tools/svg2skin.py

   1 #!/usr/bin/python
   2 # don't expect too much.
   3 # this is a really simple&stupid svg parser, which will use rectangles
   4 # and text fields to produce <widget> snippets for a skin.
   5 # use object "id" fields for source names if you want.
   6 # extracting font information is buggy.
   7 # if you want text fields, please use flow text regions, instead of simple
   8 # text. otherwise, width and height are unknown.
   9 #
  10 # tested only with a single inkscape-generated SVG.
  11
  12 import sys
  13 import os
  14 import string
  15 from xml.sax import make_parser
  16 from xml.sax.handler import ContentHandler
  17
  18 def getattrs(attrs, *a):
  19         res = []
  20         for x in a:
  21                 res.append(float(attrs[x]))
  22         return res
  23
  24 def parsedict(attrs):
  25         if not attrs:
  26                 return []
  27         d = attrs.split(';')
  28         r = { }
  29         for x in d:
  30                 (key, val) = x.split(':')
  31                 r[key] = val
  32         return r
  33
  34 def px(x):
  35         return int(float(x[:-2]) + .5)
  36
  37 def contains(box_o, box_i):
  38         return box_o[0] <= box_i[0] and box_o[1] <= box_i[1] and box_o[2] >= box_i[2] and box_o[3] >= box_i[3]
  39
  40 class parseXML(ContentHandler):
  41         def __init__(self):
  42                 self.isPointsElement, self.isReboundsElement = 0, 0
  43                 self.bbox = None
  44                 self.find_bbox = False
  45                 self.flow = None
  46
  47         def startElement(self, name, attrs):
  48                 if self.find_bbox:
  49                         if name != "rect":
  50                                 return
  51                         box = getattrs(attrs, "x", "y", "width", "height")
  52                         if not self.bbox or contains(box, self.bbox):
  53                                 self.bbox = box
  54                         return
  55
  56                 if name == "rect":
  57                         (x, y, width, height) = getattrs(attrs, "x", "y", "width", "height")
  58                         x -= self.bbox[0]
  59                         y -= self.bbox[1]
  60                         id = attrs["id"]
  61                         if self.flow:
  62                                 id = self.flow
  63                                 self.flow = None
  64                         styles = parsedict(attrs.get("style", ""))
  65                 elif name == "text":
  66                         (x, y) = getattrs(attrs, "x", "y")
  67                         x -= self.bbox[0]
  68                         y -= self.bbox[1]
  69                         width, height = 0, 0
  70                         styles = parsedict(attrs["style"])
  71                         id = attrs["id"]
  72                 elif name == "flowRoot":
  73                         self.flow = attrs["id"]
  74                         return
  75                 else:
  76                         return
  77
  78                 if "font-size" in styles:
  79                         font = ' font="Regular;%d"' % px(styles["font-size"])
  80                 else:
  81                         font = ""
  82                 print """\t\t<widget source="%s" render="Label" position="%d,%d" size="%d,%d" %s />""" % (id, x, y, width, height, font)
  83
  84 parser = make_parser()
  85 contentHandler = parseXML()
  86 parser.setContentHandler(contentHandler)
  87 contentHandler.find_bbox = True
  88 parser.parse(sys.argv[1])
  89 bboxi = tuple([int(x) for x in contentHandler.bbox])
  90 contentHandler.find_bbox = False
  91 print '\t<screen name="" position="%d,%d" size="%d,%d" title="">' % bboxi
  92 parser.parse(sys.argv[1])
  93 print '\t</screen>'