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