Remove ancient trunk folder from svn repository

[synfig.git] / synfig-studio / src / gtkmm / adjust_window.cpp

diff --git a/synfig-studio/src/gtkmm/adjust_window.cpp b/synfig-studio/src/gtkmm/adjust_window.cpp
new file mode 100644 (file)
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+++ b/synfig-studio/src/gtkmm/adjust_window.cpp
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+/* === S Y N F I G ========================================================= */
+/*!    \file adjust_window.cpp
+**     \brief Adjustment Window Implementation File
+**
+**     $Id$
+**
+**     \legal
+**     Copyright (c) 2004 Adrian Bentley
+**
+**     This package 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 package 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.
+**     \endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+#      include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+#      include <config.h>
+#endif
+
+#include "adjust_window.h"
+#include "app.h"
+
+#include "general.h"
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace std;
+//using namespace etl;
+//using namespace synfig;
+
+using studio::Adjust_Window;
+
+/* === M A C R O S ========================================================= */
+const double EPSILON = 1.0e-6;
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+/* === E N T R Y P O I N T ================================================= */
+
+Adjust_Window::Adjust_Window(double value, double lower, double upper,
+                                                       double stepinc, double pageinc, double pagesize,
+                                                       Gtk::Adjustment *adj)
+: Adjustment(value,lower,upper,stepinc,pageinc,pagesize),
+       adj_child(0)
+{
+       if(adj) set_child_adjustment(adj);
+}
+
+Adjust_Window::~Adjust_Window()
+{
+       //connections should automatically be killed etc.
+}
+
+//child interface functions
+Gtk::Adjustment *Adjust_Window::get_child_adjustment()
+{
+       return adj_child;
+}
+
+const Gtk::Adjustment *Adjust_Window::get_child_adjustment() const
+{
+       return adj_child;
+}
+
+void Adjust_Window::set_child_adjustment(Gtk::Adjustment *child)
+{
+       childchanged.disconnect();
+
+       adj_child = child;
+
+       // synfig::info("Adjust: connecting to child signals");
+
+       if(child)
+       {
+               childchanged = child->signal_changed().connect(sigc::mem_fun(*this,&Adjust_Window::update_fromchild));
+
+               update_child();
+       }
+}
+
+void Adjust_Window::on_changed()
+{
+       update_child();
+}
+
+void Adjust_Window::on_value_changed()
+{
+       update_child();
+}
+
+//SUB TIME FUNCTIONS
+double Adjust_Window::get_sub_lower() const
+{
+       return get_value();
+}
+
+double Adjust_Window::get_sub_upper() const
+{
+       return get_value() + get_page_size();
+}
+
+//---- REFRESH FUNCTIONS -----
+void Adjust_Window::update_child()
+{
+       if(adj_child)
+       {
+               bool childchanged = false;
+
+               double v = get_value();
+               double ve = v + get_page_size();
+
+               //reset child's values if they need to be...
+               if(abs(v - adj_child->get_lower()) > EPSILON)
+               {
+                       adj_child->set_lower(v);
+                       childchanged = true;
+               }
+
+               if(abs(ve - adj_child->get_upper()) > EPSILON)
+               {
+                       adj_child->set_upper(ve);
+                       childchanged = true;
+               }
+
+               if(childchanged)
+               {
+                       adj_child->changed();
+               }
+       }
+}
+
+void Adjust_Window::update_fromchild()
+{
+       if(adj_child)
+       {
+               double b = adj_child->get_lower();
+               double dist = adj_child->get_upper() - b;
+
+               //reset our values if they need to be...
+               if(abs(get_value() - b) > EPSILON)
+               {
+                       set_value(b);
+                       value_changed();
+               }
+
+               if(abs(get_page_size() - dist) > EPSILON)
+               {
+                       set_page_size(dist);
+                       changed();
+               }
+       }
+}