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#!/usr/bin/env python
"""
An Inkscape extension that creates a frame around a selected object.
Copyright (C) 2016 Richard White, rwhite8282@gmail.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
# These two lines are only needed if you don't put the script directly into
# the installation directory
import sys
sys.path.append('/usr/share/inkscape/extensions')
import inkex
import simplestyle
from simpletransform import *
from simplestyle import *
def get_picker_data(value):
""" Returns color data in style string format.
value -- The value returned from the color picker.
Returns an object with color and opacity properties.
"""
v = '%08X' % (value & 0xFFFFFFFF)
color = '#' + v[0:-2].rjust(6, '0')
opacity = '%1.2f' % (float(int(v[6:].rjust(2, '0'), 16))/255)
return type('', (object,), {'color':color, 'opacity':opacity})()
def size_box(box, delta):
""" Returns a box with an altered size.
delta -- The amount the box should grow.
Returns a box with an altered size.
"""
return ((box[0]-delta), (box[1]+delta), (box[2]-delta), (box[3]+delta))
# Frame maker Inkscape effect extension
class Frame(inkex.Effect):
""" An Inkscape extension that creates a frame around a selected object.
"""
def __init__(self):
inkex.Effect.__init__(self)
self.defs = None
# Parse the options.
self.OptionParser.add_option('--clip',
action='store', type='inkbool',
dest='clip', default=False)
self.OptionParser.add_option('--corner_radius',
action='store', type='int',
dest='corner_radius', default=0)
self.OptionParser.add_option('--fill_color',
action='store', type='int',
dest='fill_color', default='00000000')
self.OptionParser.add_option('--group',
action='store', type='inkbool',
dest='group', default=False)
self.OptionParser.add_option('--position',
action='store', type='string',
dest='position', default='outside')
self.OptionParser.add_option('--stroke_color',
action='store', type='int',
dest='stroke_color', default='00000000')
self.OptionParser.add_option('--tab',
action='store', type='string',
dest='tab', default='object')
self.OptionParser.add_option('--width',
action='store', type='float',
dest='width', default=2)
def add_clip(self, node, clip_path):
""" Adds a new clip path node to the defs and sets
the clip-path on the node.
node -- The node that will be clipped.
clip_path -- The clip path object.
"""
if self.defs is None:
defs_nodes = self.document.getroot().xpath('//svg:defs', namespaces=inkex.NSS)
if defs_nodes:
self.defs = defs_nodes[0]
else:
inkex.errormsg('Could not locate defs node for clip.')
return
clip = inkex.etree.SubElement(self.defs, inkex.addNS('clipPath','svg'))
clip.append(copy.deepcopy(clip_path))
clip_id = self.uniqueId('clipPath')
clip.set('id', clip_id)
node.set('clip-path', 'url(#%s)' % str(clip_id))
def add_frame(self, parent, name, box, style, radius=0):
""" Adds a new frame to the parent object.
parent -- The parent that the frame will be added to.
name -- The name of the new frame object.
box -- The boundary box of the node.
style -- The style used to draw the path.
radius -- The corner radius of the frame.
returns a new frame node.
"""
r = min([radius, (abs(box[1]-box[0])/2), (abs(box[3]-box[2])/2)])
if (radius > 0):
d = ' '.join(str(x) for x in
['M', box[0], (box[2]+r)
,'A', r, r, '0 0 1', (box[0]+r), box[2]
,'L', (box[1]-r), box[2]
,'A', r, r, '0 0 1', box[1], (box[2]+r)
,'L', box[1], (box[3]-r)
,'A', r, r, '0 0 1', (box[1]-r), box[3]
,'L', (box[0]+r), box[3]
,'A', r, r, '0 0 1', box[0], (box[3]-r), 'Z'])
else:
d = ' '.join(str(x) for x in
['M', box[0], box[2]
,'L', box[1], box[2]
,'L', box[1], box[3]
,'L', box[0], box[3], 'Z'])
attributes = {'style':style, inkex.addNS('label','inkscape'):name, 'd':d}
return inkex.etree.SubElement(parent, inkex.addNS('path','svg'), attributes )
def effect(self):
""" Performs the effect.
"""
# Get the style values.
corner_radius = self.options.corner_radius
stroke_data = get_picker_data(self.options.stroke_color)
fill_data = get_picker_data(self.options.fill_color)
# Determine common properties.
parent = self.current_layer
position = self.options.position
width = self.options.width
style = simplestyle.formatStyle({'stroke':stroke_data.color
, 'stroke-opacity':stroke_data.opacity
, 'stroke-width':str(width)
, 'fill':(fill_data.color if (fill_data.opacity > 0) else 'none')
, 'fill-opacity':fill_data.opacity})
for id, node in self.selected.iteritems():
box = computeBBox([node])
if 'outside' == position:
box = size_box(box, (width/2))
else:
box = size_box(box, -(width/2))
name = 'Frame'
frame = self.add_frame(parent, name, box, style, corner_radius)
if self.options.clip:
self.add_clip(node, frame)
if self.options.group:
group = inkex.etree.SubElement(node.getparent(),inkex.addNS('g','svg'))
group.append(node)
group.append(frame)
if __name__ == '__main__': #pragma: no cover
# Create effect instance and apply it.
effect = Frame()
effect.affect()
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