synfig-core/trunk/src/synfig/layer_duplicate.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file layer_duplicate.cpp
   3 **      \brief Implementation of the "Duplicate" layer
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007, 2008 Chris Moore
  10 **
  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.
  15 **
  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.
  20 **      \endlegal
  21 */
  22 /* ========================================================================= */
  23
  24 /* === H E A D E R S ======================================================= */
  25
  26 #ifdef USING_PCH
  27 #       include "pch.h"
  28 #else
  29 #ifdef HAVE_CONFIG_H
  30 #       include <config.h>
  31 #endif
  32
  33 #include "string.h"
  34 #include "layer_duplicate.h"
  35 #include "time.h"
  36 #include "context.h"
  37 #include "paramdesc.h"
  38 #include "renddesc.h"
  39 #include "surface.h"
  40 #include "value.h"
  41 #include "valuenode.h"
  42 #include "canvas.h"
  43
  44 #endif
  45
  46 /* === U S I N G =========================================================== */
  47
  48 using namespace synfig;
  49 using namespace etl;
  50 using namespace std;
  51
  52 /* === G L O B A L S ======================================================= */
  53
  54 SYNFIG_LAYER_INIT(Layer_Duplicate);
  55 SYNFIG_LAYER_SET_NAME(Layer_Duplicate,"duplicate");
  56 SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Duplicate,N_("Duplicate"));
  57 SYNFIG_LAYER_SET_CATEGORY(Layer_Duplicate,N_("Other"));
  58 SYNFIG_LAYER_SET_VERSION(Layer_Duplicate,"0.1");
  59 SYNFIG_LAYER_SET_CVS_ID(Layer_Duplicate,"$Id$");
  60
  61 /* === M E M B E R S ======================================================= */
  62
  63 Layer_Duplicate::Layer_Duplicate():
  64         Layer_Composite(1.0,Color::BLEND_COMPOSITE)
  65 {
  66         LinkableValueNode* index_value_node = ValueNode_Duplicate::create(Real(3));
  67         connect_dynamic_param("index", index_value_node);
  68 }
  69
  70 Layer::Handle
  71 Layer_Duplicate::clone(const GUID& deriv_guid)const
  72 {
  73         Layer::Handle ret = (Layer::Handle)Layer_Composite::clone(deriv_guid);
  74
  75         const DynamicParamList &dpl = dynamic_param_list();
  76         DynamicParamList::const_iterator iter = dpl.find("index");
  77
  78         // if we have a dynamic "index" parameter, make a new one in the clone
  79         // it's not good to have two references to the same index valuenode,
  80         // or nested duplications cause an infinite loop
  81         if (iter != dpl.end())
  82                 ret->connect_dynamic_param(iter->first,iter->second->clone(deriv_guid));
  83
  84         return ret;
  85 }
  86
  87 bool
  88 Layer_Duplicate::set_param(const String &param, const ValueBase &value)
  89 {
  90         IMPORT(index);
  91         return Layer_Composite::set_param(param,value);
  92 }
  93
  94 ValueBase
  95 Layer_Duplicate::get_param(const String &param)const
  96 {
  97         EXPORT(index);
  98
  99         EXPORT_NAME();
 100         EXPORT_VERSION();
 101
 102         return Layer_Composite::get_param(param);
 103 }
 104
 105 void
 106 Layer_Duplicate::set_time(Context context, Time time)const
 107 {
 108         context.set_time(time);
 109         time_cur=time;
 110 }
 111
 112 void
 113 Layer_Duplicate::set_time(Context context, Time time, const Point &pos)const
 114 {
 115         context.set_time(time,pos);
 116         time_cur=time;
 117 }
 118
 119 Color
 120 Layer_Duplicate::get_color(Context context, const Point &pos)const
 121 {
 122         return context.get_color(pos);
 123 }
 124
 125 Layer::Vocab
 126 Layer_Duplicate::get_param_vocab()const
 127 {
 128         Layer::Vocab ret;
 129         ret=Layer_Composite::get_param_vocab();
 130
 131         ret.push_back(ParamDesc("index")
 132                 .set_local_name(_("Index"))
 133                 .set_description(_("Copy Index"))
 134         );
 135
 136         return ret;
 137 }
 138
 139 ValueNode_Duplicate::Handle
 140 Layer_Duplicate::get_duplicate_param()const
 141 {
 142         const DynamicParamList &dpl = dynamic_param_list();
 143         DynamicParamList::const_iterator iter = dpl.find("index");
 144         if (iter == dpl.end()) return NULL;
 145         etl::rhandle<ValueNode> param(iter->second);
 146         return ValueNode_Duplicate::Handle::cast_dynamic(param);
 147 }
 148
 149 bool
 150 Layer_Duplicate::accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const
 151 {
 152         if(quality == 10)
 153                 return context.accelerated_render(surface,quality,renddesc,cb);
 154
 155         if(context->empty())
 156         {
 157                 surface->set_wh(renddesc.get_w(),renddesc.get_h());
 158                 surface->clear();
 159                 return true;
 160         }
 161
 162         SuperCallback subimagecb;
 163         Surface tmp;
 164         int i = 0;
 165
 166         handle<ValueNode_Duplicate> duplicate_param = get_duplicate_param();
 167         if (!duplicate_param) return context.accelerated_render(surface,quality,renddesc,cb);
 168
 169         surface->set_wh(renddesc.get_w(),renddesc.get_h());
 170         surface->clear();
 171
 172         Color::BlendMethod blend_method(get_blend_method());
 173         int steps = duplicate_param->count_steps(time_cur);
 174
 175         Mutex::Lock lock(mutex);
 176         duplicate_param->reset_index(time_cur);
 177         do
 178         {
 179                 subimagecb=SuperCallback(cb,i*(5000/steps),(i+1)*(5000/steps),5000);
 180                 // \todo can we force a re-evaluation of all the variables without changing the time twice?
 181                 context.set_time(time_cur+1);
 182                 context.set_time(time_cur);
 183                 if(!context.accelerated_render(&tmp,quality,renddesc,&subimagecb)) return false;
 184
 185                 Surface::alpha_pen apen(surface->begin());
 186                 apen.set_alpha(get_amount());
 187                 // \todo have a checkbox allowing use of 'behind' to reverse the order?
 188                 apen.set_blend_method(i ? blend_method : Color::BLEND_COMPOSITE);
 189                 tmp.blit_to(apen);
 190                 i++;
 191         } while (duplicate_param->step(time_cur));
 192
 193         return true;
 194 }