Make Video Widget NOP; GDK Drawing no longer supported (#950)

Comment out the active part of the GdkDisplayer implementation,
but retain the class, to make compilation pass.

With the Switch to GTK-3, only Cairo drawing is supported.
We need a new solution for video display...

src/gui/output/gdkdisplayer.cpp

@@ -25,17 +25,9 @@
 #include "gui/gtk-lumiera.hpp"
 #include "gui/output/gdkdisplayer.hpp"
 
-/** The GdkDisplayer class is not supported in Gtk3.
+#if false  ///////////////////////////////////////////////////////////////////////////////////////////////////TICKET #950 : new solution for video display
- * This is due to Gtk3 only supporting drawing with
- * Cairo
- */
-void
-gdkdisplayer_gtk3_removal_func()
-{
-  FIXME("Remove: gtk3 does not support drawing with Gdk.");
-}
-#if 0
 #include <gdk/gdkx.h>
+#endif     ///////////////////////////////////////////////////////////////////////////////////////////////////TICKET #950 : new solution for video display
 #include <iostream>
 
 using std::cerr;
@@ -58,7 +50,7 @@ GdkDisplayer::GdkDisplayer( Gtk::Widget *drawing_area, int width, int height ) :
 bool
 GdkDisplayer::usable()
 {
-  return true;
+  return false;  /////////////////////////////////////////////////////////////////////////////////////////////TICKET #950 : new solution for video display
 }
 
 void
@@ -74,6 +66,7 @@ GdkDisplayer::put( const void* image )
   GdkWindow *window = drawingArea->get_window()->gobj();
   REQUIRE(window != NULL);  
     
+#if false  ///////////////////////////////////////////////////////////////////////////////////////////////////TICKET #950 : new solution for video display
   GdkGC *gc = gdk_gc_new( window );
   REQUIRE(gc != NULL);
   
@@ -89,9 +82,8 @@ GdkDisplayer::put( const void* image )
   g_object_unref( scaled_image );
   g_object_unref( pixbuf );
   g_object_unref( gc );
+#endif     ///////////////////////////////////////////////////////////////////////////////////////////////////TICKET #950 : new solution for video display
 }
 
 }   // namespace output
 }   // namespace gui
-
-#endif

src/gui/output/gdkdisplayer.hpp

@@ -33,8 +33,8 @@
 #ifndef GUI_OUTPUT_GDKDISPLAYER_H
 #define GUI_OUTPUT_GDKDISPLAYER_H
 
-#include "gui/output/displayer.hpp"
 #include "gui/gtk-base.hpp"
+#include "gui/output/displayer.hpp"
 
 namespace Gtk {
   class Widget;
@@ -46,6 +46,10 @@ namespace output {
 /**
  * GdkDisplayer is a class which is responsible for rendering a video
  * image via GDK.
+ *
+ * @todo the GdkDisplayer class is not supported anymore in Gtk3.
+ *       This is due to Gtk3 only supporting drawing with Cairo
+ *       /////////////////////////////////////////////////////////////////////////////////////////////////////TICKET #950 : new solution for video display
  */
 class GdkDisplayer
   : public Displayer

src/gui/widgets/video-display-widget.cpp

@@ -78,6 +78,7 @@ namespace widgets {
     if (displayer == NULL)
       {
         displayer = new GdkDisplayer (drawingArea, width, height);
+        ///////////////////////////////////////////////////////////////////////////////////////TICKET #950 : new solution for video display
       }
     
     return displayer;