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import inkex
from random import random
from .commands import CommandsExtension
from ..commands import OBJECT_COMMANDS, get_command_description
from ..i18n import _
from ..svg.tags import SVG_PATH_TAG, CONNECTION_START, CONNECTION_END, CONNECTOR_TYPE, INKSCAPE_LABEL, SVG_GROUP_TAG, SVG_USE_TAG, XLINK_HREF
from ..svg import get_correction_transform
class ObjectCommands(CommandsExtension):
COMMANDS = OBJECT_COMMANDS
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;stroke-opacity:0.5;fill:none;",
CONNECTION_START: "#%s" % symbol.get('id'),
CONNECTION_END: "#%s" % element.node.get('id'),
CONNECTOR_TYPE: "polyline",
# l10n: the name of the line that connects a command to the object it applies to
INKSCAPE_LABEL: _("connector")
}
)
symbol.getparent().insert(0, path)
def get_command_pos(self, element, index, total):
# Put command symbols 30 pixels out from the shape, spaced evenly around it.
# get a line running 30 pixels out from the shape
outline = element.shape.buffer(30).exterior
# pick this item's spot arond the outline and perturb it a bit to avoid
# stacking up commands if they run the extension multiple times
position = index / float(total)
position += random() * 0.1
return outline.interpolate(position, normalized=True)
def remove_legacy_param(self, element, command):
if command == "trim" or command == "stop":
# If they had the old "TRIM after" or "STOP after" attributes set,
# automatically delete them. THe new commands will do the same
# thing.
#
# If we didn't delete these here, then things would get confusing.
# If the user were to delete a "trim" symbol added by this extension
# but the "embroider_trim_after" attribute is still set, then the
# trim would keep happening.
attribute = "embroider_%s_after" % command
if attribute in element.node.attrib:
del element.node.attrib[attribute]
def add_commands(self, element, commands):
for i, command in enumerate(commands):
self.remove_legacy_param(element, command)
pos = self.get_command_pos(element, i, len(commands))
group = inkex.etree.SubElement(element.node.getparent(), SVG_GROUP_TAG,
{
"id": self.uniqueId("group"),
INKSCAPE_LABEL: _("Ink/Stitch Command") + ": %s" % get_command_description(command),
"transform": get_correction_transform(element.node)
}
)
symbol = inkex.etree.SubElement(group, SVG_USE_TAG,
{
"id": self.uniqueId("use"),
XLINK_HREF: "#inkstitch_%s" % command,
"height": "100%",
"width": "100%",
"x": str(pos.x),
"y": str(pos.y),
# l10n: the name of a command symbol (example: scissors icon for trim command)
INKSCAPE_LABEL: _("command marker"),
}
)
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)
# Each object (node) in the SVG may correspond to multiple Elements of different
# types (e.g. stroke + fill). We only want to process each one once.
seen_nodes = set()
for element in self.elements:
if element.node not in seen_nodes:
self.add_commands(element, commands)
seen_nodes.add(element.node)
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