class JESPrintableDocument(JESPrintable):
def __init__(self, fileToPrint):
self.fileName = fileToPrint
self.today = SimpleDateFormat("yyyy.MM.dd HH:mm").format(Date())
self.textFont = Font("Monospaced", Font.PLAIN, 12)
# We use a RandomAccessFile because Java likes to seek around and
# print pages multiple times.
self.raf = RandomAccessFile(self.fileName, "r")
# These keep track of what pages we've found so far,
# and where in the file the pages start.
# Page 0's starts out filled, and the following pages' are filled
# at the end of its predecessor.
self.pagePointers = []
self.pageAfterEnd = None
# Set the pointer for page 0.
self.pagePointers.append(self.raf.getFilePointer())
def printPage(self, g, pform, pageIndex):
if pageIndex < len(self.pagePointers):
# We already know where this page starts. Seek there.
self.raf.seek(self.pagePointers[pageIndex])
elif pageIndex >= self.pageAfterEnd:
# We've found the end, and this page is after it.
return JESPrintable.NO_SUCH_PAGE
else:
# We haven't gotten here yet.
# Java will probably print each page multiple times,
# and maybe even repeat pages after their successors,
# but it should never print page n + 1 before page n.
raise RuntimeError("Printing pages out of order")
# Find our dimensions.
minX = int(pform.getImageableX() + 10)
width = int(pform.getImageableWidth() - 10)
maxX = int(minX + width)
midX = int(minX + width / 2)
minY = int(pform.getImageableY() + 12)
height = int(pform.getImageableHeight() - 12)
maxY = int(minY + height)
x, y = minX, minY
# Title lines
g.setColor(Color.black)
# Left: filename
titleString = "JES: " + os.path.basename(self.fileName)
g.drawString(titleString, x, y)
# Center: text
pageNoString = "Page %d" % (pageIndex + 1)
pageNoWidth = g.getFontMetrics().stringWidth(pageNoString)
g.drawString(pageNoString, midX - (pageNoWidth / 2), y)
# Right: date
dateString = self.today
dateWidth = g.getFontMetrics().stringWidth(dateString)
g.drawString(dateString, maxX - dateWidth, y)
# Line below header
g.drawLine(minX, y + 6, maxX, y + 6)
# OK, now the text.
g.setColor(Color.black)
g.setFont(self.textFont)
# Generate as many lines as will fit in imageable area.
y += 24
while y + 12 < maxY:
line = self.raf.readLine()
if line is None:
# We've already printed the last line.
# Don't print another page.
self.pageAfterEnd = pageIndex + 1
return JESPrintable.PAGE_EXISTS
try:
g.drawString(line, x, y)
except:
# TBH I'm not sure what kind of exceptions happen here.
# (If the line's too long, it'll just print over the margin.)
# Unprintable characters maybe?
g.drawString(' ', x, y)
y = y + 12
if pageIndex + 1 == len(self.pagePointers):
# Hey, we've discovered the pointer to the next page!
# Let's add it to the list so the next print call works.
self.pagePointers.append(self.raf.getFilePointer())
return JESPrintable.PAGE_EXISTS
# TIFF file format can have metadata at the end after the images, so the above approach can fail
# TIFF file header is 8-bytes long:
# (See: http://paulbourke.net/dataformats/tiff/tiff_summary.pdf )
#
# Bytes 1 and 2: identifier. Either the value 4949h (II) or 4D4Dh (MM),
# meaning little-ending and big-endian, respectively.
# All data encountered past the first two bytes in the file obey
# the byte-ordering scheme indicated by the identifier field.
b1, b2 = ra.read(), ra.read() # as two java int, each one byte sized
bigEndian = chr(b1) == 'M'
parseNextInt = parseNextIntBigEndian if bigEndian else parseNextIntLittleEndian
# Bytes 3 and 4: Version: Always 42
ra.skipBytes(2)
# Bytes 5,6,7,8: IFDOffset: offset to first image file directory (IFD), the metadata entry for the first image.
firstIFDoffset = parseNextInt(ra, 4)
ra.skipBytes(firstIFDoffset - ra.getFilePointer()
) # minus the current position: all offsets are absolute
firstTags, _ = parseIFD(ra, parseNextInt)
# Correct headerSize for TIFF files (and then assuming images are contiguous and in order,
# which they don't have to be either in TIFF)
headerSize = firstTags["offset"]
# Sanity check:
if width != firstTags["width"] or height != firstTags[
"height"] or bitDepth != firstTags["samples_per_pixel"] * 8:
print "TIFF header disagrees with ChannelSeparator's parsing of metadata."
finally:
ra.close()
"""
# Try to read the header size using OME as per Curtis Rueden's suggestion
class JESPrintableDocument(JESPrintable):
def __init__(self, fileToPrint):
self.fileName = fileToPrint
self.today = SimpleDateFormat("yyyy.MM.dd HH:mm").format(Date())
self.textFont = Font("Monospaced", Font.PLAIN, 12)
# We use a RandomAccessFile because Java likes to seek around and
# print pages multiple times.
self.raf = RandomAccessFile(self.fileName, "r")
# These keep track of what pages we've found so far,
# and where in the file the pages start.
# Page 0's starts out filled, and the following pages' are filled
# at the end of its predecessor.
self.pagePointers = []
self.pageAfterEnd = None
# Set the pointer for page 0.
self.pagePointers.append(self.raf.getFilePointer())
def printPage(self, g, pform, pageIndex):
if pageIndex < len(self.pagePointers):
# We already know where this page starts. Seek there.
self.raf.seek(self.pagePointers[pageIndex])
elif pageIndex >= self.pageAfterEnd:
# We've found the end, and this page is after it.
return JESPrintable.NO_SUCH_PAGE
else:
# We haven't gotten here yet.
# Java will probably print each page multiple times,
# and maybe even repeat pages after their successors,
# but it should never print page n + 1 before page n.
raise RuntimeError("Printing pages out of order")
# Find our dimensions.
minX = int(pform.getImageableX() + 10)
width = int(pform.getImageableWidth() - 10)
maxX = int(minX + width)
midX = int(minX + width / 2)
minY = int(pform.getImageableY() + 12)
height = int(pform.getImageableHeight() - 12)
maxY = int(minY + height)
x, y = minX, minY
# Title lines
g.setColor(Color.black)
# Left: filename
titleString = "JES: " + os.path.basename(self.fileName)
g.drawString(titleString, x, y)
# Center: text
pageNoString = "Page %d" % (pageIndex + 1)
pageNoWidth = g.getFontMetrics().stringWidth(pageNoString)
g.drawString(pageNoString, midX - (pageNoWidth / 2), y)
# Right: date
dateString = self.today
dateWidth = g.getFontMetrics().stringWidth(dateString)
g.drawString(dateString, maxX - dateWidth, y)
# Line below header
g.drawLine(minX, y + 6, maxX, y + 6)
# OK, now the text.
g.setColor(Color.black)
g.setFont(self.textFont)
# Generate as many lines as will fit in imageable area.
y += 24
while y + 12 < maxY:
line = self.raf.readLine()
if line is None:
# We've already printed the last line.
# Don't print another page.
self.pageAfterEnd = pageIndex + 1
return JESPrintable.PAGE_EXISTS
try:
g.drawString(line, x, y)
except:
# TBH I'm not sure what kind of exceptions happen here.
# (If the line's too long, it'll just print over the margin.)
# Unprintable characters maybe?
g.drawString(' ', x, y)
y = y + 12
if pageIndex + 1 == len(self.pagePointers):
# Hey, we've discovered the pointer to the next page!
# Let's add it to the list so the next print call works.
self.pagePointers.append(self.raf.getFilePointer())
return JESPrintable.PAGE_EXISTS
