code.vuplus.com Git - vuplus_dvbapp/blob - skin.py

   1 from Tools.Profile import profile
   2 profile("LOAD:ElementTree")
   3 import xml.etree.cElementTree
   4 from os import path
   5
   6 profile("LOAD:enigma_skin")
   7 from enigma import eSize, ePoint, gFont, eWindow, eLabel, ePixmap, eWindowStyleManager, \
   8         addFont, gRGB, eWindowStyleSkinned
   9 from Components.config import ConfigSubsection, ConfigText, config
  10 from Components.Converter.Converter import Converter
  11 from Components.Sources.Source import Source, ObsoleteSource
  12 from Tools.Directories import resolveFilename, SCOPE_SKIN, SCOPE_SKIN_IMAGE, SCOPE_FONTS, SCOPE_CURRENT_SKIN, SCOPE_CONFIG, fileExists
  13 from Tools.Import import my_import
  14 from Tools.LoadPixmap import LoadPixmap
  15
  16 colorNames = dict()
  17
  18 fonts = {
  19         "Body": ("Regular", 18, 22, 16),
  20         "ChoiceList": ("Regular", 20, 24, 18),
  21 }
  22
  23 parameters = {}
  24
  25 def dump(x, i=0):
  26         print " " * i + str(x)
  27         try:
  28                 for n in x.childNodes:
  29                         dump(n, i + 1)
  30         except:
  31                 None
  32
  33 class SkinError(Exception):
  34         def __init__(self, message):
  35                 self.msg = message
  36
  37         def __str__(self):
  38                 return "{%s}: %s" % (config.skin.primary_skin.value, self.msg)
  39
  40 dom_skins = [ ]
  41
  42 def loadSkin(name, scope = SCOPE_SKIN):
  43         # read the skin
  44         filename = resolveFilename(scope, name)
  45         mpath = path.dirname(filename) + "/"
  46         dom_skins.append((mpath, xml.etree.cElementTree.parse(filename).getroot()))
  47
  48 # we do our best to always select the "right" value
  49 # skins are loaded in order of priority: skin with
  50 # highest priority is loaded last, usually the user-provided
  51 # skin.
  52
  53 # currently, loadSingleSkinData (colors, bordersets etc.)
  54 # are applied one-after-each, in order of ascending priority.
  55 # the dom_skin will keep all screens in descending priority,
  56 # so the first screen found will be used.
  57
  58 # example: loadSkin("nemesis_greenline/skin.xml")
  59 config.skin = ConfigSubsection()
  60 config.skin.primary_skin = ConfigText(default = "skin.xml")
  61
  62 profile("LoadSkin")
  63 try:
  64         loadSkin('skin_user.xml', SCOPE_CONFIG)
  65 except (SkinError, IOError, AssertionError), err:
  66         print "not loading user skin: ", err
  67
  68 try:
  69         loadSkin(config.skin.primary_skin.value)
  70 except (SkinError, IOError, AssertionError), err:
  71         print "SKIN ERROR:", err
  72         print "defaulting to standard skin..."
  73         config.skin.primary_skin.value = 'skin.xml'
  74         loadSkin('skin.xml')
  75
  76 profile("LoadSkinDefault")
  77 loadSkin('skin_default.xml')
  78 profile("LoadSkinDefaultDone")
  79
  80 def parseCoordinate(str, e, size = 0):
  81         str = str.strip()
  82         if str == "center":
  83                 val = (e - size)/2
  84         else:
  85                 sl = len(str)
  86                 l = 1
  87
  88                 if str[0] is 'e':
  89                         val = e
  90                 elif str[0] is 'c':
  91                         val = e/2
  92                 else:
  93                         val = 0;
  94                         l = 0
  95
  96                 if sl - l > 0:
  97                         if str[sl-1] is '%':
  98                                 val += e * int(str[l:sl-1]) / 100
  99                         else:
 100                                 val += int(str[l:sl])
 101         if val < 0:
 102                 val = 0
 103         return val
 104
 105 def evalPos(pos, wsize, ssize, scale):
 106         if pos == "center":
 107                 pos = (ssize - wsize) / 2
 108         else:
 109                 pos = int(pos) * scale[0] / scale[1]
 110         return int(pos)
 111
 112 def parsePosition(str, scale, desktop = None, size = None):
 113         x, y = str.split(',')
 114
 115         wsize = 1, 1
 116         ssize = 1, 1
 117         if desktop is not None:
 118                 ssize = desktop.size().width(), desktop.size().height()
 119         if size is not None:
 120                 wsize = size.width(), size.height()
 121
 122         x = evalPos(x, wsize[0], ssize[0], scale[0])
 123         y = evalPos(y, wsize[1], ssize[1], scale[1])
 124
 125         return ePoint(x, y)
 126
 127 def parseSize(str, scale):
 128         x, y = str.split(',')
 129         return eSize(int(x) * scale[0][0] / scale[0][1], int(y) * scale[1][0] / scale[1][1])
 130
 131 def parseFont(s, scale):
 132         try:
 133                 f = fonts[s]
 134                 name = f[0]
 135                 size = f[1]
 136         except:
 137                 name, size = s.split(';')
 138         return gFont(name, int(size) * scale[0][0] / scale[0][1])
 139
 140 def parseColor(str):
 141         if str[0] != '#':
 142                 try:
 143                         return colorNames[str]
 144                 except:
 145                         raise SkinError("color '%s' must be #aarrggbb or valid named color" % (str))
 146         return gRGB(int(str[1:], 0x10))
 147
 148 def collectAttributes(skinAttributes, node, context, skin_path_prefix=None, ignore=[]):
 149         # walk all attributes
 150         size = None
 151         pos = None
 152         for attrib, value in node.items():
 153                 if attrib not in ignore:
 154                         if attrib in ("pixmap", "pointer", "seek_pointer", "backgroundPixmap", "selectionPixmap"):
 155                                 value = resolveFilename(SCOPE_SKIN_IMAGE, value, path_prefix=skin_path_prefix)
 156
 157                         # Bit of a hack this, really. When a window has a flag (e.g. wfNoBorder)
 158                         # it needs to be set at least before the size is set, in order for the
 159                         # window dimensions to be calculated correctly in all situations.
 160                         # If wfNoBorder is applied after the size has been set, the window will fail to clear the title area.
 161                         # Similar situation for a scrollbar in a listbox; when the scrollbar setting is applied after
 162                         # the size, a scrollbar will not be shown until the selection moves for the first time
 163
 164                         if attrib == 'size':
 165                                 size = value.encode("utf-8")
 166                         elif attrib == 'position':
 167                                 pos = value.encode("utf-8")
 168                         else:
 169                                 skinAttributes.append((attrib, value.encode("utf-8")))
 170
 171         if pos is not None:
 172                 pos, size = context.parse(pos, size)
 173                 skinAttributes.append(('position', pos))
 174         if size is not None:
 175                 skinAttributes.append(('size', size))
 176
 177 def loadPixmap(path, desktop):
 178         cached = False
 179         option = path.find("#")
 180         if option != -1:
 181                 options = path[option+1:].split(',')
 182                 path = path[:option]
 183                 cached = "cached" in options
 184         ptr = LoadPixmap(path, desktop, cached)
 185         if ptr is None:
 186                 raise SkinError("pixmap file %s not found!" % (path))
 187         return ptr
 188
 189 class AttributeParser:
 190         def __init__(self, guiObject, desktop, scale = ((1,1),(1,1))):
 191                 self.guiObject = guiObject
 192                 self.desktop = desktop
 193                 self.scale = scale
 194         def applyOne(self, attrib, value):
 195                 try:
 196                         getattr(self, attrib)(value)
 197                 except AttributeError:
 198                         print "[Skin] Attribute not implemented:", attrib, "value:", value
 199                 except SkinError, ex:
 200                         print "[Skin] Error:", ex
 201         def applyAll(self, attrs):
 202                 for attrib, value in attrs:
 203                         try:
 204                                 getattr(self, attrib)(value)
 205                         except AttributeError:
 206                                 print "[Skin] Attribute not implemented:", attrib, "value:", value
 207                         except SkinError, ex:
 208                                 print "[Skin] Error:", ex
 209         def position(self, value):
 210                 if isinstance(value, tuple):
 211                         self.guiObject.move(ePoint(*value))
 212                 else:
 213                         self.guiObject.move(parsePosition(value, self.scale, self.desktop, self.guiObject.csize()))
 214         def size(self, value):
 215                 if isinstance(value, tuple):
 216                         self.guiObject.resize(eSize(*value))
 217                 else:
 218                         self.guiObject.resize(parseSize(value, self.scale))
 219         def animationPaused(self, value):
 220                 pass
 221         def animationPaused(self, value):
 222                 self.guiObject.setAnimationMode(
 223                         { "disable": 0x00,
 224                                 "off": 0x00,
 225                                 "offshow": 0x10,
 226                                 "offhide": 0x01,
 227                                 "onshow": 0x01,
 228                                 "onhide": 0x10,
 229                         }[value])
 230         def title(self, value):
 231                 self.guiObject.setTitle(_(value))
 232         def text(self, value):
 233                 self.guiObject.setText(_(value))
 234         def font(self, value):
 235                 self.guiObject.setFont(parseFont(value, self.scale))
 236         def zPosition(self, value):
 237                 self.guiObject.setZPosition(int(value))
 238         def itemHeight(self, value):
 239                 self.guiObject.setItemHeight(int(value))
 240         def pixmap(self, value):
 241                 ptr = loadPixmap(value, self.desktop)
 242                 self.guiObject.setPixmap(ptr)
 243         def backgroundPixmap(self, value):
 244                 ptr = loadPixmap(value, self.desktop)
 245                 self.guiObject.setBackgroundPicture(ptr)
 246         def selectionPixmap(self, value):
 247                 ptr = loadPixmap(value, self.desktop)
 248                 self.guiObject.setSelectionPicture(ptr)
 249         def itemHeight(self, value):
 250                 self.guiObject.setItemHeight(int(value))
 251         def alphatest(self, value):
 252                 self.guiObject.setAlphatest(
 253                         { "on": 1,
 254                           "off": 0,
 255                           "blend": 2,
 256                         }[value])
 257         def scale(self, value):
 258                 self.guiObject.setScale(1)
 259         def orientation(self, value):
 260                 try:
 261                         self.guiObject.setOrientation(*
 262                                 { "orVertical": (self.guiObject.orVertical, False),
 263                                         "orTopToBottom": (self.guiObject.orVertical, False),
 264                                         "orBottomToTop": (self.guiObject.orVertical, True),
 265                                         "orHorizontal": (self.guiObject.orHorizontal, False),
 266                                         "orLeftToRight": (self.guiObject.orHorizontal, False),
 267                                         "orRightToLeft": (self.guiObject.orHorizontal, True),
 268                                 }[value])
 269                 except KeyError:
 270                         print "oprientation must be either orVertical or orHorizontal!"
 271         def valign(self, value):
 272                 try:
 273                         self.guiObject.setVAlign(
 274                                 { "top": self.guiObject.alignTop,
 275                                         "center": self.guiObject.alignCenter,
 276                                         "bottom": self.guiObject.alignBottom
 277                                 }[value])
 278                 except KeyError:
 279                         print "valign must be either top, center or bottom!"
 280         def halign(self, value):
 281                 try:
 282                         self.guiObject.setHAlign(
 283                                 { "left": self.guiObject.alignLeft,
 284                                         "center": self.guiObject.alignCenter,
 285                                         "right": self.guiObject.alignRight,
 286                                         "block": self.guiObject.alignBlock
 287                                 }[value])
 288                 except KeyError:
 289                         print "halign must be either left, center, right or block!"
 290         def flags(self, value):
 291                 flags = value.split(',')
 292                 for f in flags:
 293                         try:
 294                                 fv = eWindow.__dict__[f]
 295                                 self.guiObject.setFlag(fv)
 296                         except KeyError:
 297                                 print "illegal flag %s!" % f
 298         def backgroundColor(self, value):
 299                 self.guiObject.setBackgroundColor(parseColor(value))
 300         def backgroundColorSelected(self, value):
 301                 self.guiObject.setBackgroundColorSelected(parseColor(value))
 302         def foregroundColor(self, value):
 303                 self.guiObject.setForegroundColor(parseColor(value))
 304         def foregroundColorSelected(self, value):
 305                 self.guiObject.setForegroundColorSelected(parseColor(value))
 306         def shadowColor(self, value):
 307                 self.guiObject.setShadowColor(parseColor(value))
 308         def selectionDisabled(self, value):
 309                 self.guiObject.setSelectionEnable(0)
 310         def transparent(self, value):
 311                 self.guiObject.setTransparent(int(value))
 312         def borderColor(self, value):
 313                 self.guiObject.setBorderColor(parseColor(value))
 314         def borderWidth(self, value):
 315                 self.guiObject.setBorderWidth(int(value))
 316         def scrollbarMode(self, value):
 317                 self.guiObject.setScrollbarMode(
 318                         { "showOnDemand": self.guiObject.showOnDemand,
 319                                 "showAlways": self.guiObject.showAlways,
 320                                 "showNever": self.guiObject.showNever
 321                         }[value])
 322         def enableWrapAround(self, value):
 323                 self.guiObject.setWrapAround(True)
 324         def pointer(self, value):
 325                 (name, pos) = value.split(':')
 326                 pos = parsePosition(pos, self.scale)
 327                 ptr = loadPixmap(name, self.desktop)
 328                 self.guiObject.setPointer(0, ptr, pos)
 329         def seek_pointer(self, value):
 330                 (name, pos) = value.split(':')
 331                 pos = parsePosition(pos, self.scale)
 332                 ptr = loadPixmap(name, self.desktop)
 333                 self.guiObject.setPointer(1, ptr, pos)
 334         def shadowOffset(self, value):
 335                 self.guiObject.setShadowOffset(parsePosition(value, self.scale))
 336         def noWrap(self, value):
 337                 self.guiObject.setNoWrap(1)
 338         def id(self, value):
 339                 pass
 340
 341 def applySingleAttribute(guiObject, desktop, attrib, value, scale = ((1,1),(1,1))):
 342         # Someone still using applySingleAttribute?
 343         AttributeParser(guiObject, desktop, scale).applyOne(attrib, value)
 344
 345 def applyAllAttributes(guiObject, desktop, attributes, scale):
 346         AttributeParser(guiObject, desktop, scale).applyAll(attributes)
 347
 348 def loadSingleSkinData(desktop, skin, path_prefix):
 349         """loads skin data like colors, windowstyle etc."""
 350         assert skin.tag == "skin", "root element in skin must be 'skin'!"
 351
 352         #print "***SKIN: ", path_prefix
 353
 354         for c in skin.findall("output"):
 355                 id = c.attrib.get('id')
 356                 if id:
 357                         id = int(id)
 358                 else:
 359                         id = 0
 360                 if id == 0: # framebuffer
 361                         for res in c.findall("resolution"):
 362                                 get_attr = res.attrib.get
 363                                 xres = get_attr("xres")
 364                                 if xres:
 365                                         xres = int(xres)
 366                                 else:
 367                                         xres = 720
 368                                 yres = get_attr("yres")
 369                                 if yres:
 370                                         yres = int(yres)
 371                                 else:
 372                                         yres = 576
 373                                 bpp = get_attr("bpp")
 374                                 if bpp:
 375                                         bpp = int(bpp)
 376                                 else:
 377                                         bpp = 32
 378                                 #print "Resolution:", xres,yres,bpp
 379                                 from enigma import gMainDC
 380                                 gMainDC.getInstance().setResolution(xres, yres)
 381                                 desktop.resize(eSize(xres, yres))
 382                                 if bpp != 32:
 383                                         # load palette (not yet implemented)
 384                                         pass
 385
 386         for c in skin.findall("colors"):
 387                 for color in c.findall("color"):
 388                         get_attr = color.attrib.get
 389                         name = get_attr("name")
 390                         color = get_attr("value")
 391                         if name and color:
 392                                 colorNames[name] = parseColor(color)
 393                                 #print "Color:", name, color
 394                         else:
 395                                 raise SkinError("need color and name, got %s %s" % (name, color))
 396
 397         for c in skin.findall("fonts"):
 398                 for font in c.findall("font"):
 399                         get_attr = font.attrib.get
 400                         filename = get_attr("filename", "<NONAME>")
 401                         name = get_attr("name", "Regular")
 402                         scale = get_attr("scale")
 403                         if scale:
 404                                 scale = int(scale)
 405                         else:
 406                                 scale = 100
 407                         is_replacement = get_attr("replacement") and True or False
 408                         resolved_font = resolveFilename(SCOPE_FONTS, filename, path_prefix=path_prefix)
 409                         if not fileExists(resolved_font): #when font is not available look at current skin path
 410                                 skin_path = resolveFilename(SCOPE_CURRENT_SKIN, filename)
 411                                 if fileExists(skin_path):
 412                                         resolved_font = skin_path
 413                         addFont(resolved_font, name, scale, is_replacement)
 414                         #print "Font: ", resolved_font, name, scale, is_replacement
 415
 416                 for alias in c.findall("alias"):
 417                         get = alias.attrib.get
 418                         try:
 419                                 name = get("name")
 420                                 font = get("font")
 421                                 size = int(get("size"))
 422                                 height = int(get("height", size)) # to be calculated some day
 423                                 width = int(get("width", size))
 424                                 global fonts
 425                                 fonts[name] = (font, size, height, width)
 426                         except Exception, ex:
 427                                 print "[SKIN] bad font alias", ex
 428
 429         for c in skin.findall("parameters"):
 430                 for parameter in c.findall("parameter"):
 431                         get = parameter.attrib.get
 432                         try:
 433                                 name = get("name")
 434                                 value = get("value")
 435                                 parameters[name] = map(int, value.split(","))
 436                         except Exception, ex:
 437                                 print "[SKIN] bad parameter", ex
 438
 439         for c in skin.findall("subtitles"):
 440                 from enigma import eWidget, eSubtitleWidget
 441                 scale = ((1,1),(1,1))
 442                 for substyle in c.findall("sub"):
 443                         get_attr = substyle.attrib.get
 444                         font = parseFont(get_attr("font"), scale)
 445                         col = get_attr("foregroundColor")
 446                         if col:
 447                                 foregroundColor = parseColor(col)
 448                                 haveColor = 1
 449                         else:
 450                                 foregroundColor = gRGB(0xFFFFFF)
 451                                 haveColor = 0
 452                         col = get_attr("shadowColor")
 453                         if col:
 454                                 shadowColor = parseColor(col)
 455                         else:
 456                                 shadowColor = gRGB(0)
 457                         shadowOffset = parsePosition(get_attr("shadowOffset"), scale)
 458                         face = eSubtitleWidget.__dict__[get_attr("name")]
 459                         eSubtitleWidget.setFontStyle(face, font, haveColor, foregroundColor, shadowColor, shadowOffset)
 460
 461         for windowstyle in skin.findall("windowstyle"):
 462                 style = eWindowStyleSkinned()
 463                 id = windowstyle.attrib.get("id")
 464                 if id:
 465                         id = int(id)
 466                 else:
 467                         id = 0
 468                 #print "windowstyle:", id
 469
 470                 # defaults
 471                 font = gFont("Regular", 20)
 472                 offset = eSize(20, 5)
 473
 474                 for title in windowstyle.findall("title"):
 475                         get_attr = title.attrib.get
 476                         offset = parseSize(get_attr("offset"), ((1,1),(1,1)))
 477                         font = parseFont(get_attr("font"), ((1,1),(1,1)))
 478
 479                 style.setTitleFont(font);
 480                 style.setTitleOffset(offset)
 481                 #print "  ", font, offset
 482
 483                 for borderset in windowstyle.findall("borderset"):
 484                         bsName = str(borderset.attrib.get("name"))
 485                         for pixmap in borderset.findall("pixmap"):
 486                                 get_attr = pixmap.attrib.get
 487                                 bpName = get_attr("pos")
 488                                 filename = get_attr("filename")
 489                                 if filename and bpName:
 490                                         png = loadPixmap(resolveFilename(SCOPE_SKIN_IMAGE, filename, path_prefix=path_prefix), desktop)
 491                                         style.setPixmap(eWindowStyleSkinned.__dict__[bsName], eWindowStyleSkinned.__dict__[bpName], png)
 492                                 #print "  borderset:", bpName, filename
 493
 494                 for color in windowstyle.findall("color"):
 495                         get_attr = color.attrib.get
 496                         colorType = get_attr("name")
 497                         color = parseColor(get_attr("color"))
 498                         try:
 499                                 style.setColor(eWindowStyleSkinned.__dict__["col" + colorType], color)
 500                         except:
 501                                 raise SkinError("Unknown color %s" % (colorType))
 502                                 #pass
 503
 504                         #print "  color:", type, color
 505
 506                 x = eWindowStyleManager.getInstance()
 507                 x.setStyle(id, style)
 508
 509 display_skin_id = 1
 510 dom_screens = {}
 511
 512 def loadSkinData(desktop):
 513         global dom_skins, dom_screens, display_skin_id
 514         skins = dom_skins[:]
 515         skins.reverse()
 516         for (path, dom_skin) in skins:
 517                 loadSingleSkinData(desktop, dom_skin, path)
 518
 519                 for elem in dom_skin:
 520                         if elem.tag == 'screen':
 521                                 name = elem.attrib.get('name', None)
 522                                 if name:
 523                                         sid = elem.attrib.get('id', None)
 524                                         if sid and (int(sid) != display_skin_id):
 525                                                 # not for this display
 526                                                 elem.clear()
 527                                                 continue
 528                                         if name in dom_screens:
 529                                                 # Kill old versions, save memory
 530                                                 dom_screens[name][0].clear()
 531                                         dom_screens[name] = (elem, path)
 532                                 else:
 533                                         # without name, it's useless!
 534                                         elem.clear()
 535                         else:
 536                                 # non-screen element, no need for it any longer
 537                                 elem.clear()
 538         # no longer needed, we know where the screens are now.
 539         del dom_skins
 540
 541 def lookupScreen(name, style_id):
 542         if dom_screens.has_key(name):
 543                 elem, path = dom_screens[name]
 544                 screen_style_id = elem.attrib.get('id', '-1')
 545                 if screen_style_id == '-1' and name.find('ummary') > 0:
 546                         screen_style_id = '1'
 547                 if (style_id != 2 and int(screen_style_id) == -1) or int(screen_style_id) == style_id:
 548                         return elem, path
 549
 550         return None, None
 551
 552 class additionalWidget:
 553         pass
 554
 555 # Class that makes a tuple look like something else. Some plugins just assume
 556 # that size is a string and try to parse it. This class makes that work.
 557 class SizeTuple(tuple):
 558         def split(self, *args):
 559                 return (str(self[0]), str(self[1]))
 560         def strip(self, *args):
 561                 return '%s,%s' % self
 562         def __str__(self):
 563                 return '%s,%s' % self
 564
 565 class SkinContext:
 566         def __init__(self, parent=None, pos=None, size=None):
 567                 if parent is not None:
 568                         if pos is not None:
 569                                 pos, size = parent.parse(pos, size)
 570                                 self.x, self.y = pos
 571                                 self.w, self.h = size
 572                         else:
 573                                 self.x = None
 574                                 self.y = None
 575                                 self.w = None
 576                                 self.h = None
 577         def __str__(self):
 578                 return "Context (%s,%s)+(%s,%s) " % (self.x, self.y, self.w, self.h)
 579         def parse(self, pos, size):
 580                 if pos == "fill":
 581                         pos = (self.x, self.y)
 582                         size = (self.w, self.h)
 583                         self.w = 0
 584                         self.h = 0
 585                 elif pos == "bottom":
 586                         w,h = size.split(',')
 587                         h = int(h)
 588                         pos = (self.x, self.y + self.h - h)
 589                         size = (self.w, h)
 590                         self.h -= h
 591                 elif pos == "top":
 592                         w,h = size.split(',')
 593                         h = int(h)
 594                         pos = (self.x, self.y)
 595                         size = (self.w, h)
 596                         self.h -= h
 597                         self.y += h
 598                 elif pos == "left":
 599                         w,h = size.split(',')
 600                         w = int(w)
 601                         pos = (self.x, self.y)
 602                         size = (w, self.h)
 603                         self.x += w
 604                         self.w -= w
 605                 elif pos == "right":
 606                         w,h = size.split(',')
 607                         w = int(w)
 608                         pos = (self.x + self.w - w, self.y)
 609                         size = (w, self.h)
 610                         self.w -= w
 611                 else:
 612                         size = size.split(',')
 613                         size = (parseCoordinate(size[0], self.w), parseCoordinate(size[1], self.h))
 614                         pos = pos.split(',')
 615                         pos = (self.x + parseCoordinate(pos[0], self.w, size[0]), self.y + parseCoordinate(pos[1], self.h, size[1]))
 616                 return (SizeTuple(pos), SizeTuple(size))
 617
 618 class SkinContextStack(SkinContext):
 619         # A context that stacks things instead of aligning them
 620         def parse(self, pos, size):
 621                 if pos == "fill":
 622                         pos = (self.x, self.y)
 623                         size = (self.w, self.h)
 624                 elif pos == "bottom":
 625                         w,h = size.split(',')
 626                         h = int(h)
 627                         pos = (self.x, self.y + self.h - h)
 628                         size = (self.w, h)
 629                 elif pos == "top":
 630                         w,h = size.split(',')
 631                         h = int(h)
 632                         pos = (self.x, self.y)
 633                         size = (self.w, h)
 634                 elif pos == "left":
 635                         w,h = size.split(',')
 636                         w = int(w)
 637                         pos = (self.x, self.y)
 638                         size = (w, self.h)
 639                 elif pos == "right":
 640                         w,h = size.split(',')
 641                         w = int(w)
 642                         pos = (self.x + self.w - w, self.y)
 643                         size = (w, self.h)
 644                 else:
 645                         size = size.split(',')
 646                         size = (parseCoordinate(size[0], self.w), parseCoordinate(size[1], self.h))
 647                         pos = pos.split(',')
 648                         pos = (self.x + parseCoordinate(pos[0], self.w, size[0]), self.y + parseCoordinate(pos[1], self.h, size[1]))
 649                 return (SizeTuple(pos), SizeTuple(size))
 650
 651 def readSkin(screen, skin, names, desktop):
 652         if not isinstance(names, list):
 653                 names = [names]
 654
 655         name = "<embedded-in-'%s'>" % screen.__class__.__name__
 656
 657         style_id = desktop.getStyleID();
 658
 659         # try all skins, first existing one have priority
 660         for n in names:
 661                 myscreen, path = lookupScreen(n, style_id)
 662                 if myscreen is not None:
 663                         # use this name for debug output
 664                         name = n
 665                         break
 666
 667         # otherwise try embedded skin
 668         if myscreen is None:
 669                 myscreen = getattr(screen, "parsedSkin", None)
 670
 671         # try uncompiled embedded skin
 672         if myscreen is None and getattr(screen, "skin", None):
 673                 print "Looking for embedded skin"
 674                 skin_tuple = screen.skin
 675                 if not isinstance(skin_tuple, tuple):
 676                         skin_tuple = (skin_tuple,)
 677                 for sskin in skin_tuple:
 678                         parsedSkin = xml.etree.cElementTree.fromstring(sskin)
 679                         screen_style_id = parsedSkin.attrib.get('id', '-1')
 680                         if (style_id != 2 and int(screen_style_id) == -1) or int(screen_style_id) == style_id:
 681                                 myscreen = screen.parsedSkin = parsedSkin
 682                                 break
 683
 684         #assert myscreen is not None, "no skin for screen '" + repr(names) + "' found!"
 685         if myscreen is None:
 686                 print "No skin to read..."
 687                 emptySkin = "<screen></screen>"
 688                 myscreen = screen.parsedSkin = xml.etree.cElementTree.fromstring(emptySkin)
 689
 690         screen.skinAttributes = [ ]
 691
 692         skin_path_prefix = getattr(screen, "skin_path", path)
 693
 694 #       collectAttributes(screen.skinAttributes, myscreen, skin_path_prefix, ignore=["name"])
 695
 696         context = SkinContext()
 697         s = desktop.size()
 698         context.x = 0
 699         context.y = 0
 700         context.w = s.width()
 701         context.h = s.height()
 702         del s
 703         collectAttributes(screen.skinAttributes, myscreen, context, skin_path_prefix, ignore=("name",))
 704         context = SkinContext(context, myscreen.attrib.get('position'), myscreen.attrib.get('size'))
 705
 706 #
 707
 708         screen.additionalWidgets = [ ]
 709         screen.renderer = [ ]
 710
 711         visited_components = set()
 712
 713         # now walk all widgets and stuff
 714         def process_none(widget, context):
 715                 pass
 716
 717         def process_widget(widget, context):
 718                 get_attr = widget.attrib.get
 719                 # ok, we either have 1:1-mapped widgets ('old style'), or 1:n-mapped
 720                 # widgets (source->renderer).
 721
 722                 wname = get_attr('name')
 723                 wsource = get_attr('source')
 724
 725                 if wname is None and wsource is None:
 726                         print "widget has no name and no source!"
 727                         return
 728
 729                 if wname:
 730                         #print "Widget name=", wname
 731                         visited_components.add(wname)
 732
 733                         # get corresponding 'gui' object
 734                         try:
 735                                 attributes = screen[wname].skinAttributes = [ ]
 736                         except:
 737                                 raise SkinError("component with name '" + wname + "' was not found in skin of screen '" + name + "'!")
 738                                 #print "WARNING: component with name '" + wname + "' was not found in skin of screen '" + name + "'!"
 739
 740 #                       assert screen[wname] is not Source
 741
 742                         # and collect attributes for this
 743                         collectAttributes(attributes, widget, context, skin_path_prefix, ignore=['name'])
 744                 elif wsource:
 745                         # get corresponding source
 746                         #print "Widget source=", wsource
 747
 748                         while True: # until we found a non-obsolete source
 749
 750                                 # parse our current "wsource", which might specifiy a "related screen" before the dot,
 751                                 # for example to reference a parent, global or session-global screen.
 752                                 scr = screen
 753
 754                                 # resolve all path components
 755                                 path = wsource.split('.')
 756                                 while len(path) > 1:
 757                                         scr = screen.getRelatedScreen(path[0])
 758                                         if scr is None:
 759                                                 #print wsource
 760                                                 #print name
 761                                                 raise SkinError("specified related screen '" + wsource + "' was not found in screen '" + name + "'!")
 762                                         path = path[1:]
 763
 764                                 # resolve the source.
 765                                 source = scr.get(path[0])
 766                                 if isinstance(source, ObsoleteSource):
 767                                         # however, if we found an "obsolete source", issue warning, and resolve the real source.
 768                                         print "WARNING: SKIN '%s' USES OBSOLETE SOURCE '%s', USE '%s' INSTEAD!" % (name, wsource, source.new_source)
 769                                         print "OBSOLETE SOURCE WILL BE REMOVED %s, PLEASE UPDATE!" % (source.removal_date)
 770                                         if source.description:
 771                                                 print source.description
 772
 773                                         wsource = source.new_source
 774                                 else:
 775                                         # otherwise, use that source.
 776                                         break
 777
 778                         if source is None:
 779                                 raise SkinError("source '" + wsource + "' was not found in screen '" + name + "'!")
 780
 781                         wrender = get_attr('render')
 782
 783                         if not wrender:
 784                                 raise SkinError("you must define a renderer with render= for source '%s'" % (wsource))
 785
 786                         for converter in widget.findall("convert"):
 787                                 ctype = converter.get('type')
 788                                 assert ctype, "'convert'-tag needs a 'type'-attribute"
 789                                 #print "Converter:", ctype
 790                                 try:
 791                                         parms = converter.text.strip()
 792                                 except:
 793                                         parms = ""
 794                                 #print "Params:", parms
 795                                 converter_class = my_import('.'.join(("Components", "Converter", ctype))).__dict__.get(ctype)
 796
 797                                 c = None
 798
 799                                 for i in source.downstream_elements:
 800                                         if isinstance(i, converter_class) and i.converter_arguments == parms:
 801                                                 c = i
 802
 803                                 if c is None:
 804                                         print "allocating new converter!"
 805                                         c = converter_class(parms)
 806                                         c.connect(source)
 807                                 else:
 808                                         print "reused converter!"
 809
 810                                 source = c
 811
 812                         renderer_class = my_import('.'.join(("Components", "Renderer", wrender))).__dict__.get(wrender)
 813
 814                         renderer = renderer_class() # instantiate renderer
 815
 816                         renderer.connect(source) # connect to source
 817                         attributes = renderer.skinAttributes = [ ]
 818                         collectAttributes(attributes, widget, context, skin_path_prefix, ignore=['render', 'source'])
 819
 820                         screen.renderer.append(renderer)
 821
 822         def process_applet(widget, context):
 823                 try:
 824                         codeText = widget.text.strip()
 825                 except:
 826                         codeText = ""
 827
 828                 #print "Found code:"
 829                 #print codeText
 830                 widgetType = widget.attrib.get('type')
 831
 832                 code = compile(codeText, "skin applet", "exec")
 833
 834                 if widgetType == "onLayoutFinish":
 835                         screen.onLayoutFinish.append(code)
 836                         #print "onLayoutFinish = ", codeText
 837                 else:
 838                         raise SkinError("applet type '%s' unknown!" % widgetType)
 839                         #print "applet type '%s' unknown!" % type
 840
 841         def process_elabel(widget, context):
 842                 w = additionalWidget()
 843                 w.widget = eLabel
 844                 w.skinAttributes = [ ]
 845                 collectAttributes(w.skinAttributes, widget, context, skin_path_prefix, ignore=['name'])
 846                 screen.additionalWidgets.append(w)
 847
 848         def process_epixmap(widget, context):
 849                 w = additionalWidget()
 850                 w.widget = ePixmap
 851                 w.skinAttributes = [ ]
 852                 collectAttributes(w.skinAttributes, widget, context, skin_path_prefix, ignore=['name'])
 853                 screen.additionalWidgets.append(w)
 854
 855         def process_screen(widget, context):
 856                 for w in widget.findall("widget"):
 857                         process_widget(w, context)
 858
 859                 for w in widget.getchildren():
 860                         if w.tag == "widget":
 861                                 continue
 862
 863                         p = processors.get(w.tag, process_none)
 864                         p(w, context)
 865
 866         def process_panel(widget, context):
 867                 n = widget.attrib.get('name')
 868                 if n:
 869                         try:
 870                                 s = dom_screens.get(n, None)
 871                         except KeyError:
 872                                 print "[SKIN] Unable to find screen '%s' referred in screen '%s'" % (n, name)
 873                         else:
 874                                 process_screen(s[0], context)
 875
 876                 layout = widget.attrib.get('layout')
 877                 if layout == 'stack':
 878                         cc = SkinContextStack
 879                 else:
 880                         cc = SkinContext
 881                 try:
 882                         c = cc(context, widget.attrib.get('position'), widget.attrib.get('size'))
 883                 except Exception, ex:
 884                         raise SkinError("Failed to create skincontext (%s,%s) in %s: %s" % (widget.attrib.get('position'), widget.attrib.get('size'), context, ex) )
 885
 886                 process_screen(widget, c)
 887
 888         processors = {
 889                 None: process_none,
 890                 "widget": process_widget,
 891                 "applet": process_applet,
 892                 "eLabel": process_elabel,
 893                 "ePixmap": process_epixmap,
 894                 "panel": process_panel
 895         }
 896
 897         try:
 898                 context.x = 0 # reset offsets, all components are relative to screen
 899                 context.y = 0 # coordinates.
 900                 process_screen(myscreen, context)
 901         except SkinError, e:
 902                         print "[Skin] SKIN ERROR:", e
 903
 904         from Components.GUIComponent import GUIComponent
 905         nonvisited_components = [x for x in set(screen.keys()) - visited_components if isinstance(x, GUIComponent)]
 906         assert not nonvisited_components, "the following components in %s don't have a skin entry: %s" % (name, ', '.join(nonvisited_components))
 907         # This may look pointless, but it unbinds 'screen' from the nested scope. A better
 908         # solution is to avoid the nested scope above and use the context object to pass
 909         # things around.
 910         screen = None
 911         visited_components = None
 912