
if pairCount > 0:
self.nonEmptyPostscriptNames.add(postscript_name)
# print '.'
# print 'complete.'
# import sys
# sys.exit(0)
# kerningPairCountMap
# glyphs = []
# characterCode, glyphIndex = face.get_first_char();
## while characterCode > 0 and glyphIndex > 0:
# while glyphIndex > 0:
# if characterCode > 0:
# glyphs.append(characterCode)
# characterCode, glyphIndex = face.get_next_char(characterCode, 0);
#
# for glyph in glyphs:
# self.glyphCountMap[glyph] = 1 + self.glyphCountMap.get(glyph, 0)
#
# if len(glyphs) > 0:
# self.nonEmptyPostscriptNames.add(postscript_name)
# pass
## print 'glyphs', len(glyphs), glyphs[0], glyphs[-1]
## print 'characterCode', type(characterCode), characterCode
# else:
# print 'filepath', filepath
# print 'no glyphs'
# print 'characterCode, glyphIndex', characterCode, glyphIndex
except Exception, e:
print e.message
def processFont(self, filepath):
# print
# print 'filepath', filepath
face = None
try:
if os.path.basename(filepath).lower().endswith('.otf'):
print 'ignoring otf', os.path.basename(filepath)
return
face = freetype.Face(filepath)
postscript_name = face.postscript_name
if postscript_name in self.processedPostscriptNames:
return
# print '\t', 'postscript_name', postscript_name
self.processedPostscriptNames.add(postscript_name)
# print 'freetype.__dll__.FT_Get_Kerning', freetype.__dll__.FT_Get_Kerning, type(freetype.__dll__.FT_Get_Kerning)
# freetype.FT_Get_Kerning = freetype.__dll__.FT_Get_Kerning
# hasKerningTable = freetype.__dll__.FT_Get_Kerning(face._FT_Face)
# print 'hasKerningTable', hasKerningTable, type(hasKerningTable)
print 'postscript_name', postscript_name, os.path.basename(filepath), 'num_glyphs', face.num_glyphs
glyphIndexToCharacterMap = {}
# self.ftFont.select_charmap(ft_enums.FT_ENCODING_UNICODE)
characterCode, glyphIndex = face.get_first_char();
while glyphIndex > 0:
glyphIndexToCharacterMap[glyphIndex] = characterCode
characterCode, glyphIndex = face.get_next_char(characterCode, 0)
units_per_EM = face.units_per_EM
pairCount = 0
for glyphIndex0 in glyphIndexToCharacterMap:
for glyphIndex1 in glyphIndexToCharacterMap:
# for index0 in xrange(1, face.num_glyphs):
# for index1 in xrange(1, face.num_glyphs):
kerning = freetype.FT_Vector(0, 0)
error = freetype.FT_Get_Kerning(face._FT_Face,
glyphIndex0, glyphIndex1,
# freetype.ft_enums.FT_KERNING_DEFAULT,
freetype.ft_enums.FT_KERNING_UNSCALED,
freetype.byref(kerning))
if error: raise freetype.FT_Exception(error)
# return kerning
# kerning = face.get_kerning(index0, index1, mode=freetype.ft_enums.FT_KERNING_UNSCALED)
if kerning.x != 0:
key = ( glyphIndexToCharacterMap[glyphIndex0],
glyphIndexToCharacterMap[glyphIndex1], )
# print 'glyphIndex0, glyphIndex1', glyphIndex0, glyphIndex1, key
self.kerningPairCountMap[key] = self.kerningPairCountMap.get(key, 0) + 1
absEms = abs(kerning.x / float(units_per_EM))
self.kerningPairAbsEmsMap[key] = self.kerningPairAbsEmsMap.get(key, 0) + absEms
pairCount += 1
# print 'kerning', kerning, type(kerning), kerning.x, type(kerning.x)
# print 'kerning', kerning, type(kerning), kerning.x, type(kerning.x), index0, index1
print '\t', 'pairCount', pairCount
if pairCount > 0:
self.nonEmptyPostscriptNames.add(postscript_name)
# print '.'
# print 'complete.'
# import sys
# sys.exit(0)
# kerningPairCountMap
# glyphs = []
# characterCode, glyphIndex = face.get_first_char();
## while characterCode > 0 and glyphIndex > 0:
# while glyphIndex > 0:
# if characterCode > 0:
# glyphs.append(characterCode)
# characterCode, glyphIndex = face.get_next_char(characterCode, 0);
#
# for glyph in glyphs:
# self.glyphCountMap[glyph] = 1 + self.glyphCountMap.get(glyph, 0)
#
# if len(glyphs) > 0:
# self.nonEmptyPostscriptNames.add(postscript_name)
# pass
## print 'glyphs', len(glyphs), glyphs[0], glyphs[-1]
## print 'characterCode', type(characterCode), characterCode
# else:
# print 'filepath', filepath
# print 'no glyphs'
# print 'characterCode, glyphIndex', characterCode, glyphIndex
except Exception, e:
print e.message