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 morphRcImagePath(value):
 178         if value.startswith('/usr/share/enigma2') and path.basename(value) in ('rc.png', 'rcold.png'):
 179                 value = resolveFilename(SCOPE_SKIN, 'rc/' + 'rc_%d.png' % config.misc.rcused.value)
 180         return value
 181
 182 def loadPixmap(path, desktop):
 183         cached = False
 184         option = path.find("#")
 185         if option != -1:
 186                 options = path[option+1:].split(',')
 187                 path = path[:option]
 188                 cached = "cached" in options
 189         ptr = LoadPixmap(morphRcImagePath(path), desktop, cached)
 190         if ptr is None:
 191                 raise SkinError("pixmap file %s not found!" % (path))
 192         return ptr
 193
 194 class AttributeParser:
 195         def __init__(self, guiObject, desktop, scale = ((1,1),(1,1))):
 196                 self.guiObject = guiObject
 197                 self.desktop = desktop
 198                 self.scale = scale
 199         def applyOne(self, attrib, value):
 200                 try:
 201                         getattr(self, attrib)(value)
 202                 except AttributeError:
 203                         print "[Skin] Attribute not implemented:", attrib, "value:", value
 204                 except SkinError, ex:
 205                         print "[Skin] Error:", ex
 206         def applyAll(self, attrs):
 207                 for attrib, value in attrs:
 208                         try:
 209                                 getattr(self, attrib)(value)
 210                         except AttributeError:
 211                                 print "[Skin] Attribute not implemented:", attrib, "value:", value
 212                         except SkinError, ex:
 213                                 print "[Skin] Error:", ex
 214         def position(self, value):
 215                 if isinstance(value, tuple):
 216                         self.guiObject.move(ePoint(*value))
 217                 else:
 218                         self.guiObject.move(parsePosition(value, self.scale, self.desktop, self.guiObject.csize()))
 219         def size(self, value):
 220                 if isinstance(value, tuple):
 221                         self.guiObject.resize(eSize(*value))
 222                 else:
 223                         self.guiObject.resize(parseSize(value, self.scale))
 224         def animationPaused(self, value):
 225                 pass
 226         def animationPaused(self, value):
 227                 self.guiObject.setAnimationMode(
 228                         { "disable": 0x00,
 229                                 "off": 0x00,
 230                                 "offshow": 0x10,
 231                                 "offhide": 0x01,
 232                                 "onshow": 0x01,
 233                                 "onhide": 0x10,
 234                         }[value])
 235         def title(self, value):
 236                 self.guiObject.setTitle(_(value))
 237         def text(self, value):
 238                 self.guiObject.setText(_(value))
 239         def font(self, value):
 240                 self.guiObject.setFont(parseFont(value, self.scale))
 241         def zPosition(self, value):
 242                 self.guiObject.setZPosition(int(value))
 243         def itemHeight(self, value):
 244                 self.guiObject.setItemHeight(int(value))
 245         def pixmap(self, value):
 246                 ptr = loadPixmap(value, self.desktop)
 247                 self.guiObject.setPixmap(ptr)
 248         def backgroundPixmap(self, value):
 249                 ptr = loadPixmap(value, self.desktop)
 250                 self.guiObject.setBackgroundPicture(ptr)
 251         def selectionPixmap(self, value):
 252                 ptr = loadPixmap(value, self.desktop)
 253                 self.guiObject.setSelectionPicture(ptr)
 254         def itemHeight(self, value):
 255                 self.guiObject.setItemHeight(int(value))
 256         def alphatest(self, value):
 257                 self.guiObject.setAlphatest(
 258                         { "on": 1,
 259                           "off": 0,
 260                           "blend": 2,
 261                         }[value])
 262         def scale(self, value):
 263                 self.guiObject.setScale(1)
 264         def orientation(self, value):
 265                 try:
 266                         self.guiObject.setOrientation(*
 267                                 { "orVertical": (self.guiObject.orVertical, False),
 268                                         "orTopToBottom": (self.guiObject.orVertical, False),
 269                                         "orBottomToTop": (self.guiObject.orVertical, True),
 270                                         "orHorizontal": (self.guiObject.orHorizontal, False),
 271                                         "orLeftToRight": (self.guiObject.orHorizontal, False),
 272                                         "orRightToLeft": (self.guiObject.orHorizontal, True),
 273                                 }[value])
 274                 except KeyError:
 275                         print "oprientation must be either orVertical or orHorizontal!"
 276         def valign(self, value):
 277                 try:
 278                         self.guiObject.setVAlign(
 279                                 { "top": self.guiObject.alignTop,
 280                                         "center": self.guiObject.alignCenter,
 281                                         "bottom": self.guiObject.alignBottom
 282                                 }[value])
 283                 except KeyError:
 284                         print "valign must be either top, center or bottom!"
 285         def halign(self, value):
 286                 try:
 287                         self.guiObject.setHAlign(
 288                                 { "left": self.guiObject.alignLeft,
 289                                         "center": self.guiObject.alignCenter,
 290                                         "right": self.guiObject.alignRight,
 291                                         "block": self.guiObject.alignBlock
 292                                 }[value])
 293                 except KeyError:
 294                         print "halign must be either left, center, right or block!"
 295         def flags(self, value):
 296                 flags = value.split(',')
 297                 for f in flags:
 298                         try:
 299                                 fv = eWindow.__dict__[f]
 300                                 self.guiObject.setFlag(fv)
 301                         except KeyError:
 302                                 print "illegal flag %s!" % f
 303         def backgroundColor(self, value):
 304                 self.guiObject.setBackgroundColor(parseColor(value))
 305         def backgroundColorSelected(self, value):
 306                 self.guiObject.setBackgroundColorSelected(parseColor(value))
 307         def foregroundColor(self, value):
 308                 self.guiObject.setForegroundColor(parseColor(value))
 309         def foregroundColorSelected(self, value):
 310                 self.guiObject.setForegroundColorSelected(parseColor(value))
 311         def shadowColor(self, value):
 312                 self.guiObject.setShadowColor(parseColor(value))
 313         def selectionDisabled(self, value):
 314                 self.guiObject.setSelectionEnable(0)
 315         def transparent(self, value):
 316                 self.guiObject.setTransparent(int(value))
 317         def borderColor(self, value):
 318                 self.guiObject.setBorderColor(parseColor(value))
 319         def borderWidth(self, value):
 320                 self.guiObject.setBorderWidth(int(value))
 321         def scrollbarMode(self, value):
 322                 self.guiObject.setScrollbarMode(
 323                         { "showOnDemand": self.guiObject.showOnDemand,
 324                                 "showAlways": self.guiObject.showAlways,
 325                                 "showNever": self.guiObject.showNever
 326                         }[value])
 327         def enableWrapAround(self, value):
 328                 self.guiObject.setWrapAround(True)
 329         def pointer(self, value):
 330                 (name, pos) = value.split(':')
 331                 pos = parsePosition(pos, self.scale)
 332                 ptr = loadPixmap(name, self.desktop)
 333                 self.guiObject.setPointer(0, ptr, pos)
 334         def seek_pointer(self, value):
 335                 (name, pos) = value.split(':')
 336                 pos = parsePosition(pos, self.scale)
 337                 ptr = loadPixmap(name, self.desktop)
 338                 self.guiObject.setPointer(1, ptr, pos)
 339         def shadowOffset(self, value):
 340                 self.guiObject.setShadowOffset(parsePosition(value, self.scale))
 341         def noWrap(self, value):
 342                 self.guiObject.setNoWrap(1)
 343         def id(self, value):
 344                 pass
 345
 346 def applySingleAttribute(guiObject, desktop, attrib, value, scale = ((1,1),(1,1))):
 347         # Someone still using applySingleAttribute?
 348         AttributeParser(guiObject, desktop, scale).applyOne(attrib, value)
 349
 350 def applyAllAttributes(guiObject, desktop, attributes, scale):
 351         AttributeParser(guiObject, desktop, scale).applyAll(attributes)
 352
 353 def loadSingleSkinData(desktop, skin, path_prefix):
 354         """loads skin data like colors, windowstyle etc."""
 355         assert skin.tag == "skin", "root element in skin must be 'skin'!"
 356
 357         #print "***SKIN: ", path_prefix
 358
 359         for c in skin.findall("output"):
 360                 id = c.attrib.get('id')
 361                 if id:
 362                         id = int(id)
 363                 else:
 364                         id = 0
 365                 if id == 0: # framebuffer
 366                         for res in c.findall("resolution"):
 367                                 get_attr = res.attrib.get
 368                                 xres = get_attr("xres")
 369                                 if xres:
 370                                         xres = int(xres)
 371                                 else:
 372                                         xres = 720
 373                                 yres = get_attr("yres")
 374                                 if yres:
 375                                         yres = int(yres)
 376                                 else:
 377                                         yres = 576
 378                                 bpp = get_attr("bpp")
 379                                 if bpp:
 380                                         bpp = int(bpp)
 381                                 else:
 382                                         bpp = 32
 383                                 #print "Resolution:", xres,yres,bpp
 384                                 from enigma import gMainDC
 385                                 gMainDC.getInstance().setResolution(xres, yres)
 386                                 desktop.resize(eSize(xres, yres))
 387                                 if bpp != 32:
 388                                         # load palette (not yet implemented)
 389                                         pass
 390
 391         for c in skin.findall("colors"):
 392                 for color in c.findall("color"):
 393                         get_attr = color.attrib.get
 394                         name = get_attr("name")
 395                         color = get_attr("value")
 396                         if name and color:
 397                                 colorNames[name] = parseColor(color)
 398                                 #print "Color:", name, color
 399                         else:
 400                                 raise SkinError("need color and name, got %s %s" % (name, color))
 401
 402         for c in skin.findall("fonts"):
 403                 for font in c.findall("font"):
 404                         get_attr = font.attrib.get
 405                         filename = get_attr("filename", "<NONAME>")
 406                         name = get_attr("name", "Regular")
 407                         scale = get_attr("scale")
 408                         if scale:
 409                                 scale = int(scale)
 410                         else:
 411                                 scale = 100
 412                         is_replacement = get_attr("replacement") and True or False
 413                         resolved_font = resolveFilename(SCOPE_FONTS, filename, path_prefix=path_prefix)
 414                         if not fileExists(resolved_font): #when font is not available look at current skin path
 415                                 skin_path = resolveFilename(SCOPE_CURRENT_SKIN, filename)
 416                                 if fileExists(skin_path):
 417                                         resolved_font = skin_path
 418                         addFont(resolved_font, name, scale, is_replacement)
 419                         #print "Font: ", resolved_font, name, scale, is_replacement
 420
 421                 for alias in c.findall("alias"):
 422                         get = alias.attrib.get
 423                         try:
 424                                 name = get("name")
 425                                 font = get("font")
 426                                 size = int(get("size"))
 427                                 height = int(get("height", size)) # to be calculated some day
 428                                 width = int(get("width", size))
 429                                 global fonts
 430                                 fonts[name] = (font, size, height, width)
 431                         except Exception, ex:
 432                                 print "[SKIN] bad font alias", ex
 433
 434         for c in skin.findall("parameters"):
 435                 for parameter in c.findall("parameter"):
 436                         get = parameter.attrib.get
 437                         try:
 438                                 name = get("name")
 439                                 value = get("value")
 440                                 parameters[name] = map(int, value.split(","))
 441                         except Exception, ex:
 442                                 print "[SKIN] bad parameter", ex
 443
 444         for c in skin.findall("subtitles"):
 445                 from enigma import eWidget, eSubtitleWidget
 446                 scale = ((1,1),(1,1))
 447                 for substyle in c.findall("sub"):
 448                         get_attr = substyle.attrib.get
 449                         font = parseFont(get_attr("font"), scale)
 450                         col = get_attr("foregroundColor")
 451                         if col:
 452                                 foregroundColor = parseColor(col)
 453                                 haveColor = 1
 454                         else:
 455                                 foregroundColor = gRGB(0xFFFFFF)
 456                                 haveColor = 0
 457                         col = get_attr("shadowColor")
 458                         if col:
 459                                 shadowColor = parseColor(col)
 460                         else:
 461                                 shadowColor = gRGB(0)
 462                         shadowOffset = parsePosition(get_attr("shadowOffset"), scale)
 463                         face = eSubtitleWidget.__dict__[get_attr("name")]
 464                         eSubtitleWidget.setFontStyle(face, font, haveColor, foregroundColor, shadowColor, shadowOffset)
 465
 466         for windowstyle in skin.findall("windowstyle"):
 467                 style = eWindowStyleSkinned()
 468                 id = windowstyle.attrib.get("id")
 469                 if id:
 470                         id = int(id)
 471                 else:
 472                         id = 0
 473                 #print "windowstyle:", id
 474
 475                 # defaults
 476                 font = gFont("Regular", 20)
 477                 offset = eSize(20, 5)
 478
 479                 for title in windowstyle.findall("title"):
 480                         get_attr = title.attrib.get
 481                         offset = parseSize(get_attr("offset"), ((1,1),(1,1)))
 482                         font = parseFont(get_attr("font"), ((1,1),(1,1)))
 483
 484                 style.setTitleFont(font);
 485                 style.setTitleOffset(offset)
 486                 #print "  ", font, offset
 487
 488                 for borderset in windowstyle.findall("borderset"):
 489                         bsName = str(borderset.attrib.get("name"))
 490                         for pixmap in borderset.findall("pixmap"):
 491                                 get_attr = pixmap.attrib.get
 492                                 bpName = get_attr("pos")
 493                                 filename = get_attr("filename")
 494                                 if filename and bpName:
 495                                         png = loadPixmap(resolveFilename(SCOPE_SKIN_IMAGE, filename, path_prefix=path_prefix), desktop)
 496                                         style.setPixmap(eWindowStyleSkinned.__dict__[bsName], eWindowStyleSkinned.__dict__[bpName], png)
 497                                 #print "  borderset:", bpName, filename
 498
 499                 for color in windowstyle.findall("color"):
 500                         get_attr = color.attrib.get
 501                         colorType = get_attr("name")
 502                         color = parseColor(get_attr("color"))
 503                         try:
 504                                 style.setColor(eWindowStyleSkinned.__dict__["col" + colorType], color)
 505                         except:
 506                                 raise SkinError("Unknown color %s" % (colorType))
 507                                 #pass
 508
 509                         #print "  color:", type, color
 510
 511                 x = eWindowStyleManager.getInstance()
 512                 x.setStyle(id, style)
 513
 514 display_skin_id = 1
 515 dom_screens = {}
 516
 517 def loadSkinData(desktop):
 518         global dom_skins, dom_screens, display_skin_id
 519         skins = dom_skins[:]
 520         skins.reverse()
 521         for (path, dom_skin) in skins:
 522                 loadSingleSkinData(desktop, dom_skin, path)
 523
 524                 for elem in dom_skin:
 525                         if elem.tag == 'screen':
 526                                 name = elem.attrib.get('name', None)
 527                                 if name:
 528                                         sid = elem.attrib.get('id', None)
 529                                         if sid and (int(sid) != display_skin_id):
 530                                                 # not for this display
 531                                                 elem.clear()
 532                                                 continue
 533                                         if name in dom_screens:
 534                                                 # Kill old versions, save memory
 535                                                 dom_screens[name][0].clear()
 536                                         dom_screens[name] = (elem, path)
 537                                 else:
 538                                         # without name, it's useless!
 539                                         elem.clear()
 540                         else:
 541                                 # non-screen element, no need for it any longer
 542                                 elem.clear()
 543         # no longer needed, we know where the screens are now.
 544         del dom_skins
 545
 546 def lookupScreen(name, style_id):
 547         if dom_screens.has_key(name):
 548                 elem, path = dom_screens[name]
 549                 screen_style_id = elem.attrib.get('id', '-1')
 550                 if screen_style_id == '-1' and name.find('ummary') > 0:
 551                         screen_style_id = '1'
 552                 if (style_id != 2 and int(screen_style_id) == -1) or int(screen_style_id) == style_id:
 553                         return elem, path
 554
 555         return None, None
 556
 557 class additionalWidget:
 558         pass
 559
 560 # Class that makes a tuple look like something else. Some plugins just assume
 561 # that size is a string and try to parse it. This class makes that work.
 562 class SizeTuple(tuple):
 563         def split(self, *args):
 564                 return (str(self[0]), str(self[1]))
 565         def strip(self, *args):
 566                 return '%s,%s' % self
 567         def __str__(self):
 568                 return '%s,%s' % self
 569
 570 class SkinContext:
 571         def __init__(self, parent=None, pos=None, size=None):
 572                 if parent is not None:
 573                         if pos is not None:
 574                                 pos, size = parent.parse(pos, size)
 575                                 self.x, self.y = pos
 576                                 self.w, self.h = size
 577                         else:
 578                                 self.x = None
 579                                 self.y = None
 580                                 self.w = None
 581                                 self.h = None
 582         def __str__(self):
 583                 return "Context (%s,%s)+(%s,%s) " % (self.x, self.y, self.w, self.h)
 584         def parse(self, pos, size):
 585                 if pos == "fill":
 586                         pos = (self.x, self.y)
 587                         size = (self.w, self.h)
 588                         self.w = 0
 589                         self.h = 0
 590                 elif pos == "bottom":
 591                         w,h = size.split(',')
 592                         h = int(h)
 593                         pos = (self.x, self.y + self.h - h)
 594                         size = (self.w, h)
 595                         self.h -= h
 596                 elif pos == "top":
 597                         w,h = size.split(',')
 598                         h = int(h)
 599                         pos = (self.x, self.y)
 600                         size = (self.w, h)
 601                         self.h -= h
 602                         self.y += h
 603                 elif pos == "left":
 604                         w,h = size.split(',')
 605                         w = int(w)
 606                         pos = (self.x, self.y)
 607                         size = (w, self.h)
 608                         self.x += w
 609                         self.w -= w
 610                 elif pos == "right":
 611                         w,h = size.split(',')
 612                         w = int(w)
 613                         pos = (self.x + self.w - w, self.y)
 614                         size = (w, self.h)
 615                         self.w -= w
 616                 else:
 617                         size = size.split(',')
 618                         size = (parseCoordinate(size[0], self.w), parseCoordinate(size[1], self.h))
 619                         pos = pos.split(',')
 620                         pos = (self.x + parseCoordinate(pos[0], self.w, size[0]), self.y + parseCoordinate(pos[1], self.h, size[1]))
 621                 return (SizeTuple(pos), SizeTuple(size))
 622
 623 class SkinContextStack(SkinContext):
 624         # A context that stacks things instead of aligning them
 625         def parse(self, pos, size):
 626                 if pos == "fill":
 627                         pos = (self.x, self.y)
 628                         size = (self.w, self.h)
 629                 elif pos == "bottom":
 630                         w,h = size.split(',')
 631                         h = int(h)
 632                         pos = (self.x, self.y + self.h - h)
 633                         size = (self.w, h)
 634                 elif pos == "top":
 635                         w,h = size.split(',')
 636                         h = int(h)
 637                         pos = (self.x, self.y)
 638                         size = (self.w, h)
 639                 elif pos == "left":
 640                         w,h = size.split(',')
 641                         w = int(w)
 642                         pos = (self.x, self.y)
 643                         size = (w, self.h)
 644                 elif pos == "right":
 645                         w,h = size.split(',')
 646                         w = int(w)
 647                         pos = (self.x + self.w - w, self.y)
 648                         size = (w, self.h)
 649                 else:
 650                         size = size.split(',')
 651                         size = (parseCoordinate(size[0], self.w), parseCoordinate(size[1], self.h))
 652                         pos = pos.split(',')
 653                         pos = (self.x + parseCoordinate(pos[0], self.w, size[0]), self.y + parseCoordinate(pos[1], self.h, size[1]))
 654                 return (SizeTuple(pos), SizeTuple(size))
 655
 656 def readSkin(screen, skin, names, desktop):
 657         if not isinstance(names, list):
 658                 names = [names]
 659
 660         name = "<embedded-in-'%s'>" % screen.__class__.__name__
 661
 662         style_id = desktop.getStyleID();
 663
 664         # try all skins, first existing one have priority
 665         for n in names:
 666                 myscreen, path = lookupScreen(n, style_id)
 667                 if myscreen is not None:
 668                         # use this name for debug output
 669                         name = n
 670                         break
 671
 672         # otherwise try embedded skin
 673         if myscreen is None:
 674                 myscreen = getattr(screen, "parsedSkin", None)
 675
 676         # try uncompiled embedded skin
 677         if myscreen is None and getattr(screen, "skin", None):
 678                 print "Looking for embedded skin"
 679                 skin_tuple = screen.skin
 680                 if not isinstance(skin_tuple, tuple):
 681                         skin_tuple = (skin_tuple,)
 682                 for sskin in skin_tuple:
 683                         parsedSkin = xml.etree.cElementTree.fromstring(sskin)
 684                         screen_style_id = parsedSkin.attrib.get('id', '-1')
 685                         if (style_id != 2 and int(screen_style_id) == -1) or int(screen_style_id) == style_id:
 686                                 myscreen = screen.parsedSkin = parsedSkin
 687                                 break
 688
 689         #assert myscreen is not None, "no skin for screen '" + repr(names) + "' found!"
 690         if myscreen is None:
 691                 print "No skin to read..."
 692                 emptySkin = "<screen></screen>"
 693                 myscreen = screen.parsedSkin = xml.etree.cElementTree.fromstring(emptySkin)
 694
 695         screen.skinAttributes = [ ]
 696
 697         skin_path_prefix = getattr(screen, "skin_path", path)
 698
 699 #       collectAttributes(screen.skinAttributes, myscreen, skin_path_prefix, ignore=["name"])
 700
 701         context = SkinContext()
 702         s = desktop.size()
 703         context.x = 0
 704         context.y = 0
 705         context.w = s.width()
 706         context.h = s.height()
 707         del s
 708         collectAttributes(screen.skinAttributes, myscreen, context, skin_path_prefix, ignore=("name",))
 709         context = SkinContext(context, myscreen.attrib.get('position'), myscreen.attrib.get('size'))
 710
 711 #
 712
 713         screen.additionalWidgets = [ ]
 714         screen.renderer = [ ]
 715
 716         visited_components = set()
 717
 718         # now walk all widgets and stuff
 719         def process_none(widget, context):
 720                 pass
 721
 722         def process_widget(widget, context):
 723                 get_attr = widget.attrib.get
 724                 # ok, we either have 1:1-mapped widgets ('old style'), or 1:n-mapped
 725                 # widgets (source->renderer).
 726
 727                 wname = get_attr('name')
 728                 wsource = get_attr('source')
 729
 730                 if wname is None and wsource is None:
 731                         print "widget has no name and no source!"
 732                         return
 733
 734                 if wname:
 735                         #print "Widget name=", wname
 736                         visited_components.add(wname)
 737
 738                         # get corresponding 'gui' object
 739                         try:
 740                                 attributes = screen[wname].skinAttributes = [ ]
 741                         except:
 742                                 raise SkinError("component with name '" + wname + "' was not found in skin of screen '" + name + "'!")
 743                                 #print "WARNING: component with name '" + wname + "' was not found in skin of screen '" + name + "'!"
 744
 745 #                       assert screen[wname] is not Source
 746
 747                         # and collect attributes for this
 748                         collectAttributes(attributes, widget, context, skin_path_prefix, ignore=['name'])
 749                 elif wsource:
 750                         # get corresponding source
 751                         #print "Widget source=", wsource
 752
 753                         while True: # until we found a non-obsolete source
 754
 755                                 # parse our current "wsource", which might specifiy a "related screen" before the dot,
 756                                 # for example to reference a parent, global or session-global screen.
 757                                 scr = screen
 758
 759                                 # resolve all path components
 760                                 path = wsource.split('.')
 761                                 while len(path) > 1:
 762                                         scr = screen.getRelatedScreen(path[0])
 763                                         if scr is None:
 764                                                 #print wsource
 765                                                 #print name
 766                                                 raise SkinError("specified related screen '" + wsource + "' was not found in screen '" + name + "'!")
 767                                         path = path[1:]
 768
 769                                 # resolve the source.
 770                                 source = scr.get(path[0])
 771                                 if isinstance(source, ObsoleteSource):
 772                                         # however, if we found an "obsolete source", issue warning, and resolve the real source.
 773                                         print "WARNING: SKIN '%s' USES OBSOLETE SOURCE '%s', USE '%s' INSTEAD!" % (name, wsource, source.new_source)
 774                                         print "OBSOLETE SOURCE WILL BE REMOVED %s, PLEASE UPDATE!" % (source.removal_date)
 775                                         if source.description:
 776                                                 print source.description
 777
 778                                         wsource = source.new_source
 779                                 else:
 780                                         # otherwise, use that source.
 781                                         break
 782
 783                         if source is None:
 784                                 raise SkinError("source '" + wsource + "' was not found in screen '" + name + "'!")
 785
 786                         wrender = get_attr('render')
 787
 788                         if not wrender:
 789                                 raise SkinError("you must define a renderer with render= for source '%s'" % (wsource))
 790
 791                         for converter in widget.findall("convert"):
 792                                 ctype = converter.get('type')
 793                                 assert ctype, "'convert'-tag needs a 'type'-attribute"
 794                                 #print "Converter:", ctype
 795                                 try:
 796                                         parms = converter.text.strip()
 797                                 except:
 798                                         parms = ""
 799                                 #print "Params:", parms
 800                                 converter_class = my_import('.'.join(("Components", "Converter", ctype))).__dict__.get(ctype)
 801
 802                                 c = None
 803
 804                                 for i in source.downstream_elements:
 805                                         if isinstance(i, converter_class) and i.converter_arguments == parms:
 806                                                 c = i
 807
 808                                 if c is None:
 809                                         print "allocating new converter!"
 810                                         c = converter_class(parms)
 811                                         c.connect(source)
 812                                 else:
 813                                         print "reused converter!"
 814
 815                                 source = c
 816
 817                         renderer_class = my_import('.'.join(("Components", "Renderer", wrender))).__dict__.get(wrender)
 818
 819                         renderer = renderer_class() # instantiate renderer
 820
 821                         renderer.connect(source) # connect to source
 822                         attributes = renderer.skinAttributes = [ ]
 823                         collectAttributes(attributes, widget, context, skin_path_prefix, ignore=['render', 'source'])
 824
 825                         screen.renderer.append(renderer)
 826
 827         def process_applet(widget, context):
 828                 try:
 829                         codeText = widget.text.strip()
 830                 except:
 831                         codeText = ""
 832
 833                 #print "Found code:"
 834                 #print codeText
 835                 widgetType = widget.attrib.get('type')
 836
 837                 code = compile(codeText, "skin applet", "exec")
 838
 839                 if widgetType == "onLayoutFinish":
 840                         screen.onLayoutFinish.append(code)
 841                         #print "onLayoutFinish = ", codeText
 842                 else:
 843                         raise SkinError("applet type '%s' unknown!" % widgetType)
 844                         #print "applet type '%s' unknown!" % type
 845
 846         def process_elabel(widget, context):
 847                 w = additionalWidget()
 848                 w.widget = eLabel
 849                 w.skinAttributes = [ ]
 850                 collectAttributes(w.skinAttributes, widget, context, skin_path_prefix, ignore=['name'])
 851                 screen.additionalWidgets.append(w)
 852
 853         def process_epixmap(widget, context):
 854                 w = additionalWidget()
 855                 w.widget = ePixmap
 856                 w.skinAttributes = [ ]
 857                 collectAttributes(w.skinAttributes, widget, context, skin_path_prefix, ignore=['name'])
 858                 screen.additionalWidgets.append(w)
 859
 860         def process_screen(widget, context):
 861                 for w in widget.findall("widget"):
 862                         process_widget(w, context)
 863
 864                 for w in widget.getchildren():
 865                         if w.tag == "widget":
 866                                 continue
 867
 868                         p = processors.get(w.tag, process_none)
 869                         p(w, context)
 870
 871         def process_panel(widget, context):
 872                 n = widget.attrib.get('name')
 873                 if n:
 874                         try:
 875                                 s = dom_screens.get(n, None)
 876                         except KeyError:
 877                                 print "[SKIN] Unable to find screen '%s' referred in screen '%s'" % (n, name)
 878                         else:
 879                                 process_screen(s[0], context)
 880
 881                 layout = widget.attrib.get('layout')
 882                 if layout == 'stack':
 883                         cc = SkinContextStack
 884                 else:
 885                         cc = SkinContext
 886                 try:
 887                         c = cc(context, widget.attrib.get('position'), widget.attrib.get('size'))
 888                 except Exception, ex:
 889                         raise SkinError("Failed to create skincontext (%s,%s) in %s: %s" % (widget.attrib.get('position'), widget.attrib.get('size'), context, ex) )
 890
 891                 process_screen(widget, c)
 892
 893         processors = {
 894                 None: process_none,
 895                 "widget": process_widget,
 896                 "applet": process_applet,
 897                 "eLabel": process_elabel,
 898                 "ePixmap": process_epixmap,
 899                 "panel": process_panel
 900         }
 901
 902         try:
 903                 context.x = 0 # reset offsets, all components are relative to screen
 904                 context.y = 0 # coordinates.
 905                 process_screen(myscreen, context)
 906         except SkinError, e:
 907                         print "[Skin] SKIN ERROR:", e
 908
 909         from Components.GUIComponent import GUIComponent
 910         nonvisited_components = [x for x in set(screen.keys()) - visited_components if isinstance(x, GUIComponent)]
 911         assert not nonvisited_components, "the following components in %s don't have a skin entry: %s" % (name, ', '.join(nonvisited_components))
 912         # This may look pointless, but it unbinds 'screen' from the nested scope. A better
 913         # solution is to avoid the nested scope above and use the context object to pass
 914         # things around.
 915         screen = None
 916         visited_components = None
 917