## netglance2.py
## for Python2. Python3 version at https://pastebin.com/s91KQJfh
## November 2019 by Marco Nassenstein https://nassenstein.com
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk, Gio, GdkPixbuf
from threading import Timer,Thread,Event
import urllib2
import argparse
from datetime import datetime

## Kommandozeilenparameter
parser = argparse.ArgumentParser()
parser.add_argument("-u", "--url", help="URL to an online JPG or PNG file", default="http://www.haemmern.de/live/bild.jpg")
parser.add_argument("-iw", "--width", help="Image width", default="640")
parser.add_argument("-ih", "--height", help="Image height, 0 to keep aspect ratio", default="0")
parser.add_argument("-x", "--posx", help="Horizontal position of the image on desktop in pixel", default="20")
parser.add_argument("-y", "--posy", help="Vertical position of the image on desktop in pixel", default="20")
parser.add_argument("-t", "--time", help="Refresh duration in seconds, 0 for no refresh", default="60")
args = parser.parse_args()

url = args.url
dimx = int(args.width)
dimy = int(args.height)
if dimy == 0:
	# Aspect Ratio soll eingehalten werden
	ratio = True
	dimy = dimx
else:
	ratio = False
posx = int(args.posx)
posy = int(args.posy)
seconds = int(args.time)

# URL Host als Titel des Fensters
titel = url.split("//")[-1].split("/")[0]
titel = titel.replace("www.","")
savefile = titel
# Refresh dahinter angeben
if seconds != 0:
	titel = titel+" ("+str(seconds)+"s)"

##### THREADING Subroutinen
class perpetualTimer():

	def __init__(self,t,hFunction):
		self.t=t
		self.hFunction = hFunction
		self.thread = Timer(self.t,self.handle_function)

	def handle_function(self):
		self.hFunction()
		self.thread = Timer(self.t,self.handle_function)
		self.thread.start()

	def start(self):
		self.thread.start()

	def cancel(self):
		self.thread.cancel()
##### THREADING


class Handler:

		def on_Fenster_destroy(self, *args):
			if seconds != 0:
				t.cancel()
			Gtk.main_quit()


		def on_Eventbox_button_press_event(self,widget,event):
			
			if event.button == 3:		## Rechte Maustaste, Datei-Speichern-Dialog
				print "Save Image..."
				
				dialog = Gtk.FileChooserDialog("Save Image",
						None,
						Gtk.FileChooserAction.SAVE,
						(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
						Gtk.STOCK_SAVE, Gtk.ResponseType.OK))
				dialog.set_default_size(640,480)
				dialog.set_transient_for(x.builder.get_object("Fenster"))
				zeit = datetime.now().strftime('%Y-%m-%d %H:%M')
				savfile = savefile + " " + zeit
				dialog.set_current_name(savfile+".jpg")

				response = dialog.run()

				if response == Gtk.ResponseType.OK:
					bilddatei = dialog.get_filename()
					
					if not bilddatei.endswith(".jpg") and not bilddatei.endswith(".png"):
						bilddatei += ".jpg"
						
					bild = x.builder.get_object("Bild").get_pixbuf()
					
					if bilddatei.endswith(".jpg"):
						bild.savev(bilddatei, "jpeg", ["quality"], ["100"])
					elif bilddatei.endswith(".png"):
						bild.savev(bilddatei, "png", "", "")
						
					print("...saved to "+bilddatei)

				elif response == Gtk.ResponseType.CANCEL:
					print("...cancel")

				dialog.destroy()				
				
			else:		## Irgend eine andere Taste: Manueller Refresh!
				print("Manual"),
				lauf()


class Netglance:
	def __init__(self):
		self.builder=Gtk.Builder()
		#self.builder.add_from_file("/home/nassenstein/Python/Netglance2.glade")
		self.builder.add_from_string("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<!-- Generated with glade 3.22.1 -->\n<interface>\n  <requires lib=\"gtk+\" version=\"3.20\"/>\n  <object class=\"GtkWindow\" id=\"Fenster\">\n    <property name=\"can_focus\">False</property>\n    <property name=\"title\" translatable=\"yes\">Netglance</property>\n    <property name=\"resizable\">False</property>\n    <property name=\"icon_name\">image-x-generic</property>\n    <signal name=\"destroy\" handler=\"on_Fenster_destroy\" swapped=\"no\"/>\n    <child type=\"titlebar\">\n      <placeholder/>\n    </child>\n    <child>\n      <object class=\"GtkBox\" id=\"Kiste\">\n        <property name=\"visible\">True</property>\n        <property name=\"can_focus\">False</property>\n        <property name=\"orientation\">vertical</property>\n        <child>\n          <object class=\"GtkEventBox\" id=\"Eventbox\">\n            <property name=\"visible\">True</property>\n            <property name=\"can_focus\">False</property>\n            <signal name=\"button-press-event\" handler=\"on_Eventbox_button_press_event\" swapped=\"no\"/>\n            <child>\n              <object class=\"GtkImage\" id=\"Bild\">\n                <property name=\"visible\">True</property>\n                <property name=\"can_focus\">False</property>\n                <property name=\"stock\">gtk-missing-image</property>\n              </object>\n            </child>\n          </object>\n          <packing>\n            <property name=\"expand\">True</property>\n            <property name=\"fill\">True</property>\n            <property name=\"position\">0</property>\n          </packing>\n        </child>\n      </object>\n    </child>\n  </object>\n</interface>\n")

		self.builder.connect_signals(Handler())

		window=self.builder.get_object("Fenster")

		# Fenster positionieren
		window.move(posx,posy)

		window.set_title(titel)

		window.show_all()

		print("Startup "+url+" Refresh after "+str(seconds)+" seconds")
		
		response = urllib2.urlopen(url) 
		input_stream = Gio.MemoryInputStream.new_from_data(response.read(), None) 	
		pixbuf = GdkPixbuf.Pixbuf.new_from_stream_at_scale(input_stream, dimx, dimy, ratio, None)

		self.builder.get_object("Bild").set_from_pixbuf(pixbuf)



	def main(self):
		Gtk.main()

x=Netglance()

def lauf():
		print("Refresh")
		
		response = urllib2.urlopen(url) 
		input_stream = Gio.MemoryInputStream.new_from_data(response.read(), None) 	
		pixbuf = GdkPixbuf.Pixbuf.new_from_stream_at_scale(input_stream, dimx, dimy, ratio, None)	
		
		x.builder.get_object("Bild").set_from_pixbuf(pixbuf)

if seconds != 0:
	t=perpetualTimer(seconds,lauf)
	t.start()

x.main()