synfig-studio/tags/synfigstudio_0_61_06/src/synfigapp/actions/layerencapsulate.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file layerencapsulate.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include "layerencapsulate.h"
  33 #include "layeradd.h"
  34 #include "layerremove.h"
  35 #include <synfigapp/canvasinterface.h>
  36
  37 #endif
  38
  39 using namespace std;
  40 using namespace etl;
  41 using namespace synfig;
  42 using namespace synfigapp;
  43 using namespace Action;
  44
  45 /* === M A C R O S ========================================================= */
  46
  47 ACTION_INIT(Action::LayerEncapsulate);
  48 ACTION_SET_NAME(Action::LayerEncapsulate,"layer_encapsulate");
  49 ACTION_SET_LOCAL_NAME(Action::LayerEncapsulate,"Encapsulate");
  50 ACTION_SET_TASK(Action::LayerEncapsulate,"encapsulate");
  51 ACTION_SET_CATEGORY(Action::LayerEncapsulate,Action::CATEGORY_LAYER);
  52 ACTION_SET_PRIORITY(Action::LayerEncapsulate,0);
  53 ACTION_SET_VERSION(Action::LayerEncapsulate,"0.0");
  54 ACTION_SET_CVS_ID(Action::LayerEncapsulate,"$Id$");
  55
  56 /* === G L O B A L S ======================================================= */
  57
  58 /* === P R O C E D U R E S ================================================= */
  59
  60 /* === M E T H O D S ======================================================= */
  61
  62 Action::LayerEncapsulate::LayerEncapsulate()
  63 {
  64 }
  65
  66 Action::ParamVocab
  67 Action::LayerEncapsulate::get_param_vocab()
  68 {
  69         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  70
  71         ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)
  72                 .set_local_name(_("Layer"))
  73                 .set_desc(_("Layer to be encapsulated"))
  74                 .set_supports_multiple()
  75         );
  76
  77         return ret;
  78 }
  79
  80 bool
  81 Action::LayerEncapsulate::is_candidate(const ParamList &x)
  82 {
  83         return candidate_check(get_param_vocab(),x);
  84 }
  85
  86 bool
  87 Action::LayerEncapsulate::set_param(const synfig::String& name, const Action::Param &param)
  88 {
  89         if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
  90         {
  91                 layers.push_back(param.get_layer());
  92
  93                 return true;
  94         }
  95
  96         return Action::CanvasSpecific::set_param(name,param);
  97 }
  98
  99 bool
 100 Action::LayerEncapsulate::is_ready()const
 101 {
 102         if(layers.empty())
 103                 return false;
 104         return Action::CanvasSpecific::is_ready();
 105 }
 106
 107 int
 108 Action::LayerEncapsulate::lowest_depth()const
 109 {
 110         std::list<synfig::Layer::Handle>::const_iterator iter;
 111         int lowest_depth(0x7fffffff);
 112
 113         for(iter=layers.begin();iter!=layers.end();++iter)
 114         {
 115                 int depth((*iter)->get_depth());
 116                 if(depth<lowest_depth)
 117                         lowest_depth=depth;
 118         }
 119         if(lowest_depth==0x7fffffff)
 120                 return 0;
 121         return lowest_depth;
 122 }
 123
 124 void
 125 Action::LayerEncapsulate::prepare()
 126 {
 127
 128         if(!first_time())
 129                 return;
 130
 131         if(layers.empty())
 132                 throw Error("No layers to encapsulate");
 133
 134         // First create the new canvas and layer
 135         if(!child_canvas)
 136                 child_canvas=Canvas::create_inline(get_canvas());
 137
 138         Layer::Handle new_layer(Layer::create("PasteCanvas"));
 139
 140         new_layer->set_param("canvas",child_canvas);
 141
 142         int target_depth(lowest_depth());
 143
 144         // Add the layer
 145         {
 146                 Action::Handle action(LayerAdd::create());
 147
 148                 action->set_param("canvas",get_canvas());
 149                 action->set_param("canvas_interface",get_canvas_interface());
 150                 action->set_param("new",new_layer);
 151
 152                 add_action(action);
 153         }
 154
 155         // Move the layer
 156         {
 157                 Action::Handle action(Action::create("layer_move"));
 158
 159                 assert(action);
 160
 161                 action->set_param("canvas",get_canvas());
 162                 action->set_param("canvas_interface",get_canvas_interface());
 163                 action->set_param("layer",new_layer);
 164                 action->set_param("new_index",target_depth);
 165
 166                 add_action(action);
 167         }
 168
 169         std::list<synfig::Layer::Handle>::reverse_iterator iter;
 170
 171         for(iter=layers.rbegin();iter!=layers.rend();++iter)
 172         {
 173                 Layer::Handle layer(*iter);
 174
 175                 Canvas::Handle subcanvas(layer->get_canvas());
 176
 177                 // Find the iterator for the layer
 178                 Canvas::iterator iter=find(subcanvas->begin(),subcanvas->end(),layer);
 179
 180                 // If we couldn't find the layer in the canvas, then bail
 181                 if(*iter!=layer)
 182                         throw Error(_("This layer doesn't exist anymore."));
 183
 184                 if(!subcanvas)
 185                         throw Error(_("This layer doesn't have a parent canvas"));
 186
 187                 // If the subcanvas isn't the same as the canvas,
 188                 // then it had better be an inline canvas. If not,
 189                 // bail
 190                 if(get_canvas()!=subcanvas && !subcanvas->is_inline())
 191                         throw Error(_("This layer doesn't belong to this canvas anymore"));
 192
 193                 if(get_canvas()!=subcanvas)
 194                         throw Error(_("get_canvas()!=subcanvas"));
 195
 196                 // Remove the layer from the old canvas
 197                 {
 198                         Action::Handle action(LayerRemove::create());
 199
 200                         action->set_param("canvas",subcanvas);
 201                         action->set_param("canvas_interface",get_canvas_interface());
 202                         action->set_param("layer",layer);
 203
 204                         add_action(action);
 205                 }
 206                 // Add the layer to the new canvas
 207                 {
 208                         Action::Handle action(LayerAdd::create());
 209
 210                         action->set_param("canvas",child_canvas);
 211                         action->set_param("canvas_interface",get_canvas_interface());
 212                         action->set_param("new",layer);
 213
 214                         add_action(action);
 215                 }
 216         }
 217 }