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, 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 "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_NO_GET_LOCAL_NAME(Action::LayerEncapsulate);
  51 ACTION_SET_NAME(Action::LayerEncapsulate,"LayerEncapsulate");
  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 synfig::String
  70 Action::LayerEncapsulate::get_local_name()const
  71 {
  72         return get_layer_descriptions(layers, _("Encapsulate Layer"), _("Encapsulate Layers"));
  73 }
  74
  75 Action::ParamVocab
  76 Action::LayerEncapsulate::get_param_vocab()
  77 {
  78         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  79
  80         ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)
  81                 .set_local_name(_("Layer"))
  82                 .set_desc(_("Layer to be encapsulated"))
  83                 .set_supports_multiple()
  84         );
  85
  86         return ret;
  87 }
  88
  89 bool
  90 Action::LayerEncapsulate::is_candidate(const ParamList &x)
  91 {
  92         return candidate_check(get_param_vocab(),x);
  93 }
  94
  95 bool
  96 Action::LayerEncapsulate::set_param(const synfig::String& name, const Action::Param &param)
  97 {
  98         if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
  99         {
 100                 layers.push_back(param.get_layer());
 101
 102                 return true;
 103         }
 104
 105         return Action::CanvasSpecific::set_param(name,param);
 106 }
 107
 108 bool
 109 Action::LayerEncapsulate::is_ready()const
 110 {
 111         if(layers.empty())
 112                 return false;
 113         return Action::CanvasSpecific::is_ready();
 114 }
 115
 116 int
 117 Action::LayerEncapsulate::lowest_depth()const
 118 {
 119         std::list<synfig::Layer::Handle>::const_iterator iter;
 120         int lowest_depth(0x7fffffff);
 121
 122         for(iter=layers.begin();iter!=layers.end();++iter)
 123         {
 124                 int depth((*iter)->get_depth());
 125                 if(depth<lowest_depth)
 126                         lowest_depth=depth;
 127         }
 128         if(lowest_depth==0x7fffffff)
 129                 return 0;
 130         return lowest_depth;
 131 }
 132
 133 void
 134 Action::LayerEncapsulate::prepare()
 135 {
 136
 137         if(!first_time())
 138                 return;
 139
 140         if(layers.empty())
 141                 throw Error(_("No layers to encapsulate"));
 142
 143         // First create the new canvas and layer
 144         if(!child_canvas)
 145                 child_canvas=Canvas::create_inline(get_canvas());
 146
 147         Layer::Handle new_layer(Layer::create("PasteCanvas"));
 148
 149         new_layer->set_param("canvas",child_canvas);
 150
 151         int target_depth(lowest_depth());
 152
 153         // Add the layer
 154         {
 155                 Action::Handle action(LayerAdd::create());
 156
 157                 action->set_param("canvas",get_canvas());
 158                 action->set_param("canvas_interface",get_canvas_interface());
 159                 action->set_param("new",new_layer);
 160
 161                 add_action(action);
 162         }
 163
 164         // Move the layer
 165         {
 166                 Action::Handle action(Action::create("LayerMove"));
 167
 168                 assert(action);
 169
 170                 action->set_param("canvas",get_canvas());
 171                 action->set_param("canvas_interface",get_canvas_interface());
 172                 action->set_param("layer",new_layer);
 173                 action->set_param("new_index",target_depth);
 174
 175                 add_action(action);
 176         }
 177
 178         std::list<synfig::Layer::Handle>::reverse_iterator iter;
 179
 180         for(iter=layers.rbegin();iter!=layers.rend();++iter)
 181         {
 182                 Layer::Handle layer(*iter);
 183
 184                 Canvas::Handle subcanvas(layer->get_canvas());
 185
 186                 // Find the iterator for the layer
 187                 Canvas::iterator iter=find(subcanvas->begin(),subcanvas->end(),layer);
 188
 189                 // If we couldn't find the layer in the canvas, then bail
 190                 if(*iter!=layer)
 191                         throw Error(_("This layer doesn't exist anymore."));
 192
 193                 if(!subcanvas)
 194                         throw Error(_("This layer doesn't have a parent canvas"));
 195
 196                 // If the subcanvas isn't the same as the canvas,
 197                 // then it had better be an inline canvas. If not,
 198                 // bail
 199                 if(get_canvas()!=subcanvas && !subcanvas->is_inline())
 200                         throw Error(_("This layer doesn't belong to this canvas anymore"));
 201
 202                 if(get_canvas()!=subcanvas)
 203                         throw Error(_("get_canvas()!=subcanvas"));
 204
 205                 // Remove the layer from the old canvas
 206                 {
 207                         Action::Handle action(LayerRemove::create());
 208
 209                         action->set_param("canvas",subcanvas);
 210                         action->set_param("canvas_interface",get_canvas_interface());
 211                         action->set_param("layer",layer);
 212
 213                         add_action(action);
 214                 }
 215                 // Add the layer to the new canvas
 216                 {
 217                         Action::Handle action(LayerAdd::create());
 218
 219                         action->set_param("canvas",child_canvas);
 220                         action->set_param("canvas_interface",get_canvas_interface());
 221                         action->set_param("new",layer);
 222
 223                         add_action(action);
 224                 }
 225         }
 226 }