try a python script in runner
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# -*- 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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# pylint: disable=arguments-differ
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"""
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Provide text based element classes interface.
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Because text is not rendered at all, no information about a text's path
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size or actual location can be generated yet.
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"""
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from __future__ import annotations
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from tempfile import TemporaryDirectory
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from ..interfaces.IElement import BaseElementProtocol
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from ..paths import Path
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from ..transforms import Transform, BoundingBox
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from ..command import inkscape, write_svg
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from ._base import BaseElement, ShapeElement
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from ._polygons import PathElementBase
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class TextBBMixin: # pylint: disable=too-few-public-methods
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"""Mixin to query the bounding box from Inkscape
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.. versionadded:: 1.2"""
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def get_inkscape_bbox(self: BaseElementProtocol) -> BoundingBox:
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"""Query the bbbox of a single object. This calls the Inkscape command,
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so it is rather slow to use in a loop."""
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with TemporaryDirectory(prefix="inkscape-command") as tmpdir:
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svg_file = write_svg(self.root, tmpdir, "input.svg")
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out = inkscape(svg_file, "-X", "-Y", "-W", "-H", query_id=self.get_id())
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out = list(map(self.root.viewport_to_unit, out.splitlines()))
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if len(out) != 4:
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raise ValueError("Error: Bounding box computation failed")
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return BoundingBox.new_xywh(*out)
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class FlowRegion(ShapeElement):
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"""SVG Flow Region (SVG 2.0)"""
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tag_name = "flowRegion"
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def get_path(self):
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# This ignores flowRegionExcludes
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return sum([child.path for child in self], Path())
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class FlowRoot(ShapeElement, TextBBMixin):
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"""SVG Flow Root (SVG 2.0)"""
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tag_name = "flowRoot"
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@property
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def region(self):
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"""Return the first flowRegion in this flowRoot"""
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return self.findone("svg:flowRegion")
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def get_path(self):
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region = self.region
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return region.get_path() if region is not None else Path()
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class FlowPara(ShapeElement):
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"""SVG Flow Paragraph (SVG 2.0)"""
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tag_name = "flowPara"
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def get_path(self):
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# XXX: These empty paths mean the bbox for text elements will be nothing.
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return Path()
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class FlowDiv(ShapeElement):
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"""SVG Flow Div (SVG 2.0)"""
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tag_name = "flowDiv"
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def get_path(self):
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# XXX: These empty paths mean the bbox for text elements will be nothing.
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return Path()
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class FlowSpan(ShapeElement):
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"""SVG Flow Span (SVG 2.0)"""
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tag_name = "flowSpan"
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def get_path(self):
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# XXX: These empty paths mean the bbox for text elements will be nothing.
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return Path()
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class TextElement(ShapeElement, TextBBMixin):
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"""A Text element"""
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tag_name = "text"
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x = property(lambda self: self.to_dimensionless(self.get("x", 0)))
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y = property(lambda self: self.to_dimensionless(self.get("y", 0)))
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def get_path(self):
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return Path()
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def tspans(self):
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"""Returns all children that are tspan elements"""
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return self.findall("svg:tspan")
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def get_text(self, sep="\n"):
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"""Return the text content including tspans and their tail"""
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# Stack of node and depth
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stack = [(self, 0)]
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result = []
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def poptail():
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"""Pop the tail from the tail stack and add it if necessary to results"""
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tail = tail_stack.pop()
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if tail is not None:
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result.append(tail)
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# Stack of the tail of nodes
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tail_stack = []
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previous_depth = -1
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while stack:
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# Get current node and depth
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node, depth = stack.pop()
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# Pop the previous tail if the depth do not increase
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if previous_depth >= depth:
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poptail()
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# Pop as many times as the depth is reduced
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for _ in range(previous_depth - depth):
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poptail()
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# Add a node text to the result, if any if node is text or tspan
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if node.text and node.TAG in ["text", "tspan"]:
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result.append(node.text)
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# Add child elements
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stack.extend(
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map(
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lambda tspan: (tspan, depth + 1),
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node.iterchildren(reversed=True),
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)
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)
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# Add the tail from node to the stack
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tail_stack.append(node.tail)
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previous_depth = depth
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# Pop remaining tail elements
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# Tail of the main text element should not be included
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while len(tail_stack) > 1:
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poptail()
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return sep.join(result)
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def shape_box(self, transform=None):
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"""
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Returns a horrible bounding box that just contains the coord points
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of the text without width or height (which is impossible to calculate)
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"""
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effective_transform = Transform(transform) @ self.transform
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x, y = effective_transform.apply_to_point((self.x, self.y))
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bbox = BoundingBox(x, y)
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for tspan in self.tspans():
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bbox += tspan.bounding_box(effective_transform)
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return bbox
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class TextPath(ShapeElement, TextBBMixin):
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"""A textPath element"""
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tag_name = "textPath"
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def get_path(self):
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return Path()
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class Tspan(ShapeElement, TextBBMixin):
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"""A tspan text element"""
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tag_name = "tspan"
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x = property(lambda self: self.to_dimensionless(self.get("x", 0)))
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y = property(lambda self: self.to_dimensionless(self.get("y", 0)))
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@classmethod
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def superscript(cls, text):
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"""Adds a superscript tspan element"""
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return cls(text, style="font-size:65%;baseline-shift:super")
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def get_path(self):
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return Path()
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def shape_box(self, transform=None):
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"""
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Returns a horrible bounding box that just contains the coord points
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of the text without width or height (which is impossible to calculate)
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"""
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effective_transform = Transform(transform) @ self.transform
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x1, y1 = effective_transform.apply_to_point((self.x, self.y))
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fontsize = self.to_dimensionless(self.style.get("font-size", "12px"))
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x2 = self.x + 0 # XXX This is impossible to calculate!
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y2 = self.y + float(fontsize)
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x2, y2 = effective_transform.apply_to_point((x2, y2))
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return BoundingBox((x1, x2), (y1, y2))
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class SVGfont(BaseElement):
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"""An svg font element"""
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tag_name = "font"
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class FontFace(BaseElement):
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"""An svg font font-face element"""
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tag_name = "font-face"
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class Glyph(PathElementBase):
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"""An svg font glyph element"""
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tag_name = "glyph"
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class MissingGlyph(BaseElement):
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"""An svg font missing-glyph element"""
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tag_name = "missing-glyph"
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