Fem: Implement lineplot visualization

src/Mod/Fem/femtaskpanels/task_post_lineplot.py

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+# ***************************************************************************
+# *   Copyright (c) 2025 Stefan Tröger <stefantroeger@gmx.net>              *
+# *                                                                         *
+# *   This file is part of the FreeCAD CAx development system.              *
+# *                                                                         *
+# *   This program is free software; you can redistribute it and/or modify  *
+# *   it under the terms of the GNU Lesser General Public License (LGPL)    *
+# *   as published by the Free Software Foundation; either version 2 of     *
+# *   the License, or (at your option) any later version.                   *
+# *   for detail see the LICENCE text file.                                 *
+# *                                                                         *
+# *   This program is distributed in the hope that it will be useful,       *
+# *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+# *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+# *   GNU Library General Public License for more details.                  *
+# *                                                                         *
+# *   You should have received a copy of the GNU Library General Public     *
+# *   License along with this program; if not, write to the Free Software   *
+# *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
+# *   USA                                                                   *
+# *                                                                         *
+# ***************************************************************************
+
+__title__ = "FreeCAD FEM lineplot plot task panel"
+__author__ = "Stefan Tröger"
+__url__ = "https://www.freecad.org"
+
+## @package task_post_lineplot
+#  \ingroup FEM
+#  \brief task panel for post lineplot plot
+
+from PySide import QtCore, QtGui
+
+import FreeCAD
+import FreeCADGui
+
+from . import base_fempostpanel
+from femguiutils import extract_link_view as elv
+from femguiutils import vtk_table_view
+
+class _TaskPanel(base_fempostpanel._BasePostTaskPanel):
+    """
+    The TaskPanel for editing properties of glyph filter
+    """
+
+    def __init__(self, vobj):
+        super().__init__(vobj.Object)
+
+        # data widget
+        self.data_widget = QtGui.QWidget()
+        hbox = QtGui.QHBoxLayout()
+        self.data_widget.show_plot = QtGui.QPushButton()
+        self.data_widget.show_plot.setText("Show plot")
+        hbox.addWidget(self.data_widget.show_plot)
+        self.data_widget.show_table = QtGui.QPushButton()
+        self.data_widget.show_table.setText("Show data")
+        hbox.addWidget(self.data_widget.show_table)
+        vbox = QtGui.QVBoxLayout()
+        vbox.addItem(hbox)
+        vbox.addSpacing(10)
+
+        extracts = elv.ExtractLinkView(self.obj, False, self)
+        vbox.addWidget(extracts)
+
+        self.data_widget.setLayout(vbox)
+        self.data_widget.setWindowTitle("Lineplot data")
+
+
+        # lineplot parameter widget
+        self.view_widget = FreeCADGui.PySideUic.loadUi(
+            FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/TaskPostLineplot.ui"
+        )
+        self.view_widget.setWindowTitle("Lineplot view settings")
+        self.__init_widgets()
+
+        # form made from param and selection widget
+        self.form = [self.data_widget, self.view_widget]
+
+
+    # Setup functions
+    # ###############
+
+    def __init_widgets(self):
+
+        # connect data widget
+        self.data_widget.show_plot.clicked.connect(self.showPlot)
+        self.data_widget.show_table.clicked.connect(self.showTable)
+
+        # set current values to view widget
+        viewObj = self.obj.ViewObject
+
+        self._enumPropertyToCombobox(viewObj, "Scale", self.view_widget.Scale)
+        self.view_widget.Grid.setChecked(viewObj.Grid)
+
+        self.view_widget.Title.setText(viewObj.Title)
+        self.view_widget.XLabel.setText(viewObj.XLabel)
+        self.view_widget.YLabel.setText(viewObj.YLabel)
+
+        self.view_widget.LegendShow.setChecked(viewObj.Legend)
+        self._enumPropertyToCombobox(viewObj, "LegendLocation", self.view_widget.LegendPos)
+
+
+        # connect callbacks
+        self.view_widget.Scale.activated.connect(self.scaleChanged)
+        self.view_widget.Grid.toggled.connect(self.gridChanged)
+
+        self.view_widget.Title.editingFinished.connect(self.titleChanged)
+        self.view_widget.XLabel.editingFinished.connect(self.xLabelChanged)
+        self.view_widget.YLabel.editingFinished.connect(self.yLabelChanged)
+
+        self.view_widget.LegendShow.toggled.connect(self.legendShowChanged)
+        self.view_widget.LegendPos.activated.connect(self.legendPosChanged)
+
+
+    QtCore.Slot()
+    def showPlot(self):
+        self.obj.ViewObject.Proxy.show_visualization()
+
+    QtCore.Slot()
+    def showTable(self):
+
+        # TODO: make data model update when object is recomputed
+        data_model = vtk_table_view.VtkTableModel()
+        data_model.setTable(self.obj.Table)
+
+        dialog = QtGui.QDialog(self.data_widget)
+        widget = vtk_table_view.VtkTableView(data_model)
+        layout = QtGui.QVBoxLayout()
+        layout.addWidget(widget)
+        layout.setContentsMargins(0,0,0,0)
+
+        dialog.setLayout(layout)
+        dialog.resize(1500, 900)
+        dialog.show()
+
+
+    QtCore.Slot(int)
+    def scaleChanged(self, idx):
+        self.obj.ViewObject.Scale = idx
+
+    QtCore.Slot(bool)
+    def gridChanged(self, state):
+        self.obj.ViewObject.Grid = state
+
+    QtCore.Slot()
+    def titleChanged(self):
+        self.obj.ViewObject.Title = self.view_widget.Title.text()
+
+    QtCore.Slot()
+    def xLabelChanged(self):
+        self.obj.ViewObject.XLabel = self.view_widget.XLabel.text()
+
+    QtCore.Slot()
+    def yLabelChanged(self):
+        self.obj.ViewObject.YLabel = self.view_widget.YLabel.text()
+
+    QtCore.Slot(int)
+    def legendPosChanged(self, idx):
+        self.obj.ViewObject.LegendLocation = idx
+
+    QtCore.Slot(bool)
+    def legendShowChanged(self, state):
+        self.obj.ViewObject.Legend = state