#######################################################################
#
# Renderer for Enigma2
# Coded by shamann (c)2011
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
#######################################################################
from Renderer import Renderer
from enigma import eLabel, eTimer
from Components.VariableText import VariableText
from Components.config import config

class MetrixStyleTextTicker(VariableText, Renderer):

		def __init__(self):
				Renderer.__init__(self)
				VariableText.__init__(self)
				self.EmptyText = ""
				self.fillTimer = eTimer()
				self.fillTimer_conn = self.fillTimer.timeout.connect(self.__fillText)
				self.backText = ""
		
		def applySkin(self, desktop, parent):
				attribs = [ ]
				for (attrib, value) in self.skinAttributes:
						if attrib == "size":
								self.sizeX = int(value.strip().split(",")[0])
								attribs.append((attrib,value))
						elif attrib == "emptyText":
								self.EmptyText = value
						else:
								attribs.append((attrib,value))
				self.skinAttributes = attribs
				return Renderer.applySkin(self, desktop, parent)
			
		GUI_WIDGET = eLabel
		
		def connect(self, source):
				Renderer.connect(self, source)
				self.changed((self.CHANGED_DEFAULT,))
				
		def changed(self, what):
				if what[0] == self.CHANGED_CLEAR:
						self.text = ""
				else:
						self.text = self.source.text
						if self.instance and self.backText != self.text:
								if self.text == "":
										self.text = self.EmptyText
								text_width = self.instance.calculateSize().width()
								if text_width > self.sizeX:
										while (text_width > self.sizeX):
												self.text = self.text[:-1]
												text_width = self.instance.calculateSize().width()
										self.text = self.text[:-3] + "..."
								if self.backText != self.text:
										self.backText = self.text
										ena = True
										try: ena = config.plugins.setupGlass16.par30.value
										except: pass
										if ena:
												self.text = "_"	
												self.endPoint = len(self.backText)
												self.posIdx = 0
												if self.fillTimer.isActive():
														self.fillTimer.stop()
												self.fillTimer.start(400, True)
													
		def __fillText(self):
				self.fillTimer.stop()
				self.posIdx += 1
				if self.posIdx <= self.endPoint:
						self.text = self.backText[:self.posIdx] + "_"
						self.fillTimer.start(25, True)
				else:
						self.text = self.backText