517 lines
24 KiB
Python
517 lines
24 KiB
Python
import FreeCAD as App
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import FreeCADGui
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from lxml import etree
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import XternalAppsList
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from ToolXML import *
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from collections import namedtuple
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import re
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from copy import deepcopy
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from collections import defaultdict
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import pprint
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import Part
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parser = etree.XMLParser(resolve_entities=False)
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FreeCADType = namedtuple('FreeCADType', ['type', 'defaultForType', 'maybeEnumValues', 'maybeMIMEType'])
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XFormsInput = namedtuple('XFormsInput', ['modelElementPath', 'label', 'simpleName', 'maybeEnum', 'groupName', 'relevance']) #'type', 'input', 'InputValueToModelValue', 'ModelValueToInputValue'
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XFormsEnum = namedtuple('XFormsEnum', ['labels', 'values'])
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InterpretedXML = namedtuple('InterpretedXML', ['xml', 'types', 'inputs']) # Parsed XML, dictionary(modelElementPath) -> type, dictionary(formElementPath) -> XFormsInput
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def CreateCommand(appName, toolName):
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App.ActiveDocument.openTransaction('Create parametric %s from %s'%(toolName, appName))
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FreeCADGui.addModule("XternalAppsParametricTool")
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FreeCADGui.doCommand("XternalAppsParametricTool.create(%s, %s)"%(repr(appName), repr(toolName)))
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App.ActiveDocument.commitTransaction()
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def create(appName, toolName):
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sel = FreeCADGui.Selection.getSelection()
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name = appName + toolName
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obj = App.ActiveDocument.addObject("App::DocumentObjectGroupPython", name)
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XternalAppsParametricTool(obj, appName, toolName, sel)
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return obj
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# TODO: read-only/immutable
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typeToFreeCADTypeDict = {
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# TODO:do an XML namespace lookup instead of comparing a constant.
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'xsd:decimal': FreeCADType(type='App::PropertyFloat', defaultForType=0.0, maybeEnumValues=None, maybeMIMEType=None),
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'xsd:string': FreeCADType(type='App::PropertyString', defaultForType='', maybeEnumValues=None, maybeMIMEType=None),
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}
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def getShortPath(root, elem, root_needs_dot = True):
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if isinstance(root, etree._ElementTree):
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root = root.getroot()
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if root == elem:
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return '.'
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else:
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parent = elem.getparent()
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parentChildren = list(parent) # convert to list of children
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index = parentChildren.index(elem)
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return getShortPath(root, parent) + '/*[' + str(index) + ']'
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def typeToFreeCADType(type, namespacesAtTypeElement, maybeSchema):
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def escape(str): return
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if type.startswith('mime:'):
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return MIMETypeToFreeCADType(type[5:])
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elif type in typeToFreeCADTypeDict:
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return typeToFreeCADTypeDict[type]
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elif maybeSchema is not None and ':' in type:
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# TODO: should the type be looked up using the namespaces on the 'type="xxx"' side or on the 'schema' side?
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nameNs, name = type.split(':', 1)
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if '"' in name or '&' in name:
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raise ValueError("invaid character in type name")
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if nameNs not in namespacesAtTypeElement.keys() or namespacesAtTypeElement[nameNs] != maybeSchema.attrib['targetNamespace']:
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raise ValueError('namespace of type reference must match the targetNamespace of the schema')
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schemaTypes = maybeSchema.findall('.//*[@name="'+name+'"]', namespaces=namespacesAtTypeElement)
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if len(schemaTypes) != 1:
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raise ValueError('Could not find definition for XForms type.')
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else:
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schemaType = schemaTypes[0];
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return schemaTypeToFreeCADType(schemaType)
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else:
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raise ValueError('Unsupported XForms type')
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def schemaTypeToFreeCADType(schemaType):
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if schemaType.tag == "{http://www.w3.org/2001/XMLSchema}simpleType":
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restriction = schemaType.find('./xsd:restriction', ns)
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base = restriction.attrib['base']
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if ':' not in base:
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raise ValueError('only restrictions of xsd:string (a.k.a. enums) are supported')
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baseNs, baseName = base.split(':', 1)
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if baseName != 'string' or baseNs not in restriction.nsmap.keys() or restriction.nsmap[baseNs] != ns['xsd']:
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raise ValueError('only restrictions of xsd:string (a.k.a. enums) are supported')
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enumCases = restriction.findall('./xsd:enumeration', ns)
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enumValues = [enumCase.attrib['value'] for enumCase in enumCases]
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return FreeCADType(type = 'App::PropertyEnumeration', defaultForType = (enumValues[0] if len(enumValues) > 0 else None), maybeEnumValues = enumValues, maybeMIMEType=None)
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elif schemaType.tag == "{http://www.w3.org/2001/XMLSchema}complexType":
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return ValueError("Complex XML chema types are not supported")
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def MIMETypeToFreeCADType(MIMEType):
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if MIMEType == 'image/svg+xml':
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return FreeCADType(type='App::PropertyLink', defaultForType=None, maybeEnumValues=None, maybeMIMEType = MIMEType)
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else:
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raise ValueError('Unsupported MIME type')
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def toSimpleName(name):
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return re.sub(r'( |[^-a-zA-Z0-9])+', ' ', name).title().replace(' ', '')
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def toUniqueSimpleName(name, mutableNextUnique):
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m = re.match(r'^((.*[^0-9])?)([0-9]*)$', name)
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base = m.group(1)
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counter = m.group(3)
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if counter == '' and mutableNextUnique[base] == 0:
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mutableNextUnique[name] = 1
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elif counter == '':
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counter = str(mutableNextUnique[name])
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mutableNextUnique[name] = mutableNextUnique[name] + 1
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elif int(counter) > mutableNextUnique[name]:
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mutableNextUnique[name] = str(int(counter)+1)
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else:
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counter = str(mutableNextUnique[name])
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mutableNextUnique[name] = mutableNextUnique[name] + 1
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return base + counter
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def lookup(dict, part, value):
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kvs = [(k, v) for k, v in dict.items() if part(v) == value]
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if len(kvs) == 1:
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return kvs[0]
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return (None, None)
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def exportSVG(obj, svgfile):
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import importSVG
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p=App.ParamGet("User parameter:BaseApp/Preferences/Mod/Draft")
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old_svg_export_style = p.GetInt('svg_export_style')
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try:
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p.SetInt('svg_export_style', 1)
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importSVG.export([obj], svgfile)
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finally:
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p.SetInt('svg_export_style', old_svg_export_style)
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# TODO: modify the SVG to set a fake Inkscape version, to avoid the pop-up dialog.
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class XternalAppsParametricTool():
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def __init__(self, obj, appName, toolName, sel=[]):
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self.Type = "XternalAppsParametricTool"
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self.AppName = appName
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self.ToolName = toolName
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self.MonitorChanges = False;
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obj.Proxy = self
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self.types = self.xmlTypesToPython(self.Tool.XForms)
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self.defaults = self.xmlDefaultsToPython(self.Tool.XForms, self.types)
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self.form = self.xmlFormToPython(self.Tool.XForms, self.types)
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self.ModelInstance = self.defaults
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self.createProperties(obj, self.types, self.ModelInstance, self.form)
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self.oldExpressionEngine = obj.ExpressionEngine
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self.MonitorChanges = True
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#pprint.pprint(self.types)
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#pprint.pprint(self.form)
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# Special treatment for the "primary" form field
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primary = [input for input in self.form.values() if input.relevance == 'primary']
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if len(primary) == 1:
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primary = primary[0]
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type = self.types[primary.modelElementPath].type
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# Display the contents of the primary form element as children in the tree view
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if type in ['App::PropertyLink', 'App::PropertyLinkList']:
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self.form['FreeCADGroup'] = XFormsInput(modelElementPath=primary.modelElementPath, label='Group', simpleName='Group', maybeEnum=primary.maybeEnum, groupName='Base', relevance='primary')
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if type == 'App::PropertyLink' and len(sel) >= 1:
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setattr(obj, primary.simpleName, sel[0])
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elif type == 'App::PropertyLinkList':
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setattr(obj, primary.simpleName, sel)
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return
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def __getstate__(self):
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copied = self.__dict__.copy()
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copied['ModelInstance'] = list(copied['ModelInstance'].items())
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del copied['types']
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del copied['defaults']
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del copied['form']
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return copied
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def __setstate__(self, state):
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if state:
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state['ModelInstance'] = dict(state['ModelInstance'])
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self.__dict__ = state
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self.types = self.xmlTypesToPython(self.Tool.XForms)
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self.defaults = self.xmlDefaultsToPython(self.Tool.XForms, self.types)
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self.form = self.xmlFormToPython(self.Tool.XForms, self.types)
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def onChanged(self, obj, prop):
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import sys
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#print ('onChanged' + str(prop), file=sys.stderr)
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restoreMonitorChanges = self.MonitorChanges
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if self.MonitorChanges:
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try:
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#print('MonitorChanges = False')
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self.MonitorChanges = False
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# clear expressions attached to the same part of the model
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if (prop == 'ExpressionEngine'):
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# compare with oldExpressionEngine
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added = []
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removed = []
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for (k, _) in obj.ExpressionEngine:
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if k not in self.oldExpressionEngine:
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added = added + [k]
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#for k in self.oldExpressionEngine:
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# if k not in self.oldExpressionEngine:
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# removed = removed + [k]
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# Clear expressions for properties linked to the one that was added.
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for a in added:
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_, input = lookup(self.form, lambda input: input.simpleName, a)
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if input:
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for other in self.form.values():
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if other.modelElementPath == input.modelElementPath and other.simpleName != input.simpleName:
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# clear other.simpleName
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obj.setExpression(other.simpleName, None)
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self.oldExpressionEngine = set([k for k, v in obj.ExpressionEngine])
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_, input = lookup(self.form, lambda input: input.simpleName, prop)
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if input:
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newModelValue = getattr(obj, prop)
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if input.maybeEnum:
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newModelValue = input.maybeEnum[newModelValue]
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# The Group property always contains a list, but we may use it to represent a link to a single element.
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if prop == 'Group' and self.types[input.modelElementPath].type == 'App::PropertyLink':
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if len(newModelValue) > 0:
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newModelValue = newModelValue[0]
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else:
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newModelValue = None
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self.ModelInstance[input.modelElementPath] = newModelValue
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for other in self.form.values():
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if other.modelElementPath == input.modelElementPath and other.simpleName != input.simpleName:
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newFormValue = newModelValue
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#print('newModelValue', newModelValue)
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if other.maybeEnum:
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newFormValue = [f for f, m in other.maybeEnum.items() if m == newModelValue][0]
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#print(prop, newFormValue, other.simpleName, dict(obj.ExpressionEngine).get(prop), dict(obj.ExpressionEngine).get(other.simpleName))
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#obj.setExpression(other.simpleName, dict(obj.ExpressionEngine).get(prop))
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#print(obj, other.simpleName, newFormValue)
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setattr(obj, other.simpleName, newFormValue)
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finally:
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#print('MonitorChanges = ' + str(restoreMonitorChanges))
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self.MonitorChanges = restoreMonitorChanges
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def interpretFormElement(self, xmlXFormsElement, xml, instanceDocument, types):
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# TODO: is it safe to pass input unprotected here?
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modelElement = instanceDocument.find(xmlXFormsElement.attrib['ref'],
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namespaces=xmlXFormsElement.nsmap)
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if modelElement is None:
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raise Exception('Could not find ' + xmlXFormsElement.attrib['ref'] \
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+ ' in instance document with namespaces=' + repr(xmlXFormsElement.nsmap))
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modelElementPath = instanceDocument.getelementpath(modelElement)
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type = types.get(modelElementPath)
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if type is None:
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raise Exception('Could not find type for ' + modelElementPath)
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path = xml.getelementpath(xmlXFormsElement)
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path = getShortPath(xml, xmlXFormsElement) # TODO !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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relevance = xmlXFormsElement.xpath('./@XternalApps:relevance', namespaces=ns)
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if len(relevance):
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relevance = relevance[0]
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else:
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relevance = None
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return (path, xmlXFormsElement, modelElementPath, type, relevance)
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def xmlFormToPython(self, form_xml, types):
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"""Parse the …-form.xml document, and return
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a dictionary form[form_path] = ("model_path", "label", enum_labels?)"""
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xml = etree.parse(form_xml, parser=parser) # self.Tool.XForms
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model_root = xml.find('./xforms:model', ns)
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instanceDocument = etree.ElementTree(model_root.find('./xforms:instance/*', ns))
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inputs = {}
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nextUniqueSimpleName = defaultdict(lambda: 0)
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# register all inputs to inputs[pathToElement]
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for group in xml.findall('./xforms:group', ns):
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for input in group.findall('./xforms:input', ns):
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path, xmlXFormsElement, modelElementPath, _type, relevance = self.interpretFormElement(input, xml, instanceDocument, types)
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label = input.attrib['label']
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simpleName = toUniqueSimpleName(toSimpleName(label), nextUniqueSimpleName)
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groupName = "/".join(input.xpath('ancestor-or-self::xforms:group/xforms:label/text()', namespaces=ns)) or None
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inputs[path] = XFormsInput(modelElementPath=modelElementPath, label=label, simpleName=simpleName, maybeEnum=None, groupName=groupName, relevance=relevance) # type=type,
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for upload in group.findall("./xforms:upload", ns):
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path, xmlXFormsElement, modelElementPath, _type, relevance = self.interpretFormElement(upload, xml, instanceDocument, types)
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label = upload.xpath('./xforms:label/text()', namespaces=ns)
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if len(label) != 1:
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raise ValueError("An xforms:upload element should contain exactly one xforms:label element")
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label = label[0]
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if upload.xpath('./xforms:filename/@ref', namespaces=ns) != ['@filename']:
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raise ValueError("The ref attribute of an xforms:filename should always be the string '@filename' (this is a limitation of the XternalApps format).")
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simpleName = toUniqueSimpleName(toSimpleName(label), nextUniqueSimpleName)
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groupName = "/".join(upload.xpath('ancestor-or-self::xforms:group/xforms:label/text()', namespaces=ns)) or None
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inputs[path] = XFormsInput(modelElementPath=modelElementPath, label=label, simpleName=simpleName, maybeEnum=None, groupName=groupName, relevance=relevance) # type=type,
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for select1 in group.findall('./xforms:select1', ns):
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path, xmlXFormsElement, modelElementPath, _type, relevance = self.interpretFormElement(select1, xml, instanceDocument, types)
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label = select1.attrib['label']
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simpleName = toUniqueSimpleName(toSimpleName(label), nextUniqueSimpleName)
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groupName = "/".join(select1.xpath('ancestor-or-self::xforms:group/xforms:label/text()', namespaces=ns)) or None
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# Gather the allowed elements for the enum
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enum = {}
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for item in select1.findall('./xforms:item', ns):
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enum[item.attrib['label']] = item.attrib['value']
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# input=xmlXFormsElement,
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inputs[path] = XFormsInput(modelElementPath=modelElementPath, label=label, simpleName=simpleName, maybeEnum=enum, groupName=groupName, relevance=relevance) # type=type,
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return inputs
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def xmlTypesToPython(self, model_xml):
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"""Parse the …-model.xml document, and return
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a dictionary model[model_path] = ("FreeCAD type", FreeCADValue)."""
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xml = etree.parse(model_xml, parser=parser) # self.Tool.XForms
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model_root = xml.find('./xforms:model', ns)
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instanceDocument = etree.ElementTree(model_root.find('./xforms:instance/*', ns))
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maybeSchema = model_root.findall('./xsd:schema', ns)
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maybeSchema = None if len(maybeSchema) != 1 else maybeSchema[0];
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types = {}
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for bind in model_root.findall('xforms:bind', ns):
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for bound in instanceDocument.findall(bind.attrib['ref'], namespaces=bind.nsmap):
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path = instanceDocument.getelementpath(bound)
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# TODO: if has attrib type then …
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type = bind.attrib['type']
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type = typeToFreeCADType(type, bind.nsmap, maybeSchema)
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# TODO: I guess XForms implicitly allows intersection types by using several bind statements?
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types[path] = type
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# TODO: "required" field
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return types
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def xmlDefaultsToPython(self, model_xml, types):
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xml = etree.parse(model_xml, parser=parser) # self.Tool.XForms
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model_root = xml.find('./xforms:model', ns)
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instanceDocument = etree.ElementTree(model_root.find('./xforms:instance/*', ns))
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defaults = {}
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for modelElement in instanceDocument.findall('//*', ns):
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path = instanceDocument.getelementpath(modelElement)
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default = modelElement.text
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if default is None:
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default = types[path].defaultForType
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defaults[path] = default
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return defaults
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def createProperties(self, obj, types, defaults, form):
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for key, (modelElementPath, label, simpleName, maybeEnum, groupName, relevance) in form.items():
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obj.addProperty(types[modelElementPath].type,
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simpleName,
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groupName,
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label + '\nA value of type ' + types[modelElementPath].type)
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default = defaults[modelElementPath]
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if maybeEnum is not None:
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setattr(obj, simpleName, list(maybeEnum.keys()))
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# TODO: use a bidirectional dict
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default = [k for k, v in maybeEnum.items() if v == default][0]
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setattr(obj, simpleName, default)
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@property
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def Tool(self):
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return XternalAppsList.apps[self.AppName].Tools[self.ToolName]
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def xmlCommandToPython(self, document):
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"""Parse the .xml document, and return
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a pair of dictionaries accepts[model_path] = style and returns[model_path] = style."""
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xml = etree.parse(self.Tool.XForms, parser=parser)
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model_root = xml.find('./xforms:model', ns)
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instanceDocument = etree.ElementTree(model_root.find('./xforms:instance/*', ns))
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command = xml.find('./XternalApps:command', ns)
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method = command.attrib['method']
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commandName = command.attrib['name']
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accepts = command.find('./XternalApps:accepts', ns)
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returns = command.find('./XternalApps:returns', ns)
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maybeDefault = accepts.findall('./XternalApps:default', ns)
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if len(maybeDefault) == 1:
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default_style = maybeDefault[0].attrib['style']
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elif len(maybeDefault) > 1:
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raise ValueError('The accepts tag should contain at most one default tag')
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else:
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default_style = None
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styles = {}
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optionNames = {}
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# Put all the model fields in accepts[path]
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for modelElement in instanceDocument.findall('//*', ns):
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path = instanceDocument.getelementpath(modelElement)
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styles[path] = default_style
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optionNames[path] = etree.QName(modelElement).localname
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style_is_default = {k: True for k in styles.keys()}
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for exception in accepts.findall('./XternalApps:exception', ns):
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ref = exception.attrib['ref']
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style = exception.attrib['style']
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for modelElement in instanceDocument.findall(ref, exception.nsmap):
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path = instanceDocument.getelementpath(modelElement)
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if style_is_default[path]:
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style_is_default[path] = False
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styles[path] = style
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else:
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ValueError('overlapping exceptions in command/accepts/exception')
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pipe_in = None
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positionalArguments = {}
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namedArguments = []
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tempfiles = []
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tempdirs = []
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for modelElementPath, value in self.ModelInstance.items():
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style = styles[modelElementPath]
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type = self.types[modelElementPath]
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# Convert to the type expected by the tool
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if type.type == 'App::PropertyLink' and type.maybeMIMEType == 'image/svg+xml':
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import tempfile, os
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d = tempfile.mkdtemp()
|
|
svgfile = os.path.join(d, "sketch.svg")
|
|
tempfiles += [svgfile]
|
|
tempdirs += [d]
|
|
exportSVG(value, svgfile)
|
|
value = svgfile
|
|
else:
|
|
# TODO ################# convert the value from FreeCAD to what the program supports ###################
|
|
value = str(value)
|
|
|
|
if style == 'double-dash':
|
|
namedArguments += ['--' + optionNames[modelElementPath], value]
|
|
elif style == 'pipe':
|
|
if pipe_in != None:
|
|
raise ValueError('more then one option uses a "pipe" style')
|
|
pipe_in = value
|
|
elif style == 'positional':
|
|
pos = unknown_todo() ######################################### TODO ############################
|
|
positionalArguments[pos] = value
|
|
elif style == 'exitcode':
|
|
raise ValueError('exitcode is supported only for the output of the command, not for its input')
|
|
else:
|
|
raise ValueError('unsupported argument-passing style')
|
|
|
|
positionalArguments = [v for i, vs in sorted(positionalArguments.items()) for v in vs]
|
|
if pipe_in is not None:
|
|
pipe_in_handle = open(pipe_in)
|
|
|
|
# TODO: use the XML for this
|
|
d = tempfile.mkdtemp()
|
|
result_filename = os.path.join(d, "result.svg")
|
|
pipe_out = result_filename
|
|
tempfiles += [pipe_out]
|
|
tempdirs += [d]
|
|
pipe_out_handle = open(pipe_out, 'w')
|
|
|
|
import subprocess
|
|
print([commandName] + positionalArguments + namedArguments + ['stdin=' + pipe_in, 'stdout=' + pipe_out])
|
|
proc = subprocess.Popen([commandName] + positionalArguments + namedArguments, stdin=pipe_in_handle, stdout=pipe_out_handle)
|
|
proc.communicate()
|
|
exitcode = proc.returncode
|
|
|
|
pipe_in_handle.close()
|
|
with open(result_filename, 'rb') as result_file:
|
|
result = result_file.read()
|
|
pipe_out_handle.close()
|
|
|
|
# Circumvent bug which leaves App.ActiveDocument to an incorrect value after the newDocument + closeDocument
|
|
oldActiveDocumentName = App.ActiveDocument.Name
|
|
tempDocument = App.newDocument('load_svg', hidden=True)
|
|
import importSVG
|
|
importSVG.insert(pipe_out,'load_svg')
|
|
solids = []
|
|
for o in tempDocument.Objects:
|
|
shape = o.Shape
|
|
wire = Part.Wire(shape.Edges)
|
|
#face = Part.Face(wire)
|
|
solids += [wire] #face
|
|
p = Part.makeCompound(solids)
|
|
for obj in tempDocument.Objects:
|
|
print("remove:" + obj.Name)
|
|
tempDocument.removeObject(obj.Name)
|
|
Part.show(p)
|
|
for o in tempDocument.Objects:
|
|
o2 = document.copyObject(o, False, False)
|
|
App.closeDocument('load_svg')
|
|
App.setActiveDocument(oldActiveDocumentName)
|
|
|
|
for tempfile in tempfiles:
|
|
os.remove(tempfile)
|
|
for tempdir in tempdirs:
|
|
os.rmdir(tempdir)
|
|
|
|
print(exitcode, result)
|
|
|
|
def execute(self, obj):
|
|
print("""This is called when the object is recomputed""")
|
|
self.xmlCommandToPython(obj.Document)
|
|
|
|
#<XternalApps:accepts>
|
|
# <XternalApps:default ref=".//*" style="double-dash">
|
|
# <XternalApps:exception ref="my:svgfile" style="pipe" />
|
|
#</XternalApps:accepts>
|
|
|
|
#<XternalApps:returns>
|
|
# <XternalApps:exception ref="my:output-svgfile" style="pipe" />
|
|
# <XternalApps:exception ref="my:output-exitcode" style="exitcode" />
|
|
#</XternalApps:returns>
|
|
|
|
|