add option to resize datum planes manually

src/Mod/PartDesign/App/DatumPlane.cpp

@@ -36,10 +36,20 @@ using namespace Attacher;
 
 // ============================================================================
 
+const char* Plane::ResizeModeEnums[]= {"Automatic","Manual",NULL};
+
 PROPERTY_SOURCE(PartDesign::Plane, Part::Datum)
 
 Plane::Plane()
 {
+    ADD_PROPERTY_TYPE(ResizeMode,(static_cast<long>(0)), "Size", App::Prop_None, "Automatic or manual resizing");
+    ResizeMode.setEnums(ResizeModeEnums);
+    ADD_PROPERTY_TYPE(Length,(20), "Size", App::Prop_None, "Length of the plane");
+    ADD_PROPERTY_TYPE(Width,(20), "Size", App::Prop_None, "Width of the plane");
+
+    Length.setReadOnly(true);
+    Width.setReadOnly(true);
+
     this->setAttacher(new AttachEnginePlane);
     // Create a shape, which will be used by the Sketcher. Them main function is to avoid a dependency of
     // Sketcher on the PartDesign module
@@ -47,7 +57,6 @@ Plane::Plane()
     if (!builder.IsDone())
         return;
     Shape.setValue(builder.Shape());
-
 }
 
 Plane::~Plane()
@@ -61,3 +70,19 @@ Base::Vector3d Plane::getNormal()
     rot.multVec(Base::Vector3d(0,0,1), normal);
     return normal;
 }
+
+void Plane::onChanged(const App::Property *prop)
+{
+    if (prop == &ResizeMode) {
+        if (ResizeMode.getValue() == 0) {
+            Length.setReadOnly(true);
+            Width.setReadOnly(true);
+        }
+        else {
+            Length.setReadOnly(false);
+            Width.setReadOnly(false);
+        }
+    }
+
+    Datum::onChanged(prop);
+}

src/Mod/PartDesign/App/DatumPlane.h

@@ -25,6 +25,7 @@
 #define PARTDESIGN_DATUMPLANE_H
 
 #include <Mod/Part/App/DatumFeature.h>
+#include <App/PropertyUnits.h>
 
 namespace PartDesign
 {
@@ -37,11 +38,19 @@ public:
     Plane();
     virtual ~Plane();
 
+    App::PropertyEnumeration ResizeMode;
+    App::PropertyLength Length;
+    App::PropertyLength Width;
+
+    virtual void onChanged(const App::Property *prop);
     const char* getViewProviderName(void) const {
         return "PartDesignGui::ViewProviderDatumPlane";
     }
 
     Base::Vector3d getNormal();
+
+private:
+    static const char* ResizeModeEnums[];
 };
 
 } //namespace PartDesign

src/Mod/PartDesign/Gui/ViewProviderDatumPlane.cpp

@@ -92,6 +92,12 @@ void ViewProviderDatumPlane::updateData(const App::Property* prop)
     if (strcmp(prop->getName(),"Placement") == 0) {
         updateExtents ();
     }
+    else if (strcmp(prop->getName(),"Length") == 0 ||
+             strcmp(prop->getName(),"Width") == 0) {
+        PartDesign::Plane* pcDatum = static_cast<PartDesign::Plane*>(this->getObject());
+        if (pcDatum->ResizeMode.getValue() != 0)
+            setExtents(pcDatum->Length.getValue(), pcDatum->Width.getValue());
+    }
 
     ViewProviderDatum::updateData(prop);
 }
@@ -99,6 +105,10 @@ void ViewProviderDatumPlane::updateData(const App::Property* prop)
 
 void ViewProviderDatumPlane::setExtents (Base::BoundBox3d bbox) {
     PartDesign::Plane* pcDatum = static_cast<PartDesign::Plane*>(this->getObject());
+    if (pcDatum->ResizeMode.getValue() != 0) {
+        setExtents(pcDatum->Length.getValue(), pcDatum->Width.getValue());
+        return;
+    }
 
     Base::Placement plm = pcDatum->Placement.getValue ().inverse ();
 
@@ -109,12 +119,23 @@ void ViewProviderDatumPlane::setExtents (Base::BoundBox3d bbox) {
 
     double margin = sqrt(bbox.LengthX ()*bbox.LengthY ()) * marginFactor ();
 
+    pcDatum->Length.setValue(bbox.LengthX() + 2*margin);
+    pcDatum->Width.setValue(bbox.LengthY() + 2*margin);
+
     // Change the coordinates of the line
     pCoords->point.setNum (4);
     pCoords->point.set1Value(0, bbox.MaxX + margin, bbox.MaxY + margin, 0 );
     pCoords->point.set1Value(1, bbox.MinX - margin, bbox.MaxY + margin, 0 );
     pCoords->point.set1Value(2, bbox.MinX - margin, bbox.MinY - margin, 0 );
     pCoords->point.set1Value(3, bbox.MaxX + margin, bbox.MinY - margin, 0 );
-
 }
 
+void ViewProviderDatumPlane::setExtents(double l, double w)
+{
+    // Change the coordinates of the line
+    pCoords->point.setNum (4);
+    pCoords->point.set1Value(0, l, w, 0);
+    pCoords->point.set1Value(1, 0, w, 0);
+    pCoords->point.set1Value(2, 0, 0, 0);
+    pCoords->point.set1Value(3, l, 0, 0);
+}

src/Mod/PartDesign/Gui/ViewProviderDatumPlane.h

@@ -42,6 +42,7 @@ public:
     virtual void updateData(const App::Property*);
 
     void setExtents (Base::BoundBox3d bbox);
+    void setExtents(double l, double w);
 
 private:
     SoCoordinate3 *pCoords;