def save(self, file):
#avoid crashes if they wrote nothing in the page
if self.data == None:
self.data = TestStream
if self.compression == 1:
comp = zlib.compress(self.data) #this bit is very fast...
base85 = pdfutils._AsciiBase85Encode(comp) #...sadly this isn't
wrapped = pdfutils._wrap(base85)
data_to_write = wrapped
else:
data_to_write = self.data
# the PDF length key should contain the length including
# any extra LF pairs added by Print on DOS.
#lines = len(string.split(self.data,'\n'))
#length = len(self.data) + lines # one extra LF each
length = len(data_to_write) + len(LINEEND) #AR 19980202
if self.compression:
file.write('<< /Length %d /Filter [/ASCII85Decode /FlateDecode]>>' % length + LINEEND)
else:
file.write('<< /Length %d >>' % length + LINEEND)
file.write('stream' + LINEEND)
file.write(data_to_write + LINEEND)
file.write('endstream' + LINEEND)
def save(self, file):
#avoid crashes if they wrote nothing in the page
if self.data == None:
self.data = TestStream
if self.compression == 1:
comp = zlib.compress(self.data) #this bit is very fast...
base85 = pdfutils._AsciiBase85Encode(comp) #...sadly this isn't
wrapped = pdfutils._wrap(base85)
data_to_write = wrapped
else:
data_to_write = self.data
# the PDF length key should contain the length including
# any extra LF pairs added by Print on DOS.
#lines = len(string.split(self.data,'\n'))
#length = len(self.data) + lines # one extra LF each
length = len(data_to_write) + len(LINEEND) #AR 19980202
if self.compression:
file.write('<< /Length %d /Filter [/ASCII85Decode /FlateDecode]>>' % length + LINEEND)
else:
file.write('<< /Length %d >>' % length + LINEEND)
file.write('stream' + LINEEND)
file.write(data_to_write + LINEEND)
file.write('endstream' + LINEEND)
def drawInlineImage(self, image, x, y, width=None, height=None):
"""Draw a PIL Image into the specified rectangle. If width and
height are omitted, they are calculated from the image size.
Also allow file names as well as images. This allows a
caching mechanism"""
# print "drawInlineImage: x=%s, y=%s, width = %s, height=%s " % (x,y, width, height)
try:
import Image
except ImportError:
print 'Python Imaging Library not available'
return
try:
import zlib
except ImportError:
print 'zlib not available'
return
self._currentPageHasImages = 1
if type(image) == StringType:
if os.path.splitext(image)[1] in ['.jpg', '.JPG']:
#directly process JPEG files
#open file, needs some error handling!!
imageFile = open(image, 'rb')
info = self.readJPEGInfo(imageFile)
imgwidth, imgheight = info[0], info[1]
if info[2] == 1:
colorSpace = 'DeviceGray'
elif info[2] == 3:
colorSpace = 'DeviceRGB'
else: #maybe should generate an error, is this right for CMYK?
colorSpace = 'DeviceCMYK'
imageFile.seek(0) #reset file pointer
imagedata = []
imagedata.append('BI') # begin image
# this describes what is in the image itself
imagedata.append('/Width %0.4f /Height %0.4f' %
(info[0], info[1]))
imagedata.append('/BitsPerComponent 8')
imagedata.append('/ColorSpace /%s' % colorSpace)
imagedata.append('/Filter [ /ASCII85Decode /DCTDecode]')
imagedata.append('ID')
#write in blocks of (??) 60 characters per line to a list
compressed = imageFile.read()
encoded = pdfutils._AsciiBase85Encode(compressed)
outstream = cStringIO.StringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
else:
if not pdfutils.cachedImageExists(image):
pdfutils.cacheImageFile(image)
#now we have one cached, slurp it in
cachedname = os.path.splitext(image)[0] + '.a85'
imagedata = open(cachedname, 'rb').readlines()
#trim off newlines...
imagedata = map(string.strip, imagedata)
#parse line two for width, height
words = string.split(imagedata[1])
imgwidth = string.atoi(words[1])
imgheight = string.atoi(words[3])
else:
#PIL Image
#work out all dimensions
myimage = image.convert('RGB')
imgwidth, imgheight = myimage.size
imagedata = []
imagedata.append('BI') # begin image
# this describes what is in the image itself
imagedata.append(
'/W %0.4f /H %0.4f /BPC 8 /CS /RGB /F [/A85 /Fl]' %
(imgwidth, imgheight))
imagedata.append('ID')
#use a flate filter and Ascii Base 85 to compress
raw = myimage.tostring()
assert (len(raw) == imgwidth * imgheight,
"Wrong amount of data for image")
compressed = zlib.compress(raw) #this bit is very fast...
encoded = pdfutils._AsciiBase85Encode(
compressed) #...sadly this isn't
#write in blocks of (??) 60 characters per line to a list
outstream = cStringIO.StringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
#now build the PDF for the image.
if not width:
width = imgwidth
if not height:
height = imgheight
# this says where and how big to draw it
#self._code.append('ET')
#self._code.append('q %0.4f 0 0 %0.4f %0.4f %0.4f cm' % (width, height, x, y+height))
if self.bottomup:
self._code.append('q %0.4f 0 0 %0.4f %0.4f %0.4f cm' %
(width, height, x, y))
else:
# multiply height by (-1) to overcome flip in coordinate system -cwl
self._code.append('q %0.4f 0 0 %0.4f %0.4f %0.4f cm' %
(width, -height, x, y + height))
self._code.extend(imagedata)
self._code.append('Q')
def drawInlineImage(self, image, x,y, width=None,height=None):
"""Draw a PIL Image into the specified rectangle. If width and
height are omitted, they are calculated from the image size.
Also allow file names as well as images. This allows a
caching mechanism"""
# print "drawInlineImage: x=%s, y=%s, width = %s, height=%s " % (x,y, width, height)
try:
import Image
except ImportError:
print 'Python Imaging Library not available'
return
try:
import zlib
except ImportError:
print 'zlib not available'
return
self._currentPageHasImages = 1
if type(image) == StringType:
if os.path.splitext(image)[1] in ['.jpg', '.JPG']:
#directly process JPEG files
#open file, needs some error handling!!
imageFile = open(image, 'rb')
info = self.readJPEGInfo(imageFile)
imgwidth, imgheight = info[0], info[1]
if info[2] == 1:
colorSpace = 'DeviceGray'
elif info[2] == 3:
colorSpace = 'DeviceRGB'
else: #maybe should generate an error, is this right for CMYK?
colorSpace = 'DeviceCMYK'
imageFile.seek(0) #reset file pointer
imagedata = []
imagedata.append('BI') # begin image
# this describes what is in the image itself
imagedata.append('/Width %0.4f /Height %0.4f' %(info[0], info[1]))
imagedata.append('/BitsPerComponent 8')
imagedata.append('/ColorSpace /%s' % colorSpace)
imagedata.append('/Filter [ /ASCII85Decode /DCTDecode]')
imagedata.append('ID')
#write in blocks of (??) 60 characters per line to a list
compressed = imageFile.read()
encoded = pdfutils._AsciiBase85Encode(compressed)
outstream = cStringIO.StringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
else:
if not pdfutils.cachedImageExists(image):
pdfutils.cacheImageFile(image)
#now we have one cached, slurp it in
cachedname = os.path.splitext(image)[0] + '.a85'
imagedata = open(cachedname,'rb').readlines()
#trim off newlines...
imagedata = map(string.strip, imagedata)
#parse line two for width, height
words = string.split(imagedata[1])
imgwidth = string.atoi(words[1])
imgheight = string.atoi(words[3])
else:
#PIL Image
#work out all dimensions
myimage = image.convert('RGB')
imgwidth, imgheight = myimage.size
imagedata = []
imagedata.append('BI') # begin image
# this describes what is in the image itself
imagedata.append('/W %0.4f /H %0.4f /BPC 8 /CS /RGB /F [/A85 /Fl]' % (imgwidth, imgheight))
imagedata.append('ID')
#use a flate filter and Ascii Base 85 to compress
raw = myimage.tostring()
assert(len(raw) == imgwidth * imgheight, "Wrong amount of data for image")
compressed = zlib.compress(raw) #this bit is very fast...
encoded = pdfutils._AsciiBase85Encode(compressed) #...sadly this isn't
#write in blocks of (??) 60 characters per line to a list
outstream = cStringIO.StringIO(encoded)
dataline = outstream.read(60)
while dataline <> "":
imagedata.append(dataline)
dataline = outstream.read(60)
imagedata.append('EI')
#now build the PDF for the image.
if not width:
width = imgwidth
if not height:
height = imgheight
# this says where and how big to draw it
#self._code.append('ET')
#self._code.append('q %0.4f 0 0 %0.4f %0.4f %0.4f cm' % (width, height, x, y+height))
if self.bottomup:
self._code.append('q %0.4f 0 0 %0.4f %0.4f %0.4f cm' % (width, height, x, y))
else:
# multiply height by (-1) to overcome flip in coordinate system -cwl
self._code.append('q %0.4f 0 0 %0.4f %0.4f %0.4f cm' % (width, -height, x, y+height))
self._code.extend(imagedata)
self._code.append('Q')
