skin.py

import errno
import xml.etree.cElementTree

from boxbranding import getBoxType
from enigma import addFont, eLabel, ePixmap, ePoint, eRect, eSize, eWindow, eWindowStyleManager, eWindowStyleSkinned, getDesktop, gFont, getFontFaces, gRGB
from os import listdir, path, unlink
from os.path import basename, dirname, isfile, join as pathjoin

from Components.config import ConfigSubsection, ConfigText, config
from Components.RcModel import rc_model
from Components.Sources.Source import ObsoleteSource
from Components.SystemInfo import SystemInfo
from Tools.Directories import SCOPE_CONFIG, SCOPE_CURRENT_LCDSKIN, SCOPE_CURRENT_SKIN, SCOPE_FONTS, SCOPE_SKIN, SCOPE_SKIN_IMAGE, pathExists, resolveFilename
from Tools.Import import my_import
from Tools.LoadPixmap import LoadPixmap

DEFAULT_SKIN = "slyk-q-1080/skin.xml"
EMERGENCY_SKIN = "skin_default.xml"
DEFAULT_DISPLAY_SKIN = "skin_display_grautec.xml" if SystemInfo["grautec"] else "skin_display.xml"
USER_SKIN = "skin_user.xml"
USER_SKIN_TEMPLATE = "skin_user_%s.xml"
SUBTITLE_SKIN = "skin_subtitles.xml"

GUI_SKIN_ID = 0  # Main frame-buffer.
DISPLAY_SKIN_ID = 2 if getBoxType().startswith("dm") else 1  # Front panel / display / LCD.

domScreens = {}  # Dictionary of skin based screens.
colors = {  # Dictionary of skin color names.
	"key_back": gRGB(0x00313131),
	"key_blue": gRGB(0x0018188b),
	"key_green": gRGB(0x001f771f),
	"key_red": gRGB(0x009f1313),
	"key_text": gRGB(0x00ffffff),
	"key_yellow": gRGB(0x00a08500)
}
fonts = {  # Dictionary of predefined and skin defined font aliases.
	"Body": ("Regular", 18, 22, 16),
	"ChoiceList": ("Regular", 20, 24, 18)
}
menus = {}  # Dictionary of images associated with menu entries.
parameters = {}  # Dictionary of skin parameters used to modify code behavior.
setups = {}  # Dictionary of images associated with setup menus.
switchPixmap = {}  # Dictionary of switch images.
windowStyles = {}  # Dictionary of window styles for each screen ID.
constantWidgets = {}
variables = {}
isVTISkin = False  # Temporary flag to suppress errors in OpenATV.

config.skin = ConfigSubsection()
skin = resolveFilename(SCOPE_SKIN, DEFAULT_SKIN)
if not isfile(skin):
	print "[Skin] Error: Default skin '%s' is not readable or is not a file!  Using emergency skin." % skin
	DEFAULT_SKIN = EMERGENCY_SKIN
config.skin.primary_skin = ConfigText(default=DEFAULT_SKIN)
config.skin.display_skin = ConfigText(default=DEFAULT_DISPLAY_SKIN)

currentPrimarySkin = None
currentDisplaySkin = None
callbacks = []
runCallbacks = False

# Skins are loaded in order of priority.  Skin with highest priority is
# loaded last.  This is usually the user-specified skin.  In this way
# any duplicated screens will be replaced by a screen of the same name
# with a higher priority.
#
# GUI skins are saved in the settings file as the path relative to
# SCOPE_SKIN.  The full path is NOT saved.  E.g. "MySkin/skin.xml"
#
# Display skins are saved in the settings file as the path relative to
# SCOPE_CURRENT_LCDSKIN.  The full path is NOT saved.
# E.g. "MySkin/skin_display.xml"
#
def InitSkins():
	global currentPrimarySkin, currentDisplaySkin
	##################################################################################################
	if isfile('/etc/.restore_skins'):
		unlink('/etc/.restore_skins')
		import glob
		lastpath = ''
		for skin in sorted(glob.glob('/usr/lib/enigma2/python/Plugins/Extensions/*/ActivateSkinSettings.py*')):
			try:
				print '[RESTORE_SKIN] restore skin from "%s" ...' % skin
				skinpath, ext = path.splitext(skin)
				if skinpath == lastpath or not ext in '.pyo':
					print '[RESTORE_SKIN] ...skip!'
					continue
				lastpath = skinpath
				if getattr(__import__(skin.replace('/usr/lib/enigma2/python/','').replace(ext,'').replace('/','.'), fromlist=['ActivateSkinSettings']), 'ActivateSkinSettings')().WriteSkin(True):
					print '[RESTORE_SKIN] ... failed!'
				else:
					print '[RESTORE_SKIN] ... done!'
			except Exception, err:
				print '[RESTORE_SKIN] ...error occurred: ', err
	##################################################################################################
	runCallbacks = False
	# Add the emergency skin.  This skin should provide enough functionality
	# to enable basic GUI functions to work.
	loadSkin(EMERGENCY_SKIN, scope=SCOPE_CURRENT_SKIN, desktop=getDesktop(GUI_SKIN_ID), screenID=GUI_SKIN_ID)
	# Add the subtitle skin.
	loadSkin(SUBTITLE_SKIN, scope=SCOPE_CURRENT_SKIN, desktop=getDesktop(GUI_SKIN_ID), screenID=GUI_SKIN_ID)
	# Add the main GUI skin.
	result = []
	for skin, name in [(config.skin.primary_skin.value, "current"), (DEFAULT_SKIN, "default")]:
		if skin in result:  # Don't try to add a skin that has already failed.
			continue
		config.skin.primary_skin.value = skin
		if loadSkin(config.skin.primary_skin.value, scope=SCOPE_CURRENT_SKIN, desktop=getDesktop(GUI_SKIN_ID), screenID=GUI_SKIN_ID):
			currentPrimarySkin = config.skin.primary_skin.value
			break
		print "[Skin] Error: Adding %s GUI skin '%s' has failed!" % (name, config.skin.primary_skin.value)
		result.append(skin)
	# Add the front panel / display / lcd skin.
	result = []
	for skin, name in [(config.skin.display_skin.value, "current"), (DEFAULT_DISPLAY_SKIN, "default")]:
		if skin in result:  # Don't try to add a skin that has already failed.
			continue
		config.skin.display_skin.value = skin
		if loadSkin(config.skin.display_skin.value, scope=SCOPE_CURRENT_LCDSKIN, desktop=getDesktop(DISPLAY_SKIN_ID), screenID=DISPLAY_SKIN_ID):
			currentDisplaySkin = config.skin.display_skin.value
			break
		print "[Skin] Error: Adding %s display skin '%s' has failed!" % (name, config.skin.display_skin.value)
		result.append(skin)
	# Add the activated optional skin parts.
	partsDir = resolveFilename(SCOPE_CURRENT_SKIN, pathjoin(dirname(currentPrimarySkin), "mySkin", ""))
	if pathExists(partsDir) and currentPrimarySkin != DEFAULT_SKIN:
		for file in sorted(listdir(partsDir)):
			if file.startswith("skin_") and file.endswith(".xml"):
				partsFile = pathjoin(partsDir, file)
				if not loadSkin(partsFile, scope=SCOPE_CURRENT_SKIN, desktop=getDesktop(GUI_SKIN_ID), screenID=GUI_SKIN_ID):
					print "[Skin] Error: Failed to load modular skin file '%s'!" % partsFile
	# Add an optional skin related user skin "user_skin_<SkinName>.xml".  If there is
	# not a skin related user skin then try to add am optional generic user skin.
	result = None
	if isfile(resolveFilename(SCOPE_SKIN, config.skin.primary_skin.value)):
		name = USER_SKIN_TEMPLATE % dirname(config.skin.primary_skin.value)
		if isfile(resolveFilename(SCOPE_CURRENT_SKIN, name)):
			result = loadSkin(name, scope=SCOPE_CURRENT_SKIN, desktop=getDesktop(GUI_SKIN_ID), screenID=GUI_SKIN_ID)
	if result is None:
		loadSkin(USER_SKIN, scope=SCOPE_CURRENT_SKIN, desktop=getDesktop(GUI_SKIN_ID), screenID=GUI_SKIN_ID)
	runCallbacks = True

# Temporary entry point for older versions of mytest.py.
#
def loadSkinData(desktop):
	InitSkins()

# Method to load a skin XML file into the skin data structures.
#
def loadSkin(filename, scope=SCOPE_SKIN, desktop=getDesktop(GUI_SKIN_ID), screenID=GUI_SKIN_ID):
	global windowStyles
	filename = resolveFilename(scope, filename)
	print "[Skin] Loading skin file '%s'." % filename
	try:
		with open(filename, "r") as fd:  # This open gets around a possible file handle leak in Python's XML parser.
			try:
				domSkin = xml.etree.cElementTree.parse(fd).getroot()
				# print "[Skin] DEBUG: Extracting non screen blocks from '%s'.  (scope='%s')" % (filename, scope)
				# For loadSingleSkinData colors, bordersets etc. are applied one after
				# the other in order of ascending priority.
				loadSingleSkinData(desktop, screenID, domSkin, filename, scope=scope)
				for element in domSkin:
					if element.tag == "screen":  # Process all screen elements.
						name = element.attrib.get("name", None)
						if name:  # Without a name, it's useless!
							sid = element.attrib.get("id", None)
							if sid is None or sid == screenID:  # If there is a screen ID is it for this display.
								# print "[Skin] DEBUG: Extracting screen '%s' from '%s'.  (scope='%s')" % (name, filename, scope)
								domScreens[name] = (element, "%s/" % dirname(filename))
					elif element.tag == "windowstyle":  # Process the windowstyle element.
						id = element.attrib.get("id", None)
						if id is not None:  # Without an id, it is useless!
							id = int(id)
							# print "[Skin] DEBUG: Processing a windowstyle ID='%s'." % id
							domStyle = xml.etree.cElementTree.ElementTree(xml.etree.cElementTree.Element("skin"))
							domStyle.getroot().append(element)
							windowStyles[id] = (desktop, screenID, domStyle, filename, scope)
					# Element is not a screen or windowstyle element so no need for it any longer.
				reloadWindowStyles()  # Reload the window style to ensure all skin changes are taken into account.
				print "[Skin] Loading skin file '%s' complete." % filename
				if runCallbacks:
					for method in self.callbacks:
						if method:
							method()
				return True
			except xml.etree.cElementTree.ParseError as err:
				fd.seek(0)
				content = fd.readlines()
				line, column = err.position
				print "[Skin] XML Parse Error: '%s' in '%s'!" % (err, filename)
				data = content[line - 1].replace("\t", " ").rstrip()
				print "[Skin] XML Parse Error: '%s'" % data
				print "[Skin] XML Parse Error: '%s^%s'" % ("-" * column, " " * (len(data) - column - 1))
			except Exception as err:
				print "[Skin] Error: Unable to parse skin data in '%s' - '%s'!" % (filename, err)
	except (IOError, OSError) as err:
		if err.errno == errno.ENOENT:  # No such file or directory
			print "[Skin] Warning: Skin file '%s' does not exist!" % filename
		else:
			print "[Skin] Error %d: Opening skin file '%s'! (%s)" % (err.errno, filename, err.strerror)
	except Exception as err:
		print "[Skin] Error: Unexpected error opening skin file '%s'! (%s)" % (filename, err)
	return False

def reloadSkins():
	domScreens.clear()
	colors.clear()
	colors = {
		"key_back": gRGB(0x00313131),
		"key_blue": gRGB(0x0018188b),
		"key_green": gRGB(0x001f771f),
		"key_red": gRGB(0x009f1313),
		"key_text": gRGB(0x00ffffff),
		"key_yellow": gRGB(0x00a08500)
	}
	fonts.clear()
	fonts = {
		"Body": ("Regular", 18, 22, 16),
		"ChoiceList": ("Regular", 20, 24, 18)
	}
	menus.clear()
	parameters.clear()
	setups.clear()
	switchPixmap.clear()
	InitSkins()

def addCallback(callback):
	if callback not in callbacks:
		callbacks.append(callback)

def removeCallback(callback):
	if callback in self.callbacks:
		callbacks.remove(callback)


class SkinError(Exception):
	def __init__(self, message):
		self.msg = message

	def __str__(self):
		return "[Skin] {%s}: %s!  Please contact the skin's author!" % (config.skin.primary_skin.value, self.msg)

# Convert a coordinate string into a number.  Used to convert object position and
# size attributes into a number.
#    s is the input string.
#    e is the the parent object size to do relative calculations on parent
#    size is the size of the object size (e.g. width or height)
#    font is a font object to calculate relative to font sizes
# Note some constructs for speeding up simple cases that are very common.
#
# Can do things like:  10+center-10w+4%
# To center the widget on the parent widget,
#    but move forward 10 pixels and 4% of parent width
#    and 10 character widths backward
# Multiplication, division and subexpressions are also allowed: 3*(e-c/2)
#
# Usage:  center : Center the object on parent based on parent size and object size.
#         e      : Take the parent size/width.
#         c      : Take the center point of parent size/width.
#         %      : Take given percentage of parent size/width.
#         w      : Multiply by current font width.
#         h      : Multiply by current font height.
#
def parseCoordinate(s, e, size=0, font=None):
	s = s.strip()
	if s == "center":  # For speed as this can be common case.
		val = 0 if not size else (e - size) / 2
	elif s == "*":
		return None
	else:
		try:
			val = int(s)  # For speed try a simple number first.
		except ValueError:
			if "t" in s:
				s = s.replace("center", str((e - size) / 2.0))
			if "e" in s:
				s = s.replace("e", str(e))
			if "c" in s:
				s = s.replace("c", str(e / 2.0))
			if "w" in s:
				s = s.replace("w", "*%s" % str(fonts[font][3]))
			if "h" in s:
				s = s.replace("h", "*%s" % str(fonts[font][2]))
			if "%" in s:
				s = s.replace("%", "*%s" % str(e / 100.0))
			try:
				val = int(s)  # For speed try a simple number first.
			except ValueError:
				val = int(eval(s))
	# print "[Skin] DEBUG: parseCoordinate s='%s', e='%s', size=%s, font='%s', val='%s'." % (s, e, size, font, val)
	if val < 0:
		val = 0
	return val

def getParentSize(object, desktop):
	if object:
		parent = object.getParent()
		# For some widgets (e.g. ScrollLabel) the skin attributes are applied to a
		# child widget, instead of to the widget itself.  In that case, the parent
		# we have here is not the real parent, but it is the main widget.  We have
		# to go one level higher to get the actual parent.  We can detect this
		# because the 'parent' will not have a size yet.  (The main widget's size
		# will be calculated internally, as soon as the child widget has parsed the
		# skin attributes.)
		if parent and parent.size().isEmpty():
			parent = parent.getParent()
		if parent:
			return parent.size()
		elif desktop:
			return desktop.size()  # Widget has no parent, use desktop size instead for relative coordinates.
	return eSize()

def parseValuePair(s, scale, object=None, desktop=None, size=None):
	if s in variables:
		s = variables[s]
	x, y = s.split(",")
	parentsize = eSize()
	if object and ("c" in x or "c" in y or "e" in x or "e" in y or "%" in x or "%" in y):  # Need parent size for ce%
		parentsize = getParentSize(object, desktop)
	xval = parseCoordinate(x, parentsize.width(), size and size.width() or 0)
	yval = parseCoordinate(y, parentsize.height(), size and size.height() or 0)
	return (xval * scale[0][0] / scale[0][1], yval * scale[1][0] / scale[1][1])

def parsePosition(s, scale, object=None, desktop=None, size=None):
	return ePoint(*parseValuePair(s, scale, object, desktop, size))

def parseSize(s, scale, object=None, desktop=None):
	return eSize(*parseValuePair(s, scale, object, desktop))

def parseFont(s, scale=((1, 1), (1, 1))):
	if ";" in s:
		name, size = s.split(";")
	else:
		name = s
		size = None
	try:
		f = fonts[name]
		name = f[0]
		size = f[1] if size is None else size
	except KeyError:
		if name not in getFontFaces():
			f = fonts["Body"]
			print "[Skin] Error: Font '%s' (in '%s') is not defined!  Using 'Body' font ('%s') instead." % (name, s, f[0])
			name = f[0]
			size = f[1] if size is None else size
	return gFont(name, int(size) * scale[0][0] / scale[0][1])

def parseColor(s):
	if s[0] != "#":
		try:
			return colors[s]
		except KeyError:
			raise SkinError("Color '%s' must be #aarrggbb or valid named color" % s)
	return gRGB(int(s[1:], 0x10))

def parseParameter(s):
	"""This function is responsible for parsing parameters in the skin, it can parse integers, floats, hex colors, hex integers, named colors, fonts and strings."""
	if s[0] == "*":  # String.
		return s[1:]
	elif s[0] == "#":  # HEX Color.
		return int(s[1:], 16)
	elif s[:2] == "0x":  # HEX Integer.
		return int(s, 16)
	elif "." in s:  # Float number.
		return float(s)
	elif s in colors:  # Named color.
		return colors[s].argb()
	elif s.find(";") != -1:  # Font.
		font, size = [x.strip() for x in s.split(";", 1)]
		return [font, int(size)]
	else:  # Integer.
		return int(s)

def loadPixmap(path, desktop):
	option = path.find("#")
	if option != -1:
		path = path[:option]
	if rc_model.rcIsDefault() is False and basename(path) in ("rc.png", "rc0.png", "rc1.png", "rc2.png", "oldrc.png"):
		path = rc_model.getRcImg()
	pixmap = LoadPixmap(path, desktop)
	if pixmap is None:
		raise SkinError("Pixmap file '%s' not found" % path)
	return pixmap

def collectAttributes(skinAttributes, node, context, skinPath=None, ignore=(), filenames=frozenset(("pixmap", "pointer", "seek_pointer", "backgroundPixmap", "selectionPixmap", "sliderPixmap", "scrollbarSliderPicture", "scrollbarbackgroundPixmap", "scrollbarBackgroundPicture"))):
	size = None
	pos = None
	font = None
	for attrib, value in node.items():  # Walk all attributes.
		if attrib not in ignore:
			if attrib in filenames:
				# DEBUG: Why does a SCOPE_CURRENT_LCDSKIN image replace the GUI image?!?!?!
				pngfile = resolveFilename(SCOPE_CURRENT_SKIN, value, path_prefix=skinPath)
				if not isfile(pngfile) and isfile(resolveFilename(SCOPE_CURRENT_LCDSKIN, value, path_prefix=skinPath)):
					pngfile = resolveFilename(SCOPE_CURRENT_LCDSKIN, value, path_prefix=skinPath)
				value = pngfile
			# Bit of a hack this, really.  When a window has a flag (e.g. wfNoBorder)
			# it needs to be set at least before the size is set, in order for the
			# window dimensions to be calculated correctly in all situations.
			# If wfNoBorder is applied after the size has been set, the window will
			# fail to clear the title area.  Similar situation for a scrollbar in a
			# listbox; when the scrollbar setting is applied after the size, a scrollbar
			# will not be shown until the selection moves for the first time.
			if attrib == "size":
				size = value.encode("utf-8")
			elif attrib == "position":
				pos = value.encode("utf-8")
			elif attrib == "font":
				font = value.encode("utf-8")
				skinAttributes.append((attrib, font))
			else:
				skinAttributes.append((attrib, value.encode("utf-8")))
	if pos is not None:
		pos, size = context.parse(pos, size, font)
		skinAttributes.append(("position", pos))
	if size is not None:
		skinAttributes.append(("size", size))


class AttributeParser:
	def __init__(self, guiObject, desktop, scale=((1, 1), (1, 1))):
		self.guiObject = guiObject
		self.desktop = desktop
		self.scaleTuple = scale

	def applyOne(self, attrib, value):
		try:
			getattr(self, attrib)(value)
		except AttributeError:
			print "[Skin] Attribute '%s' (with value of '%s') in object of type '%s' is not implemented!" % (attrib, value, self.guiObject.__class__.__name__)
		except SkinError as err:
			print "[Skin] Error:", err
		except Exception:
			print "[Skin] Attribute '%s' with wrong (or unknown) value '%s' in object of type '%s'!" % (attrib, value, self.guiObject.__class__.__name__)

	def applyAll(self, attrs):
		for attrib, value in attrs:
			self.applyOne(attrib, value)

	def conditional(self, value):
		pass

	def objectTypes(self, value):
		pass

	def position(self, value):
		if isinstance(value, tuple):
			self.guiObject.move(ePoint(*value))
		else:
			self.guiObject.move(parsePosition(value, self.scaleTuple, self.guiObject, self.desktop, self.guiObject.csize()))

	def size(self, value):
		if isinstance(value, tuple):
			self.guiObject.resize(eSize(*value))
		else:
			self.guiObject.resize(parseSize(value, self.scaleTuple, self.guiObject, self.desktop))

	def animationPaused(self, value):
		pass

	def animationMode(self, value):
		try:
			self.guiObject.setAnimationMode({
				"disable": 0x00,
				"off": 0x00,
				"offshow": 0x10,
				"offhide": 0x01,
				"onshow": 0x01,
				"onhide": 0x10,
				"disable_onshow": 0x10,
				"disable_onhide": 0x01
			}[value])
		except KeyError:
			print "[Skin] Error: Invalid animationMode '%s'!  Must be one of 'disable', 'off', 'offshow', 'offhide', 'onshow' or 'onhide'." % value

	def title(self, value):
		self.guiObject.setTitle(_(value))

	def text(self, value):
		self.guiObject.setText(_(value))

	def font(self, value):
		self.guiObject.setFont(parseFont(value, self.scaleTuple))

	def secondfont(self, value):
		self.guiObject.setSecondFont(parseFont(value, self.scaleTuple))

	def zPosition(self, value):
		self.guiObject.setZPosition(int(value))

	def itemHeight(self, value):
		self.guiObject.setItemHeight(int(value))

	def pixmap(self, value):
		self.guiObject.setPixmap(loadPixmap(value, self.desktop))

	def backgroundPixmap(self, value):
		self.guiObject.setBackgroundPicture(loadPixmap(value, self.desktop))

	def selectionPixmap(self, value):
		self.guiObject.setSelectionPicture(loadPixmap(value, self.desktop))

	def sliderPixmap(self, value):
		self.guiObject.setSliderPicture(loadPixmap(value, self.desktop))

	def scrollbarbackgroundPixmap(self, value):
		self.guiObject.setScrollbarBackgroundPicture(loadPixmap(value, self.desktop))

	def scrollbarSliderPicture(self, value):  # For compatibility same as sliderPixmap.
		self.guiObject.setSliderPicture(loadPixmap(value, self.desktop))

	def scrollbarBackgroundPicture(self, value):  # For compatibility same as scrollbarbackgroundPixmap.
		self.guiObject.setScrollbarBackgroundPicture(loadPixmap(value, self.desktop))

	def alphatest(self, value):
		try:
			self.guiObject.setAlphatest({
				"on": 1,
				"off": 0,
				"blend": 2
			}[value])
		except KeyError:
			print "[Skin] Error: Invalid alphatest '%s'!  Must be one of 'on', 'off' or 'blend'." % value

	def scale(self, value):
		value = 1 if value.lower() in ("1", "enabled", "on", "scale", "true", "yes") else 0
		self.guiObject.setScale(value)

	def orientation(self, value):  # Used by eSlider.
		try:
			self.guiObject.setOrientation(*{
				"orVertical": (self.guiObject.orVertical, False),
				"orTopToBottom": (self.guiObject.orVertical, False),
				"orBottomToTop": (self.guiObject.orVertical, True),
				"orHorizontal": (self.guiObject.orHorizontal, False),
				"orLeftToRight": (self.guiObject.orHorizontal, False),
				"orRightToLeft": (self.guiObject.orHorizontal, True)
			}[value])
		except KeyError:
			print "[Skin] Error: Invalid orientation '%s'!  Must be one of 'orVertical', 'orTopToBottom', 'orBottomToTop', 'orHorizontal', 'orLeftToRight' or 'orRightToLeft'." % value

	def valign(self, value):
		try:
			self.guiObject.setVAlign({
				"top": self.guiObject.alignTop,
				"center": self.guiObject.alignCenter,
				"bottom": self.guiObject.alignBottom
			}[value])
		except KeyError:
			print "[Skin] Error: Invalid valign '%s'!  Must be one of 'top', 'center' or 'bottom'." % value

	def halign(self, value):
		try:
			self.guiObject.setHAlign({
				"left": self.guiObject.alignLeft,
				"center": self.guiObject.alignCenter,
				"right": self.guiObject.alignRight,
				"block": self.guiObject.alignBlock
			}[value])
		except KeyError:
			print "[Skin] Error: Invalid halign '%s'!  Must be one of 'left', 'center', 'right' or 'block'." % value

	def textOffset(self, value):
		if value in variables:
			value = variables[value]
		x, y = value.split(",")
		self.guiObject.setTextOffset(ePoint(int(x) * self.scaleTuple[0][0] / self.scaleTuple[0][1], int(y) * self.scaleTuple[1][0] / self.scaleTuple[1][1]))

	def flags(self, value):
		if value in variables:
			value = variables[value]
		flags = value.split(",")
		for f in flags:
			try:
				fv = eWindow.__dict__[f]
				self.guiObject.setFlag(fv)
			except KeyError:
				print "[Skin] Error: Invalid flag '%s'!" % f

	def backgroundColor(self, value):
		self.guiObject.setBackgroundColor(parseColor(value))

	def backgroundColorSelected(self, value):
		self.guiObject.setBackgroundColorSelected(parseColor(value))

	def foregroundColor(self, value):
		self.guiObject.setForegroundColor(parseColor(value))

	def foregroundColorSelected(self, value):
		self.guiObject.setForegroundColorSelected(parseColor(value))

	def foregroundNotCrypted(self, value):
		self.guiObject.setForegroundColor(parseColor(value))

	def backgroundNotCrypted(self, value):
		self.guiObject.setBackgroundColor(parseColor(value))

	def foregroundCrypted(self, value):
		self.guiObject.setForegroundColor(parseColor(value))

	def backgroundCrypted(self, value):
		self.guiObject.setBackgroundColor(parseColor(value))

	def foregroundEncrypted(self, value):
		self.guiObject.setForegroundColor(parseColor(value))

	def backgroundEncrypted(self, value):
		self.guiObject.setBackgroundColor(parseColor(value))

	def shadowColor(self, value):
		self.guiObject.setShadowColor(parseColor(value))

	def selectionDisabled(self, value):
		self.guiObject.setSelectionEnable(0)

	def transparent(self, value):
		self.guiObject.setTransparent(int(value))

	def borderColor(self, value):
		self.guiObject.setBorderColor(parseColor(value))

	def borderWidth(self, value):
		self.guiObject.setBorderWidth(int(value))

	def scrollbarSliderBorderWidth(self, value):
		self.guiObject.setScrollbarSliderBorderWidth(int(value))

	def scrollbarWidth(self, value):
		self.guiObject.setScrollbarWidth(int(value))

	def scrollbarSliderBorderColor(self, value):
		self.guiObject.setSliderBorderColor(parseColor(value))

	def scrollbarSliderForegroundColor(self, value):
		self.guiObject.setSliderForegroundColor(parseColor(value))

	def scrollbarMode(self, value):
		try:
			self.guiObject.setScrollbarMode({
				"showOnDemand": self.guiObject.showOnDemand,
				"showAlways": self.guiObject.showAlways,
				"showNever": self.guiObject.showNever,
				"showLeft": self.guiObject.showLeft
			}[value])
		except KeyError:
			print "[Skin] Error: Invalid scrollbarMode '%s'!  Must be one of 'showOnDemand', 'showAlways', 'showNever' or 'showLeft'." % value

	def enableWrapAround(self, value):
		value = True if value.lower() in ("1", "enabled", "enablewraparound", "on", "true", "yes") else False
		self.guiObject.setWrapAround(value)

	def itemHeight(self, value):
		self.guiObject.setItemHeight(int(value))

	def pointer(self, value):
		(name, pos) = value.split(":")
		pos = parsePosition(pos, self.scaleTuple)
		ptr = loadPixmap(name, self.desktop)
		self.guiObject.setPointer(0, ptr, pos)

	def seek_pointer(self, value):
		(name, pos) = value.split(":")
		pos = parsePosition(pos, self.scaleTuple)
		ptr = loadPixmap(name, self.desktop)
		self.guiObject.setPointer(1, ptr, pos)

	def shadowOffset(self, value):
		self.guiObject.setShadowOffset(parsePosition(value, self.scaleTuple))

	def noWrap(self, value):
		value = 1 if value.lower() in ("1", "enabled", "nowrap", "on", "true", "yes") else 0
		self.guiObject.setNoWrap(value)

def applySingleAttribute(guiObject, desktop, attrib, value, scale=((1, 1), (1, 1))):
	# Is anyone still using applySingleAttribute?
	AttributeParser(guiObject, desktop, scale).applyOne(attrib, value)

def applyAllAttributes(guiObject, desktop, attributes, scale):
	AttributeParser(guiObject, desktop, scale).applyAll(attributes)

def reloadWindowStyles():
	for id in windowStyles:
		desktop, screenID, domSkin, pathSkin, scope = windowStyles[id]
		loadSingleSkinData(desktop, screenID, domSkin, pathSkin, scope)

def loadSingleSkinData(desktop, screenID, domSkin, pathSkin, scope=SCOPE_CURRENT_SKIN):
	"""Loads skin data like colors, windowstyle etc."""
	assert domSkin.tag == "skin", "root element in skin must be 'skin'!"
	global colors, fonts, menus, parameters, setups, switchPixmap
	for tag in domSkin.findall("output"):
		id = tag.attrib.get("id")
		if id:
			id = int(id)
		else:
			id = GUI_SKIN_ID
		if id == GUI_SKIN_ID:
			for res in tag.findall("resolution"):
				xres = res.attrib.get("xres")
				xres = int(xres) if xres else 720
				yres = res.attrib.get("yres")
				yres = int(yres) if yres else 576
				bpp = res.attrib.get("bpp")
				bpp = int(bpp) if bpp else 32
				# print "[Skin] DEBUG: Resolution xres=%d, yres=%d, bpp=%d." % (xres, yres, bpp)
				from enigma import gMainDC
				gMainDC.getInstance().setResolution(xres, yres)
				desktop.resize(eSize(xres, yres))
				if bpp != 32:
					pass  # Load palette (Not yet implemented!)
	for tag in domSkin.findall("include"):
		filename = tag.attrib.get("filename")
		if filename:
			filename = resolveFilename(scope, filename, path_prefix=pathSkin)
			if isfile(filename):
				loadSkin(filename, scope=scope, desktop=desktop, screenID=screenID)
			else:
				raise SkinError("Included file '%s' not found" % filename)
	for tag in domSkin.findall("switchpixmap"):
		for pixmap in tag.findall("pixmap"):
			name = pixmap.attrib.get("name")
			if not name:
				raise SkinError("Pixmap needs name attribute")
			filename = pixmap.attrib.get("filename")
			if not filename:
				raise SkinError("Pixmap needs filename attribute")
			resolved = resolveFilename(scope, filename, path_prefix=pathSkin)
			if isfile(resolved):
				switchPixmap[name] = LoadPixmap(resolved, cached=True)
			else:
				raise SkinError("The switchpixmap pixmap filename='%s' (%s) not found" % (filename, resolved))
	for tag in domSkin.findall("colors"):
		for color in tag.findall("color"):
			name = color.attrib.get("name")
			color = color.attrib.get("value")
			if name and color:
				colors[name] = parseColor(color)
				# print "[Skin] DEBUG: Color name='%s', color='%s'." % (name, color)
			else:
				raise SkinError("Tag 'color' needs a name and color, got name='%s' and color='%s'" % (name, color))
	for tag in domSkin.findall("fonts"):
		for font in tag.findall("font"):
			filename = font.attrib.get("filename", "<NONAME>")
			name = font.attrib.get("name", "Regular")
			scale = font.attrib.get("scale")
			scale = int(scale) if scale else 100
			isReplacement = font.attrib.get("replacement") and True or False
			render = font.attrib.get("render")
			if render:
				render = int(render)
			else:
				render = 0
			filename = resolveFilename(SCOPE_FONTS, filename, path_prefix=pathSkin)
			if isfile(filename):
				addFont(filename, name, scale, isReplacement, render)
				# Log provided by C++ addFont code.
				# print "[Skin] Add font: Font path='%s', name='%s', scale=%d, isReplacement=%s, render=%d." % (filename, name, scale, isReplacement, render)
			else:
				raise SkinError("Font file '%s' not found" % filename)
		fallbackFont = resolveFilename(SCOPE_FONTS, "fallback.font", path_prefix=pathSkin)
		if isfile(fallbackFont):
			addFont(fallbackFont, "Fallback", 100, -1, 0)
		# else:  # As this is optional don't raise an error.
		# 	raise SkinError("Fallback font '%s' not found" % fallbackFont)
		for alias in tag.findall("alias"):
			try:
				name = alias.attrib.get("name")
				font = alias.attrib.get("font")
				size = int(alias.attrib.get("size"))
				height = int(alias.attrib.get("height", size))  # To be calculated some day.
				width = int(alias.attrib.get("width", size))
				fonts[name] = (font, size, height, width)
				# print "[Skin] Add font alias: name='%s', font='%s', size=%d, height=%s, width=%d." % (name, font, size, height, width)
			except Exception as err:
				raise SkinError("Bad font alias: '%s'" % str(err))
	for tag in domSkin.findall("parameters"):
		for parameter in tag.findall("parameter"):
			try:
				name = parameter.attrib.get("name")
				value = parameter.attrib.get("value")
				parameters[name] = map(parseParameter, [x.strip() for x in value.split(",")]) if "," in value else parseParameter(value)
			except Exception as err:
				raise SkinError("Bad parameter: '%s'" % str(err))
	for tag in domSkin.findall("menus"):
		for setup in tag.findall("menu"):
			key = setup.attrib.get("key")
			image = setup.attrib.get("image")
			if key and image:
				menus[key] = image
				# print "[Skin] DEBUG: Menu key='%s', image='%s'." % (key, image)
			else:
				raise SkinError("Tag menu needs key and image, got key='%s' and image='%s'" % (key, image))
	for tag in domSkin.findall("setups"):
		for setup in tag.findall("setup"):
			key = setup.attrib.get("key")
			image = setup.attrib.get("image")
			if key and image:
				setups[key] = image
				# print "[Skin] DEBUG: Setup key='%s', image='%s'." % (key, image)
			else:
				raise SkinError("Tag setup needs key and image, got key='%s' and image='%s'" % (key, image))
	for tag in domSkin.findall("constant-widgets"):
		for constant_widget in tag.findall("constant-widget"):
			name = constant_widget.attrib.get("name")
			if name:
				constantWidgets[name] = constant_widget
	for tag in domSkin.findall("variables"):
		for parameter in tag.findall("variable"):
			name = parameter.attrib.get("name")
			value = parameter.attrib.get("value")
			x, y = value.split(",")
			if value and name:
				variables[name] = "%s,%s" % (str(x), str(y))
	for tag in domSkin.findall("subtitles"):
		from enigma import eSubtitleWidget
		scale = ((1, 1), (1, 1))
		for substyle in tag.findall("sub"):
			font = parseFont(substyle.attrib.get("font"), scale)
			col = substyle.attrib.get("foregroundColor")
			if col:
				foregroundColor = parseColor(col)
				haveColor = 1
			else:
				foregroundColor = gRGB(0xFFFFFF)
				haveColor = 0
			col = substyle.attrib.get("borderColor")
			if col:
				borderColor = parseColor(col)
			else:
				borderColor = gRGB(0)
			borderwidth = substyle.attrib.get("borderWidth")
			if borderwidth is None:
				borderWidth = 3  # Default: Use a subtitle border.
			else:
				borderWidth = int(borderwidth)
			face = eSubtitleWidget.__dict__[substyle.attrib.get("name")]
			eSubtitleWidget.setFontStyle(face, font, haveColor, foregroundColor, borderColor, borderWidth)
	for tag in domSkin.findall("windowstyle"):
		style = eWindowStyleSkinned()
		styleId = tag.attrib.get("id")
		if styleId:
			styleId = int(styleId)
		else:
			styleId = GUI_SKIN_ID
		font = gFont("Regular", 20)  # Default
		offset = eSize(20, 5)  # Default
		for title in tag.findall("title"):
			offset = parseSize(title.attrib.get("offset"), ((1, 1), (1, 1)))
			font = parseFont(title.attrib.get("font"), ((1, 1), (1, 1)))
		style.setTitleFont(font)
		style.setTitleOffset(offset)
		# print "[Skin] DEBUG: WindowStyle font, offset -", font, offset
		for borderset in tag.findall("borderset"):
			bsName = str(borderset.attrib.get("name"))
			for pixmap in borderset.findall("pixmap"):
				bpName = pixmap.attrib.get("pos")
				filename = pixmap.attrib.get("filename")
				if filename and bpName:
					png = loadPixmap(resolveFilename(scope, filename, path_prefix=pathSkin), desktop)
					try:
						style.setPixmap(eWindowStyleSkinned.__dict__[bsName], eWindowStyleSkinned.__dict__[bpName], png)
					except Exception:
						pass
				# print "[Skin] DEBUG: WindowStyle borderset name, filename -", bpName, filename
		for color in tag.findall("color"):
			colorType = color.attrib.get("name")
			color = parseColor(color.attrib.get("color"))
			try:
				style.setColor(eWindowStyleSkinned.__dict__["col" + colorType], color)
			except Exception:
				raise SkinError("Unknown color type '%s'" % colorType)
			# print "[Skin] DEBUG: WindowStyle color type, color -", type, color
		x = eWindowStyleManager.getInstance()
		x.setStyle(styleId, style)
	for tag in domSkin.findall("margin"):
		styleId = tag.attrib.get("id")
		if styleId:
			styleId = int(styleId)
		else:
			styleId = GUI_SKIN_ID
		r = eRect(0, 0, 0, 0)
		v = tag.attrib.get("left")
		if v:
			r.setLeft(int(v))
		v = tag.attrib.get("top")
		if v:
			r.setTop(int(v))
		v = tag.attrib.get("right")
		if v:
			r.setRight(int(v))
		v = tag.attrib.get("bottom")
		if v:
			r.setBottom(int(v))
		# The "desktop" parameter is hard-coded to the GUI screen, so we must ask
		# for the one that this actually applies to.
		getDesktop(styleId).setMargins(r)


class additionalWidget:
	def __init__(self):
		pass


# Class that makes a tuple look like something else. Some plugins just assume
# that size is a string and try to parse it. This class makes that work.
class SizeTuple(tuple):
	def split(self, *args):
		return str(self[0]), str(self[1])

	def strip(self, *args):
		return "%s,%s" % self

	def __str__(self):
		return "%s,%s" % self


class SkinContext:
	def __init__(self, parent=None, pos=None, size=None, font=None):
		if parent is not None:
			if pos is not None:
				pos, size = parent.parse(pos, size, font)
				self.x, self.y = pos
				self.w, self.h = size
			else:
				self.x = None
				self.y = None
				self.w = None
				self.h = None

	def __str__(self):
		return "Context (%s,%s)+(%s,%s) " % (self.x, self.y, self.w, self.h)

	def parse(self, pos, size, font):
		if size in variables:
			size = variables[size]
		if pos == "fill":
			pos = (self.x, self.y)
			size = (self.w, self.h)
			self.w = 0
			self.h = 0
		else:
			w, h = size.split(",")
			w = parseCoordinate(w, self.w, 0, font)
			h = parseCoordinate(h, self.h, 0, font)
			if pos == "bottom":
				pos = (self.x, self.y + self.h - h)
				size = (self.w, h)
				self.h -= h
			elif pos == "top":
				pos = (self.x, self.y)
				size = (self.w, h)
				self.h -= h
				self.y += h
			elif pos == "left":
				pos = (self.x, self.y)
				size = (w, self.h)
				self.x += w
				self.w -= w
			elif pos == "right":
				pos = (self.x + self.w - w, self.y)
				size = (w, self.h)
				self.w -= w
			else:
				if pos in variables:
					pos = variables[pos]
				size = (w, h)
				pos = pos.split(",")
				pos = (self.x + parseCoordinate(pos[0], self.w, size[0], font), self.y + parseCoordinate(pos[1], self.h, size[1], font))
		return (SizeTuple(pos), SizeTuple(size))


# A context that stacks things instead of aligning them.
#
class SkinContextStack(SkinContext):
	def parse(self, pos, size, font):
		if size in variables:
			size = variables[size]
		if pos == "fill":
			pos = (self.x, self.y)
			size = (self.w, self.h)
		else:
			w, h = size.split(",")
			w = parseCoordinate(w, self.w, 0, font)
			h = parseCoordinate(h, self.h, 0, font)
			if pos == "bottom":
				pos = (self.x, self.y + self.h - h)
				size = (self.w, h)
			elif pos == "top":
				pos = (self.x, self.y)
				size = (self.w, h)
			elif pos == "left":
				pos = (self.x, self.y)
				size = (w, self.h)
			elif pos == "right":
				pos = (self.x + self.w - w, self.y)
				size = (w, self.h)
			else:
				if pos in variables:
					pos = variables[pos]
				size = (w, h)
				pos = pos.split(",")
				pos = (self.x + parseCoordinate(pos[0], self.w, size[0], font), self.y + parseCoordinate(pos[1], self.h, size[1], font))
		return (SizeTuple(pos), SizeTuple(size))

def readSkin(screen, skin, names, desktop):
	if not isinstance(names, list):
		names = [names]
	for n in names:  # Try all skins, first existing one has priority.
		myScreen, path = domScreens.get(n, (None, None))
		if myScreen is not None:
			name = n  # Use this name for debug output.
			break
	else:
		name = "<embedded-in-%s>" % screen.__class__.__name__
	if myScreen is None:  # Otherwise try embedded skin.
		myScreen = getattr(screen, "parsedSkin", None)
	if myScreen is None and getattr(screen, "skin", None):  # Try uncompiled embedded skin.
		skin = screen.skin
		print "[Skin] Parsing embedded skin '%s'." % name
		if isinstance(skin, tuple):
			for s in skin:
				candidate = xml.etree.cElementTree.fromstring(s)
				if candidate.tag == "screen":
					sid = candidate.attrib.get("id", None)
					if (not sid) or (int(sid) == DISPLAY_SKIN_ID):
						myScreen = candidate
						break
			else:
				print "[Skin] No suitable screen found!"
		else:
			myScreen = xml.etree.cElementTree.fromstring(skin)
		if myScreen:
			screen.parsedSkin = myScreen
	if myScreen is None:
		print "[Skin] No skin to read or screen to display."
		myScreen = screen.parsedSkin = xml.etree.cElementTree.fromstring("<screen></screen>")
	screen.skinAttributes = []
	skinPath = getattr(screen, "skin_path", path)
	context = SkinContextStack()
	s = desktop.bounds()
	context.x = s.left()
	context.y = s.top()
	context.w = s.width()
	context.h = s.height()
	del s
	collectAttributes(screen.skinAttributes, myScreen, context, skinPath, ignore=("name",))
	context = SkinContext(context, myScreen.attrib.get("position"), myScreen.attrib.get("size"))
	screen.additionalWidgets = []
	screen.renderer = []
	usedComponents = set()

	def processConstant(constant_widget, context):
		wname = constant_widget.attrib.get("name")
		if wname:
			try:
				cwvalue = constantWidgets[wname]
			except KeyError:
				raise SkinError("Given constant-widget '%s' not found in skin" % wname)
		if cwvalue:
			for x in cwvalue:
				myScreen.append((x))
		try:
			myScreen.remove(constant_widget)
		except ValueError:
			pass

	def processNone(widget, context):
		pass

	def processWidget(widget, context):
		# Okay, we either have 1:1-mapped widgets ("old style"), or 1:n-mapped
		# widgets (source->renderer).
		wname = widget.attrib.get("name")
		wsource = widget.attrib.get("source")
		if wname is None and wsource is None:
			raise SkinError("The widget has no name and no source")
			return
		if wname:
			# print "[Skin] DEBUG: Widget name='%s'." % wname
			usedComponents.add(wname)
			try:  # Get corresponding "gui" object.
				attributes = screen[wname].skinAttributes = []
			except Exception:
				raise SkinError("Component with name '%s' was not found in skin of screen '%s'" % (wname, name))
			# assert screen[wname] is not Source
			collectAttributes(attributes, widget, context, skinPath, ignore=("name",))
		elif wsource:
			# print "[Skin] DEBUG: Widget source='%s'." % wsource
			while True:  # Get corresponding source until we found a non-obsolete source.
				# Parse our current "wsource", which might specify a "related screen" before the dot,
				# for example to reference a parent, global or session-global screen.
				scr = screen
				path = wsource.split(".")  # Resolve all path components.
				while len(path) > 1:
					scr = screen.getRelatedScreen(path[0])
					if scr is None:
						# print "[Skin] DEBUG: wsource='%s', name='%s'." % (wsource, name)
						raise SkinError("Specified related screen '%s' was not found in screen '%s'" % (wsource, name))
					path = path[1:]
				source = scr.get(path[0])  # Resolve the source.
				if isinstance(source, ObsoleteSource):
					# If we found an "obsolete source", issue warning, and resolve the real source.
					print "[Skin] WARNING: SKIN '%s' USES OBSOLETE SOURCE '%s', USE '%s' INSTEAD!" % (name, wsource, source.newSource)
					print "[Skin] OBSOLETE SOURCE WILL BE REMOVED %s, PLEASE UPDATE!" % source.removalDate
					if source.description:
						print "[Skin] Source description: '%s'." % source.description
					wsource = source.new_source
				else:
					break  # Otherwise, use the source.
			if source is None:
				raise SkinError("The source '%s' was not found in screen '%s'" % (wsource, name))
			wrender = widget.attrib.get("render")
			if not wrender:
				raise SkinError("For source '%s' a renderer must be defined with a 'render=' attribute" % wsource)
			for converter in widget.findall("convert"):
				ctype = converter.get("type")
				assert ctype, "[Skin] The 'convert' tag needs a 'type' attribute!"
				# print "[Skin] DEBUG: Converter='%s'." % ctype
				try:
					parms = converter.text.strip()
				except Exception:
					parms = ""
				# print "[Skin] DEBUG: Params='%s'." % parms
				try:
					converterClass = my_import(".".join(("Components", "Converter", ctype))).__dict__.get(ctype)
				except ImportError:
					raise SkinError("Converter '%s' not found" % ctype)
				c = None
				for i in source.downstream_elements:
					if isinstance(i, converterClass) and i.converter_arguments == parms:
						c = i
				if c is None:
					c = converterClass(parms)
					c.connect(source)
				source = c
			try:
				rendererClass = my_import(".".join(("Components", "Renderer", wrender))).__dict__.get(wrender)
			except ImportError:
				raise SkinError("Renderer '%s' not found" % wrender)
			renderer = rendererClass()  # Instantiate renderer.
			renderer.connect(source)  # Connect to source.
			attributes = renderer.skinAttributes = []
			collectAttributes(attributes, widget, context, skinPath, ignore=("render", "source"))
			screen.renderer.append(renderer)

	def processApplet(widget, context):
		try:
			codeText = widget.text.strip()
			widgetType = widget.attrib.get("type")
			code = compile(codeText, "skin applet", "exec")
		except Exception as err:
			raise SkinError("Applet failed to compile: '%s'" % str(err))
		if widgetType == "onLayoutFinish":
			screen.onLayoutFinish.append(code)
		else:
			raise SkinError("Applet type '%s' is unknown" % widgetType)

	def processLabel(widget, context):
		w = additionalWidget()
		w.widget = eLabel
		w.skinAttributes = []
		collectAttributes(w.skinAttributes, widget, context, skinPath, ignore=("name",))
		screen.additionalWidgets.append(w)

	def processPixmap(widget, context):
		w = additionalWidget()
		w.widget = ePixmap
		w.skinAttributes = []
		collectAttributes(w.skinAttributes, widget, context, skinPath, ignore=("name",))
		screen.additionalWidgets.append(w)

	def processScreen(widget, context):
		for w in widget.findall('constant-widget'):
			processConstant(w, context)
		for w in widget.getchildren():
			conditional = w.attrib.get("conditional")
			if conditional and not [i for i in conditional.split(",") if i in screen.keys()]:
				continue
			objecttypes = w.attrib.get("objectTypes", "").split(",")
			if len(objecttypes) > 1 and (objecttypes[0] not in screen.keys() or not [i for i in objecttypes[1:] if i == screen[objecttypes[0]].__class__.__name__]):
				continue
			p = processors.get(w.tag, processNone)
			try:
				p(w, context)
			except SkinError as err:
				print "[Skin] Error in screen '%s' widget '%s' %s!" % (name, w.tag, str(err))

	def processPanel(widget, context):
		n = widget.attrib.get("name")
		if n:
			try:
				s = domScreens[n]
			except KeyError:
				print "[Skin] Error: Unable to find screen '%s' referred in screen '%s'!" % (n, name)
			else:
				processScreen(s[0], context)
		layout = widget.attrib.get("layout")
		if layout == "stack":
			cc = SkinContextStack
		else:
			cc = SkinContext
		try:
			c = cc(context, widget.attrib.get("position"), widget.attrib.get("size"), widget.attrib.get("font"))
		except Exception as err:
			raise SkinError("Failed to create skin context (position='%s', size='%s', font='%s') in context '%s': %s" % (widget.attrib.get("position"), widget.attrib.get("size"), widget.attrib.get("font"), context, err))
		processScreen(widget, c)

	processors = {
		None: processNone,
		"constant-widget": processConstant,
		"widget": processWidget,
		"applet": processApplet,
		"eLabel": processLabel,
		"ePixmap": processPixmap,
		"panel": processPanel
	}

	try:
		msg = " from list '%s'" % ", ".join(names) if len(names) > 1 else ""
		posX = "?" if context.x is None else str(context.x)
		posY = "?" if context.y is None else str(context.y)
		sizeW = "?" if context.w is None else str(context.w)
		sizeH = "?" if context.h is None else str(context.h)
		print "[Skin] Processing screen '%s'%s, position=(%s, %s), size=(%s x %s) for module '%s'." % (name, msg, posX, posY, sizeW, sizeH, screen.__class__.__name__)
		context.x = 0  # Reset offsets, all components are relative to screen coordinates.
		context.y = 0
		processScreen(myScreen, context)
	except Exception as err:
		print "[Skin] Error in screen '%s' %s!" % (name, str(err))

	from Components.GUIComponent import GUIComponent
	unusedComponents = [x for x in set(screen.keys()) - usedComponents if isinstance(x, GUIComponent)]
	assert not unusedComponents, "[Skin] The following components in '%s' don't have a skin entry: %s" % (name, ", ".join(unusedComponents))
	# This may look pointless, but it unbinds "screen" from the nested scope. A better
	# solution is to avoid the nested scope above and use the context object to pass
	# things around.
	screen = None
	usedComponents = None

# Return a scaling factor (float) that can be used to rescale screen displays
# to suit the current resolution of the screen.  The scales are based on a
# default screen resolution of HD (720p).  That is the scale factor for a HD
# screen will be 1.
#
def getSkinFactor():
	skinfactor = getDesktop(GUI_SKIN_ID).size().height() / 720.0
	# if skinfactor not in [0.8, 1, 1.5, 3, 6]:
	# 	print "[Skin] Warning: Unexpected result for getSkinFactor '%0.4f'!" % skinfactor
	return skinfactor

# Search the domScreens dictionary to see if any of the screen names provided
# have a skin based screen.  This will allow coders to know if the named
# screen will be skinned by the skin code.  A return of None implies that the
# code must provide its own skin for the screen to be displayed to the user.
#
def findSkinScreen(names):
	if not isinstance(names, list):
		names = [names]
	for name in names:  # Try all names given, the first one found is the one that will be used by the skin engine.
		screen, path = domScreens.get(name, (None, None))
		if screen is not None:
			return name
	return None

def dump(x, i=0):
	print " " * i + str(x)
	try:
		for n in x.childNodes:
			dump(n, i + 1)
	except Exception:
		None