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Merge pull request solvcon#449 from yungyuc/feature/gmsh-dialog3
Enhance: Add a file dialog for loading Gmsh file
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| Original file line number | Diff line number | Diff line change |
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| # Copyright (c) 2021, Yung-Yu Chen <[email protected]> | ||
| # | ||
| # Redistribution and use in source and binary forms, with or without | ||
| # modification, are permitted provided that the following conditions are met: | ||
| # | ||
| # - Redistributions of source code must retain the above copyright notice, this | ||
| # list of conditions and the following disclaimer. | ||
| # - Redistributions in binary form must reproduce the above copyright notice, | ||
| # this list of conditions and the following disclaimer in the documentation | ||
| # and/or other materials provided with the distribution. | ||
| # - Neither the name of the copyright holder nor the names of its contributors | ||
| # may be used to endorse or promote products derived from this software | ||
| # without specific prior written permission. | ||
| # | ||
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | ||
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
| # POSSIBILITY OF SUCH DAMAGE. | ||
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| """ | ||
| Show meshes. | ||
| """ | ||
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| import os | ||
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| from PySide6 import QtCore, QtWidgets, QtGui | ||
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| from .. import core | ||
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| __all__ = [ # noqa: F822 | ||
| 'GmshFileDialog', | ||
| ] | ||
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| def _add_menu_item(mainWindow, menu, text, tip, func): | ||
| act = QtGui.QAction(text, mainWindow) | ||
| act.setStatusTip(tip) | ||
| act.triggered.connect(func) | ||
| menu.addAction(act) | ||
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| class GmshFileDialog(QtCore.QObject): | ||
| def __init__(self, *args, **kw): | ||
| self._mgr = kw.pop('mgr') | ||
| super(GmshFileDialog, self).__init__(*args, **kw) | ||
| self._diag = QtWidgets.QFileDialog() | ||
| self._diag.setFileMode(QtWidgets.QFileDialog.ExistingFile) | ||
| self._diag.setDirectory(self._get_initial_path()) | ||
| self._diag.setWindowTitle('Open Gmsh file ...') | ||
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| def run(self): | ||
| self._diag.open(self, QtCore.SLOT('on_finished()')) | ||
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| def populate_menu(self): | ||
| _add_menu_item( | ||
| mainWindow=self._mgr.mainWindow, | ||
| menu=self._mgr.fileMenu, | ||
| text="Open Gmsh file", | ||
| tip="Open Gmsh file", | ||
| func=self.run, | ||
| ) | ||
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| @QtCore.Slot() | ||
| def on_finished(self): | ||
| filenames = [] | ||
| for path in self._diag.selectedFiles(): | ||
| filenames.append(path) | ||
| self._load_gmsh_file(filename=filenames[0]) | ||
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| @staticmethod | ||
| def _get_initial_path(): | ||
| """ | ||
| Search for `tests/data/rectangle.msh` and return the directory holding | ||
| it. If not found, return an empty string. | ||
| :return: The holding directory in absolute path or empty string. | ||
| """ | ||
| found = '' | ||
| for dp in ('.', core.__file__): | ||
| dp = os.path.dirname(os.path.abspath(dp)) | ||
| dp2 = os.path.dirname(dp) | ||
| while dp != dp2: | ||
| tp = os.path.join(dp, "tests", "data") | ||
| fp = os.path.join(tp, "rectangle.msh") | ||
| if os.path.exists(fp): | ||
| found = tp | ||
| break | ||
| dp = dp2 | ||
| dp2 = os.path.dirname(dp) | ||
| if found: | ||
| break | ||
| return found | ||
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| def _load_gmsh_file(self, filename): | ||
| if not os.path.exists(filename): | ||
| self._pycon.writeToHistory(f"{filename} does not exist\n") | ||
| return | ||
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| with open(filename, 'rb') as fobj: | ||
| data = fobj.read() | ||
| self._pycon.writeToHistory(f"gmsh mesh file {filename} is read\n") | ||
| gmsh = core.Gmsh(data) | ||
| mh = gmsh.to_block() | ||
| self._pycon.writeToHistory("StaticMesh object created from gmsh\n") | ||
| # Open a sub window for triangles and quadrilaterals: | ||
| w = self._mgr.add3DWidget() | ||
| w.updateMesh(mh) | ||
| w.showMark() | ||
| self._pycon.writeToHistory(f"nedge: {mh.nedge}\n") | ||
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| @property | ||
| def _pycon(self): | ||
| return self._mgr.pycon | ||
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| # vim: set ff=unix fenc=utf8 et sw=4 ts=4 sts=4: |
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