Image: modernize C++11

* remove redundant void-arg
* use nullptr
* replace deprecated headers

src/Mod/Image/App/ImagePlane.cpp

@@ -38,7 +38,7 @@ PROPERTY_SOURCE(Image::ImagePlane, App::GeoFeature)
 
 ImagePlane::ImagePlane()
 {
-    ADD_PROPERTY_TYPE( ImageFile,(0)  , "ImagePlane",Prop_None,"File of the image");
+    ADD_PROPERTY_TYPE( ImageFile,(nullptr)  , "ImagePlane",Prop_None,"File of the image");
     ADD_PROPERTY_TYPE( XSize,    (100), "ImagePlane",Prop_None,"Size of a pixel in X");
     ADD_PROPERTY_TYPE( YSize,    (100), "ImagePlane",Prop_None,"Size of a pixel in Y");
 }

src/Mod/Image/App/ImagePlane.h

@@ -38,7 +38,7 @@ class ImageExport ImagePlane : public App::GeoFeature
 
 public:
     /// Constructor
-    ImagePlane(void);
+    ImagePlane();
     virtual ~ImagePlane();
 
     App::PropertyFileIncluded ImageFile;
@@ -46,7 +46,7 @@ public:
     App::PropertyLength       YSize;
 
     /// returns the type name of the ViewProvider
-    virtual const char* getViewProviderName(void) const {
+    virtual const char* getViewProviderName() const {
         return "ImageGui::ViewProviderImagePlane";
     }
 };

src/Mod/Image/Gui/AppImageGui.cpp

@@ -23,7 +23,7 @@
 #include "ViewProviderImagePlane.h"
 
 // use a different name to CreateCommand()
-void CreateImageCommands(void);
+void CreateImageCommands();
 
 void loadImageResource()
 {
@@ -42,7 +42,7 @@ PyMOD_INIT_FUNC(ImageGui)
 {
     if (!Gui::Application::Instance) {
         PyErr_SetString(PyExc_ImportError, "Cannot load Gui module in console application.");
-        PyMOD_Return(0);
+        PyMOD_Return(nullptr);
     }
 
     PyObject* mod = ImageGui::initModule();

src/Mod/Image/Gui/AppImageGuiPy.cpp

@@ -58,7 +58,7 @@ private:
     Py::Object open(const Py::Tuple& args)
     {
         char* Name;
-        const char* DocName=0;
+        const char* DocName=nullptr;
         if (!PyArg_ParseTuple(args.ptr(), "et|s","utf-8",&Name,&DocName))
             throw Py::Exception();
 

src/Mod/Image/Gui/CMakeLists.txt

@@ -51,13 +51,13 @@ SET(ImageGui_SRCS
     Command.cpp
     ImageOrientationDialog.cpp
     ImageOrientationDialog.h
+    OpenGLImageBox.cpp
+    OpenGLImageBox.h
     ViewProviderImagePlane.cpp
     ViewProviderImagePlane.h
     Resources/Image.qrc
     ImageView.cpp
     ImageView.h
-    OpenGLImageBox.cpp
-    OpenGLImageBox.h
     PreCompiled.cpp
     PreCompiled.h
     Workbench.cpp

src/Mod/Image/Gui/Command.cpp

@@ -19,7 +19,7 @@
 # include <QTextStream>
 #endif
 
-#include <time.h>
+#include <ctime>
 #if defined(FC_OS_WIN32)
 #include <sys/timeb.h>
 #endif
@@ -187,7 +187,7 @@ void CmdImageScaling::activated(int iMsg)
 
 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 #if HAVE_OPENCV2
-DEF_STD_CMD(CmdImageCapturerTest);
+DEF_STD_CMD(CmdImageCapturerTest)
 
 CmdImageCapturerTest::CmdImageCapturerTest()
   : Command("Image_CapturerTest")
@@ -226,7 +226,7 @@ void CmdImageCapturerTest::activated(int iMsg)
 }
 #endif
 
-void CreateImageCommands(void)
+void CreateImageCommands()
 {
     Gui::CommandManager &rcCmdMgr = Gui::Application::Instance->commandManager();
 

src/Mod/Image/Gui/ImageView.cpp

@@ -39,7 +39,7 @@ using namespace ImageGui;
 TYPESYSTEM_SOURCE_ABSTRACT(ImageGui::ImageView, Gui::MDIView)
 
 ImageView::ImageView(QWidget* parent)
-  : MDIView(0, parent), _ignoreCloseEvent(false)
+  : MDIView(nullptr, parent), _ignoreCloseEvent(false)
 {
     // Create an OpenGL widget for displaying images
     // Since Qt5 there is a weird behaviour when creating a GLImageBox.

src/Mod/Image/Gui/ViewProviderImagePlane.cpp

@@ -74,7 +74,7 @@ ViewProviderImagePlane::~ViewProviderImagePlane()
 
 void ViewProviderImagePlane::attach(App::DocumentObject *pcObj)
 {
-    ViewProviderDocumentObject::attach(pcObj);
+    ViewProviderGeometryObject::attach(pcObj);
 
     // NOTE: SoFCSelection node has beem removed because it led to
     // problems using the image as a construction plane with the
@@ -114,7 +114,7 @@ void ViewProviderImagePlane::setDisplayMode(const char* ModeName)
     ViewProviderGeometryObject::setDisplayMode(ModeName);
 }
 
-std::vector<std::string> ViewProviderImagePlane::getDisplayModes(void) const
+std::vector<std::string> ViewProviderImagePlane::getDisplayModes() const
 {
     std::vector<std::string> StrList;
     StrList.push_back("ImagePlane");