synfig-studio/trunk/src/synfigapp/actions/layerremove.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file action_layerremove.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id: layerremove.cpp,v 1.1.1.1 2005/01/07 03:34:37 darco Exp $
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002 Robert B. Quattlebaum Jr.
   9 **
  10 **      This software and associated documentation
  11 **      are CONFIDENTIAL and PROPRIETARY property of
  12 **      the above-mentioned copyright holder.
  13 **
  14 **      You may not copy, print, publish, or in any
  15 **      other way distribute this software without
  16 **      a prior written agreement with
  17 **      the copyright holder.
  18 **      \endlegal
  19 */
  20 /* ========================================================================= */
  21
  22 /* === H E A D E R S ======================================================= */
  23
  24 #ifdef USING_PCH
  25 #       include "pch.h"
  26 #else
  27 #ifdef HAVE_CONFIG_H
  28 #       include <config.h>
  29 #endif
  30
  31 #include "layerremove.h"
  32 #include <synfigapp/canvasinterface.h>
  33
  34 #endif
  35
  36 using namespace std;
  37 using namespace etl;
  38 using namespace synfig;
  39 using namespace synfigapp;
  40 using namespace Action;
  41
  42 /* === M A C R O S ========================================================= */
  43
  44 ACTION_INIT(Action::LayerRemove);
  45 ACTION_SET_NAME(Action::LayerRemove,"layer_remove");
  46 ACTION_SET_LOCAL_NAME(Action::LayerRemove,"Remove Layer");
  47 ACTION_SET_TASK(Action::LayerRemove,"remove");
  48 ACTION_SET_CATEGORY(Action::LayerRemove,Action::CATEGORY_LAYER);
  49 ACTION_SET_PRIORITY(Action::LayerRemove,0);
  50 ACTION_SET_VERSION(Action::LayerRemove,"0.0");
  51 ACTION_SET_CVS_ID(Action::LayerRemove,"$Id: layerremove.cpp,v 1.1.1.1 2005/01/07 03:34:37 darco Exp $");
  52
  53 /* === G L O B A L S ======================================================= */
  54
  55 /* === P R O C E D U R E S ================================================= */
  56
  57 /* === M E T H O D S ======================================================= */
  58
  59 Action::LayerRemove::LayerRemove()
  60 {
  61 }
  62
  63 Action::ParamVocab
  64 Action::LayerRemove::get_param_vocab()
  65 {
  66         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  67
  68         ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)
  69                 .set_local_name(_("Layer"))
  70                 .set_desc(_("Layer to be deleted"))
  71                 .set_supports_multiple()
  72         );
  73
  74         return ret;
  75 }
  76
  77 bool
  78 Action::LayerRemove::is_canidate(const ParamList &x)
  79 {
  80         return canidate_check(get_param_vocab(),x);
  81 }
  82
  83 bool
  84 Action::LayerRemove::set_param(const synfig::String& name, const Action::Param &param)
  85 {
  86         if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
  87         {
  88                 std::pair<synfig::Layer::Handle,int> layer_pair;
  89                 layer_pair.first=param.get_layer();
  90                 layer_list.push_back(layer_pair);
  91
  92                 return true;
  93         }
  94
  95         return Action::CanvasSpecific::set_param(name,param);
  96 }
  97
  98 bool
  99 Action::LayerRemove::is_ready()const
 100 {
 101         if(layer_list.empty())
 102                 return false;
 103         return Action::CanvasSpecific::is_ready();
 104 }
 105
 106 void
 107 Action::LayerRemove::perform()
 108 {
 109         std::list<std::pair<synfig::Layer::Handle,int> >::iterator iter;
 110         for(iter=layer_list.begin();iter!=layer_list.end();++iter)
 111         {
 112                 Layer::Handle layer(iter->first);
 113 //              int& depth(iter->second);
 114                 Canvas::Handle subcanvas(layer->get_canvas());
 115
 116                 // Find the iterator for the layer
 117                 Canvas::iterator iter2=find(subcanvas->begin(),subcanvas->end(),layer);
 118
 119                 // If we couldn't find the layer in the canvas, then bail
 120                 if(*iter2!=layer)
 121                 {
 122                         /*!     \fixme We should really undo all prior removals
 123                         **      before we go throwing shit around */
 124                         throw Error(_("This layer doesn't exist anymore."));
 125                 }
 126
 127                 // If the subcanvas isn't the same as the canvas,
 128                 // then it had better be an inline canvas. If not,
 129                 // bail
 130                 if(get_canvas()!=subcanvas && !subcanvas->is_inline())
 131                 {
 132                         /*!     \fixme We should really undo all prior removals
 133                         **      before we go throwing shit around */
 134                         throw Error(_("This layer doesn't belong to this canvas anymore"));
 135                 }
 136
 137                 set_canvas(subcanvas);
 138
 139                 // Calculate the depth that the layer was at (For the undo)
 140                 iter->second=layer->get_depth();
 141
 142                 // Mark ourselves as dirty if necessary
 143                 set_dirty(layer->active());
 144
 145                 // Remove the layer from the canvas
 146                 subcanvas->erase(iter2);
 147
 148                 // Signal that a layer has been removed
 149                 if(get_canvas_interface())
 150                         get_canvas_interface()->signal_layer_removed()(layer);
 151         }
 152 }
 153
 154 void
 155 Action::LayerRemove::undo()
 156 {
 157         std::list<std::pair<synfig::Layer::Handle,int> >::reverse_iterator iter;
 158         for(iter=layer_list.rbegin();iter!=layer_list.rend();++iter)
 159         {
 160                 Layer::Handle layer(iter->first);
 161                 int& depth(iter->second);
 162
 163                 // Set the layer's canvas
 164                 layer->set_canvas(get_canvas());
 165
 166                 // Make sure that the depth is valid
 167                 if(get_canvas()->size()<depth)
 168                         depth=get_canvas()->size();
 169
 170                 // Mark ourselves as dirty if necessary
 171                 set_dirty(layer->active());
 172
 173                 // Insert the layer into the canvas at the desired depth
 174                 get_canvas()->insert(get_canvas()->begin()+depth,layer);
 175
 176                 // Signal that a layer has been inserted
 177                 if(get_canvas_interface())
 178                         get_canvas_interface()->signal_layer_inserted()(layer,depth);
 179         }
 180 }