/* === S Y N F I G ========================================================= */
/*! \file lumakey.cpp
** \brief Implementation of the "Luma Key" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2007 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 "lumakey.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>
#endif
using namespace synfig;
using namespace std;
using namespace etl;
/* === M A C R O S ========================================================= */
/* === G L O B A L S ======================================================= */
SYNFIG_LAYER_INIT(LumaKey);
SYNFIG_LAYER_SET_NAME(LumaKey,"lumakey");
SYNFIG_LAYER_SET_LOCAL_NAME(LumaKey,N_("Luma Key"));
SYNFIG_LAYER_SET_CATEGORY(LumaKey,N_("Filters"));
SYNFIG_LAYER_SET_VERSION(LumaKey,"0.1");
SYNFIG_LAYER_SET_CVS_ID(LumaKey,"$Id$");
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
LumaKey::LumaKey():
Layer_CompositeFork(1.0,Color::BLEND_STRAIGHT)
{
set_blend_method(Color::BLEND_STRAIGHT);
}
bool
LumaKey::set_param(const String ¶m, const ValueBase &value)
{
return Layer_Composite::set_param(param,value);
}
ValueBase
LumaKey::get_param(const String ¶m)const
{
EXPORT_NAME();
EXPORT_VERSION();
return Layer_Composite::get_param(param);
}
Layer::Vocab
LumaKey::get_param_vocab()const
{
Layer::Vocab ret(Layer_Composite::get_param_vocab());
/* ret.push_back(ParamDesc("color")
.set_local_name(_("Color"))
.set_description(_("Color of checkers"))
);
ret.push_back(ParamDesc("pos")
.set_local_name(_("Offset"))
);
ret.push_back(ParamDesc("size")
.set_local_name(_("Size"))
.set_description(_("Size of checkers"))
.set_origin("pos")
);
*/
return ret;
}
synfig::Layer::Handle
LumaKey::hit_check(synfig::Context context, const synfig::Point &getpos)const
{
return context.hit_check(getpos);
}
Color
LumaKey::get_color(Context context, const Point &getpos)const
{
const Color color(context.get_color(getpos));
if(get_amount()==0.0)
return color;
Color ret(color);
ret.set_a(ret.get_y()*ret.get_a());
ret.set_y(1);
if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
return ret;
return Color::blend(ret,color,get_amount(),get_blend_method());
}
bool
LumaKey::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
{
RENDER_TRANSFORMED_IF_NEED(__FILE__, __LINE__)
SuperCallback supercb(cb,0,9500,10000);
if(!context.accelerated_render(surface,quality,renddesc,&supercb))
return false;
int x,y;
Surface::pen pen(surface->begin());
for(y=0;y<renddesc.get_h();y++,pen.inc_y(),pen.dec_x(x))
for(x=0;x<renddesc.get_w();x++,pen.inc_x())
{
Color tmp(pen.get_value());
tmp.set_a(tmp.get_y()*tmp.get_a());
tmp.set_y(1);
pen.put_value(tmp);
}
// Mark our progress as finished
if(cb && !cb->amount_complete(10000,10000))
return false;
return true;
}
////
bool
LumaKey::accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc_, ProgressCallback *cb)const
{
RendDesc renddesc(renddesc_);
// Untransform the render desc
if(!cairo_renddesc_untransform(cr, renddesc))
return false;
const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
const Point tl(renddesc.get_tl());
const int w(renddesc.get_w());
const int h(renddesc.get_h());
SuperCallback supercb(cb,0,9500,10000);
if(get_amount()==0)
return true;
cairo_surface_t *surface;
surface=cairo_surface_create_similar(cairo_get_target(cr), CAIRO_CONTENT_COLOR_ALPHA, w, h);
cairo_t* subcr=cairo_create(surface);
cairo_scale(subcr, 1/pw, 1/ph);
cairo_translate(subcr, -tl[0], -tl[1]);
if(!context.accelerated_cairorender(subcr,quality,renddesc,&supercb))
{
if(cb)cb->error(strprintf(__FILE__"%d: Accelerated Cairo Renderer Failure",__LINE__));
return false;
}
cairo_destroy(subcr);
int x,y;
CairoSurface cairosurface(surface);
if(!cairosurface.map_cairo_image())
{
synfig::info("map cairo image failed");
return false;
}
CairoSurface::pen pen(cairosurface.begin());
for(y=0;y<h;y++,pen.inc_y(),pen.dec_x(x))
for(x=0;x<w;x++,pen.inc_x())
{
Color tmp(Color(pen.get_value().demult_alpha()));
tmp.set_a(tmp.get_y()*tmp.get_a());
tmp.set_y(1);
pen.put_value(CairoColor(tmp.clamped()).premult_alpha());
}
cairosurface.unmap_cairo_image();
// paint surface on cr
cairo_save(cr);
cairo_translate(cr, tl[0], tl[1]);
cairo_scale(cr, pw, ph);
cairo_set_source_surface(cr, surface, 0, 0);
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
cairo_paint(cr);
cairo_restore(cr);
// Mark our progress as finished
if(cb && !cb->amount_complete(10000,10000))
return false;
return true;
}
////
Rect
LumaKey::get_bounding_rect(Context context)const
{
if(is_disabled())
return Rect::zero();
return context.get_full_bounding_rect();
}
rendering::Task::Handle
LumaKey::build_rendering_task_vfunc(Context context) const
{ return Layer::build_rendering_task_vfunc(context); }