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Gui: [skip ci] implement Python wrapper for ExpressionBinding
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4 files changed

+233
-1
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4 files changed

+233
-1
lines changed

‎src/Gui/Application.cpp

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@@ -93,6 +93,7 @@
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#include "DocumentRecovery.h"
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#include "TransactionObject.h"
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#include "FileDialog.h"
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#include "ExpressionBindingPy.h"
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#include "TextDocumentEditorView.h"
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#include "SplitView3DInventor.h"
@@ -384,6 +385,10 @@ Application::Application(bool GUIenabled)
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Py_INCREF(pySide->module().ptr());
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PyModule_AddObject(module, "PySideUic", pySide->module().ptr());
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ExpressionBindingPy::init_type();
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Base::Interpreter().addType(ExpressionBindingPy::type_object(),
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module,"ExpressionBinding");
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//insert Selection module
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#if PY_MAJOR_VERSION >= 3
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static struct PyModuleDef SelectionModuleDef = {

‎src/Gui/CMakeLists.txt

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@@ -1223,6 +1223,7 @@ SET(FreeCADGui_CPP_SRCS
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DocumentObserver.cpp
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DocumentObserverPython.cpp
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ExpressionBinding.cpp
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ExpressionBindingPy.cpp
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GraphicsViewZoom.cpp
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ExpressionCompleter.cpp
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GuiApplication.cpp
@@ -1249,7 +1250,8 @@ SET(FreeCADGui_SRCS
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DocumentModel.h
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DocumentObserver.h
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DocumentObserverPython.h
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ExpressionBinding.cpp
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ExpressionBinding.h
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ExpressionBindingPy.h
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ExpressionCompleter.h
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FreeCADGuiInit.py
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GraphicsViewZoom.h

‎src/Gui/ExpressionBindingPy.cpp

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/***************************************************************************
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* Copyright (c) 2020 Werner Mayer <wmayer[at]users.sourceforge.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library 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 library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 51 Franklin Street, *
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* Fifth Floor, Boston, MA 02110-1301, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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#endif
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#include "ExpressionBindingPy.h"
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#include "ExpressionBinding.h"
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#include "WidgetFactory.h"
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#include "QuantitySpinBox.h"
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#include "InputField.h"
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#include <App/DocumentObjectPy.h>
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using namespace Gui;
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void ExpressionBindingPy::init_type()
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{
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behaviors().name("ExpressionBinding");
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behaviors().doc("Python interface class for ExpressionBinding");
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// you must have overwritten the virtual functions
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behaviors().supportRepr();
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behaviors().supportGetattr();
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behaviors().supportSetattr();
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behaviors().set_tp_new(PyMake);
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behaviors().readyType();
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add_varargs_method("bind",&ExpressionBindingPy::bind,"Bind with an expression");
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add_varargs_method("isBound",&ExpressionBindingPy::isBound,"Check if already bound with an expression");
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add_varargs_method("apply",&ExpressionBindingPy::apply,"apply");
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add_varargs_method("hasExpression",&ExpressionBindingPy::hasExpression,"hasExpression");
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add_varargs_method("autoApply",&ExpressionBindingPy::autoApply,"autoApply");
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add_varargs_method("setAutoApply",&ExpressionBindingPy::setAutoApply,"setAutoApply");
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}
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PyObject *ExpressionBindingPy::PyMake(struct _typeobject *, PyObject * args, PyObject *)
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{
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Py::Tuple tuple(args);
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ExpressionBinding* expr = nullptr;
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PythonWrapper wrap;
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wrap.loadWidgetsModule();
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QWidget* obj = dynamic_cast<QWidget*>(wrap.toQObject(tuple.getItem(0)));
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if (obj) {
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do {
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QuantitySpinBox* sb = qobject_cast<QuantitySpinBox*>(obj);
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if (sb) {
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expr = sb;
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break;
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}
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InputField* le = qobject_cast<InputField*>(obj);
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if (le) {
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expr = le;
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break;
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}
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}
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while(false);
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}
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if (!expr) {
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PyErr_SetString(PyExc_TypeError, "Wrong type");
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return nullptr;
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}
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return new ExpressionBindingPy(expr);
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}
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ExpressionBindingPy::ExpressionBindingPy(ExpressionBinding* expr)
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: expr(expr)
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{
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}
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ExpressionBindingPy::~ExpressionBindingPy()
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{
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}
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Py::Object ExpressionBindingPy::repr()
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{
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std::stringstream s;
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s << "<ExpressionBinding at " << this << ">";
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return Py::String(s.str());
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}
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Py::Object ExpressionBindingPy::bind(const Py::Tuple& args)
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{
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PyObject* py;
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const char* str;
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if (!PyArg_ParseTuple(args.ptr(), "O!s", &App::DocumentObjectPy::Type, &py, &str))
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throw Py::Exception();
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try {
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App::DocumentObject* obj = static_cast<App::DocumentObjectPy*>(py)->getDocumentObjectPtr();
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App::ObjectIdentifier id(App::ObjectIdentifier::parse(obj, str));
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if (!id.getProperty()) {
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throw Base::AttributeError("Wrong property");
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}
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expr->bind(id);
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return Py::None();
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}
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catch (const Base::Exception& e) {
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e.setPyException();
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throw Py::Exception();
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}
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catch (...) {
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throw Py::RuntimeError("Cannot bind to object");
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}
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}
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Py::Object ExpressionBindingPy::isBound(const Py::Tuple& args)
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{
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if (!PyArg_ParseTuple(args.ptr(), ""))
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throw Py::Exception();
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return Py::Boolean(expr->isBound());
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}
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Py::Object ExpressionBindingPy::apply(const Py::Tuple& args)
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{
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const char* str;
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if (!PyArg_ParseTuple(args.ptr(), "s", &str))
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throw Py::Exception();
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return Py::Boolean(expr->apply(str));
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}
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Py::Object ExpressionBindingPy::hasExpression(const Py::Tuple& args)
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{
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if (!PyArg_ParseTuple(args.ptr(), ""))
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throw Py::Exception();
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return Py::Boolean(expr->hasExpression());
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}
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Py::Object ExpressionBindingPy::autoApply(const Py::Tuple& args)
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{
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if (!PyArg_ParseTuple(args.ptr(), ""))
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throw Py::Exception();
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return Py::Boolean(expr->autoApply());
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}
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Py::Object ExpressionBindingPy::setAutoApply(const Py::Tuple& args)
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{
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PyObject* b;
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if (!PyArg_ParseTuple(args.ptr(), "O!", &PyBool_Type, &b))
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throw Py::Exception();
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bool value = PyObject_IsTrue(b) ? true : false;
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expr->setAutoApply(value);
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return Py::None();
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}

‎src/Gui/ExpressionBindingPy.h

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/***************************************************************************
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* Copyright (c) 2020 Werner Mayer <wmayer[at]users.sourceforge.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
5+
* *
6+
* This library is free software; you can redistribute it and/or *
7+
* modify it under the terms of the GNU Library General Public *
8+
* License as published by the Free Software Foundation; either *
9+
* version 2 of the License, or (at your option) any later version. *
10+
* *
11+
* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
13+
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14+
* GNU Library General Public License for more details. *
15+
* *
16+
* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 51 Franklin Street, *
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* Fifth Floor, Boston, MA 02110-1301, USA *
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* *
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***************************************************************************/
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#ifndef EXPRESSIONBINDINGPY_H
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#define EXPRESSIONBINDINGPY_H
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#include <CXX/Extensions.hxx>
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namespace Gui {
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class ExpressionBinding;
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class ExpressionBindingPy : public Py::PythonExtension<ExpressionBindingPy>
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{
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public:
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static void init_type(void); // announce properties and methods
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ExpressionBindingPy(ExpressionBinding*);
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~ExpressionBindingPy();
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Py::Object repr();
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Py::Object bind(const Py::Tuple&);
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Py::Object isBound(const Py::Tuple&);
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Py::Object apply(const Py::Tuple&);
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Py::Object hasExpression(const Py::Tuple&);
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Py::Object autoApply(const Py::Tuple&);
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Py::Object setAutoApply(const Py::Tuple&);
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private:
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static PyObject *PyMake(struct _typeobject *, PyObject *, PyObject *);
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private:
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ExpressionBinding* expr;
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};
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}
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#endif // EXPRESSIONBINDING_H

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