90 lines
2.9 KiB
Python
90 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (c) 2020 Martin Owens <doctormo@gmail.com>
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# Thomas Holder <thomas.holder@schrodinger.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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"""
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Interface for the Use and Symbol elements
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"""
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from ..transforms import Transform
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from ._groups import Group, GroupBase
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from ._base import ShapeElement
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class Symbol(GroupBase):
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"""SVG symbol element"""
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tag_name = "symbol"
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class Use(ShapeElement):
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"""A 'use' element that links to another in the document"""
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tag_name = "use"
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@classmethod
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def new(cls, elem, x, y, **attrs): # pylint: disable=arguments-differ
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ret = super().new(x=x, y=y, **attrs)
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ret.href = elem
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return ret
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def get_path(self):
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"""Returns the path of the cloned href plus any transformation
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.. versionchanged:: 1.3
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include transform of the referenced element
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"""
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path = self.href.path
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path = path.transform(self.href.transform)
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return path
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def effective_style(self):
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"""Href's style plus this object's own styles"""
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style = self.href.effective_style()
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style.update(self.style)
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return style
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def unlink(self):
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"""Unlink this clone, replacing it with a copy of the original"""
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copy = self.href.copy()
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if isinstance(copy, Symbol):
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group = Group(**copy.attrib)
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group.extend(copy)
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copy = group
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copy.transform = self.transform @ copy.transform
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copy.transform.add_translate(
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self.to_dimensionless(self.get("x", 0)),
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self.to_dimensionless(self.get("y", 0)),
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)
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copy.style = self.style + copy.style
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# Preserve the id of the clone to not break links that link the <use>
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# As we replace exactly one element by exactly one, this should be safe.
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old_id = self.get_id()
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self.replace_with(copy)
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copy.set_random_ids()
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copy.set_id(old_id)
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return copy
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def shape_box(self, transform=None):
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"""BoundingBox of the unclipped shape
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.. versionadded:: 1.1"""
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effective_transform = Transform(transform) @ self.transform
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return self.href.bounding_box(effective_transform)
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