--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libgui/graphics/SliderControl.cc	Thu Feb 20 14:05:45 2014 -0500
@@ -0,0 +1,163 @@
+/*
+
+Copyright (C) 2011 Michael Goffioul.
+
+This file is part of QtHandles.
+
+Foobar 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 3 of the License, or
+(at your option) any later version.
+
+QtHandles 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <QScrollBar>
+
+#include "Container.h"
+#include "SliderControl.h"
+#include "Utils.h"
+
+#define RANGE_INT_MAX 1000000
+
+//////////////////////////////////////////////////////////////////////////////
+
+namespace QtHandles
+{
+
+//////////////////////////////////////////////////////////////////////////////
+
+SliderControl* SliderControl::create (const graphics_object& go)
+{
+  Object* parent = Object::parentObject (go);
+
+  if (parent)
+    {
+      Container* container = parent->innerContainer ();
+
+      if (container)
+	return new SliderControl (go, new QScrollBar (container));
+    }
+
+  return 0;
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+SliderControl::SliderControl (const graphics_object& go,
+			      QAbstractSlider* slider)
+    : BaseControl (go, slider), m_blockUpdates (false)
+{
+  uicontrol::properties& up = properties<uicontrol> ();
+
+  slider->setTracking (false);
+  Matrix bb = up.get_boundingbox ();
+  slider->setOrientation (bb(2) > bb(3) ? Qt::Horizontal : Qt::Vertical);
+  Matrix steps = up.get_sliderstep ().matrix_value ();
+  slider->setMinimum (0);
+  slider->setMaximum (RANGE_INT_MAX);
+  slider->setSingleStep (xround (steps(0) * RANGE_INT_MAX));
+  slider->setPageStep (xround (steps(1) * RANGE_INT_MAX));
+  Matrix value = up.get_value ().matrix_value ();
+  if (value.numel () > 0)
+    {
+      double dmin = up.get_min (), dmax = up.get_max ();
+
+      slider->setValue (xround (((value(0) - dmin) / (dmax - dmin))
+				* RANGE_INT_MAX));
+    }
+
+  connect (slider, SIGNAL (valueChanged (int)), SLOT (valueChanged (int)));
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+SliderControl::~SliderControl (void)
+{
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+void SliderControl::update (int pId)
+{
+  uicontrol::properties& up = properties<uicontrol> ();
+  QScrollBar* slider = qWidget<QScrollBar> ();
+
+  switch (pId)
+    {
+    case uicontrol::properties::ID_SLIDERSTEP:
+	{
+	  Matrix steps = up.get_sliderstep ().matrix_value ();
+
+	  slider->setSingleStep (xround (steps(0) * RANGE_INT_MAX));
+	  slider->setPageStep (xround (steps(1) * RANGE_INT_MAX));
+	}
+      break;
+    case uicontrol::properties::ID_VALUE:
+	{
+	  Matrix value = up.get_value ().matrix_value ();
+	  double dmax = up.get_max (), dmin = up.get_min ();
+
+	  if (value.numel () > 0)
+	    {
+	      int ival = xround (((value(0) - dmin) / (dmax - dmin))
+				 * RANGE_INT_MAX);
+
+	      m_blockUpdates = true;
+	      slider->setValue (ival);
+	      m_blockUpdates = false;
+	    }
+	}
+      break;
+    default:
+      BaseControl::update (pId);
+      break;
+    }
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+void SliderControl::valueChanged (int ival)
+{
+  if (! m_blockUpdates)
+    {
+      gh_manager::auto_lock lock;
+      graphics_object go = object ();
+
+      if (go.valid_object ())
+	{
+	  uicontrol::properties& up = Utils::properties<uicontrol> (go);
+
+	  Matrix value = up.get_value ().matrix_value ();
+	  double dmin = up.get_min (), dmax = up.get_max ();
+
+	  int ival_tmp = (value.numel () > 0 ?
+			  xround (((value(0) - dmin) / (dmax - dmin))
+				  * RANGE_INT_MAX) :
+			  0);
+
+	  if (ival != ival_tmp || value.numel () > 0)
+	    {
+	      double dval = dmin + (ival * (dmax - dmin) / RANGE_INT_MAX);
+
+	      gh_manager::post_set (m_handle, "value", octave_value (dval));
+	      gh_manager::post_callback (m_handle, "callback");
+	    }
+	}
+    }
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+}; // namespace QtHandles