FreeCAD

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#***************************************************************************
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#*                                                                         *
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#*   Copyright (c) 2021 Yorik van Havre <yorik@uncreated.net>              *
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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 Lesser General Public License (LGPL)    *
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#*   as published by the Free Software Foundation; either version 2 of     *
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#*   the License, or (at your option) any later version.                   *
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#*   for detail see the LICENCE text file.                                 *
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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 Library General Public License for more details.                  *
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#*                                                                         *
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#*   You should have received a copy of the GNU Library General Public     *
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#*   License along with this program; if not, write to the Free Software   *
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#*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
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#*   USA                                                                   *
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#*                                                                         *
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#***************************************************************************
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"""This module contains FreeCAD commands for the Draft workbench"""
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import os
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import FreeCAD
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from draftguitools import gui_base
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from draftutils import params
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from draftutils.translate import QT_TRANSLATE_NOOP, translate
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class Draft_Hatch(gui_base.GuiCommandSimplest):
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    def GetResources(self):
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        return {'Pixmap'  : "Draft_Hatch",
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                'MenuText': QT_TRANSLATE_NOOP("Draft_Hatch", "Hatch"),
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                'Accel': "H, A",
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                'ToolTip' : QT_TRANSLATE_NOOP("Draft_Hatch", "Creates hatches on the faces of a selected object")}
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    def Activated(self):
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        import FreeCADGui
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        if FreeCADGui.Selection.getSelection():
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            FreeCADGui.Control.showDialog(Draft_Hatch_TaskPanel(FreeCADGui.Selection.getSelection()[0]))
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        else:
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            FreeCAD.Console.PrintError(translate("Draft","You must choose a base object before using this command")+"\n")
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class Draft_Hatch_TaskPanel:
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    def __init__(self,baseobj):
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        import FreeCADGui
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        from PySide import QtCore,QtGui
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        import Draft_rc
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        self.baseobj = baseobj
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        self.form = FreeCADGui.PySideUic.loadUi(":/ui/dialogHatch.ui")
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        self.form.setWindowIcon(QtGui.QIcon(":/icons/Draft_Hatch.svg"))
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        self.form.File.fileNameChanged.connect(self.onFileChanged)
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        self.form.File.setFileName(params.get_param("FilePattern", path="Mod/TechDraw/PAT"))
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        pat = params.get_param("NamePattern", path="Mod/TechDraw/PAT")
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        if pat in [self.form.Pattern.itemText(i) for i in range(self.form.Pattern.count())]:
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            self.form.Pattern.setCurrentText(pat)
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        self.form.Scale.setValue(params.get_param("HatchPatternScale"))
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        self.form.Rotation.setValue(params.get_param("HatchPatternRotation"))
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    def accept(self):
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        import FreeCADGui
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        params.set_param("FilePattern", self.form.File.property("fileName"), path="Mod/TechDraw/PAT")
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        params.set_param("NamePattern", self.form.Pattern.currentText(), path="Mod/TechDraw/PAT")
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        params.set_param("HatchPatternScale", self.form.Scale.value())
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        params.set_param("HatchPatternRotation", self.form.Rotation.value())
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        if hasattr(self.baseobj,"File") and hasattr(self.baseobj,"Pattern"):
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            # modify existing hatch object
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            o = "FreeCAD.ActiveDocument.getObject(\""+self.baseobj.Name+"\")"
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            FreeCADGui.doCommand(o+".File=\""+self.form.File.property("fileName")+"\"")
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            FreeCADGui.doCommand(o+".Pattern=\""+self.form.Pattern.currentText()+"\"")
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            FreeCADGui.doCommand(o+".Scale="+str(self.form.Scale.value()))
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            FreeCADGui.doCommand(o+".Rotation="+str(self.form.Rotation.value()))
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        else:
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            # create new hatch object
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            FreeCAD.ActiveDocument.openTransaction("Create Hatch")
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            FreeCADGui.addModule("Draft")
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            cmd = "Draft.make_hatch("
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            cmd += "baseobject=FreeCAD.ActiveDocument.getObject(\""+self.baseobj.Name
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            cmd += "\"),filename=\""+self.form.File.property("fileName")
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            cmd += "\",pattern=\""+self.form.Pattern.currentText()
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            cmd += "\",scale="+str(self.form.Scale.value())
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            cmd += ",rotation="+str(self.form.Rotation.value())+")"
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            FreeCADGui.doCommand(cmd)
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            FreeCAD.ActiveDocument.commitTransaction()
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        FreeCADGui.doCommand("FreeCAD.ActiveDocument.recompute()")
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        self.reject()
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    def reject(self):
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        import FreeCADGui
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        FreeCADGui.Control.closeDialog()
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        FreeCADGui.ActiveDocument.resetEdit()
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        FreeCAD.ActiveDocument.recompute()
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    def onFileChanged(self,filename):
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        pat = self.form.Pattern.currentText()
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        self.form.Pattern.clear()
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        patterns = self.getPatterns(filename)
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        self.form.Pattern.addItems(patterns)
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        if pat in patterns:
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            self.form.Pattern.setCurrentText(pat)
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    def getPatterns(self,filename):
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        """returns a list of pattern names found in a PAT file"""
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        patterns = []
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        if os.path.exists(filename):
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            with open(filename) as patfile:
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                for line in patfile:
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                    if line.startswith("*"):
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                        patterns.append(line.split(",")[0][1:])
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        return patterns
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if FreeCAD.GuiUp:
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    import FreeCADGui
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    FreeCADGui.addCommand("Draft_Hatch",Draft_Hatch())
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