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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file value.cpp
   3 **      \brief Template Header
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **      Copyright (c) 2007 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 "value.h"
  34 #include "general.h"
  35 #include <ETL/stringf>
  36 #include "canvas.h"
  37 #include "gradient.h"
  38
  39
  40
  41 #include "vector.h"
  42 #include "time.h"
  43 #include "segment.h"
  44 #include "color.h"
  45
  46 #endif
  47
  48 using namespace synfig;
  49 using namespace std;
  50 using namespace etl;
  51
  52 /* === M A C R O S ========================================================= */
  53
  54 /* === G L O B A L S ======================================================= */
  55
  56 /* === P R O C E D U R E S ================================================= */
  57
  58 /* === M E T H O D S ======================================================= */
  59
  60 ValueBase::ValueBase():type(TYPE_NIL),data(0),ref_count(0),loop_(0)
  61 {
  62 }
  63
  64 ValueBase::ValueBase(Type x):
  65         type(x),
  66         data(0),
  67         loop_(0)
  68 {
  69         switch(type)
  70         {
  71         case TYPE_BOOL:                 data=static_cast<void*>(new bool());                            break;
  72         case TYPE_INTEGER:              data=static_cast<void*>(new int());                                     break;
  73         case TYPE_ANGLE:                data=static_cast<void*>(new Angle());                           break;
  74         case TYPE_VECTOR:               data=static_cast<void*>(new Vector());                          break;
  75         case TYPE_TIME:                 data=static_cast<void*>(new Time());                            break;
  76         case TYPE_REAL:                 data=static_cast<void*>(new Real());                            break;
  77         case TYPE_COLOR:                data=static_cast<void*>(new Color());                           break;
  78         case TYPE_SEGMENT:              data=static_cast<void*>(new Segment());                         break;
  79         case TYPE_BLINEPOINT:   data=static_cast<void*>(new BLinePoint());                      break;
  80         case TYPE_LIST:                 data=static_cast<void*>(new list_type());                       break;
  81         case TYPE_STRING:               data=static_cast<void*>(new String());                          break;
  82         case TYPE_GRADIENT:             data=static_cast<void*>(new Gradient());                        break;
  83         case TYPE_CANVAS:               data=static_cast<void*>(new etl::handle<Canvas>());     break;
  84         default:                                                                                                                                        break;
  85         }
  86 }
  87
  88 ValueBase::~ValueBase()
  89 {
  90         clear();
  91 }
  92
  93 const char*
  94 ValueBase::get(const char*)const
  95 {
  96         return get(String()).c_str();
  97 }
  98
  99 void
 100 ValueBase::set(Canvas* x)
 101 {
 102         clear();
 103         if(x && x->is_inline())
 104         {
 105                 _set(etl::handle<Canvas>(x));
 106         }
 107         else
 108         {
 109                 _set(etl::loose_handle<Canvas>(x));
 110         }
 111         assert(get(x)==x);
 112 }
 113
 114 void
 115 ValueBase::set(etl::loose_handle<Canvas> x)
 116 {
 117         clear();
 118         if(x && x->is_inline())
 119                 _set(etl::handle<Canvas>(x));
 120         else
 121                 _set(etl::loose_handle<Canvas>(x));
 122         assert(get(x)==x);
 123 }
 124
 125 void
 126 ValueBase::set(etl::handle<Canvas> x)
 127 {
 128         clear();
 129         if(x && x->is_inline())
 130                 _set(etl::handle<Canvas>(x));
 131         else
 132                 _set(etl::loose_handle<Canvas>(x));
 133         assert(get(x)==x);
 134 }
 135
 136 void
 137 ValueBase::set(const list_type &x)
 138 {
 139         _set(x);
 140 }
 141
 142 void
 143 ValueBase::set(const char* x)
 144 {
 145         _set(String(x));
 146 }
 147
 148 bool
 149 ValueBase::is_valid()const
 150 {
 151         return type>TYPE_NIL && type<TYPE_END && ref_count;
 152 }
 153
 154 bool
 155 ValueBase::empty()const
 156 {
 157         return !is_valid() || ((type==TYPE_LIST)?get_list().empty():false);
 158 }
 159
 160 ValueBase::Type
 161 ValueBase::get_contained_type()const
 162 {
 163         if(type!=TYPE_LIST || empty())
 164                 return TYPE_NIL;
 165         return get_list().front().get_type();
 166 }
 167
 168 ValueBase&
 169 ValueBase::operator=(const ValueBase& x)
 170 {
 171         if(data!=x.data)
 172         {
 173                 clear();
 174                 type=x.type;
 175                 data=x.data;
 176                 ref_count=x.ref_count;
 177         }
 178         loop_=x.loop_;
 179         return *this;
 180 }
 181
 182 void
 183 ValueBase::clear()
 184 {
 185         if(ref_count.unique() && data)
 186         {
 187                 switch(type)
 188                 {
 189                 case TYPE_BOOL:                 delete static_cast<bool*>(data);                break;
 190                 case TYPE_INTEGER:              delete static_cast<int*>(data);                 break;
 191                 case TYPE_ANGLE:                delete static_cast<Angle*>(data);               break;
 192                 case TYPE_VECTOR:               delete static_cast<Vector*>(data);              break;
 193                 case TYPE_TIME:                 delete static_cast<Time*>(data);                break;
 194                 case TYPE_REAL:                 delete static_cast<Real*>(data);                break;
 195                 case TYPE_COLOR:                delete static_cast<Color*>(data);               break;
 196                 case TYPE_SEGMENT:              delete static_cast<Segment*>(data);             break;
 197                 case TYPE_BLINEPOINT:   delete static_cast<BLinePoint*>(data);  break;
 198                 case TYPE_LIST:                 delete static_cast<list_type*>(data);   break;
 199                 case TYPE_STRING:               delete static_cast<String*>(data);              break;
 200                 case TYPE_GRADIENT:             delete static_cast<Gradient*>(data);    break;
 201                 case TYPE_CANVAS:
 202                 {
 203                         etl::handle<Canvas> canvas(get(etl::loose_handle<Canvas>()));
 204                         if(canvas && canvas->is_inline())
 205                                 delete static_cast<etl::handle<Canvas>*>(data);
 206                         else
 207                                 delete static_cast<etl::loose_handle<Canvas>*>(data);
 208                         break;
 209                 }
 210                 default:
 211                         break;
 212                 }
 213         }
 214
 215         ref_count.detach();
 216         data=0;
 217         type=TYPE_NIL;
 218 }
 219
 220
 221 String
 222 ValueBase::type_name(Type id)
 223 {
 224         // don't internationalize these type names - they're using in .sif files
 225         switch(id)
 226         {
 227         case TYPE_REAL:                 return "real";
 228         case TYPE_TIME:                 return "time";
 229         case TYPE_INTEGER:              return "integer";
 230         case TYPE_BOOL:                 return "bool";
 231         case TYPE_ANGLE:                return "angle";
 232         case TYPE_VECTOR:               return "vector";
 233         case TYPE_COLOR:                return "color";
 234         case TYPE_STRING:               return "string";
 235         case TYPE_CANVAS:               return "canvas";
 236         case TYPE_LIST:                 return "list";
 237         case TYPE_SEGMENT:              return "segment";
 238         case TYPE_GRADIENT:             return "gradient";
 239         case TYPE_BLINEPOINT:   return "bline_point";
 240         case TYPE_NIL:                  return "nil";
 241         default:
 242                 break;
 243         }
 244         synfig::warning("Encountered unknown ValueBase with an Type of %d",id);
 245 //      assert(0);
 246         return "UNKNOWN";
 247 }
 248
 249 ValueBase::Type
 250 ValueBase::ident_type(const String &str)
 251 {
 252         if(str=="nil" ||
 253            str=="null")                         return TYPE_NIL;
 254         else if(str=="time" ||
 255                         str==_("time"))         return TYPE_TIME;
 256         else if(str=="real" ||
 257                         str=="float" ||
 258                         str==_("real"))         return TYPE_REAL;
 259         else if(str=="integer" ||
 260                         str=="int" ||
 261                         str==_("integer"))      return TYPE_INTEGER;
 262         else if(str=="bool" ||
 263                         str==_("bool"))         return TYPE_BOOL;
 264         else if(str=="angle" ||
 265                         str=="degrees" ||
 266                         str=="radians" ||
 267                         str=="rotations")       return TYPE_ANGLE;
 268         else if(str=="vector" ||
 269                         str=="point")           return TYPE_VECTOR;
 270         else if(str=="color")           return TYPE_COLOR;
 271         else if(str=="string")          return TYPE_STRING;
 272         else if(str=="canvas")          return TYPE_CANVAS;
 273         else if(str=="list")            return TYPE_LIST;
 274         else if(str=="segment")         return TYPE_SEGMENT;
 275         else if(str=="gradient")        return TYPE_GRADIENT;
 276         else if(str=="bline_point" ||
 277                         str=="blinepoint")      return TYPE_BLINEPOINT;
 278
 279         return TYPE_NIL;
 280 }
 281
 282 bool
 283 ValueBase::operator==(const ValueBase& rhs)const
 284 {
 285         if(get_type()!=rhs.get_type())
 286                 return false;
 287         if(data==rhs.data)
 288                 return true;
 289
 290         switch(get_type())
 291         {
 292         case TYPE_TIME:                    return get(Time()).is_equal(rhs.get(Time()));
 293         case TYPE_REAL:                    return abs(get(Real())-rhs.get(Real()))<=0.00000000000001;
 294         case TYPE_INTEGER:                 return get(int())==rhs.get(int());
 295         case TYPE_BOOL:                    return get(bool())==rhs.get(bool());
 296         case TYPE_ANGLE:                   return get(Angle())==rhs.get(Angle());
 297         case TYPE_VECTOR:                  return get(Vector()).is_equal_to(rhs.get(Vector()));
 298         case TYPE_COLOR:                   return get(Color())==rhs.get(Color());
 299         case TYPE_STRING:                  return get(String())==rhs.get(String());
 300         case TYPE_CANVAS:                  return get(Canvas::LooseHandle())==rhs.get(Canvas::LooseHandle());
 301         case TYPE_LIST:                    return get_list()==rhs.get_list();
 302         case TYPE_SEGMENT:              // return get(Segment())==rhs.get(Segment());
 303         case TYPE_GRADIENT:             // return get(Gradient())==rhs.get(Gradient());
 304         case TYPE_BLINEPOINT:   // return get(BLinePoint())==rhs.get(BLinePoint());
 305         case TYPE_NIL:
 306         default:                                   return false;
 307         }
 308         return false;
 309 }