/* === S Y N F I G ========================================================= */
/*! \file shade.cpp
** \brief Implementation of the "Shade" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2008 Chris Moore
** Copyright (c) 2012-2013 Carlos López
**
** 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>
#endif
#include <cstring>
#include <ETL/misc>
#include "shade.h"
#include <synfig/localization.h>
#include <synfig/general.h>
#include <synfig/string.h>
#include <synfig/time.h>
#include <synfig/context.h>
#include <synfig/paramdesc.h>
#include <synfig/renddesc.h>
#include <synfig/surface.h>
#include <synfig/value.h>
#include <synfig/valuenode.h>
#include <synfig/segment.h>
#include <synfig/cairo_renddesc.h>
#include <synfig/rendering/primitive/transformationaffine.h>
#include <synfig/rendering/common/task/taskblur.h>
#include <synfig/rendering/common/task/tasktransformation.h>
#include <synfig/rendering/common/task/taskpixelprocessor.h>
#endif
using namespace std;
using namespace etl;
using namespace synfig;
using namespace modules;
using namespace lyr_std;
/*#define TYPE_BOX 0
#define TYPE_FASTGUASSIAN 1
#define TYPE_CROSS 2
#define TYPE_GAUSSIAN 3
#define TYPE_DISC 4
*/
/* -- G L O B A L S --------------------------------------------------------- */
SYNFIG_LAYER_INIT(Layer_Shade);
SYNFIG_LAYER_SET_NAME(Layer_Shade,"shade");
SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Shade,N_("Shade"));
SYNFIG_LAYER_SET_CATEGORY(Layer_Shade,N_("Stylize"));
SYNFIG_LAYER_SET_VERSION(Layer_Shade,"0.2");
SYNFIG_LAYER_SET_CVS_ID(Layer_Shade,"$Id$");
/* -- F U N C T I O N S ----------------------------------------------------- */
static inline void clamp_size(Vector &v)
{
if(v[0]<0.0)v[0]=0.0;
if(v[1]<0.0)v[1]=0.0;
}
Layer_Shade::Layer_Shade():
Layer_CompositeFork(0.75,Color::BLEND_BEHIND),
param_size(ValueBase(Vector(0.1,0.1))),
param_type(ValueBase(int(Blur::FASTGAUSSIAN))),
param_color(ValueBase(Color::black())),
param_origin(ValueBase(Vector(0.2,-0.2))),
param_invert(ValueBase(false))
{
SET_INTERPOLATION_DEFAULTS();
SET_STATIC_DEFAULTS();
}
bool
Layer_Shade::set_param(const String ¶m, const ValueBase &value)
{
IMPORT_VALUE_PLUS(param_size,
{
Vector size=param_size.get(Vector());
clamp_size(size);
param_size.set(size);
}
);
IMPORT_VALUE(param_type);
IMPORT_VALUE_PLUS(param_color,
{
Color color=param_color.get(Color());
if (color.get_a() == 0)
{
if (converted_blend_)
{
set_blend_method(Color::BLEND_ALPHA_OVER);
color.set_a(1);
param_color.set(color);
}
else
transparent_color_ = true;
}
}
);
IMPORT_VALUE(param_origin);
IMPORT_VALUE(param_invert);
if(param=="offset")
return set_param("origin", value);
return Layer_Composite::set_param(param,value);
}
ValueBase
Layer_Shade::get_param(const String ¶m)const
{
EXPORT_VALUE(param_size);
EXPORT_VALUE(param_type);
EXPORT_VALUE(param_color);
EXPORT_VALUE(param_origin);
EXPORT_VALUE(param_invert);
EXPORT_NAME();
EXPORT_VERSION();
return Layer_Composite::get_param(param);
}
Color
Layer_Shade::get_color(Context context, const Point &pos)const
{
Vector size=param_size.get(Vector());
int type=param_type.get(int());
Color color=param_color.get(Color());
Vector origin=param_origin.get(Vector());
bool invert=param_invert.get(bool());
Point blurpos = Blur(size,type)(pos);
if(get_amount()==0.0)
return context.get_color(pos);
Color shade(color);
if(!invert)
shade.set_a(context.get_color(blurpos-origin).get_a());
else
shade.set_a(1.0f-context.get_color(blurpos-origin).get_a());
return Color::blend(shade,context.get_color(pos),get_amount(),get_blend_method());
}
Layer::Vocab
Layer_Shade::get_param_vocab(void)const
{
Layer::Vocab ret(Layer_Composite::get_param_vocab());
ret.push_back(ParamDesc("color")
.set_local_name(_("Color"))
);
ret.push_back(ParamDesc("origin")
.set_local_name(_("Origin"))
);
ret.push_back(ParamDesc("size")
.set_local_name(_("Size"))
.set_description(_("Size of Shade"))
.set_is_distance()
.set_origin("origin")
);
ret.push_back(ParamDesc("type")
.set_local_name(_("Type"))
.set_description(_("Type of blur to use"))
.set_hint("enum")
.add_enum_value(Blur::BOX,"box",_("Box Blur"))
.add_enum_value(Blur::FASTGAUSSIAN,"fastgaussian",_("Fast Gaussian Blur"))
.add_enum_value(Blur::CROSS,"cross",_("Cross-Hatch Blur"))
.add_enum_value(Blur::GAUSSIAN,"gaussian",_("Gaussian Blur"))
.add_enum_value(Blur::DISC,"disc",_("Disc Blur"))
);
ret.push_back(ParamDesc("invert")
.set_local_name(_("Invert"))
);
return ret;
}
Rect
Layer_Shade::get_full_bounding_rect(Context context)const
{
Vector size=param_size.get(Vector());
Vector origin=param_origin.get(Vector());
bool invert=param_invert.get(bool());
if(is_disabled())
return context.get_full_bounding_rect();
if(invert)
return Rect::full_plane();
Rect under(context.get_full_bounding_rect());
if(Color::is_onto(get_blend_method()))
return under;
Rect bounds((under+origin).expand_x(size[0]).expand_y(size[1]));
if(is_solid_color())
return bounds;
return bounds|under;
}
rendering::Task::Handle
Layer_Shade::build_composite_fork_task_vfunc(ContextParams /* context_params */, rendering::Task::Handle sub_task)const
{
Vector size = param_size.get(Vector());
rendering::Blur::Type type = (rendering::Blur::Type)param_type.get(int());
Color color = param_color.get(Color());
Vector origin = param_origin.get(Vector());
bool invert = param_invert.get(bool());
rendering::TaskBlur::Handle task_blur(new rendering::TaskBlur());
task_blur->blur.size = size;
task_blur->blur.type = type;
task_blur->sub_task() = sub_task->clone_recursive();
ColorMatrix matrix;
matrix *= ColorMatrix().set_replace_color(color);
if (invert)
matrix *= ColorMatrix().set_invert_alpha();
rendering::TaskPixelColorMatrix::Handle task_colormatrix(new rendering::TaskPixelColorMatrix());
task_colormatrix->matrix = matrix;
task_colormatrix->sub_task() = task_blur;
rendering::TaskTransformationAffine::Handle task_transformation(new rendering::TaskTransformationAffine());
task_transformation->transformation->matrix.set_translate(origin);
task_transformation->sub_task() = task_colormatrix;
return task_transformation;
}