skin.py

   1 import xml.dom.minidom
   2 from os import path
   3
   4 from enigma import eSize, ePoint, gFont, eWindow, eLabel, ePixmap, eWindowStyleManager, \
   5         addFont, gRGB, eWindowStyleSkinned
   6
   7 from Components.config import ConfigSubsection, ConfigText, config
   8 from Components.Converter.Converter import Converter
   9 from Components.Sources.Source import Source, ObsoleteSource
  10 from Tools.Directories import resolveFilename, SCOPE_SKIN, SCOPE_SKIN_IMAGE, SCOPE_FONTS
  11 from Tools.Import import my_import
  12 from Tools.LoadPixmap import LoadPixmap
  13
  14 from Tools.XMLTools import elementsWithTag, mergeText
  15
  16 colorNames = dict()
  17
  18 def dump(x, i=0):
  19         print " " * i + str(x)
  20         try:
  21                 for n in x.childNodes:
  22                         dump(n, i + 1)
  23         except:
  24                 None
  25
  26 class SkinError(Exception):
  27         def __init__(self, message):
  28                 self.message = message
  29
  30         def __str__(self):
  31                 return self.message
  32
  33 dom_skins = [ ]
  34
  35 def loadSkin(name):
  36         # read the skin
  37         filename = resolveFilename(SCOPE_SKIN, name)
  38         mpath = path.dirname(filename) + "/"
  39         dom_skins.append((mpath, xml.dom.minidom.parse(filename)))
  40
  41 # we do our best to always select the "right" value
  42 # skins are loaded in order of priority: skin with
  43 # highest priority is loaded last, usually the user-provided
  44 # skin.
  45
  46 # currently, loadSingleSkinData (colors, bordersets etc.)
  47 # are applied one-after-each, in order of ascending priority.
  48 # the dom_skin will keep all screens in descending priority,
  49 # so the first screen found will be used.
  50
  51 # example: loadSkin("nemesis_greenline/skin.xml")
  52 config.skin = ConfigSubsection()
  53 config.skin.primary_skin = ConfigText(default = "skin.xml")
  54
  55 try:
  56         loadSkin(config.skin.primary_skin.value)
  57 except (SkinError, IOError, AssertionError), err:
  58         print "SKIN ERROR:", err
  59         print "defaulting to standard skin..."
  60         config.skin.primary_skin.value = 'skin.xml'
  61         loadSkin('skin.xml')
  62
  63 loadSkin('skin_default.xml')
  64
  65 def parsePosition(str):
  66         x, y = str.split(',')
  67         return ePoint(int(x), int(y))
  68
  69 def parseSize(str):
  70         x, y = str.split(',')
  71         return eSize(int(x), int(y))
  72
  73 def parseFont(str):
  74         name, size = str.split(';')
  75         return gFont(name, int(size))
  76
  77 def parseColor(str):
  78         if str[0] != '#':
  79                 try:
  80                         return colorNames[str]
  81                 except:
  82                         raise SkinError("color '%s' must be #aarrggbb or valid named color" % (str))
  83         return gRGB(int(str[1:], 0x10))
  84
  85 def collectAttributes(skinAttributes, node, skin_path_prefix=None, ignore=[]):
  86         # walk all attributes
  87         for p in range(node.attributes.length):
  88                 a = node.attributes.item(p)
  89
  90                 # convert to string (was: unicode)
  91                 attrib = str(a.name)
  92                 # TODO: localization? as in e1?
  93                 value = a.value.encode("utf-8")
  94
  95                 if attrib in ["pixmap", "pointer", "seek_pointer", "backgroundPixmap", "selectionPixmap"]:
  96                         value = resolveFilename(SCOPE_SKIN_IMAGE, value, path_prefix=skin_path_prefix)
  97
  98                 if attrib not in ignore:
  99                         skinAttributes.append((attrib, value))
 100
 101 def loadPixmap(path, desktop):
 102         ptr = LoadPixmap(path, desktop)
 103         if ptr is None:
 104                 raise SkinError("pixmap file %s not found!" % (path))
 105         return ptr
 106
 107 def applySingleAttribute(guiObject, desktop, attrib, value):
 108         # and set attributes
 109         try:
 110                 if attrib == 'position':
 111                         guiObject.move(parsePosition(value))
 112                 elif attrib == 'size':
 113                         guiObject.resize(parseSize(value))
 114                 elif attrib == 'title':
 115                         guiObject.setTitle(_(value))
 116                 elif attrib == 'text':
 117                         guiObject.setText(_(value))
 118                 elif attrib == 'font':
 119                         guiObject.setFont(parseFont(value))
 120                 elif attrib == 'zPosition':
 121                         guiObject.setZPosition(int(value))
 122                 elif attrib in ["pixmap", "backgroundPixmap", "selectionPixmap"]:
 123                         ptr = loadPixmap(value, desktop) # this should already have been filename-resolved.
 124                         if attrib == "pixmap":
 125                                 guiObject.setPixmap(ptr)
 126                         elif attrib == "backgroundPixmap":
 127                                 guiObject.setBackgroundPicture(ptr)
 128                         elif attrib == "selectionPixmap":
 129                                 guiObject.setSelectionPicture(ptr)
 130                         # guiObject.setPixmapFromFile(value)
 131                 elif attrib == "alphatest": # used by ePixmap
 132                         guiObject.setAlphatest(
 133                                 { "on": 1,
 134                                   "off": 0,
 135                                   "blend": 2,
 136                                 }[value])
 137                 elif attrib == "orientation": # used by eSlider
 138                         try:
 139                                 guiObject.setOrientation(
 140                                         { "orVertical": guiObject.orVertical,
 141                                                 "orHorizontal": guiObject.orHorizontal
 142                                         }[value])
 143                         except KeyError:
 144                                 print "oprientation must be either orVertical or orHorizontal!"
 145                 elif attrib == "valign":
 146                         try:
 147                                 guiObject.setVAlign(
 148                                         { "top": guiObject.alignTop,
 149                                                 "center": guiObject.alignCenter,
 150                                                 "bottom": guiObject.alignBottom
 151                                         }[value])
 152                         except KeyError:
 153                                 print "valign must be either top, center or bottom!"
 154                 elif attrib == "halign":
 155                         try:
 156                                 guiObject.setHAlign(
 157                                         { "left": guiObject.alignLeft,
 158                                                 "center": guiObject.alignCenter,
 159                                                 "right": guiObject.alignRight,
 160                                                 "block": guiObject.alignBlock
 161                                         }[value])
 162                         except KeyError:
 163                                 print "halign must be either left, center, right or block!"
 164                 elif attrib == "flags":
 165                         flags = value.split(',')
 166                         for f in flags:
 167                                 try:
 168                                         fv = eWindow.__dict__[f]
 169                                         guiObject.setFlag(fv)
 170                                 except KeyError:
 171                                         print "illegal flag %s!" % f
 172                 elif attrib == "backgroundColor":
 173                         guiObject.setBackgroundColor(parseColor(value))
 174                 elif attrib == "backgroundColorSelected":
 175                         guiObject.setBackgroundColorSelected(parseColor(value))
 176                 elif attrib == "foregroundColor":
 177                         guiObject.setForegroundColor(parseColor(value))
 178                 elif attrib == "foregroundColorSelected":
 179                         guiObject.setForegroundColorSelected(parseColor(value))
 180                 elif attrib == "shadowColor":
 181                         guiObject.setShadowColor(parseColor(value))
 182                 elif attrib == "selectionDisabled":
 183                         guiObject.setSelectionEnable(0)
 184                 elif attrib == "transparent":
 185                         guiObject.setTransparent(int(value))
 186                 elif attrib == "borderColor":
 187                         guiObject.setBorderColor(parseColor(value))
 188                 elif attrib == "borderWidth":
 189                         guiObject.setBorderWidth(int(value))
 190                 elif attrib == "scrollbarMode":
 191                         guiObject.setScrollbarMode(
 192                                 { "showOnDemand": guiObject.showOnDemand,
 193                                         "showAlways": guiObject.showAlways,
 194                                         "showNever": guiObject.showNever
 195                                 }[value])
 196                 elif attrib == "enableWrapAround":
 197                         guiObject.setWrapAround(True)
 198                 elif attrib == "pointer" or attrib == "seek_pointer":
 199                         (name, pos) = value.split(':')
 200                         pos = parsePosition(pos)
 201                         ptr = loadPixmap(name, desktop)
 202                         guiObject.setPointer({"pointer": 0, "seek_pointer": 1}[attrib], ptr, pos)
 203                 elif attrib == 'shadowOffset':
 204                         guiObject.setShadowOffset(parsePosition(value))
 205                 elif attrib == 'noWrap':
 206                         guiObject.setNoWrap(1)
 207                 else:
 208                         raise SkinError("unsupported attribute " + attrib + "=" + value)
 209         except int:
 210 # AttributeError:
 211                 print "widget %s (%s) doesn't support attribute %s!" % ("", guiObject.__class__.__name__, attrib)
 212
 213 def applyAllAttributes(guiObject, desktop, attributes):
 214         for (attrib, value) in attributes:
 215                 applySingleAttribute(guiObject, desktop, attrib, value)
 216
 217 def loadSingleSkinData(desktop, dom_skin, path_prefix):
 218         """loads skin data like colors, windowstyle etc."""
 219
 220         skin = dom_skin.childNodes[0]
 221         assert skin.tagName == "skin", "root element in skin must be 'skin'!"
 222
 223         for c in elementsWithTag(skin.childNodes, "output"):
 224                 id = int(c.getAttribute("id") or "0")
 225                 if id == 0: # framebuffer
 226                         for res in elementsWithTag(c.childNodes, "resolution"):
 227                                 xres = int(res.getAttribute("xres" or "720"))
 228                                 yres = int(res.getAttribute("yres" or "576"))
 229                                 bpp = int(res.getAttribute("bpp" or "32"))
 230
 231                                 from enigma import gFBDC
 232                                 i = gFBDC.getInstance()
 233                                 i.setResolution(xres, yres)
 234
 235                                 if bpp != 32:
 236                                         # load palette (not yet implemented)
 237                                         pass
 238
 239         for c in elementsWithTag(skin.childNodes, "colors"):
 240                 for color in elementsWithTag(c.childNodes, "color"):
 241                         name = str(color.getAttribute("name"))
 242                         color = str(color.getAttribute("value"))
 243
 244                         if not len(color):
 245                                 raise ("need color and name, got %s %s" % (name, color))
 246
 247                         colorNames[name] = parseColor(color)
 248
 249         for c in elementsWithTag(skin.childNodes, "fonts"):
 250                 for font in elementsWithTag(c.childNodes, "font"):
 251                         filename = str(font.getAttribute("filename") or "<NONAME>")
 252                         name = str(font.getAttribute("name") or "Regular")
 253                         scale = int(font.getAttribute("scale") or "100")
 254                         is_replacement = font.getAttribute("replacement") != ""
 255                         addFont(resolveFilename(SCOPE_FONTS, filename, path_prefix=path_prefix), name, scale, is_replacement)
 256
 257         for windowstyle in elementsWithTag(skin.childNodes, "windowstyle"):
 258                 style = eWindowStyleSkinned()
 259                 id = int(windowstyle.getAttribute("id") or "0")
 260
 261                 # defaults
 262                 font = gFont("Regular", 20)
 263                 offset = eSize(20, 5)
 264
 265                 for title in elementsWithTag(windowstyle.childNodes, "title"):
 266                         offset = parseSize(title.getAttribute("offset"))
 267                         font = parseFont(str(title.getAttribute("font")))
 268
 269                 style.setTitleFont(font);
 270                 style.setTitleOffset(offset)
 271
 272                 for borderset in elementsWithTag(windowstyle.childNodes, "borderset"):
 273                         bsName = str(borderset.getAttribute("name"))
 274                         for pixmap in elementsWithTag(borderset.childNodes, "pixmap"):
 275                                 bpName = str(pixmap.getAttribute("pos"))
 276                                 filename = str(pixmap.getAttribute("filename"))
 277
 278                                 png = loadPixmap(resolveFilename(SCOPE_SKIN_IMAGE, filename, path_prefix=path_prefix), desktop)
 279                                 style.setPixmap(eWindowStyleSkinned.__dict__[bsName], eWindowStyleSkinned.__dict__[bpName], png)
 280
 281                 for color in elementsWithTag(windowstyle.childNodes, "color"):
 282                         type = str(color.getAttribute("name"))
 283                         color = parseColor(color.getAttribute("color"))
 284
 285                         try:
 286                                 style.setColor(eWindowStyleSkinned.__dict__["col" + type], color)
 287                         except:
 288                                 raise ("Unknown color %s" % (type))
 289
 290                 x = eWindowStyleManager.getInstance()
 291                 x.setStyle(id, style)
 292
 293 def loadSkinData(desktop):
 294         skins = dom_skins[:]
 295         skins.reverse()
 296         for (path, dom_skin) in skins:
 297                 loadSingleSkinData(desktop, dom_skin, path)
 298
 299 def lookupScreen(name):
 300         for (path, dom_skin) in dom_skins:
 301                 # first, find the corresponding screen element
 302                 skin = dom_skin.childNodes[0]
 303                 for x in elementsWithTag(skin.childNodes, "screen"):
 304                         if x.getAttribute('name') == name:
 305                                 return x, path
 306         return None, None
 307
 308 def readSkin(screen, skin, names, desktop):
 309         if not isinstance(names, list):
 310                 names = [names]
 311
 312         name = "<embedded-in-'%s'>" % screen.__class__.__name__
 313
 314         # try all skins, first existing one have priority
 315         for n in names:
 316                 myscreen, path = lookupScreen(n)
 317                 if myscreen is not None:
 318                         # use this name for debug output
 319                         name = n
 320                         break
 321
 322         # otherwise try embedded skin
 323         myscreen = myscreen or getattr(screen, "parsedSkin", None)
 324
 325         # try uncompiled embedded skin
 326         if myscreen is None and getattr(screen, "skin", None):
 327                 myscreen = screen.parsedSkin = xml.dom.minidom.parseString(screen.skin).childNodes[0]
 328
 329         assert myscreen is not None, "no skin for screen '" + repr(names) + "' found!"
 330
 331         screen.skinAttributes = [ ]
 332
 333         skin_path_prefix = getattr(screen, "skin_path", path)
 334
 335         collectAttributes(screen.skinAttributes, myscreen, skin_path_prefix, ignore=["name"])
 336
 337         screen.additionalWidgets = [ ]
 338         screen.renderer = [ ]
 339
 340         visited_components = set()
 341
 342         # now walk all widgets
 343         for widget in elementsWithTag(myscreen.childNodes, "widget"):
 344                 # ok, we either have 1:1-mapped widgets ('old style'), or 1:n-mapped
 345                 # widgets (source->renderer).
 346
 347                 wname = widget.getAttribute('name')
 348                 wsource = widget.getAttribute('source')
 349
 350
 351                 if wname is None and wsource is None:
 352                         print "widget has no name and no source!"
 353                         continue
 354
 355                 if wname:
 356                         visited_components.add(wname)
 357
 358                         # get corresponding 'gui' object
 359                         try:
 360                                 attributes = screen[wname].skinAttributes = [ ]
 361                         except:
 362                                 raise SkinError("component with name '" + wname + "' was not found in skin of screen '" + name + "'!")
 363
 364 #                       assert screen[wname] is not Source
 365
 366                         # and collect attributes for this
 367                         collectAttributes(attributes, widget, skin_path_prefix, ignore=['name'])
 368                 elif wsource:
 369                         # get corresponding source
 370
 371                         while True: # until we found a non-obsolete source
 372
 373                                 # parse our current "wsource", which might specifiy a "related screen" before the dot,
 374                                 # for example to reference a parent, global or session-global screen.
 375                                 scr = screen
 376
 377                                 # resolve all path components
 378                                 path = wsource.split('.')
 379                                 while len(path) > 1:
 380                                         scr = screen.getRelatedScreen(path[0])
 381                                         if scr is None:
 382                                                 print wsource
 383                                                 print name
 384                                                 raise SkinError("specified related screen '" + wsource + "' was not found in screen '" + name + "'!")
 385                                         path = path[1:]
 386
 387                                 # resolve the source.
 388                                 source = scr.get(path[0])
 389                                 if isinstance(source, ObsoleteSource):
 390                                         # however, if we found an "obsolete source", issue warning, and resolve the real source.
 391                                         print "WARNING: SKIN '%s' USES OBSOLETE SOURCE '%s', USE '%s' INSTEAD!" % (name, wsource, source.new_source)
 392                                         print "OBSOLETE SOURCE WILL BE REMOVED %s, PLEASE UPDATE!" % (source.removal_date)
 393                                         if source.description:
 394                                                 print source.description
 395
 396                                         wsource = source.new_source
 397                                 else:
 398                                         # otherwise, use that source.
 399                                         break
 400
 401                         if source is None:
 402                                 raise SkinError("source '" + wsource + "' was not found in screen '" + name + "'!")
 403
 404                         wrender = widget.getAttribute('render')
 405
 406                         if not wrender:
 407                                 raise SkinError("you must define a renderer with render= for source '%s'" % (wsource))
 408
 409                         for converter in elementsWithTag(widget.childNodes, "convert"):
 410                                 ctype = converter.getAttribute('type')
 411                                 assert ctype, "'convert'-tag needs a 'type'-attribute"
 412                                 parms = mergeText(converter.childNodes).strip()
 413                                 converter_class = my_import('.'.join(["Components", "Converter", ctype])).__dict__.get(ctype)
 414
 415                                 c = None
 416
 417                                 for i in source.downstream_elements:
 418                                         if isinstance(i, converter_class) and i.converter_arguments == parms:
 419                                                 c = i
 420
 421                                 if c is None:
 422                                         print "allocating new converter!"
 423                                         c = converter_class(parms)
 424                                         c.connect(source)
 425                                 else:
 426                                         print "reused converter!"
 427
 428                                 source = c
 429
 430                         renderer_class = my_import('.'.join(["Components", "Renderer", wrender])).__dict__.get(wrender)
 431
 432                         renderer = renderer_class() # instantiate renderer
 433
 434                         renderer.connect(source) # connect to source
 435                         attributes = renderer.skinAttributes = [ ]
 436                         collectAttributes(attributes, widget, skin_path_prefix, ignore=['render', 'source'])
 437
 438                         screen.renderer.append(renderer)
 439
 440         from Components.GUIComponent import GUIComponent
 441         nonvisited_components = [x for x in set(screen.keys()) - visited_components if isinstance(x, GUIComponent)]
 442
 443         assert not nonvisited_components, "the following components in %s don't have a skin entry: %s" % (name, ', '.join(nonvisited_components))
 444
 445         # now walk additional objects
 446         for widget in elementsWithTag(myscreen.childNodes, lambda x: x != "widget"):
 447                 if widget.tagName == "applet":
 448                         codeText = mergeText(widget.childNodes).strip()
 449                         type = widget.getAttribute('type')
 450
 451                         code = compile(codeText, "skin applet", "exec")
 452
 453                         if type == "onLayoutFinish":
 454                                 screen.onLayoutFinish.append(code)
 455                         else:
 456                                 raise SkinError("applet type '%s' unknown!" % type)
 457
 458                         continue
 459
 460                 class additionalWidget:
 461                         pass
 462
 463                 w = additionalWidget()
 464
 465                 if widget.tagName == "eLabel":
 466                         w.widget = eLabel
 467                 elif widget.tagName == "ePixmap":
 468                         w.widget = ePixmap
 469                 else:
 470                         raise SkinError("unsupported stuff : %s" % widget.tagName)
 471
 472                 w.skinAttributes = [ ]
 473                 collectAttributes(w.skinAttributes, widget, skin_path_prefix, ignore=['name'])
 474
 475                 # applyAttributes(guiObject, widget, desktop)
 476                 # guiObject.thisown = 0
 477                 screen.additionalWidgets.append(w)