Optional use of external osgEarthQt

CMakeLists.txt

@@ -95,6 +95,10 @@ SET (WITH_GLOBE FALSE CACHE BOOL "Determines whether Globe plugin should be buil
 IF (WITH_GLOBE)
   SET(QT_USE_QTOPENGL 1)
   FIND_PACKAGE(OSGEARTH REQUIRED)
+  IF (OSGEARTHQT_LIBRARY)
+    # following variable is used in qgsconfig.h
+    SET(HAVE_OSGEARTHQT TRUE)
+  ENDIF (OSGEARTHQT_LIBRARY)
 ENDIF (WITH_GLOBE)
 
 # Compile flag. Make it possible to turn it off.

cmake_templates/qgsconfig.h.in

@@ -38,5 +38,7 @@
 
 #cmakedefine HAVE_TOUCH
 
+#cmakedefine HAVE_OSGEARTHQT
+
 #endif
 

src/plugins/globe/CMakeLists.txt

@@ -17,6 +17,13 @@ SET (globe_plugin_SRCS
      qgsosgearthtilesource.cpp
      globe_plugin_dialog.cpp
 )
+IF (NOT HAVE_OSGEARTHQT)
+    SET(globe_plugin_SRCS
+        ${globe_plugin_SRCS}
+        osgEarthQt/ViewerWidget.cpp
+        osgEarthUtil/Controls.cpp
+        )
+ENDIF (NOT HAVE_OSGEARTHQT)
 
 SET (globe_plugin_UIS
      globe_plugin_dialog_guibase.ui
@@ -49,6 +56,17 @@ INCLUDE_DIRECTORIES(
      ..
 )
 
+SET (OSGEARTH_LIBS
+  ${OSGEARTH_LIBRARY}
+  ${OSGEARTHFEATURES_LIBRARY}
+  ${OSGEARTHUTIL_LIBRARY}
+)
+IF (HAVE_OSGEARTHQT)
+    SET(OSGEARTH_LIBS
+        ${OSGEARTH_LIBS}
+        ${OSGEARTHQT_LIBRARY}
+        )
+ENDIF (HAVE_OSGEARTHQT)
 TARGET_LINK_LIBRARIES(globeplugin
   qgis_core
   qgis_gui
@@ -59,10 +77,7 @@ TARGET_LINK_LIBRARIES(globeplugin
   ${OSG_LIBRARY}
   ${OSGQT_LIBRARY}
   ${OSGVIEWER_LIBRARY}
-  ${OSGEARTH_LIBRARY}
-  ${OSGEARTHFEATURES_LIBRARY}
-  ${OSGEARTHUTIL_LIBRARY}
-  ${OSGEARTHQT_LIBRARY}
+  ${OSGEARTH_LIBS}
   ${OPENTHREADS_LIBRARY}
 )
 

src/plugins/globe/globe_plugin.cpp

@@ -19,8 +19,11 @@
 #include "globe_plugin.h"
 #include "globe_plugin_dialog.h"
 #include "qgsosgearthtilesource.h"
+#ifdef HAVE_OSGEARTHQT
 #include <osgEarthQt/ViewerWidget>
-//#include "osgEarthQt/ViewerWidget"
+#else
+#include "osgEarthQt/ViewerWidget"
+#endif
 
 #include <cmath>
 
@@ -60,8 +63,6 @@
 
 using namespace osgEarth::Drivers;
 using namespace osgEarth::Util;
-using namespace osgEarth::Util::Controls;
-//using namespace osgEarth::Util::Controls21;
 
 #define MOVE_OFFSET 0.05
 

src/plugins/globe/globe_plugin.h

@@ -19,7 +19,8 @@
 #ifndef QGS_GLOBE_PLUGIN_H
 #define QGS_GLOBE_PLUGIN_H
 
-#include "../qgisplugin.h"
+#include "qgsconfig.h"
+#include "qgisplugin.h"
 #include "qgsosgearthtilesource.h"
 #include "globe_plugin_dialog.h"
 #include <QObject>
@@ -27,8 +28,16 @@
 #include <osgEarth/MapNode>
 #include <osgEarth/ImageLayer>
 #include <osgEarthUtil/EarthManipulator>
+#ifndef HAVE_OSGEARTHQT //use backported controls if osgEarth <= 2.1
+#define USE_BACKPORTED_CONTROLS
+#endif
+#ifdef USE_BACKPORTED_CONTROLS
+#include "osgEarthUtil/Controls"
+using namespace osgEarth::Util::Controls21;
+#else
 #include <osgEarthUtil/Controls>
-//#include "osgEarthUtil/Controls"
+using namespace osgEarth::Util::Controls;
+#endif
 #include <osgEarthUtil/ElevationManager>
 #include <osgEarthUtil/ObjectPlacer>
 
@@ -126,7 +135,7 @@ class GlobePlugin : public QObject, public QgisPlugin
     //! Tile source
     osgEarth::Drivers::QgsOsgEarthTileSource* mTileSource;
     //! Control Canvas
-    osgEarth::Util::Controls::ControlCanvas* mControlCanvas;
+    ControlCanvas* mControlCanvas;
     //! Elevation manager
     osgEarth::Util::ElevationManager* mElevationManager;
     //! Object placer
@@ -193,7 +202,11 @@ namespace osgEarth
 {
   namespace Util
   {
-    namespace Controls
+#ifdef USE_BACKPORTED_CONTROLS
+  namespace Controls21
+#else
+  namespace Controls
+#endif
     {
       class NavigationControlHandler : public ControlEventHandler
       {