share/extensions/restack.py

   1 #!/usr/bin/env python
   2 """
   3 Copyright (C) 2007,2008 Rob Antonishen; rob.antonishen@gmail.com
   4
   5 Permission is hereby granted, free of charge, to any person obtaining a copy
   6 of this software and associated documentation files (the "Software"), to deal
   7 in the Software without restriction, including without limitation the rights
   8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9 copies of the Software, and to permit persons to whom the Software is
  10 furnished to do so, subject to the following conditions:
  11
  12 The above copyright notice and this permission notice shall be included in
  13 all copies or substantial portions of the Software.
  14
  15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21 THE SOFTWARE.
  22
  23 """
  24 import inkex, os, csv, math
  25
  26 class Restack(inkex.Effect):
  27     def __init__(self):
  28         inkex.Effect.__init__(self)
  29         self.OptionParser.add_option("-d", "--direction",
  30                         action="store", type="string",
  31                         dest="direction", default="tb",
  32                         help="direction to restack")
  33         self.OptionParser.add_option("-a", "--angle",
  34                         action="store", type="float",
  35                         dest="angle", default=0.0,
  36                         help="arbitrary angle")
  37         self.OptionParser.add_option("-x", "--xanchor",
  38                         action="store", type="string",
  39                         dest="xanchor", default="m",
  40                         help="horizontal point to compare")
  41         self.OptionParser.add_option("-y", "--yanchor",
  42                         action="store", type="string",
  43                         dest="yanchor", default="m",
  44                         help="vertical point to compare")
  45     def effect(self):
  46         if len( self.selected ) > 0:
  47             objlist = []
  48             svg = self.document.getroot()
  49
  50             file = self.args[ -1 ]
  51             #get all bounding boxes in file by calling inkscape again with the --querry-all command line option
  52             #it returns a comma seperated list structured id,x,y,w,h
  53             _,f,err = os.popen3( "inkscape --query-all %s" % ( file ) )
  54             reader=csv.reader( f.readlines() )
  55             f.close()
  56             err.close()
  57
  58             #build a dictionary with id as the key
  59             dimen = dict()
  60             for line in reader:
  61                 dimen[line[0]] = map( float, line[1:])
  62
  63             #find the center of all selected objects **Not the average!
  64             x,y,w,h = dimen[self.selected.keys()[0]]
  65             minx = x
  66             miny = y
  67             maxx = x + w
  68             maxy = y + h
  69
  70             for id, node in self.selected.iteritems():
  71                 # get the bounding box
  72                 x,y,w,h = dimen[id]
  73                 if x < minx:
  74                     minx = x
  75                 if (x + w) > maxx:
  76                     maxx = x + w
  77                 if y < miny:
  78                     miny = y
  79                 if (y + h) > maxy:
  80                     maxy = y + h
  81
  82             midx = (minx + maxx) / 2
  83             midy = (miny + maxy) / 2
  84
  85             #calculate distances fro each selected object
  86             for id, node in self.selected.iteritems():
  87                 # get the bounding box
  88                 x,y,w,h = dimen[id]
  89
  90                 # calc the comparison coords
  91                 if self.options.xanchor == "l":
  92                     cx = x
  93                 elif self.options.xanchor == "r":
  94                     cx = x + w
  95                 else:  # middle
  96                     cx = x + w / 2
  97
  98                 if self.options.yanchor == "t":
  99                     cy = y
 100                 elif self.options.yanchor == "b":
 101                     cy = y + h
 102                 else:  # middle
 103                     cy = y + h / 2
 104
 105                 #direction chosen
 106                 if self.options.direction == "tb" or self.options.angle == 270:
 107                     objlist.append([cy,id])
 108                 elif self.options.direction == "bt" or self.options.angle == 90:
 109                     objlist.append([-cy,id])
 110                 elif self.options.direction == "lr" or self.options.angle == 0 or self.options.angle == 360:
 111                     objlist.append([cx,id])
 112                 elif self.options.direction == "rl" or self.options.angle == 180:
 113                     objlist.append([-cx,id])
 114                 elif self.options.direction == "aa":
 115                     distance = math.hypot(cx,cy)*(math.cos(math.radians(-self.options.angle)-math.atan2(cy, cx)))
 116                     objlist.append([distance,id])
 117                 elif self.options.direction == "ro":
 118                     distance = math.hypot(midx - cx, midy - cy)
 119                     objlist.append([distance,id])
 120                 elif self.options.direction == "ri":
 121                     distance = -math.hypot(midx - cx, midy - cy)
 122                     objlist.append([distance,id])
 123
 124             objlist.sort()
 125             #move them to the top of the object stack in this order.
 126             for item in objlist:
 127                 svg.append( self.selected[item[1]])
 128
 129 e = Restack()
 130 e.affect()