synfig-studio/trunk/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 **      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 "layerencapsulate.h"
  34 #include "layeradd.h"
  35 #include "layerremove.h"
  36 #include <synfigapp/canvasinterface.h>
  37
  38 #include <synfigapp/general.h>
  39
  40 #endif
  41
  42 using namespace std;
  43 using namespace etl;
  44 using namespace synfig;
  45 using namespace synfigapp;
  46 using namespace Action;
  47
  48 /* === M A C R O S ========================================================= */
  49
  50 ACTION_INIT(Action::LayerEncapsulate);
  51 ACTION_SET_NAME(Action::LayerEncapsulate,"layer_encapsulate");
  52 ACTION_SET_LOCAL_NAME(Action::LayerEncapsulate,N_("Encapsulate"));
  53 ACTION_SET_TASK(Action::LayerEncapsulate,"encapsulate");
  54 ACTION_SET_CATEGORY(Action::LayerEncapsulate,Action::CATEGORY_LAYER);
  55 ACTION_SET_PRIORITY(Action::LayerEncapsulate,0);
  56 ACTION_SET_VERSION(Action::LayerEncapsulate,"0.0");
  57 ACTION_SET_CVS_ID(Action::LayerEncapsulate,"$Id$");
  58
  59 /* === G L O B A L S ======================================================= */
  60
  61 /* === P R O C E D U R E S ================================================= */
  62
  63 /* === M E T H O D S ======================================================= */
  64
  65 Action::LayerEncapsulate::LayerEncapsulate()
  66 {
  67 }
  68
  69 Action::ParamVocab
  70 Action::LayerEncapsulate::get_param_vocab()
  71 {
  72         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  73
  74         ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)
  75                 .set_local_name(_("Layer"))
  76                 .set_desc(_("Layer to be encapsulated"))
  77                 .set_supports_multiple()
  78         );
  79
  80         return ret;
  81 }
  82
  83 bool
  84 Action::LayerEncapsulate::is_candidate(const ParamList &x)
  85 {
  86         return candidate_check(get_param_vocab(),x);
  87 }
  88
  89 bool
  90 Action::LayerEncapsulate::set_param(const synfig::String& name, const Action::Param &param)
  91 {
  92         if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
  93         {
  94                 layers.push_back(param.get_layer());
  95
  96                 return true;
  97         }
  98
  99         return Action::CanvasSpecific::set_param(name,param);
 100 }
 101
 102 bool
 103 Action::LayerEncapsulate::is_ready()const
 104 {
 105         if(layers.empty())
 106                 return false;
 107         return Action::CanvasSpecific::is_ready();
 108 }
 109
 110 int
 111 Action::LayerEncapsulate::lowest_depth()const
 112 {
 113         std::list<synfig::Layer::Handle>::const_iterator iter;
 114         int lowest_depth(0x7fffffff);
 115
 116         for(iter=layers.begin();iter!=layers.end();++iter)
 117         {
 118                 int depth((*iter)->get_depth());
 119                 if(depth<lowest_depth)
 120                         lowest_depth=depth;
 121         }
 122         if(lowest_depth==0x7fffffff)
 123                 return 0;
 124         return lowest_depth;
 125 }
 126
 127 void
 128 Action::LayerEncapsulate::prepare()
 129 {
 130
 131         if(!first_time())
 132                 return;
 133
 134         if(layers.empty())
 135                 throw Error(_("No layers to encapsulate"));
 136
 137         // First create the new canvas and layer
 138         if(!child_canvas)
 139                 child_canvas=Canvas::create_inline(get_canvas());
 140
 141         Layer::Handle new_layer(Layer::create("PasteCanvas"));
 142
 143         new_layer->set_param("canvas",child_canvas);
 144
 145         int target_depth(lowest_depth());
 146
 147         // Add the layer
 148         {
 149                 Action::Handle action(LayerAdd::create());
 150
 151                 action->set_param("canvas",get_canvas());
 152                 action->set_param("canvas_interface",get_canvas_interface());
 153                 action->set_param("new",new_layer);
 154
 155                 add_action(action);
 156         }
 157
 158         // Move the layer
 159         {
 160                 Action::Handle action(Action::create("layer_move"));
 161
 162                 assert(action);
 163
 164                 action->set_param("canvas",get_canvas());
 165                 action->set_param("canvas_interface",get_canvas_interface());
 166                 action->set_param("layer",new_layer);
 167                 action->set_param("new_index",target_depth);
 168
 169                 add_action(action);
 170         }
 171
 172         std::list<synfig::Layer::Handle>::reverse_iterator iter;
 173
 174         for(iter=layers.rbegin();iter!=layers.rend();++iter)
 175         {
 176                 Layer::Handle layer(*iter);
 177
 178                 Canvas::Handle subcanvas(layer->get_canvas());
 179
 180                 // Find the iterator for the layer
 181                 Canvas::iterator iter=find(subcanvas->begin(),subcanvas->end(),layer);
 182
 183                 // If we couldn't find the layer in the canvas, then bail
 184                 if(*iter!=layer)
 185                         throw Error(_("This layer doesn't exist anymore."));
 186
 187                 if(!subcanvas)
 188                         throw Error(_("This layer doesn't have a parent canvas"));
 189
 190                 // If the subcanvas isn't the same as the canvas,
 191                 // then it had better be an inline canvas. If not,
 192                 // bail
 193                 if(get_canvas()!=subcanvas && !subcanvas->is_inline())
 194                         throw Error(_("This layer doesn't belong to this canvas anymore"));
 195
 196                 if(get_canvas()!=subcanvas)
 197                         throw Error(_("get_canvas()!=subcanvas"));
 198
 199                 // Remove the layer from the old canvas
 200                 {
 201                         Action::Handle action(LayerRemove::create());
 202
 203                         action->set_param("canvas",subcanvas);
 204                         action->set_param("canvas_interface",get_canvas_interface());
 205                         action->set_param("layer",layer);
 206
 207                         add_action(action);
 208                 }
 209                 // Add the layer to the new canvas
 210                 {
 211                         Action::Handle action(LayerAdd::create());
 212
 213                         action->set_param("canvas",child_canvas);
 214                         action->set_param("canvas_interface",get_canvas_interface());
 215                         action->set_param("new",layer);
 216
 217                         add_action(action);
 218                 }
 219         }
 220 }