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

/*!	\file supersample.cpp

**	\brief Implementation of the "Super Sample" layer

**

**	$Id$

**

**	\legal

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

**	Copyright (c) 2011-2013 Carlos Lรณpez

**

**	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></config.h>

#endif

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

#include "supersample.h"

#endif

using namespace std;

using namespace etl;

using namespace synfig;

using namespace modules;

using namespace lyr_std;

/* === M A C R O S ========================================================= */

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

SYNFIG_LAYER_INIT(SuperSample);

SYNFIG_LAYER_SET_NAME(SuperSample,"super_sample");

SYNFIG_LAYER_SET_LOCAL_NAME(SuperSample,N_("Super Sample"));

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

SYNFIG_LAYER_SET_VERSION(SuperSample,"0.1");

SYNFIG_LAYER_SET_CVS_ID(SuperSample,"$Id$");

/* === P R O C E D U R E S ================================================= */

/* === M E T H O D S ======================================================= */

SuperSample::SuperSample():

param_width(ValueBase(int(2))),

param_height(ValueBase(int(2)))

{

	param_scanline=ValueBase(false);

	param_alpha_aware=ValueBase(true);

	SET_INTERPOLATION_DEFAULTS();

	SET_STATIC_DEFAULTS();

}

bool

SuperSample::set_param(const String & param, const ValueBase &value)

{

	IMPORT_VALUE_PLUS(param_width,

		{

			int width=param_width.get(int());

			if(value.get(int()) < 1) width = 1;

			else width=value.get(int());

			param_width.set(width);

			return true;

		}

		);

	IMPORT_VALUE_PLUS(param_height,

		{

			int height=param_height.get(int());

			if(value.get(int()) < 1) height = 1;

			else height=value.get(int());

			param_height.set(height);

			return true;

		}

		);

	IMPORT_VALUE(param_scanline);

	IMPORT_VALUE(param_alpha_aware);

	return false;

}

ValueBase

SuperSample::get_param(const String& param)const

{

	EXPORT_VALUE(param_width);

	EXPORT_VALUE(param_height);

    EXPORT_VALUE(param_scanline);

    EXPORT_VALUE(param_alpha_aware);

	EXPORT_NAME();

	EXPORT_VERSION();

	return ValueBase();

}

Layer::Vocab

SuperSample::get_param_vocab(void)const

{

	Layer::Vocab ret;

	ret.push_back(ParamDesc("width")

		.set_local_name(_("Width"))

		.set_description(_("Width of sample area (In pixels)"))

	);

	ret.push_back(ParamDesc("height")

		.set_local_name(_("Height"))

		.set_description(_("Height of sample area (In pixels)"))

	);

	ret.push_back(ParamDesc("scanline")

		.set_local_name(_("Use Parametric"))

		.set_description(_("Use the Parametric Renderer"))

	);

	ret.push_back(ParamDesc("alpha_aware")

		.set_local_name(_("Be Alpha Safe"))

		.set_description(_("Avoid alpha artifacts when checked"))

	);

	return ret;

}

Rect

SuperSample::get_bounding_rect(Context context)const

{

	return context.get_full_bounding_rect();

}

rendering::Task::Handle

SuperSample::build_rendering_task_vfunc(Context context)const

{

	int width = param_width.get(int());

	int height = param_height.get(int());

	if (width < 1) width = 1;

	if (height < 1) height = 1;

	rendering::Task::Handle sub_task = context.build_rendering_task();

	if (width == 1 && height == 1)

		return sub_task;

	rendering::TaskTransformationAffine::Handle task_transformation(new rendering::TaskTransformationAffine());

	task_transformation->supersample[0] = width;

	task_transformation->supersample[1] = height;

	task_transformation->sub_task() = sub_task;

	return task_transformation;

}