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