/* === S Y N F I G ========================================================= */

/*!	\file layer_duplicate.cpp

**	\brief Implementation of the "Duplicate" layer

**

**	$Id$

**

**	\legal

**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley

**	Copyright (c) 2007, 2008 Chris Moore

**

**	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></config.h>

#endif

#include "layer_duplicate.h"

#include <synfig general.h=""></synfig>

#include <synfig localization.h=""></synfig>

#include <synfig canvas.h=""></synfig>

#include <synfig context.h=""></synfig>

#include <synfig paramdesc.h=""></synfig>

#include <synfig renddesc.h=""></synfig>

#include <synfig string.h=""></synfig>

#include <synfig surface.h=""></synfig>

#include <synfig time.h=""></synfig>

#include <synfig value.h=""></synfig>

#include <synfig valuenode.h=""></synfig>

#include <synfig common="" rendering="" task="" taskblend.h=""></synfig>

#endif

/* === U S I N G =========================================================== */

using namespace synfig;

using namespace etl;

using namespace std;

/* === G L O B A L S ======================================================= */

SYNFIG_LAYER_INIT(Layer_Duplicate);

SYNFIG_LAYER_SET_NAME(Layer_Duplicate,"duplicate");

SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Duplicate,N_("Duplicate"));

SYNFIG_LAYER_SET_CATEGORY(Layer_Duplicate,N_("Other"));

SYNFIG_LAYER_SET_VERSION(Layer_Duplicate,"0.1");

SYNFIG_LAYER_SET_CVS_ID(Layer_Duplicate,"$Id$");

/* === M E M B E R S ======================================================= */

Layer_Duplicate::Layer_Duplicate():

	Layer_CompositeFork(1.0,Color::BLEND_COMPOSITE)

{

	LinkableValueNode* index_value_node = ValueNode_Duplicate::create(Real(3));

	connect_dynamic_param("index", index_value_node);

	SET_INTERPOLATION_DEFAULTS();

	SET_STATIC_DEFAULTS();

}

Layer::Handle

Layer_Duplicate::clone(Canvas::LooseHandle canvas, const GUID& deriv_guid)const

{

	Layer::Handle ret = (Layer::Handle)Layer_Composite::clone(canvas, deriv_guid);

	const DynamicParamList &dpl = dynamic_param_list();

	DynamicParamList::const_iterator iter = dpl.find("index");

	// if we have a dynamic "index" parameter, make a new one in the clone

	// it's not good to have two references to the same index valuenode,

	// or nested duplications cause an infinite loop

	if (iter != dpl.end())

		ret->connect_dynamic_param(iter->first,iter->second->clone(canvas, deriv_guid));

	return ret;

}

bool

Layer_Duplicate::set_param(const String ¶m, const ValueBase &value)

{

	IMPORT_VALUE(param_index);

	return Layer_Composite::set_param(param,value);

}

ValueBase

Layer_Duplicate::get_param(const String ¶m)const

{

 	EXPORT_VALUE(param_index);

	EXPORT_NAME();

	EXPORT_VERSION();

	return Layer_Composite::get_param(param);

}

Color

Layer_Duplicate::get_color(Context context, const Point &pos)const

{

	handle<valuenode_duplicate> duplicate_param = get_duplicate_param();</valuenode_duplicate>

	if (!duplicate_param) return context.get_color(pos);

	Color::BlendMethod blend_method(get_blend_method());

	float amount(get_amount());

	Color color;

	std::lock_guard<std::mutex> lock(mutex);</std::mutex>

	Time time_cur = get_time_mark();

	duplicate_param->reset_index(time_cur);

	do

	{

		context.set_time(time_cur+1);

		context.set_time(time_cur);

		color = Color::blend(context.get_color(pos),color,amount,blend_method);

	} while (duplicate_param->step(time_cur));

	return color;

}

Layer::Vocab

Layer_Duplicate::get_param_vocab()const

{

	Layer::Vocab ret;

	ret=Layer_Composite::get_param_vocab();

	ret.push_back(ParamDesc("index")

		.set_local_name(_("Index"))

		.set_description(_("Copy Index"))

	);

	return ret;

}

ValueNode_Duplicate::Handle

Layer_Duplicate::get_duplicate_param()const

{

	const DynamicParamList &dpl = dynamic_param_list();

	DynamicParamList::const_iterator iter = dpl.find("index");

	if (iter == dpl.end()) return NULL;

	etl::rhandle<valuenode> param(iter->second);</valuenode>

	return ValueNode_Duplicate::Handle::cast_dynamic(param);

}

rendering::Task::Handle

Layer_Duplicate::build_rendering_task_vfunc(Context context) const

{

	handle<valuenode_duplicate> duplicate_param = get_duplicate_param();</valuenode_duplicate>

	if (!duplicate_param)

		return context.build_rendering_task();

	Time time_cur = get_time_mark();

	ColorReal amount = get_amount() * Context::z_depth_visibility(context.get_params(), *this);

	Color::BlendMethod blend_method = get_blend_method();

	rendering::Task::Handle task;

	std::lock_guard<std::mutex> lock(mutex);</std::mutex>

	duplicate_param->reset_index(time_cur);

	do

	{

		context.set_time(time_cur, true);

		rendering::TaskBlend::Handle task_blend(new rendering::TaskBlend());

		task_blend->amount = amount;

		task_blend->blend_method = blend_method;

		task_blend->sub_task_a() = task;

		task_blend->sub_task_b() = context.build_rendering_task();

		task = task_blend;

	}

	while (duplicate_param->step(time_cur));

	return task;

}