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 try:
  27     from subprocess import Popen, PIPE
  28     bsubprocess = True
  29 except:
  30     bsubprocess = False
  31
  32 class Restack(inkex.Effect):
  33     def __init__(self):
  34         inkex.Effect.__init__(self)
  35         self.OptionParser.add_option("-d", "--direction",
  36                         action="store", type="string",
  37                         dest="direction", default="tb",
  38                         help="direction to restack")
  39         self.OptionParser.add_option("-a", "--angle",
  40                         action="store", type="float",
  41                         dest="angle", default=0.0,
  42                         help="arbitrary angle")
  43         self.OptionParser.add_option("-x", "--xanchor",
  44                         action="store", type="string",
  45                         dest="xanchor", default="m",
  46                         help="horizontal point to compare")
  47         self.OptionParser.add_option("-y", "--yanchor",
  48                         action="store", type="string",
  49                         dest="yanchor", default="m",
  50                         help="vertical point to compare")
  51     def effect(self):
  52         if len( self.selected ) > 0:
  53             objlist = []
  54             svg = self.document.getroot()
  55
  56             file = self.args[ -1 ]
  57             #get all bounding boxes in file by calling inkscape again with the --querry-all command line option
  58             #it returns a comma seperated list structured id,x,y,w,h
  59             if bsubprocess:
  60                 p = Popen('inkscape --query-all "%s"' % (file), shell=True, stdout=PIPE, stderr=PIPE)
  61                 rc = p.wait()
  62                 f = p.stdout
  63                 err = p.stderr
  64             else:
  65                 _,f,err = os.popen3( "inkscape --query-all %s" % ( file ) )
  66             reader=csv.reader( f.readlines() )
  67             f.close()
  68             err.close()
  69
  70             #build a dictionary with id as the key
  71             dimen = dict()
  72             for line in reader:
  73                 dimen[line[0]] = map( float, line[1:])
  74
  75             #find the center of all selected objects **Not the average!
  76             x,y,w,h = dimen[self.selected.keys()[0]]
  77             minx = x
  78             miny = y
  79             maxx = x + w
  80             maxy = y + h
  81
  82             for id, node in self.selected.iteritems():
  83                 # get the bounding box
  84                 x,y,w,h = dimen[id]
  85                 if x < minx:
  86                     minx = x
  87                 if (x + w) > maxx:
  88                     maxx = x + w
  89                 if y < miny:
  90                     miny = y
  91                 if (y + h) > maxy:
  92                     maxy = y + h
  93
  94             midx = (minx + maxx) / 2
  95             midy = (miny + maxy) / 2
  96
  97             #calculate distances for each selected object
  98             for id, node in self.selected.iteritems():
  99                 # get the bounding box
 100                 x,y,w,h = dimen[id]
 101
 102                 # calc the comparison coords
 103                 if self.options.xanchor == "l":
 104                     cx = x
 105                 elif self.options.xanchor == "r":
 106                     cx = x + w
 107                 else:  # middle
 108                     cx = x + w / 2
 109
 110                 if self.options.yanchor == "t":
 111                     cy = y
 112                 elif self.options.yanchor == "b":
 113                     cy = y + h
 114                 else:  # middle
 115                     cy = y + h / 2
 116
 117                 #direction chosen
 118                 if self.options.direction == "tb" or self.options.angle == 270:
 119                     objlist.append([cy,id])
 120                 elif self.options.direction == "bt" or self.options.angle == 90:
 121                     objlist.append([-cy,id])
 122                 elif self.options.direction == "lr" or self.options.angle == 0 or self.options.angle == 360:
 123                     objlist.append([cx,id])
 124                 elif self.options.direction == "rl" or self.options.angle == 180:
 125                     objlist.append([-cx,id])
 126                 elif self.options.direction == "aa":
 127                     distance = math.hypot(cx,cy)*(math.cos(math.radians(-self.options.angle)-math.atan2(cy, cx)))
 128                     objlist.append([distance,id])
 129                 elif self.options.direction == "ro":
 130                     distance = math.hypot(midx - cx, midy - cy)
 131                     objlist.append([distance,id])
 132                 elif self.options.direction == "ri":
 133                     distance = -math.hypot(midx - cx, midy - cy)
 134                     objlist.append([distance,id])
 135
 136             objlist.sort()
 137             #move them to the top of the object stack in this order.
 138             for item in objlist:
 139                 svg.append( self.selected[item[1]])
 140
 141 if __name__ == '__main__':
 142     e = Restack()
 143     e.affect()
 144
 145
 146 # vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99