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