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

/*!	\file synfig/rendering/common/task/tasktransformation.h

**	\brief TaskTransformation Header

**

**	$Id$

**

**	\legal

**	......... ... 2015-2018 Ivan Mahonin

**

**	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

*/

/* ========================================================================= */

/* === S T A R T =========================================================== */

#ifndef __SYNFIG_RENDERING_TASKTRANSFORMATION_H

#define __SYNFIG_RENDERING_TASKTRANSFORMATION_H

/* === H E A D E R S ======================================================= */

#include "../../task.h"

#include "../../primitive/transformationaffine.h"

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

/* === T Y P E D E F S ===================================================== */

/* === C L A S S E S & S T R U C T S ======================================= */

namespace synfig

{

namespace rendering

{

//! Interface for tasks which works identically while placed before or after transformation

class TaskInterfaceTransformationPass

{

public:

	virtual ~TaskInterfaceTransformationPass() { }

};

class TaskInterfaceTransformation

{

public:

	virtual ~TaskInterfaceTransformation() { }

	virtual Transformation::Handle get_transformation() const

		{ return Transformation::Handle(); }

};

class TaskTransformation: public Task, public TaskInterfaceTransformation

{

public:

	typedef etl::handle<tasktransformation> Handle;</tasktransformation>

	static Token token;

	virtual Token::Handle get_token() const { return token.handle(); }

	Color::Interpolation interpolation;

	Vector supersample;

	TaskTransformation();

	//! returns true then task just do transformation of first sub-task only

	//! without supersampling and any drawings.

	//! so this task may be fully merged into other suitable transformation task

	virtual bool is_simple() const;

	virtual int get_pass_subtask_index() const;

	const Task::Handle& sub_task() const { return Task::sub_task(0); }

	Task::Handle& sub_task() { return Task::sub_task(0); }

	virtual Rect calc_bounds() const;

	virtual void set_coords_sub_tasks();

};

class TaskTransformationAffine: public TaskTransformation

{

public:

	typedef etl::handle<tasktransformationaffine> Handle;</tasktransformationaffine>

	static Token token;

	virtual Token::Handle get_token() const { return token.handle(); }

	Holder<transformationaffine> transformation;</transformationaffine>

	virtual Transformation::Handle get_transformation() const

		{ return transformation.handle(); }

	virtual int get_pass_subtask_index() const;

};

} /* end namespace rendering */

} /* end namespace synfig */

/* -- E N D ----------------------------------------------------------------- */

#endif