share/extensions/restack.py

   1 #!/usr/bin/env python
   2 """
   3 Copyright (C) 2007-2011 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             parentnode = self.current_layer
  56             file = self.args[ -1 ]
  57
  58             #get all bounding boxes in file by calling inkscape again with the --query-all command line option
  59             #it returns a comma seperated list structured id,x,y,w,h
  60             if bsubprocess:
  61                 p = Popen('inkscape --query-all "%s"' % (file), shell=True, stdout=PIPE, stderr=PIPE)
  62                 err = p.stderr
  63                 f = p.communicate()[0]
  64                 try:
  65                     reader=csv.CSVParser().parse_string(f)    #there was a module cvs.py in earlier inkscape that behaved differently
  66                 except:
  67                     reader=csv.reader(f.split( os.linesep ))
  68                 err.close()
  69             else:
  70                 _,f,err = os.popen3('inkscape --query-all "%s"' % ( file ) )
  71                 reader=csv.reader( f )
  72                 err.close()
  73
  74             #build a dictionary with id as the key
  75             dimen = dict()
  76             for line in reader:
  77                 if len(line) > 0:
  78                     dimen[line[0]] = map( float, line[1:])
  79
  80             if not bsubprocess: #close file if opened using os.popen3
  81                 f.close
  82
  83             #find the center of all selected objects **Not the average!
  84             x,y,w,h = dimen[self.selected.keys()[0]]
  85             minx = x
  86             miny = y
  87             maxx = x + w
  88             maxy = y + h
  89
  90             for id, node in self.selected.iteritems():
  91                 # get the bounding box
  92                 x,y,w,h = dimen[id]
  93                 if x < minx:
  94                     minx = x
  95                 if (x + w) > maxx:
  96                     maxx = x + w
  97                 if y < miny:
  98                     miny = y
  99                 if (y + h) > maxy:
 100                     maxy = y + h
 101
 102             midx = (minx + maxx) / 2
 103             midy = (miny + maxy) / 2
 104
 105             #calculate distances for each selected object
 106             for id, node in self.selected.iteritems():
 107                 # get the bounding box
 108                 x,y,w,h = dimen[id]
 109
 110                 # calc the comparison coords
 111                 if self.options.xanchor == "l":
 112                     cx = x
 113                 elif self.options.xanchor == "r":
 114                     cx = x + w
 115                 else:  # middle
 116                     cx = x + w / 2
 117
 118                 if self.options.yanchor == "t":
 119                     cy = y
 120                 elif self.options.yanchor == "b":
 121                     cy = y + h
 122                 else:  # middle
 123                     cy = y + h / 2
 124
 125                 #direction chosen
 126                 if self.options.direction == "tb" or (self.options.direction == "aa" and self.options.angle == 270):
 127                     objlist.append([cy,id])
 128                 elif self.options.direction == "bt" or (self.options.direction == "aa" and self.options.angle == 90):
 129                     objlist.append([-cy,id])
 130                 elif self.options.direction == "lr" or (self.options.direction == "aa" and (self.options.angle == 0 or self.options.angle == 360)):
 131                     objlist.append([cx,id])
 132                 elif self.options.direction == "rl" or (self.options.direction == "aa" and self.options.angle == 180):
 133                     objlist.append([-cx,id])
 134                 elif self.options.direction == "aa":
 135                     distance = math.hypot(cx,cy)*(math.cos(math.radians(-self.options.angle)-math.atan2(cy, cx)))
 136                     objlist.append([distance,id])
 137                 elif self.options.direction == "ro":
 138                     distance = math.hypot(midx - cx, midy - cy)
 139                     objlist.append([distance,id])
 140                 elif self.options.direction == "ri":
 141                     distance = -math.hypot(midx - cx, midy - cy)
 142                     objlist.append([distance,id])
 143
 144             objlist.sort()
 145             #move them to the top of the object stack in this order.
 146             for item in objlist:
 147                 parentnode.append( self.selected[item[1]])
 148
 149 if __name__ == '__main__':
 150     e = Restack()
 151     e.affect()
 152
 153
 154 # vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 encoding=utf-8 textwidth=99