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import os
import sys
import inkex
import simpletransform
import cubicsuperpath
from copy import deepcopy
from shapely import geometry as shgeo
from .base import InkstitchExtension
from ..i18n import _
from ..elements import SatinColumn
from ..utils import get_bundled_dir, cache
from ..svg.tags import SVG_DEFS_TAG, SVG_GROUP_TAG, SVG_USE_TAG, SVG_PATH_TAG, INKSCAPE_GROUPMODE, XLINK_HREF, CONNECTION_START, CONNECTION_END, CONNECTOR_TYPE
from ..svg import get_node_transform
class Commands(InkstitchExtension):
COMMANDS = ["fill_start", "fill_end", "stop", "trim"]
def __init__(self, *args, **kwargs):
InkstitchExtension.__init__(self, *args, **kwargs)
for command in self.COMMANDS:
self.OptionParser.add_option("--%s" % command, type="inkbool")
@property
def symbols_path(self):
return os.path.join(get_bundled_dir("symbols"), "inkstitch.svg")
@property
@cache
def symbols_svg(self):
with open(self.symbols_path) as symbols_file:
return inkex.etree.parse(symbols_file)
@property
@cache
def symbol_defs(self):
return self.symbols_svg.find(SVG_DEFS_TAG)
@property
@cache
def defs(self):
return self.document.find(SVG_DEFS_TAG)
def ensure_symbol(self, command):
path = "./*[@id='inkstitch_%s']" % command
if self.defs.find(path) is None:
self.defs.append(deepcopy(self.symbol_defs.find(path)))
def get_correction_transform(self, node):
# if we want to place our new nodes in the same group as this node,
# then we'll need to factor in the effects of any transforms set on
# the parents of this node.
# we can ignore the transform on the node itself since it won't apply
# to the objects we add
transform = get_node_transform(node.getparent())
# now invert it, so that we can position our objects in absolute
# coordinates
transform = simpletransform.invertTransform(transform)
return simpletransform.formatTransform(transform)
def add_connector(self, symbol, element):
# I'd like it if I could position the connector endpoint nicely but inkscape just
# moves it to the element's center immediately after the extension runs.
start_pos = (symbol.get('x'), symbol.get('y'))
end_pos = element.shape.centroid
path = inkex.etree.Element(SVG_PATH_TAG,
{
"id": self.uniqueId("connector"),
"d": "M %s,%s %s,%s" % (start_pos[0], start_pos[1], end_pos.x, end_pos.y),
"style": "stroke:#000000;stroke-width:1px;",
"transform": self.get_correction_transform(symbol),
CONNECTION_START: "#%s" % symbol.get('id'),
CONNECTION_END: "#%s" % element.node.get('id'),
CONNECTOR_TYPE: "polyline",
}
)
symbol.getparent().insert(symbol.getparent().index(symbol), path)
def get_command_pos(self, element, index, total):
# Put command symbols 30 pixels out from the shape, spaced evenly around it.
outline = element.shape.buffer(30).exterior
return outline.interpolate(index / float(total), normalized=True)
def add_command(self, element, commands):
for i, command in enumerate(commands):
pos = self.get_command_pos(element, i, len(commands))
symbol = inkex.etree.SubElement(element.node.getparent(), SVG_USE_TAG,
{
"id": self.uniqueId("use"),
XLINK_HREF: "#inkstitch_%s" % command,
"height": "100%",
"width": "100%",
"x": str(pos.x),
"y": str(pos.y),
"transform": self.get_correction_transform(element.node)
}
)
self.add_connector(symbol, element)
def effect(self):
if not self.get_elements():
return
if not self.selected:
inkex.errormsg(_("Please select one or more objects to which to attach commands."))
return
self.svg = self.document.getroot()
commands = [command for command in self.COMMANDS if getattr(self.options, command)]
if not commands:
inkex.errormsg(_("Please choose one or more commands to attach."))
return
for command in commands:
self.ensure_symbol(command)
for element in self.elements:
self.add_command(element, commands)
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