[geary] --enable-unity flag to deal with GtkHeaderBar issues: Refs bgo#727624

[Jim Nelson <jnelson src gnome org>]

commit ce269c79bfccee61d3136ba0ca5bb04690f2dba5
Author: Jim Nelson <jim yorba org>
Date:   Fri Apr 4 14:56:38 2014 -0700

    --enable-unity flag to deal with GtkHeaderBar issues: Refs bgo#727624
    
    Unity doesn't deal well with pure GtkHeaderBar apps, so this allows
    for the GtkHeaderBar to be treated like a toolbar and the window
    retain its chrome.

 configure                              |    6 ++++++
 debian/rules                           |    2 +-
 src/CMakeLists.txt                     |   10 ++++++++++
 src/client/components/main-window.vala |    9 +++++++--
 4 files changed, 24 insertions(+), 3 deletions(-)
---
diff --git a/configure b/configure
index 89fb4c7..4eb7e9d 100755
--- a/configure
+++ b/configure
@@ -24,6 +24,8 @@ configure_help() {
        
          --disable-fatal-warnings
                                Disable Vala fatal warnings when compiling.
+         --enable-unity
+                               Enable Unity interface changes.
          --enable-ref-tracking
                                Enable reference tracking which is dumped to stdout when the program exits.
          --disable-schemas-compile
@@ -90,6 +92,10 @@ do
                             CMDLINE="${CMDLINE} -DREF_TRACKING=ON"
                             ;;
         
+        --enable-unity)
+                            CMDLINE="${CMDLINE} -DENABLE_UNITY=ON"
+                            ;;
+        
         --disable-schemas-compile)
                             CMDLINE="${CMDLINE} -DGSETTINGS_COMPILE=OFF"
                             CMDLINE="${CMDLINE} -DGSETTINGS_COMPILE_IN_PLACE=OFF"
diff --git a/debian/rules b/debian/rules
index 5a411ae..3800f34 100755
--- a/debian/rules
+++ b/debian/rules
@@ -13,7 +13,7 @@
        dh $@ --parallel
 
 override_dh_auto_configure:
-       ./configure --prefix=/usr
+       ./configure --prefix=/usr --enable-unity
 
 override_dh_strip:
        dh_strip --dbg-package=geary-dbg
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 54ab64a..d28385b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -579,6 +579,16 @@ else ()
     message(STATUS "Reference tracking: OFF")
 endif ()
 
+if (ENABLE_UNITY)
+    message(STATUS "Unity interface changes: ON")
+    set(EXTRA_VALA_OPTIONS
+        ${EXTRA_VALA_OPTIONS}
+        --define=ENABLE_UNITY
+    )
+else ()
+    message(STATUS "Unity interface changes: OFF")
+endif ()
+
 set(LIB_PATHS ${DEPS_LIBRARY_DIRS})
 link_directories(${LIB_PATHS})
 add_definitions(${CFLAGS})
diff --git a/src/client/components/main-window.vala b/src/client/components/main-window.vala
index 0a013ce..cd50bce 100644
--- a/src/client/components/main-window.vala
+++ b/src/client/components/main-window.vala
@@ -73,12 +73,14 @@ public class MainWindow : Gtk.ApplicationWindow {
         Geary.Engine.instance.account_available.connect(on_account_available);
         Geary.Engine.instance.account_unavailable.connect(on_account_unavailable);
         
-        create_layout();
-        
         // Toolbar.
         main_toolbar = new MainToolbar();
+#if !ENABLE_UNITY
         main_toolbar.show_close_button = true;
         set_titlebar(main_toolbar);
+#endif
+        
+        create_layout();
     }
     
     public override void show_all() {
@@ -171,6 +173,9 @@ public class MainWindow : Gtk.ApplicationWindow {
         folder_paned.pack1(status_bar_box, false, false);
         folder_paned.pack2(conversations_paned, true, false);
         
+#if ENABLE_UNITY
+        main_layout.pack_start(main_toolbar, false, true, 0);
+#endif
         main_layout.pack_end(folder_paned, true, true, 0);
         
         add(main_layout);