0029571: Samples: build qt samples together with OCCT

Extending CMake procedure by 'BUILD_MODULE_QtSamples' variable to switch on qt samples build.
Implementation required:
- union of occt_toolkit_tool.cmake and occt_toolkit.cmake files;
- correction of qt samples sources by adding path to Qt 'plugins' folder. It helps to avoid definition of additional variable (QT_QPA_PLATFORM_PLUGIN_PATH) when staring sample.bat for qt samples;
- executable processing is extended in cmake procedure by providing 'EXECUTABLE_PROJECT' variable. Now we need not specify custom processing for DRAWEXE in occt_toolkit.cmake

samples/qt/Tutorial/src/ApplicationTut.cxx

@@ -1,6 +1,8 @@
 #include "ApplicationTut.h"
 #include "DocumentTut.h"
 
+#include <OSD_Environment.hxx>
+
 #include <QFileDialog>
 #include <QStatusBar>
 #include <QMdiSubWindow>
@@ -59,7 +61,8 @@ void ApplicationTut::onMakeBottleAction()
 
 QString ApplicationTut::getTutResourceDir()
 {
-  static QString resDir (qgetenv ("CSF_TutorialResourcesDefaults").constData());
+  static QString resDir (OSD_Environment ("CSF_TutorialResourcesDefaults").Value().ToCString());
+  if (resDir.isEmpty())
+    resDir = QString (OSD_Environment ("CSF_OCCTResourcePath").Value().ToCString()) + "/samples";
   return resDir;
 }
-

samples/qt/Tutorial/src/FILES

@@ -0,0 +1,8 @@
+ApplicationTut.cxx
+ApplicationTut.h
+DocumentTut.cxx
+DocumentTut.h
+Main.cxx
+MakeBottle.cxx
+Tutorial-icon.ts
+Tutorial-string.ts

samples/qt/Tutorial/src/Main.cxx

@@ -1,10 +1,17 @@
 #include "ApplicationTut.h"
 
+#include <OSD_Environment.hxx>
+
 #include <QApplication>
 #include <QTranslator>
 
 int main ( int argc, char* argv[] )
 {
+#if QT_VERSION > 0x050000
+    TCollection_AsciiString aPlugindsDirName = OSD_Environment ("QTDIR").Value();
+    if (!aPlugindsDirName.IsEmpty())
+      QApplication::addLibraryPath (QString (aPlugindsDirName.ToCString()) + "/plugins");
+#endif
     QApplication a( argc, argv );
 
     QString resDir = ApplicationCommonWindow::getResourceDir();