synfig-core/tags/stable/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, 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 "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 void
 149 ValueBase::set(char* x)
 150 {
 151         _set(String(x));
 152 }
 153
 154 bool
 155 ValueBase::is_valid()const
 156 {
 157         return type>TYPE_NIL && type<TYPE_END && ref_count;
 158 }
 159
 160 bool
 161 ValueBase::empty()const
 162 {
 163         return !is_valid() || ((type==TYPE_LIST)?get_list().empty():false);
 164 }
 165
 166 ValueBase::Type
 167 ValueBase::get_contained_type()const
 168 {
 169         if(type!=TYPE_LIST || empty())
 170                 return TYPE_NIL;
 171         return get_list().front().get_type();
 172 }
 173
 174 ValueBase&
 175 ValueBase::operator=(const ValueBase& x)
 176 {
 177         if(data!=x.data)
 178         {
 179                 clear();
 180                 type=x.type;
 181                 data=x.data;
 182                 ref_count=x.ref_count;
 183         }
 184         loop_=x.loop_;
 185         return *this;
 186 }
 187
 188 void
 189 ValueBase::clear()
 190 {
 191         if(ref_count.unique() && data)
 192         {
 193                 switch(type)
 194                 {
 195                 case TYPE_BOOL:                 delete static_cast<bool*>(data);                break;
 196                 case TYPE_INTEGER:              delete static_cast<int*>(data);                 break;
 197                 case TYPE_ANGLE:                delete static_cast<Angle*>(data);               break;
 198                 case TYPE_TIME:                 delete static_cast<Time*>(data);                break;
 199                 case TYPE_REAL:                 delete static_cast<Real*>(data);                break;
 200                 case TYPE_VECTOR:               delete static_cast<Vector*>(data);              break;
 201                 case TYPE_COLOR:                delete static_cast<Color*>(data);               break;
 202                 case TYPE_SEGMENT:              delete static_cast<Segment*>(data);             break;
 203                 case TYPE_BLINEPOINT:   delete static_cast<BLinePoint*>(data);  break;
 204                 case TYPE_LIST:                 delete static_cast<list_type*>(data);   break;
 205                 case TYPE_CANVAS:
 206                 {
 207                         etl::handle<Canvas> canvas(get(etl::loose_handle<Canvas>()));
 208                         if(canvas && canvas->is_inline())
 209                                 delete static_cast<etl::handle<Canvas>*>(data);
 210                         else
 211                                 delete static_cast<etl::loose_handle<Canvas>*>(data);
 212                         break;
 213                 }
 214                 case TYPE_STRING:               delete static_cast<String*>(data);              break;
 215                 case TYPE_GRADIENT:             delete static_cast<Gradient*>(data);    break;
 216                 default:
 217                         break;
 218                 }
 219         }
 220
 221         ref_count.detach();
 222         data=0;
 223         type=TYPE_NIL;
 224 }
 225
 226
 227 String
 228 ValueBase::type_name(Type id)
 229 {
 230         // don't internationalize these type names - they're using in .sif files
 231         switch(id)
 232         {
 233                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 234         case TYPE_BOOL:                 return N_("bool");
 235                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 236         case TYPE_INTEGER:              return N_("integer");
 237                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 238         case TYPE_ANGLE:                return N_("angle");
 239                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 240         case TYPE_TIME:                 return N_("time");
 241                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 242         case TYPE_REAL:                 return N_("real");
 243                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 244         case TYPE_VECTOR:               return N_("vector");
 245                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 246         case TYPE_COLOR:                return N_("color");
 247                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 248         case TYPE_SEGMENT:              return N_("segment");
 249                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 250         case TYPE_BLINEPOINT:   return N_("bline_point");
 251                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 252         case TYPE_LIST:                 return N_("list");
 253                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 254         case TYPE_CANVAS:               return N_("canvas");
 255                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 256         case TYPE_STRING:               return N_("string");
 257                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 258         case TYPE_GRADIENT:             return N_("gradient");
 259                 /* TRANSLATORS: this is the name of a type -- see http://synfig.org/Types */
 260         case TYPE_NIL:                  return N_("nil");
 261         default:
 262                 break;
 263         }
 264         synfig::warning("Encountered unknown ValueBase with an Type of %d",id);
 265 //      assert(0);
 266         return "UNKNOWN";
 267 }
 268
 269 String
 270 ValueBase::type_local_name(Type id)
 271 {
 272         return dgettext("synfig",type_name(id).c_str());
 273 }
 274
 275 ValueBase::Type
 276 ValueBase::ident_type(const String &str)
 277 {
 278         if(str=="nil" ||
 279            str=="null")                         return TYPE_NIL;
 280         else if(str=="time" ||
 281                         str==_("time"))         return TYPE_TIME;
 282         else if(str=="real" ||
 283                         str=="float" ||
 284                         str==_("real"))         return TYPE_REAL;
 285         else if(str=="integer" ||
 286                         str=="int" ||
 287                         str==_("integer"))      return TYPE_INTEGER;
 288         else if(str=="bool" ||
 289                         str==_("bool"))         return TYPE_BOOL;
 290         else if(str=="angle" ||
 291                         str=="degrees" ||
 292                         str=="radians" ||
 293                         str=="rotations")       return TYPE_ANGLE;
 294         else if(str=="vector" ||
 295                         str=="point")           return TYPE_VECTOR;
 296         else if(str=="color")           return TYPE_COLOR;
 297         else if(str=="string")          return TYPE_STRING;
 298         else if(str=="canvas")          return TYPE_CANVAS;
 299         else if(str=="list")            return TYPE_LIST;
 300         else if(str=="segment")         return TYPE_SEGMENT;
 301         else if(str=="gradient")        return TYPE_GRADIENT;
 302         else if(str=="bline_point" ||
 303                         str=="blinepoint")      return TYPE_BLINEPOINT;
 304
 305         return TYPE_NIL;
 306 }
 307
 308 bool
 309 ValueBase::operator==(const ValueBase& rhs)const
 310 {
 311         if(get_type()!=rhs.get_type())
 312                 return false;
 313         if(data==rhs.data)
 314                 return true;
 315
 316         switch(get_type())
 317         {
 318         case TYPE_TIME:                    return get(Time()).is_equal(rhs.get(Time()));
 319         case TYPE_REAL:                    return abs(get(Real())-rhs.get(Real()))<=0.00000000000001;
 320         case TYPE_INTEGER:                 return get(int())==rhs.get(int());
 321         case TYPE_BOOL:                    return get(bool())==rhs.get(bool());
 322         case TYPE_ANGLE:                   return get(Angle())==rhs.get(Angle());
 323         case TYPE_VECTOR:                  return get(Vector()).is_equal_to(rhs.get(Vector()));
 324         case TYPE_COLOR:                   return get(Color())==rhs.get(Color());
 325         case TYPE_STRING:                  return get(String())==rhs.get(String());
 326         case TYPE_CANVAS:                  return get(Canvas::LooseHandle())==rhs.get(Canvas::LooseHandle());
 327         case TYPE_LIST:                    return get_list()==rhs.get_list();
 328         case TYPE_SEGMENT:              // return get(Segment())==rhs.get(Segment());
 329         case TYPE_GRADIENT:             // return get(Gradient())==rhs.get(Gradient());
 330         case TYPE_BLINEPOINT:   // return get(BLinePoint())==rhs.get(BLinePoint());
 331         case TYPE_NIL:
 332         default:                                   return false;
 333         }
 334         return false;
 335 }