def addFontFiles(self, font_paths, monospace_only=True):
""" Add a list of font files to the FontManger font search space.
Each element of the font_paths list must be a valid path including
the font file name. Relative paths can be used, with the current
working directory being the origin.
If monospace_only is True, each font file will only be added if it is
a monospace font (as only monospace fonts are currently supported by
TextBox).
Adding fonts to the FontManager is not persistent across runs of
the script, so any extra font paths need to be added each time the
script starts.
"""
fi_list = []
for fp in font_paths:
if os.path.isfile(fp) and os.path.exists(fp):
face = Face(fp)
if monospace_only:
if face.is_fixed_width:
fi_list.append(self._createFontInfo(fp, face))
else:
fi_list.append(self._createFontInfo(fp, face))
self.font_family_styles.sort()
return fi_list
def __init__(self, font_info, size, dpi):
self.font_info = font_info
self.size = size
self.dpi = dpi
self.id = self.getIdFromArgs(font_info, size, dpi)
self._face = Face(font_info.path)
self._face.set_char_size(height=self.size * 64, vres=self.dpi)
self.charcode2glyph = None
self.charcode2unichr = None
self.charcode2displaylist = None
self.max_ascender = None
self.max_descender = None
self.max_tile_width = None
self.max_tile_height = None
self.max_bitmap_size = None
self.total_bitmap_area = 0
self.atlas = None
def __init__(self,font_info,size,dpi):
self.font_info=font_info
self.size=size
self.dpi=dpi
self.id=self.getIdFromArgs(font_info,size,dpi)
self._face=Face(font_info.path)
self._face.set_char_size(height=self.size*64,vres=self.dpi)
self.charcode2glyph=None
self.charcode2unichr=None
self.charcode2displaylist=None
self.max_ascender = None
self.max_descender = None
self.max_tile_width = None
self.max_tile_height = None
self.max_bitmap_size = None
self.total_bitmap_area=0
self.atlas=None
def addFontFiles(self,font_paths,monospace_only=True):
"""
Add a list of font files to the FontManger font search space. Each element
of the font_paths list must be a valid path including the font file name.
Relative paths can be used, with the current working directory being
the origin.
If monospace_only is True, each font file will only be added if it is a
monospace font (as only monospace fonts are currently supported by
TextBox).
Adding fonts to the FontManager is not persistant across runs of
the script, so any extra font paths need to be added each time the
script starts.
"""
fi_list=[]
for fp in font_paths:
if os.path.isfile(fp) and os.path.exists(fp):
try:
face = Face(fp)
if monospace_only:
if face.is_fixed_width:
fi_list.append(self._createFontInfo(fp,face))
else:
fi_list.append(self._createFontInfo(fp,face))
except FT_Exception, fte:
pass
except Exception, e:
print
print ' --- Error --- '
print 'Error opening font path:', fp
print 'Loaded OK count:', len(fi_list)
import traceback
traceback.print_exc()
return None
class MonospaceFontAtlas(object):
def __init__(self,font_info,size,dpi):
self.font_info=font_info
self.size=size
self.dpi=dpi
self.id=self.getIdFromArgs(font_info,size,dpi)
self._face=Face(font_info.path)
self._face.set_char_size(height=self.size*64,vres=self.dpi)
self.charcode2glyph=None
self.charcode2unichr=None
self.charcode2displaylist=None
self.max_ascender = None
self.max_descender = None
self.max_tile_width = None
self.max_tile_height = None
self.max_bitmap_size = None
self.total_bitmap_area=0
self.atlas=None
def getID(self):
return self.id
@staticmethod
def getIdFromArgs(font_info,size,dpi):
return "%s_%d_%d"%(font_info.getID(),size,dpi)
def createFontAtlas(self):
if self.atlas:
self.atlas.free()
self.atlas=None
self.charcode2glyph={}
self.charcode2unichr={}
self.max_ascender = None
self.max_descender = None
self.max_tile_width = None
self.max_tile_height = None
self.max_bitmap_size = None
self.total_bitmap_area=0
# load font glyphs and calculate max. char size.
# This is used when the altas is created to properly size the tex.
# i.e. max glyph size * num glyphs
#
max_w,max_h=0,0
max_ascender, max_descender, max_tile_width = 0, 0, 0
face=self._face
face.set_char_size(height=self.size*64,vres=self.dpi)
# Create texAtlas for glyph set.
x_ppem=face.size.x_ppem
y_ppem=face.size.x_ppem
units_ppem=self.font_info.units_per_em
est_max_width=(face.bbox.xMax-face.bbox.xMin)/float(units_ppem)*x_ppem
est_max_height=face.size.ascender/float(units_ppem)*y_ppem
target_atlas_area=int(est_max_width*est_max_height)*face.num_glyphs
# make sure it is big enough. ;)
# height is trimmed before sending to video ram anyhow.
target_atlas_area=target_atlas_area*3.0
pow2_area=nextPow2(target_atlas_area)
atlas_width=2048
atlas_height=pow2_area/atlas_width
self.atlas=TextureAtlas(atlas_width,atlas_height)
charcode, gindex=face.get_first_char()
while gindex:
uchar = unichr(charcode)
if ud.category(uchar) not in (u'Zl',u'Zp',u'Cc',u'Cf',u'Cs',u'Co',u'Cn'):
self.charcode2unichr[charcode]=uchar
face.load_char(uchar, FT_LOAD_RENDER | FT_LOAD_FORCE_AUTOHINT )
bitmap = face.glyph.bitmap
self.total_bitmap_area+=bitmap.width*bitmap.rows
max_ascender = max( max_ascender, face.glyph.bitmap_top)
max_descender = max( max_descender, bitmap.rows - face.glyph.bitmap_top )
max_tile_width = max( max_tile_width,bitmap.width)
max_w=max(bitmap.width,max_w)
max_h=max(bitmap.rows,max_h)
x,y,w,h = self.atlas.get_region(bitmap.width+2, bitmap.rows+2)
if x < 0:
raise Exception("MonospaceFontAtlas.get_region failed for: {0}, requested area: {1}. Atlas Full!".format(charcode,(bitmap.width+2, bitmap.rows+2)))
x,y = x+1, y+1
w,h = w-2, h-2
data = np.array(bitmap._FT_Bitmap.buffer[:(bitmap.rows*bitmap.width)],dtype=np.ubyte).reshape(h,w,1)
self.atlas.set_region((x,y,w,h), data)
self.charcode2glyph[charcode]=dict(
offset=(face.glyph.bitmap_left, face.glyph.bitmap_top),
size=(w,h),
atlas_coords=(x,y,w,h),
texcoords = [x, y, x + w, y + h],
index=gindex,
unichar=uchar
)
charcode, gindex = face.get_next_char(charcode, gindex)
self.max_ascender = max_ascender
self.max_descender = max_descender
self.max_tile_width = max_tile_width
self.max_tile_height = max_ascender+max_descender
self.max_bitmap_size=max_w,max_h
# resize atlas
height=nextPow2(self.atlas.max_y+1)
self.atlas.resize(height)
self.atlas.upload()
self.createDisplayLists()
self._face=None
#print 'w_max_glyth info:',w_max_glyph
#print 'h_max_glyth info:',h_max_glyph
def createDisplayLists(self):
glyph_count=len(self.charcode2unichr)
max_tile_width,max_tile_height=self.max_tile_width,self.max_tile_height
display_lists_for_chars={}
base = glGenLists(glyph_count)
for i,(charcode,glyph) in enumerate( self.charcode2glyph.iteritems()):
dl_index=base+i
uchar=self.charcode2unichr[charcode]
# update tex coords to reflect earlier resize of atlas height.
gx1,gy1,gx2,gy2=glyph['texcoords']
gx1=gx1/float(self.atlas.width)
gy1=gy1/float(self.atlas.height)
gx2=gx2/float(self.atlas.width)
gy2=gy2/float(self.atlas.height)
glyph['texcoords'] =[gx1,gy1,gx2,gy2]
glNewList(dl_index, GL_COMPILE)
if uchar not in [u'\t',u'\n']:
glBegin( GL_QUADS )
x1 = glyph['offset'][0]
x2 = x1+glyph['size'][0]
y1=(self.max_ascender-glyph['offset'][1])
y2=y1+glyph['size'][1]
glTexCoord2f( gx1, gy2 ), glVertex2f( x1,-y2 )
glTexCoord2f( gx1, gy1 ), glVertex2f( x1,-y1 )
glTexCoord2f( gx2, gy1 ), glVertex2f( x2,-y1 )
glTexCoord2f( gx2, gy2 ), glVertex2f( x2,-y2 )
glEnd( )
glTranslatef( max_tile_width,0,0)
glEndList( )
display_lists_for_chars[charcode]=dl_index
self.charcode2displaylist=display_lists_for_chars
def saveGlyphBitmap(self,file_name=None):
if file_name is None:
import os
#print 'CWD:',os.getcwd()
file_name=os.path.join(os.getcwd(),self.getID().lower().replace(u' ',u'_')+'.png')
from scipy import misc
if self.atlas is None:
self.loadAtlas()
if self.atlas.depth==1:
misc.imsave(file_name, self.atlas.data.reshape(self.atlas.data.shape[:2]))
else:
misc.imsave(file_name, self.atlas.data)
def __del__(self):
self._face=None
if self.atlas.texid:
glDeleteTextures(1, self.atlas.texid)
self.atlas.texid=None
self.atlas=None
if self.charcode2displaylist:
for dl in self.charcode2displaylist.values():
glDeleteLists(dl, 1)
self.charcode2displaylist.clear()
self.charcode2displaylist=None
if self.charcode2glyph:
self.charcode2glyph.clear()
self.charcode2glyph=None
if self.charcode2unichr:
self.charcode2unichr.clear()
self.charcode2unichr=None
class MonospaceFontAtlas(object):
def __init__(self, font_info, size, dpi):
self.font_info = font_info
self.size = size
self.dpi = dpi
self.id = self.getIdFromArgs(font_info, size, dpi)
self._face = Face(font_info.path)
self._face.set_char_size(height=self.size * 64, vres=self.dpi)
self.charcode2glyph = None
self.charcode2unichr = None
self.charcode2displaylist = None
self.max_ascender = None
self.max_descender = None
self.max_tile_width = None
self.max_tile_height = None
self.max_bitmap_size = None
self.total_bitmap_area = 0
self.atlas = None
def getID(self):
return self.id
@staticmethod
def getIdFromArgs(font_info, size, dpi):
return "%s_%d_%d" % (font_info.getID(), size, dpi)
def createFontAtlas(self):
if self.atlas:
self.atlas.free()
self.atlas = None
self.charcode2glyph = {}
self.charcode2unichr = {}
self.max_ascender = None
self.max_descender = None
self.max_tile_width = None
self.max_tile_height = None
self.max_bitmap_size = None
self.total_bitmap_area = 0
# load font glyphs and calculate max. char size.
# This is used when the altas is created to properly size the tex.
# i.e. max glyph size * num glyphs
max_w, max_h = 0, 0
max_ascender, max_descender, max_tile_width = 0, 0, 0
face = self._face
face.set_char_size(height=self.size * 64, vres=self.dpi)
# Create texAtlas for glyph set.
x_ppem = face.size.x_ppem
y_ppem = face.size.x_ppem
units_ppem = self.font_info.units_per_em
est_max_width = ((face.bbox.xMax - face.bbox.xMin) /
float(units_ppem) * x_ppem)
est_max_height = face.size.ascender / float(units_ppem) * y_ppem
target_atlas_area = int(
est_max_width * est_max_height) * face.num_glyphs
# make sure it is big enough. ;)
# height is trimmed before sending to video ram anyhow.
target_atlas_area = target_atlas_area * 3.0
pow2_area = nextPow2(target_atlas_area)
atlas_width = 2048
atlas_height = pow2_area / atlas_width
self.atlas = TextureAtlas(atlas_width, atlas_height * 2)
charcode, gindex = face.get_first_char()
while gindex:
uchar = chr(charcode)
if ud.category(uchar) not in (u'Zl', u'Zp', u'Cc', u'Cf', u'Cs',
u'Co', u'Cn'):
self.charcode2unichr[charcode] = uchar
face.load_char(uchar, FT_LOAD_RENDER | FT_LOAD_FORCE_AUTOHINT)
bitmap = face.glyph.bitmap
self.total_bitmap_area += bitmap.width * bitmap.rows
max_ascender = max(max_ascender, face.glyph.bitmap_top)
max_descender = max(max_descender,
bitmap.rows - face.glyph.bitmap_top)
max_tile_width = max(max_tile_width, bitmap.width)
max_w = max(bitmap.width, max_w)
max_h = max(bitmap.rows, max_h)
x, y, w, h = self.atlas.get_region(bitmap.width + 2,
bitmap.rows + 2)
if x < 0:
msg = ("MonospaceFontAtlas.get_region failed "
"for: {0}, requested area: {1}. Atlas Full!")
vals = charcode, (bitmap.width + 2, bitmap.rows + 2)
raise Exception(msg.format(vals))
x, y = x + 1, y + 1
w, h = w - 2, h - 2
data = np.array(bitmap._FT_Bitmap.buffer[:(bitmap.rows *
bitmap.width)],
dtype=np.ubyte).reshape(h, w, 1)
self.atlas.set_region((x, y, w, h), data)
self.charcode2glyph[charcode] = dict(
offset=(face.glyph.bitmap_left, face.glyph.bitmap_top),
size=(w, h),
atlas_coords=(x, y, w, h),
texcoords=[x, y, x + w, y + h],
index=gindex,
unichar=uchar)
charcode, gindex = face.get_next_char(charcode, gindex)
self.max_ascender = max_ascender
self.max_descender = max_descender
self.max_tile_width = max_tile_width
self.max_tile_height = max_ascender + max_descender
self.max_bitmap_size = max_w, max_h
# resize atlas
height = nextPow2(self.atlas.max_y + 1)
self.atlas.resize(height)
self.atlas.upload()
self.createDisplayLists()
self._face = None
def createDisplayLists(self):
glyph_count = len(self.charcode2unichr)
max_tile_width = self.max_tile_width
max_tile_height = self.max_tile_height
display_lists_for_chars = {}
base = glGenLists(glyph_count)
for i, (charcode, glyph) in enumerate(self.charcode2glyph.items()):
dl_index = base + i
uchar = self.charcode2unichr[charcode]
# update tex coords to reflect earlier resize of atlas height.
gx1, gy1, gx2, gy2 = glyph['texcoords']
gx1 = gx1 / float(self.atlas.width)
gy1 = gy1 / float(self.atlas.height)
gx2 = gx2 / float(self.atlas.width)
gy2 = gy2 / float(self.atlas.height)
glyph['texcoords'] = [gx1, gy1, gx2, gy2]
glNewList(dl_index, GL_COMPILE)
if uchar not in [u'\t', u'\n']:
glBegin(GL_QUADS)
x1 = glyph['offset'][0]
x2 = x1 + glyph['size'][0]
y1 = (self.max_ascender - glyph['offset'][1])
y2 = y1 + glyph['size'][1]
glTexCoord2f(gx1, gy2), glVertex2f(x1, -y2)
glTexCoord2f(gx1, gy1), glVertex2f(x1, -y1)
glTexCoord2f(gx2, gy1), glVertex2f(x2, -y1)
glTexCoord2f(gx2, gy2), glVertex2f(x2, -y2)
glEnd()
glTranslatef(max_tile_width, 0, 0)
glEndList()
display_lists_for_chars[charcode] = dl_index
self.charcode2displaylist = display_lists_for_chars
def saveGlyphBitmap(self, file_name=None):
if file_name is None:
import os
file_name = os.path.join(
os.getcwd(),
self.getID().lower().replace(u' ', u'_') + '.png')
from scipy import misc
if self.atlas is None:
self.loadAtlas()
if self.atlas.depth == 1:
misc.imsave(file_name,
self.atlas.data.reshape(self.atlas.data.shape[:2]))
else:
misc.imsave(file_name, self.atlas.data)
def __del__(self):
self._face = None
if self.atlas.texid is not None:
#glDeleteTextures(1, self.atlas.texid)
self.atlas.texid = None
self.atlas = None
if self.charcode2displaylist is not None:
# for dl in self.charcode2displaylist.values():
# glDeleteLists(dl, 1)
self.charcode2displaylist.clear()
self.charcode2displaylist = None
if self.charcode2glyph is not None:
self.charcode2glyph.clear()
self.charcode2glyph = None
if self.charcode2unichr is not None:
self.charcode2unichr.clear()
self.charcode2unichr = None
