/* === S Y N F I G ========================================================= */
/*! \file synfig/rendering/common/task/taskblend.h
** \brief TaskBlend 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_TASKBLEND_H
#define __SYNFIG_RENDERING_TASKBLEND_H
/* === H E A D E R S ======================================================= */
#include "../../task.h"
#include "tasktransformation.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
{
class TaskInterfaceComposite
{
public:
bool blend;
Color::BlendMethod blend_method;
Color::value_type amount;
TaskInterfaceComposite():
blend(),
blend_method(Color::BLEND_COMPOSITE),
amount() { }
virtual ~TaskInterfaceComposite()
{ }
virtual Color::BlendMethodFlags get_supported_blend_methods() const
{ return 0; }
bool is_blend_method_supported(Color::BlendMethod blend_method)
{ return get_supported_blend_methods() & (1 << blend_method); }
};
class TaskBlend: public Task,
public TaskInterfaceTransformationPass,
public TaskInterfaceSplit
{
public:
typedef etl::handle<TaskBlend> Handle;
static Token token;
virtual Token::Handle get_token() const { return token.handle(); }
Color::BlendMethod blend_method;
Color::value_type amount;
TaskBlend():
blend_method(Color::BLEND_COMPOSITE), amount(1.0) { }
const Task::Handle& sub_task_a() const { return sub_task(0); }
Task::Handle& sub_task_a() { return sub_task(0); }
const Task::Handle& sub_task_b() const { return sub_task(1); }
Task::Handle& sub_task_b() { return sub_task(1); }
VectorInt get_offset_a() const;
VectorInt get_offset_b() const;
virtual Rect calc_bounds() const;
};
} /* end namespace rendering */
} /* end namespace synfig */
/* -- E N D ----------------------------------------------------------------- */
#endif