[Pycodeocr-main] SF.net SVN: pycodeocr:[21] PyCodeOCR.py

[<la...@us...>]

Revision: 21
          http://pycodeocr.svn.sourceforge.net/pycodeocr/?rev=21&view=rev
Author:   laserb
Date:     2010-09-07 14:29:34 +0000 (Tue, 07 Sep 2010)

Log Message:
-----------
change sensitivity if option is not available / select file input if a file is opened / show image for other than barcode too / some errorhandling for sane (don't crash if no device is found / possibility to restart / possibility to select printer in commandline if an argument is given)

Modified Paths:
--------------
    PyCodeOCR.py

Modified: PyCodeOCR.py
===================================================================
--- PyCodeOCR.py	2010-09-07 14:24:34 UTC (rev 20)
+++ PyCodeOCR.py	2010-09-07 14:29:34 UTC (rev 21)
@@ -53,7 +53,6 @@
                     "A4":      ((   0,   0, 296, 215 ),   0), }		# scan whole range (A4: http://www.cl.cam.ac.uk/~mgk25/iso-paper.html)
                     #"A4":      ((   0,   0, 290, 210 ),   0), }		# (more secure; with small border)
 
-
 # MainWindow
 # The GUI was created/designed using GLADE
 #
@@ -94,10 +93,13 @@
 		self.xml		= gtk.glade.XML(self.gladefile)
 		self.window1		= self.xml.get_widget('window1')
 		self.togglebutton1	= self.xml.get_widget('togglebutton1')
+		self.button1		= self.xml.get_widget('button1')
 		self.button2		= self.xml.get_widget('button2')
+		self.frame1		= self.xml.get_widget('frame1')
 		self.image1		= self.xml.get_widget('image1')
 		self.entry1		= self.xml.get_widget('entry1')
 		self.progressbar1	= self.xml.get_widget('progressbar1')
+		self.label5		= self.xml.get_widget('label5')
 		self.combobox1		= self.xml.get_widget('combobox1')
 		self.combobox2		= self.xml.get_widget('combobox2')
 		self.spinbutton1        = self.xml.get_widget('spinbutton1')
@@ -124,19 +126,37 @@
 		if "pdf417decode" not in pakages:
 			self.combobox2.remove_text(3)
 			self.combobox2.insert_text(3, "< not installed >")
-		self.radiobutton2.set_active(True)
-		self.on_radiobutton1_toggled()
+		#self.on_radiobutton1_toggled()
+		
 
 		# connect signal handlers
 		self.xml.signal_autoconnect( self )
-
+		
 		# take some time to init sane
-		self.run_sane = RunSANE()
-
+		self.init_sane()
+		
 		# display window
 		self.window1.show()
 
 		return
+	
+	def init_sane(self, source=None):
+		self.run_sane = RunSANE()
+		
+		if self.run_sane.found_scanner:
+			self.radiobutton2.set_active(True)
+			self.radiobutton2.set_sensitive(True)
+		else:
+			self.radiobutton1.set_active(True)
+			self.radiobutton2.set_sensitive(False)
+			self.on_radiobutton1_toggled()
+			self.progressbar1.set_text("No sane device found.")
+			self.button1.set_visible(True)
+		
+		#Try to set orientation and placement sensitive. Will fail if no device is found
+		self.toggle_orientation_sensitive(True)
+		self.toggle_placement_sensitive(True)
+			
 
 	def run(self):
 		""" Run gtk mainloop and with it THIS APP. """
@@ -159,6 +179,21 @@
 		self.spinbutton4.set_value(std_scan_koords[orient][0][3])
 
 		self.mode = std_scan_koords[orient][1]
+		
+	def on_combobox2_changed(self, source=None):
+		op_mode     = self.combobox2.get_active()
+		if	(op_mode == self.MDE['invoices']):
+			self.toggle_placement_sensitive(True)
+			self.toggle_orientation_sensitive(True)
+		elif	(op_mode == self.MDE['barcode']):
+			self.toggle_placement_sensitive(False)
+			self.toggle_orientation_sensitive(True)
+		elif	(op_mode == self.MDE['DataMatrix']):
+			self.toggle_placement_sensitive(False)
+			self.toggle_orientation_sensitive(False)
+		elif	(op_mode == self.MDE['PDF417']):
+			self.toggle_placement_sensitive(True)
+			self.toggle_orientation_sensitive(True)
 
 	def on_togglebutton1_toggled(self, source=None, event=None, *a):
 		""" ToggleButton: 'scan'/'stop'. """
@@ -189,19 +224,40 @@
 			self.refresh()
 		return
 
+		
+	def on_button1_clicked(self, source=None, event=None):
+		""" Button: 'exit'. """
+		os.execv(sys.argv[0],sys.argv)
+		self.on_window1_destroy()
+		
 	def on_button2_clicked(self, source=None, event=None):
 		""" Button: 'exit'. """
 		self.on_window1_destroy()
-
+	
 	def on_window1_destroy(self, source=None, event=None):
 		""" Window closed signal handler. """
 		gtk.main_quit()
 
 	def on_radiobutton1_toggled(self, source=None, event=None):
-		self.filechooserbutton1.set_sensitive( self.radiobutton1.get_active() )
+		#self.filechooserbutton1.set_sensitive( self.radiobutton1.get_active() )
+		self.on_combobox2_changed()
+				
+	def on_radiobutton2_toggled(self, source=None, event=None):
+		self.on_combobox2_changed()
+	
+	def on_filechooserbutton1_file_set(self, source=None):
+		self.radiobutton1.set_active(True)
 
-	#def on_radiobutton2_toggled(self, source=None, event=None):
-	#	pass
+			
+	def toggle_orientation_sensitive(self, value):
+		self.label5.set_sensitive(value)
+		self.combobox1.set_sensitive(value)
+			
+	def toggle_placement_sensitive(self, value):
+		if self.radiobutton2.get_active():
+			self.frame1.set_sensitive(value)
+		else:
+			self.frame1.set_sensitive(False)
 
 	# helpers
 	#	
@@ -290,8 +346,8 @@
 		if self.run_convert():
 			self.progress(0., self.run_convert.stderr[:-1])
 			return None			
-		if	(op_mode == self.MDE['invoices']):	# 0: invoices
-			self.setimage( self.temp+opt['tmp_file'] )
+		#if	(op_mode == self.MDE['invoices']):	# 0: invoices
+		self.setimage( self.temp+opt['tmp_file'] )
 		if source_mode:			# SANE scanning interface
 			os.remove(inp_file)			# clean-up
 		del self.run_convert
@@ -440,15 +496,33 @@
 		# free from: http://www.pythonware.com/products/pil/index.htm
 		# tested with Python24 vegaseat 11oct2005
 		# open an image file (.bmp,.jpg,.png,.gif) you have in the working folder
-		im1 = Image.open(imageFile)
-		# adjust width and height to your needs
-		(width, height) = self.image1.get_size_request()
+		print imageFile[-3:]
+		if imageFile[-3:] in ["bmp","jpg","png","gif"]:
+			print "already in right format"			
+			im1 = Image.open(imageFile)
+		else:
+			print "convert Image"
+			self.run_convert = RunExternal(self.cmd_convert % (imageFile, 0, self.temp+"04.jpg"), error_msg=[ "convert: unable to open image" ])
+			if self.run_convert():
+				self.progress(0., self.run_convert.stderr[:-1])
+				return None		
+			im1 = Image.open(self.temp+"04.jpg")
+			
+		# adjust width and height to your needs and keep ratio
+		(im_width, im_height) = im1.size 	#get image size
+		(width, height) = self.image1.get_size_request() #get needed size
+		ratio = min(float(width)/im_width,float(height)/im_height) #calculate resizing ratio
+		new_width = int(im_width*ratio)
+		new_height = int(im_height*ratio)
+		
 		# use one of these filter options to resize the image
-		#im = im1.resize((width, height), Image.NEAREST) # use nearest neighbour
-		im = im1.resize((width, height), Image.BILINEAR) # linear interpolation in a 2x2 environment
-		#im = im1.resize((width, height), Image.BICUBIC) # cubic spline interpolation in a 4x4 environment
-		#im = im1.resize((width, height), Image.ANTIALIAS) # best down-sizing filter
+		
+		#im = im1.resize((new_width, new_height), Image.NEAREST) # use nearest neighbour
+		im = im1.resize((new_width, new_height), Image.BILINEAR) # linear interpolation in a 2x2 environment
+		#im = im1.resize((new_width, new_height), Image.BICUBIC) # cubic spline interpolation in a 4x4 environment
+		#im = im1.resize((new_width, new_height), Image.ANTIALIAS) # best down-sizing filter
 		#ext = ".jpg"
+		
 		image_file = self.temp+"04.jpg"
 		im.save( image_file )
 		self.image1.set_from_file( image_file )
@@ -643,21 +717,37 @@
 		#sys.path.append('.')
 
 		# init SANE
-		self.version = sane.init()
-		self.devices = sane.get_devices()
-		self.dev     = sane.get_devices()[0][0]	# choose first device
+		try:
+			devnr = 0
+			self.version = sane.init()
+			self.devices = sane.get_devices()
+			print "\n"
+			for i in range(len(self.devices)):
+				print str(i)+": "+self.devices[i][1]+" "+self.devices[i][2]
+			if len(self.devices) > 1 and sys.argv[1:]:
+				devnr = raw_input("Choose device: ")
+				
+			self.dev     = sane.get_devices()[devnr][0]	# choose first device
+		
+			# open scanner device
+			self.scanner = sane.open(self.dev)
+			self.params  = self.scanner.get_parameters()
+			self.opts    = self.scanner.get_options()
+			
+			self.found_scanner = True
+			
+			print "done."
+		
+		except:
+			self.found_scanner = False
+			print "No sane device found."
+		
 
-		# open scanner device
-		self.scanner = sane.open(self.dev)
-		self.params  = self.scanner.get_parameters()
-		self.opts    = self.scanner.get_options()
-
-		print "done."
-
 	def post_init(self, coords, out_filename):
 		""" Not init of sane and scanner, but of scan operation. """
 		self.coords       = coords
 		self.out_filename = out_filename
+		self.info()
 
 	def __call__(self):
 		(self.error, self.stdout, self.stderr) = self._run()
@@ -696,11 +786,11 @@
 		""" Show some info about the scanner and SANE. """
 		print 'SANE version:', self.version
 		print 'Available devices=', self.devices
-		print 'Selected device=', self.dev#, "\n"
+		print 'Selected device=', self.dev #, "\n"
 
 		print 'SaneDev object=', self.scanner
 		print 'Device parameters:', self.params
-		print 'Device options:', "\n".join(self.opts)
+		#print 'Device options:', "\n",self.opts
 
 
 


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