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Gui: Provide ViewProviderFeaturePython selection callbacks

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Adds support for Python-based selection callbacks to
`ViewProviderFeaturePython` objects.

It follows the same conventions as `SelectionObserverPython`, follows an
example:

```python
    def setPreselection(self, document, object, element):
        print("setPreselection: %s.%s.%s"%(document, object, element))

    def removePreselection(self, document, object, element):
print("removePreselection: %s.%s.%s"%(document, object,
element))

    def addSelection(self, document, object, element, position):
print("addSelection: %s.%s.%s at %s"%(document, object, element,
str(position)))

    def removeSelection(self,document, object, element):
        print("removeSelection: %s.%s.%s"%(document, object, element))

    def setSelection(self,doc):
        sel = FreeCADGui.Selection.getSelection(doc)
        print("setSelection: %s"%sel)

    def clearSelection(self,doc):
        print("clearSelection\n")
```
This commit is contained in:
tritao
2025-01-15 21:05:07 +00:00
parent 9c0b95b569
commit b1a24deac6
6 changed files with 84 additions and 8 deletions
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10
src/Gui/ViewProviderFeaturePython.cpp
View File

@@ -36,6 +36,7 @@
#include <App/DocumentObjectPy.h>
#include <Base/Interpreter.h>
#include <Base/Tools.h>
#include <CXX/Python3/Objects.hxx>
#include "ViewProviderFeaturePython.h"
#include "Application.h"
@@ -44,6 +45,7 @@
#include "PythonWrapper.h"
#include "View3DInventorViewer.h"
#include "ViewProviderDocumentObjectPy.h"
#include "Selection.h"
FC_LOG_LEVEL_INIT("ViewProviderFeaturePython", true, true)
@@ -74,6 +76,8 @@ ViewProviderFeaturePythonImp::~ViewProviderFeaturePythonImp()
catch (Py::Exception& e) {
e.clear();
}
this->selectionObserver.~SelectionObserverPythonHandler();
}
void ViewProviderFeaturePythonImp::init(PyObject *pyobj) {
@@ -84,6 +88,8 @@ void ViewProviderFeaturePythonImp::init(PyObject *pyobj) {
#define FC_PY_ELEMENT(_name) FC_PY_ELEMENT_INIT(_name)
FC_PY_VIEW_OBJECT
this->selectionObserver.init(pyobj);
}
#define FC_PY_CALL_CHECK(_name) _FC_PY_CALL_CHECK(_name,return(NotImplemented))
@@ -202,6 +208,10 @@ ViewProviderFeaturePythonImp::useNewSelectionModel() const
return Accepted;
}
void ViewProviderFeaturePythonImp::onSelectionChanged(const SelectionChanges& changes) {
this->selectionObserver.handleSelectionChanged(changes);
}
bool ViewProviderFeaturePythonImp::getElement(const SoDetail *det, std::string &res) const
{
_FC_PY_CALL_CHECK(getElement,return(false));