New Stroboscope layer. Patch from Ray Frederikson

[synfig.git] / synfig-core / src / modules / lyr_std / stroboscope.cpp

diff --git a/synfig-core/src/modules/lyr_std/stroboscope.cpp b/synfig-core/src/modules/lyr_std/stroboscope.cpp
new file mode 100644 (file)
index 0000000..5fa7fde
--- /dev/null
+++ b/synfig-core/src/modules/lyr_std/stroboscope.cpp
@@ -0,0 +1,133 @@
+/* === S Y N F I G ========================================================= */
+/*!    \file stroboscope.cpp
+**     \brief Implementation of the "Stroboscope" layer
+**
+**     $Id$
+**
+**     \legal
+**     Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**     Copyright (c) 2007, 2008 Chris Moore
+**     Copyright (c) 2009 Ray Frederikson
+**
+**     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
+**
+** === N O T E S ===========================================================
+**
+** ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+#      include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+#      include <config.h>
+#endif
+
+#include "stroboscope.h"
+#include <synfig/valuenode.h>
+#include <synfig/valuenode_const.h>
+#include <synfig/valuenode_subtract.h>
+#include <synfig/time.h>
+#include <synfig/context.h>
+#include <synfig/paramdesc.h>
+#include <synfig/renddesc.h>
+#include <synfig/value.h>
+#include <synfig/canvas.h>
+
+#endif
+
+using namespace synfig;
+using namespace std;
+using namespace etl;
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+SYNFIG_LAYER_INIT(Layer_Stroboscope);
+SYNFIG_LAYER_SET_NAME(Layer_Stroboscope,"stroboscope");
+SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Stroboscope,N_("Stroboscope"));
+SYNFIG_LAYER_SET_CATEGORY(Layer_Stroboscope,N_("Other"));
+SYNFIG_LAYER_SET_VERSION(Layer_Stroboscope,"0.1");
+SYNFIG_LAYER_SET_CVS_ID(Layer_Stroboscope,"$Id$");
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+Layer_Stroboscope::Layer_Stroboscope()
+{
+       ratio=2;
+}
+
+Layer_Stroboscope::~Layer_Stroboscope()
+{
+}
+
+bool
+Layer_Stroboscope::set_param(const String & param, const ValueBase &value)
+{
+       IMPORT(ratio);
+
+       return Layer::set_param(param,value);
+}
+
+ValueBase
+Layer_Stroboscope::get_param(const String & param)const
+{
+       EXPORT(ratio);
+       EXPORT_NAME();
+       EXPORT_VERSION();
+
+       return Layer::get_param(param);
+}
+
+Layer::Vocab
+Layer_Stroboscope::get_param_vocab()const
+{
+       Layer::Vocab ret(Layer::get_param_vocab());
+
+       ret.push_back(ParamDesc("ratio")
+               .set_local_name(_("Ratio"))
+       );
+
+       return ret;
+}
+
+void
+Layer_Stroboscope::set_time(Context context, Time t)const
+{
+       if (ratio != 0)
+       {
+               float fps = 24.0;
+               Canvas::LooseHandle canvas(get_canvas());
+               if(canvas)
+                       fps = canvas->rend_desc().get_frame_rate(); //not works :(
+               float frame = floor((t*fps)/ratio)*ratio;
+               t = Time(1)*(frame/fps);
+       }
+
+       context.set_time(t);
+}
+
+Color
+Layer_Stroboscope::get_color(Context context, const Point &pos)const
+{
+       return context.get_color(pos);
+}
+
+bool
+Layer_Stroboscope::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
+{
+       return context.accelerated_render(surface,quality,renddesc,cb);
+}