MainWindow/PluginRoot classes mixed #191
As internally KLayout internally identifies MainWindow with PluginRoot, but does not expose this identity as an implementation detail, the Python class mapping is getting messed up.
One symptom is the result of
which is a MainWindow object, but does not implementat the PluginRoot object. The other way has been reported too: "pya.MainWindow.instance()" apparently returns a "PluginRoot" object as well (https://www.klayout.de/forum/discussion/1140/the-return-type-of-pya-mainwindow-instance-is-sometimes-wrong#latest).
The text was updated successfully, but these errors were encountered:
I now better understood what's going on and there is a workaround.
Actually, the wrong class gets assigned because the first time, a C++ object is bound in Python space, the type will be assigned. In this case, there are two types that apply (MainWindow and PluginRoot). So if the MainWindow object is bound the first time in MainWindow context (i.e. through "pya.MainWindow.instance()", it gets MainWindow class. If it's bound the first time in "PluginRoot" context, it gets "PluginRoot" class. The latter happens implicitly for example for the "root" parameter in "PluginFactory.create_plugin".
Consider this code from https://www.klayout.de/forum/discussion/1151/capture-a-mouse-click-and-its-location#latest:
When the plugin is created, the "root" argument of "create_plugin" will bind the MainWindow object to PluginRoot unless it was bound otherwise. Hence there is a simple workaround by explicitly binding before "create_plugin" is called:
Please note that this is only because of the ambiguity of MainWindow/PluginRoot. All other objects are not affected by this issue.
0.25.6 (2018-11-23): * Enhancement: KLayout/klayout#199 Added an option to export DXF polygons as LINE objects * Bugfix: KLayout/klayout#198 Stitching of DXF contours wasn't taking nearest neighbours * Bugfix: KLayout/klayout#191 MainWindow/PluginRoot classes got mixed up As a side effect of this fix, layout views can now be configured individually. This wasn't working consistently before. 0.25.5 (2018-10-20): * Bugfix: KLayout/klayout#162 GDS2 LIBNAME was not maintained on "File/Save". * Bugfix: KLayout/klayout#166 Internal error when writing GDS files (breaking of polygons) * Bugfix: KLayout/klayout#172 DEF reader did not pull vias from LEF * Bugfix: KLayout/klayout#174 Performance issue with many layers with width >1 * Bugfix: KLayout/klayout#176 Painting issue with texts * Bugfix: KLayout/klayout#185 Hash values available as __hash__ standard method now for Python * Bugfix: some potential memory corruption issues fixed During the efforts for making the code base compatible with MSVC, some potential candidates for memory corruption have been identified and fixed. These fixes are included in this release.