add support for render pixmaps with transparent background
[openblackhole/openblackhole-enigma2.git] / skin.py
1 from enigma import *
2 import xml.dom.minidom
3 from xml.dom import EMPTY_NAMESPACE
4
5 from Tools.XMLTools import elementsWithTag, mergeText
6
7 colorNames = dict()
8
9 def dump(x, i=0):
10         print " " * i + str(x)
11         try:
12                 for n in x.childNodes:
13                         dump(n, i + 1)
14         except:
15                 None
16
17 # read the skin
18 try:
19         # first we search in the current path
20         skinfile = file('data/skin.xml', 'r')
21 except:
22         # if not found in the current path, we use the global datadir-path
23         skinfile = file('/usr/share/enigma2/skin.xml', 'r')
24 dom = xml.dom.minidom.parseString(skinfile.read())
25 skinfile.close()
26
27
28 def parsePosition(str):
29         x, y = str.split(',')
30         return ePoint(int(x), int(y))
31
32 def parseSize(str):
33         x, y = str.split(',')
34         return eSize(int(x), int(y))
35
36 def parseFont(str):
37         name, size = str.split(';')
38         return gFont(name, int(size))
39
40 def parseColor(str):
41         if str[0] != '#':
42                 try:
43                         return colorNames[str]
44                 except:
45                         raise ("color '%s' must be #aarrggbb or valid named color" % (str))
46         return gRGB(int(str[1:], 0x10))
47
48 def collectAttributes(skinAttributes, node):
49         # walk all attributes
50         for p in range(node.attributes.length):
51                 a = node.attributes.item(p)
52                 
53                 # convert to string (was: unicode)
54                 attrib = str(a.name)
55                 # TODO: proper UTF8 translation?! (for value)
56                 # TODO: localization? as in e1?
57                 value = str(a.value)
58                 
59                 skinAttributes.append((attrib, value))
60
61 def applySingleAttribute(guiObject, desktop, attrib, value):            
62         # and set attributes
63         try:
64                 if attrib == 'position':
65                         guiObject.move(parsePosition(value))
66                 elif attrib == 'size':
67                         guiObject.resize(parseSize(value))
68                 elif attrib == 'title':
69                         guiObject.setTitle(_(value))
70                 elif attrib == 'text':
71                         guiObject.setText(value)
72                 elif attrib == 'font':
73                         guiObject.setFont(parseFont(value))
74                 elif attrib == 'zPosition':
75                         guiObject.setZPosition(int(value))
76                 elif attrib == "pixmap":
77                         ptr = gPixmapPtr()
78                         if loadPNG(ptr, value):
79                                 raise "loading PNG failed!"
80                         x = ptr
81                         ptr = ptr.__deref__()
82                         desktop.makeCompatiblePixmap(ptr)
83                         guiObject.setPixmap(ptr)
84                         # guiObject.setPixmapFromFile(value)
85                 elif attrib == "alphatest": # used by ePixmap
86                         guiObject.setAlphatest(
87                                 { "on": True,
88                                   "off": False
89                                 }[value])
90                 elif attrib == "orientation": # used by eSlider
91                         try:
92                                 guiObject.setOrientation(
93                                         { "orVertical": guiObject.orVertical,
94                                                 "orHorizontal": guiObject.orHorizontal
95                                         }[value])
96                         except KeyError:
97                                 print "oprientation must be either orVertical or orHorizontal!"
98                 elif attrib == "valign":
99                         try:
100                                 guiObject.setVAlign(
101                                         { "top": guiObject.alignTop,
102                                                 "center": guiObject.alignCenter,
103                                                 "bottom": guiObject.alignBottom
104                                         }[value])
105                         except KeyError:
106                                 print "valign must be either top, center or bottom!"
107                 elif attrib == "halign":
108                         try:
109                                 guiObject.setHAlign(
110                                         { "left": guiObject.alignLeft,
111                                                 "center": guiObject.alignCenter,
112                                                 "right": guiObject.alignRight,
113                                                 "block": guiObject.alignBlock
114                                         }[value])
115                         except KeyError:
116                                 print "halign must be either left, center, right or block!"
117                 elif attrib == "flags":
118                         flags = value.split(',')
119                         for f in flags:
120                                 try:
121                                         fv = eWindow.__dict__[f]
122                                         guiObject.setFlag(fv)
123                                 except KeyError:
124                                         print "illegal flag %s!" % f
125                 elif attrib == "backgroundColor":
126                         guiObject.setBackgroundColor(parseColor(value))
127                 elif attrib == "foregroundColor":
128                         guiObject.setForegroundColor(parseColor(value))
129                 elif attrib != 'name':
130                         print "unsupported attribute " + attrib + "=" + value
131         except int:
132 # AttributeError:
133                 print "widget %s (%s) doesn't support attribute %s!" % ("", guiObject.__class__.__name__, attrib)
134
135 def applyAllAttributes(guiObject, desktop, attributes):
136         for (attrib, value) in attributes:
137                 applySingleAttribute(guiObject, desktop, attrib, value)
138
139 def loadSkin(desktop):
140         print "loading skin..."
141         
142         def getPNG(x):
143                 g = gPixmapPtr()
144                 loadPNG(g, x)
145                 g = g.grabRef()
146                 return g
147         
148         skin = dom.childNodes[0]
149         assert skin.tagName == "skin", "root element in skin must be 'skin'!"
150         
151         for c in elementsWithTag(skin.childNodes, "colors"):
152                 for color in elementsWithTag(c.childNodes, "color"):
153                         name = str(color.getAttribute("name"))
154                         color = str(color.getAttribute("value"))
155                         
156                         if not len(color):
157                                 raise ("need color and name, got %s %s" % (name, color))
158                                 
159                         colorNames[name] = parseColor(color)
160         
161         for windowstyle in elementsWithTag(skin.childNodes, "windowstyle"):
162                 style = eWindowStyleSkinned()
163                 
164                 style.setTitleFont(gFont("Arial", 20));
165                 style.setTitleOffset(eSize(20, 5));
166                 
167                 for borderset in elementsWithTag(windowstyle.childNodes, "borderset"):
168                         bsName = str(borderset.getAttribute("name"))
169                         for pixmap in elementsWithTag(borderset.childNodes, "pixmap"):
170                                 bpName = str(pixmap.getAttribute("pos"))
171                                 filename = str(pixmap.getAttribute("filename"))
172                                 
173                                 png = getPNG(filename)
174                                 
175                                 # adapt palette
176                                 desktop.makeCompatiblePixmap(png)
177                                 style.setPixmap(eWindowStyleSkinned.__dict__[bsName], eWindowStyleSkinned.__dict__[bpName], png)
178
179                 for color in elementsWithTag(windowstyle.childNodes, "color"):
180                         type = str(color.getAttribute("name"))
181                         color = parseColor(color.getAttribute("color"))
182                         
183                         try:
184                                 style.setColor(eWindowStyleSkinned.__dict__["col" + type], color)
185                         except:
186                                 raise ("Unknown color %s" % (type))
187                         
188                 x = eWindowStyleManagerPtr()
189                 eWindowStyleManager.getInstance(x)
190                 x.setStyle(style)
191
192 def readSkin(screen, skin, name, desktop):
193         myscreen = None
194         
195         # first, find the corresponding screen element
196         skin = dom.childNodes[0]
197         
198         for x in elementsWithTag(skin.childNodes, "screen"):
199                 if x.getAttribute('name') == name:
200                         myscreen = x
201         del skin
202         
203         if myscreen is None:
204                 # try embedded skin
205                 print screen.__dict__
206                 if "parsedSkin" in screen.__dict__:
207                         myscreen = screen.parsedSkin
208                 elif "skin" in screen.__dict__:
209                         myscreen = screen.parsedSkin = xml.dom.minidom.parseString(screen.skin).childNodes[0]
210         
211         assert myscreen is not None, "no skin for screen '" + name + "' found!"
212
213         screen.skinAttributes = [ ]
214         collectAttributes(screen.skinAttributes, myscreen)
215         
216         screen.additionalWidgets = [ ]
217         
218         # now walk all widgets
219         for widget in elementsWithTag(myscreen.childNodes, "widget"):
220                 wname = widget.getAttribute('name')
221                 if wname == None:
222                         print "widget has no name!"
223                         continue
224                 
225                 # get corresponding gui object
226                 try:
227                         attributes = screen[wname].skinAttributes = [ ]
228                 except:
229                         raise str("component with name '" + wname + "' was not found in skin of screen '" + name + "'!")
230                 
231                 collectAttributes(attributes, widget)
232
233         # now walk additional objects
234         for widget in elementsWithTag(myscreen.childNodes, lambda x: x != "widget"):
235                 if widget.tagName == "applet":
236                         codeText = mergeText(widget.childNodes).strip()
237                         type = widget.getAttribute('type')
238
239                         code = compile(codeText, "skin applet", "exec")
240                         
241                         if type == "onLayoutFinish":
242                                 screen.onLayoutFinish.append(code)
243                         else:
244                                 raise str("applet type '%s' unknown!" % type)
245                         
246                         continue
247                 
248                 class additionalWidget:
249                         pass
250                 
251                 w = additionalWidget()
252                 
253                 if widget.tagName == "eLabel":
254                         w.widget = eLabel
255                 elif widget.tagName == "ePixmap":
256                         w.widget = ePixmap
257                 else:
258                         raise str("unsupported stuff : %s" % widget.tagName)
259                 
260                 w.skinAttributes = [ ]
261                 collectAttributes(w.skinAttributes, widget)
262                 
263                 # applyAttributes(guiObject, widget, desktop)
264                 # guiObject.thisown = 0
265                 screen.additionalWidgets.append(w)