1 /* === S Y N F I G ========================================================= */
2 /*! \file checkerboard.cpp
3 ** \brief Implementation of the "Checkerboard" layer
8 ** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
9 ** Copyright (c) 2007, 2008 Chris Moore
11 ** This package is free software; you can redistribute it and/or
12 ** modify it under the terms of the GNU General Public License as
13 ** published by the Free Software Foundation; either version 2 of
14 ** the License, or (at your option) any later version.
16 ** This package is distributed in the hope that it will be useful,
17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 ** General Public License for more details.
22 /* ========================================================================= */
24 /* === H E A D E R S ======================================================= */
33 #include "checkerboard.h"
35 #include <synfig/string.h>
36 #include <synfig/time.h>
37 #include <synfig/context.h>
38 #include <synfig/paramdesc.h>
39 #include <synfig/renddesc.h>
40 #include <synfig/surface.h>
41 #include <synfig/value.h>
42 #include <synfig/valuenode.h>
43 #include <synfig/segment.h>
47 using namespace synfig;
51 /* === M A C R O S ========================================================= */
53 /* === G L O B A L S ======================================================= */
55 SYNFIG_LAYER_INIT(CheckerBoard);
56 SYNFIG_LAYER_SET_NAME(CheckerBoard,"checker_board");
57 SYNFIG_LAYER_SET_LOCAL_NAME(CheckerBoard,N_("Checkerboard"));
58 SYNFIG_LAYER_SET_CATEGORY(CheckerBoard,N_("Geometry"));
59 SYNFIG_LAYER_SET_VERSION(CheckerBoard,"0.1");
60 SYNFIG_LAYER_SET_CVS_ID(CheckerBoard,"$Id$");
62 /* === P R O C E D U R E S ================================================= */
64 /* === M E T H O D S ======================================================= */
66 CheckerBoard::CheckerBoard():
67 Layer_Composite (1.0,Color::BLEND_COMPOSITE),
68 color (Color::black()),
69 origin (Point(0.125,0.125)),
70 size (Point(0.25,0.25))
74 CheckerBoard::point_test(const synfig::Point& getpos)const
76 int val=((int)((getpos[0]-origin[0])/size[0])+(int)((getpos[1]-origin[1])/size[1]));
77 if(getpos[0]-origin[0] < 0.0)
79 if(getpos[1]-origin[1] < 0.0)
85 CheckerBoard::set_param(const String ¶m, const ValueBase &value)
87 IMPORT_PLUS(color, { if (color.get_a() == 0) { if (converted_blend_) {
88 set_blend_method(Color::BLEND_ALPHA_OVER);
89 color.set_a(1); } else transparent_color_ = true; } });
93 IMPORT_AS(origin,"pos");
94 IMPORT_AS(origin[0],"pos[0]");
95 IMPORT_AS(origin[1],"pos[1]");
97 return Layer_Composite::set_param(param,value);
101 CheckerBoard::get_param(const String ¶m)const
109 return Layer_Composite::get_param(param);
113 CheckerBoard::get_param_vocab()const
115 Layer::Vocab ret(Layer_Composite::get_param_vocab());
117 ret.push_back(ParamDesc("color")
118 .set_local_name(_("Color"))
119 .set_description(_("Color of checkers"))
121 ret.push_back(ParamDesc("origin")
122 .set_local_name(_("Origin"))
124 ret.push_back(ParamDesc("size")
125 .set_local_name(_("Size"))
126 .set_description(_("Size of checkers"))
127 .set_origin("origin")
133 synfig::Layer::Handle
134 CheckerBoard::hit_check(synfig::Context context, const synfig::Point &getpos)const
136 if(get_amount()!=0.0 && point_test(getpos))
138 synfig::Layer::Handle tmp;
139 if(get_blend_method()==Color::BLEND_BEHIND && (tmp=context.hit_check(getpos)))
141 if(Color::is_onto(get_blend_method()) && !(tmp=context.hit_check(getpos)))
143 return const_cast<CheckerBoard*>(this);
146 return context.hit_check(getpos);
150 CheckerBoard::get_color(Context context, const Point &getpos)const
152 if(get_amount()!=0.0 && point_test(getpos))
154 if(get_amount()==1.0 && get_blend_method()==Color::BLEND_STRAIGHT)
157 return Color::blend(color,context.get_color(getpos),get_amount(),get_blend_method());
160 return Color::blend(Color::alpha(),context.get_color(getpos),get_amount(),get_blend_method());
164 CheckerBoard::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
166 SuperCallback supercb(cb,0,9500,10000);
168 if(!context.accelerated_render(surface,quality,renddesc,&supercb))
175 const Point tl(renddesc.get_tl());
177 const int w(surface->get_w());
178 const int h(surface->get_h());
179 const Real pw(renddesc.get_pw()),ph(renddesc.get_ph());
181 Surface::alpha_pen apen(surface->begin());
183 apen.set_alpha(get_amount());
184 apen.set_blend_method(get_blend_method());
185 apen.set_value(color);
187 for(y=0,pos[1]=tl[1];y<h;y++,apen.inc_y(),apen.dec_x(x),pos[1]+=ph)
188 for(x=0,pos[0]=tl[0];x<w;x++,apen.inc_x(),pos[0]+=pw)
192 // Mark our progress as finished
193 if(cb && !cb->amount_complete(10000,10000))