use VCL's OpenGLContext for 3D transitions

Change-Id: I510518461eb8bc9669d0de2679c34c473f66b175

include/vcl/opengl/OpenGLContext.hxx

@@ -150,7 +150,10 @@ public:
 
     void makeCurrent();
     void swapBuffers();
+    void sync();
+    void show();
 
+    void setWinPosAndSize(const Point &rPos, const Size& rSize);
     void setWinSize(const Size& rSize);
     GLWindow& getOpenGLWindow();
 

slideshow/Library_OGLTrans.mk

@@ -31,11 +31,13 @@ $(eval $(call gb_Library_use_libraries,OGLTrans,\
     cppuhelper \
     sal \
     vcl \
+    vclopengl \
 	$(gb_UWINAPI) \
 ))
 
 $(eval $(call gb_Library_use_externals,OGLTrans,\
 	boost_headers \
+	glew \
 	mesa_headers \
 ))
 

slideshow/source/engine/OGLTrans/generic/OGLTrans_TransitionImpl.hxx

@@ -33,20 +33,18 @@
 #include <boost/noncopyable.hpp>
 #include <boost/shared_ptr.hpp>
 
-#include <basegfx/vector/b2dvector.hxx>
-#include <basegfx/vector/b3dvector.hxx>
-
-#include <vector>
-
 #ifdef _WIN32
-// <GL/gl.h> includes <windows.h>, so include that early through
-// <prewin.h> to avoid name clashes from at least GDI's Rectangle().
 #include <prewin.h>
 #include <postwin.h>
 #endif
 
 #include <GL/gl.h>
 
+#include <basegfx/vector/b2dvector.hxx>
+#include <basegfx/vector/b3dvector.hxx>
+
+#include <vector>
+
 class Primitive;
 class Operation;
 class SceneObject;

vcl/source/opengl/OpenGLContext.cxx

@@ -551,6 +551,17 @@ bool OpenGLContext::ImplInit()
     return true;
 }
 
+void OpenGLContext::setWinPosAndSize(const Point &rPos, const Size& rSize)
+{
+    if(m_pWindow)
+        m_pWindow->SetPosSizePixel(rPos, rSize);
+    if( m_pChildWindow )
+        m_pChildWindow->SetPosSizePixel(rPos, rSize);
+
+    m_aGLWin.Width = rSize.Width();
+    m_aGLWin.Height = rSize.Height();
+}
+
 void OpenGLContext::setWinSize(const Size& rSize)
 {
     if(m_pWindow)
@@ -795,4 +806,24 @@ void OpenGLContext::swapBuffers()
 #endif
 }
 
+void OpenGLContext::sync()
+{
+#if defined( WNT )
+    // nothing
+#elif defined( MACOSX ) || defined( IOS ) || defined( ANDROID )
+    // nothing
+#elif defined( UNX )
+    glXWaitGL();
+    XSync(m_aGLWin.dpy, false);
+#endif
+}
+
+void OpenGLContext::show()
+{
+    if (m_pChildWindow)
+        m_pChildWindow->Show();
+    else if (m_pWindow)
+        m_pWindow->Show();
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */