1 files changed, 81 insertions, 0 deletions
diff --git a/src/libs/gui/BreadCrumb.h b/src/libs/gui/BreadCrumb.h
new file mode 100644
index 00000000..96464b50
--- /dev/null
+++ b/src/libs/gui/BreadCrumb.h
@@ -0,0 +1,81 @@
+/* This file is part of Ingen.
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ * 
+ * Ingen 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.
+ * 
+ * Ingen 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 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.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef BREADCRUMB_H
+#define BREADCRUMB_H
+
+#include <gtkmm.h>
+#include <raul/Path.h>
+#include <raul/SharedPtr.h>
+#include "PatchView.h"
+
+namespace Ingen {
+namespace GUI {
+
+
+/** Breadcrumb button in a PatchWindow.
+ *
+ * Each Breadcrumb stores a reference to a PatchView for quick switching.
+ * So, the amount of allocated PatchViews at a given time is equal to the
+ * number of visible breadcrumbs (which is the perfect cache for GUI
+ * responsiveness balanced with mem consumption).
+ *
+ * \ingroup GUI
+ */
+class BreadCrumb : public Gtk::ToggleButton
+{
+public:
+	BreadCrumb(const Path& path, SharedPtr<PatchView> view = SharedPtr<PatchView>())
+		: _path(path)
+		, _view(view)
+	{
+		assert( !view || view->patch()->path() == path);
+		set_border_width(0);
+		set_path(path);
+		show_all();
+	}
+
+	void set_view(SharedPtr<PatchView> view) {
+		assert( !view || view->patch()->path() == _path);
+		_view = view;
+	}
+
+	const Path&           path() const { return _path; }
+	SharedPtr<PatchView> view() const { return _view; }
+	
+	void set_path(const Path& path)
+	{
+		remove();
+		const string text = (path == "/") ? "/" : path.name();
+		Gtk::Label* lab = manage(new Gtk::Label(text));
+		lab->set_padding(0, 0);
+		lab->show();
+		add(*lab);
+
+		if (_view && _view->patch()->path() != path)
+			_view.reset();
+	}
+
+private:
+	Path                 _path;
+	SharedPtr<PatchView> _view;
+};
+
+} // namespace GUI
+} // namespace Ingen
+
+#endif // BREADCRUMB_H