tweak transport bar spacing

[ardour.git] / libs / pbd / pbd / base_ui.h

diff --git a/libs/pbd/pbd/base_ui.h b/libs/pbd/pbd/base_ui.h
index b4570f87076bfec2d7686056ddcf13f7ba8cb3fd..ccd4878cd9d103b4ab64d3fe90f0093bcb179c76 100644 (file)
--- a/libs/pbd/pbd/base_ui.h
+++ b/libs/pbd/pbd/base_ui.h
@@ -1,3 +1,22 @@
+/*
+    Copyright (C) 2000-2009 Paul Davis 
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
 #ifndef __pbd_base_ui_h__
 #define __pbd_base_ui_h__
 
@@ -7,40 +26,55 @@
 #include <sigc++/slot.h>
 #include <sigc++/trackable.h>
 
-class BaseUI : virtual public sigc::trackable {
+#include <glibmm/thread.h>
+#include <glibmm/main.h>
+
+#include "pbd/crossthread.h"
+#include "pbd/event_loop.h"
+
+class BaseUI : virtual public sigc::trackable, public PBD::EventLoop
+{
   public:
-       BaseUI (std::string name, bool with_signal_pipes);
+       BaseUI (const std::string& name);
        virtual ~BaseUI();
 
        BaseUI* base_instance() { return base_ui_instance; }
 
+       Glib::RefPtr<Glib::MainLoop> main_loop() const { return _main_loop; }
+       Glib::Thread* event_loop_thread() const { return run_loop_thread; }
+       bool caller_is_self () const { return Glib::Thread::self() == run_loop_thread; }
+
        std::string name() const { return _name; }
 
        bool ok() const { return _ok; }
-
-       enum RequestType {
-               range_guarantee = ~0
-       };
-
-       struct BaseRequestObject {
-           RequestType type;
-           sigc::slot<void> the_slot;
-       };
-
+       
        static RequestType new_request_type();
        static RequestType CallSlot;
+       static RequestType Quit;
+
+       void run ();
+       void quit ();
 
   protected:
-       int signal_pipe[2];
+       CrossThreadChannel request_channel;
        bool _ok; 
 
+       Glib::RefPtr<Glib::MainLoop> _main_loop;
+       Glib::Thread*                 run_loop_thread;
+
+       virtual void thread_init () {};
+       bool request_handler (Glib::IOCondition);
+
+       virtual void handle_ui_requests () = 0;
+
   private:
        std::string _name; 
        BaseUI* base_ui_instance;
+       
+       static uint64_t rt_bit;
 
-       static uint32_t rt_bit;
-
-       int setup_signal_pipe ();
+       int setup_request_pipe ();
+       void main_thread ();
 };
 
 #endif /* __pbd_base_ui_h__ */