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Diffstat (limited to 'io_import_dxf/dxfgrabber/styles.py')
| -rwxr-xr-x | io_import_dxf/dxfgrabber/styles.py | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/io_import_dxf/dxfgrabber/styles.py b/io_import_dxf/dxfgrabber/styles.py new file mode 100755 index 00000000..8553bc4f --- /dev/null +++ b/io_import_dxf/dxfgrabber/styles.py @@ -0,0 +1,100 @@ +# Purpose: handle text styles +# Created: 06.01.2014 +# Copyright (C) 2014, Manfred Moitzi +# License: MIT License +from __future__ import unicode_literals +__author__ = "mozman <mozman@gmx.at>" + +from .dxfentity import DXFEntity +from .layers import Table +from .dxfattr import DXFAttr, DXFAttributes, DefSubclass +from .tags import ClassifiedTags + + +class Style(object): + def __init__(self, wrapper): + self.name = wrapper.get_dxf_attrib('name') + self.height = wrapper.get_dxf_attrib('height') + self.width = wrapper.get_dxf_attrib('width') + self.oblique = wrapper.get_dxf_attrib('oblique') + # backward & mirror_y was first and stays for compatibility + self.backward = bool(wrapper.get_dxf_attrib('generation_flags') & 2) + self.mirror_y = bool(wrapper.get_dxf_attrib('generation_flags') & 4) + self.is_backwards = self.backward + self.is_upside_down = self.mirror_y + self.font = wrapper.get_dxf_attrib('font') + self.bigfont = wrapper.get_dxf_attrib('bigfont', "") + + +class StyleTable(Table): + name = 'styles' + + @staticmethod + def from_tags(tags, drawing): + dxfversion = drawing.dxfversion + styles = StyleTable() + for entrytags in styles._classified_tags(tags): + dxfstyle = styles.wrap(entrytags, dxfversion) + styles._table_entries[dxfstyle.get_dxf_attrib('name')] = Style(dxfstyle) + return styles + + @staticmethod + def wrap(tags, dxfversion): + return DXF12Style(tags) if dxfversion == "AC1009" else DXF13Style(tags) + + +class DXF12Style(DXFEntity): + DXFATTRIBS = DXFAttributes(DefSubclass(None, { + 'handle': DXFAttr(5), + 'name': DXFAttr(2), + 'flags': DXFAttr(70), + 'height': DXFAttr(40), # fixed height, 0 if not fixed + 'width': DXFAttr(41), # width factor + 'oblique': DXFAttr(50), # oblique angle in degree, 0 = vertical + 'generation_flags': DXFAttr(71), # 2 = backward, 4 = mirrored in Y + 'last_height': DXFAttr(42), # last height used + 'font': DXFAttr(3), # primary font file name + 'bigfont': DXFAttr(4), # big font name, blank if none + })) + +none_subclass = DefSubclass(None, {'handle': DXFAttr(5)}) +symbol_subclass = DefSubclass('AcDbSymbolTableRecord', {}) +style_subclass = DefSubclass('AcDbTextStyleTableRecord', { + 'name': DXFAttr(2), + 'flags': DXFAttr(70), + 'height': DXFAttr(40), # fixed height, 0 if not fixed + 'width': DXFAttr(41), # width factor + 'oblique': DXFAttr(50), # oblique angle in degree, 0 = vertical + 'generation_flags': DXFAttr(71), # 2 = backward, 4 = mirrored in Y + 'last_height': DXFAttr(42), # last height used + 'font': DXFAttr(3), # primary font file name + 'bigfont': DXFAttr(4), # big font name, blank if none +}) + + +class DXF13Style(DXF12Style): + DXFATTRIBS = DXFAttributes(none_subclass, symbol_subclass, style_subclass) + +DEFAULT_STYLE = """ 0 +STYLE + 2 +STANDARD + 70 +0 + 40 +0.0 + 41 +1.0 + 50 +0.0 + 71 +0 + 42 +1.0 + 3 +Arial + 4 + +""" + +default_text_style = Style(DXF12Style(ClassifiedTags.from_text(DEFAULT_STYLE)))
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