Fix build failure with GDL >= 3.6

Fixed bugs:
  - https://launchpad.net/bugs/1196070

(bzr r12407)

3 files changed, 31 insertions, 9 deletions

diff --git a/configure.ac b/configure.ac
index 0e5c15382..b2b794617 100644
--- a/configure.ac
+++ b/configure.ac
@@ -674,6 +674,16 @@ if test "x$enable_gtk3" = "xyes"; then
 		AC_MSG_ERROR([Some dependencies were not fulfilled for the experimental GTK+ 3 build. One possible cause for this is a new dependency on the gdl-3.0 development package.])
 	fi
 
+	# Check whether we are using Gdl >= 3.6.  This version introduced an API/ABI change.
+	# TODO: We should drop support for older versions of Gdl once all supported distros
+	#       provide Gdl 3.6 or higher
+	PKG_CHECK_MODULES(GDL_3_6, gdl-3.0 >= 3.6, with_gdl_3_6=yes, with_gdl_3_6=no)
+
+	if test "x$with_gdl_3_6" = "xyes"; then
+		AC_MSG_RESULT([Using Gdl 3.6 or higher])
+		AC_DEFINE(WITH_GDL_3_6,1,[Build with Gdl 3.6 or higher])
+	fi
+
 	dnl The following test is only defined if Gtk+ 3 development libraries
 	dnl are installed on the system.  Therefore, it is guarded by an 
 	dnl m4_ifdef statement.  The ifdef can be probably be removed once we 
diff --git a/src/ui/widget/dock.cpp b/src/ui/widget/dock.cpp
index 2bfc7e0df..52e9ea605 100644
--- a/src/ui/widget/dock.cpp
+++ b/src/ui/widget/dock.cpp
@@ -48,11 +48,21 @@ const int Dock::_default_dock_bar_width = 36;
 
 
 Dock::Dock(Gtk::Orientation orientation)
-    : _gdl_dock (GDL_DOCK (gdl_dock_new())),
-      _gdl_dock_bar (GDL_DOCK_BAR (gdl_dock_bar_new(GDL_DOCK(_gdl_dock)))),
+    : _gdl_dock(gdl_dock_new()),
+#if WITH_GDL_3_6
+      _gdl_dock_bar(GDL_DOCK_BAR(gdl_dock_bar_new(G_OBJECT(_gdl_dock)))),
+#else
+      _gdl_dock_bar(GDL_DOCK_BAR(gdl_dock_bar_new(GDL_DOCK(_gdl_dock)))),
+#endif
       _scrolled_window (Gtk::manage(new Gtk::ScrolledWindow))
 {
-    gdl_dock_bar_set_orientation(_gdl_dock_bar, static_cast<GtkOrientation>(orientation));
+#if WITH_GDL_3_6
+    gtk_orientable_set_orientation(GTK_ORIENTABLE(_gdl_dock_bar),
+                                   static_cast<GtkOrientation>(orientation));
+#else
+    gdl_dock_bar_set_orientation(_gdl_dock_bar,
+                                 static_cast<GtkOrientation>(orientation));
+#endif
 
 #if WITH_GTKMM_3_0
     switch(orientation) {
@@ -127,7 +137,9 @@ Dock::~Dock()
 void Dock::addItem(DockItem& item, DockItem::Placement placement)
 {
     _dock_items.push_back(&item);
-    gdl_dock_add_item(_gdl_dock, GDL_DOCK_ITEM(item.gobj()), (GdlDockPlacement)placement);
+    gdl_dock_add_item(GDL_DOCK(_gdl_dock),
+                      GDL_DOCK_ITEM(item.gobj()),
+                      (GdlDockPlacement)placement);
 
     // FIXME: This is a hack to prevent the dock from expanding the main window, this can't be done
     // initially as the paned doesn't exist.
diff --git a/src/ui/widget/dock.h b/src/ui/widget/dock.h
index 611c10f46..33e60b836 100644
--- a/src/ui/widget/dock.h
+++ b/src/ui/widget/dock.h
@@ -74,11 +74,11 @@ protected:
     /** Interface widgets, will be packed like 
      * _scrolled_window -> (_dock_box -> (_paned -> (_dock -> _filler) | _dock_bar))
      */
-    Gtk::Box *_dock_box;
-    Gtk::Paned* _paned;
-    GdlDock *_gdl_dock;
-    GdlDockBar *_gdl_dock_bar;
-    Gtk::VBox _filler;
+    Gtk::Box            *_dock_box;
+    Gtk::Paned          *_paned;
+    GtkWidget           *_gdl_dock;
+    GdlDockBar          *_gdl_dock_bar;
+    Gtk::VBox            _filler;
     Gtk::ScrolledWindow *_scrolled_window;
 
     /** Internal signal handlers */