#######################################################################
'''
Simple script maden by Bortoli German
this is usefull to create background with sliders
for Gnome Desktop Enviroments

It autogenerate the XML that contains the instructions

Usage: Run the script inside a folder that contain the images that you
want to make a slider.

'''
#######################################################################

############# CONFIG ##################################################
########## Time in minuts that you want to slide

minutos = 20;

########### END CONFIG ################################################
minutos = minutos * 60
minutos = str(minutos) ##Converted to seconds and string
## START OF PROGRAM ##################################################
import os, sys,mimetypes, string

cur_path = os.getcwd() #get the current filepath

cont_args = sys.argv.__len__()
# Get the pathname with the first argument if the folder doesnt exist 
# it will generate the slider from current location

if (cont_args == 2):
	if os.path.exists(sys.argv[1]):
		print "Generating images from: "+sys.argv[1]
		cur_path = sys.argv[1]
	else:
		print "The input file is not valid, generating slider from current directory ..."

files = os.listdir( cur_path ) #get the files inside the path
## EndIf

# The 3 argument is the output name of the XML file
if (cont_args == 3):
	xml_name = sys.argv[2]
else:
	xml_name = "background.xml"
	
images = [] 

for f in files:
	
	pos = mimetypes.guess_type(f)
	pos = pos[0].find('image') #get the images mymtypes
	
	if (pos >= 0):
		images.append( f ) #save all images inside image array
		
#-- EndFor

files = None #unset the variable
cont = images.__len__() #count array elements


# Create the XML body
xml_start = "<background><starttime><year>2009</year><month>08</month><day>04</day><hour>00</hour><minute>00</minute><second>00</second></starttime>"
xml_end = "</background>"
xml_content = ''

if cont != 0:
	# Start to generate the XML content
	i = 0
	
	while i < cont:
		if i < cont-1:
			xml_content += "  \t<static>\n<duration>"+minutos+"</duration>\n<file>"+cur_path+"/"+images[i]+"</file>\n</static>\n<transition>\n<duration>5.0</duration>\n<from>"+cur_path+"/"+images[i]+"</from>\n<to>"+cur_path+"/"+images[i+1]+"</to>\n</transition>\n"
		else:
			xml_content += "  \t<static>\n<duration>"+minutos+"</duration>\n<file>"+cur_path+"/"+images[i]+"</file>\n</static>\n<transition>\n<duration>5.0</duration>\n<from>"+cur_path+"/"+images[i]+"</from>\n<to>"+cur_path+"/"+images[0]+"</to>\n</transition>\n"
		i += 1
	#EndWhile
	
	print images

	xml_file = open(xml_name , "w")
	xml_file.writelines(xml_start+xml_content+xml_end)
	xml_file.close()
	
#EndIf

else:
	print "There are no images - try to find another sexy (like me) folder"