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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file layerraise.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id: layerencapsulate.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 "layerencapsulate.h"
  32 #include "layeradd.h"
  33 #include "layerremove.h"
  34 #include <synfigapp/canvasinterface.h>
  35
  36 #endif
  37
  38 using namespace std;
  39 using namespace etl;
  40 using namespace synfig;
  41 using namespace synfigapp;
  42 using namespace Action;
  43
  44 /* === M A C R O S ========================================================= */
  45
  46 ACTION_INIT(Action::LayerEncapsulate);
  47 ACTION_SET_NAME(Action::LayerEncapsulate,"layer_encapsulate");
  48 ACTION_SET_LOCAL_NAME(Action::LayerEncapsulate,"Encapsulate");
  49 ACTION_SET_TASK(Action::LayerEncapsulate,"encapsulate");
  50 ACTION_SET_CATEGORY(Action::LayerEncapsulate,Action::CATEGORY_LAYER);
  51 ACTION_SET_PRIORITY(Action::LayerEncapsulate,0);
  52 ACTION_SET_VERSION(Action::LayerEncapsulate,"0.0");
  53 ACTION_SET_CVS_ID(Action::LayerEncapsulate,"$Id: layerencapsulate.cpp,v 1.1.1.1 2005/01/07 03:34:37 darco Exp $");
  54
  55 /* === G L O B A L S ======================================================= */
  56
  57 /* === P R O C E D U R E S ================================================= */
  58
  59 /* === M E T H O D S ======================================================= */
  60
  61 Action::LayerEncapsulate::LayerEncapsulate()
  62 {
  63 }
  64
  65 Action::ParamVocab
  66 Action::LayerEncapsulate::get_param_vocab()
  67 {
  68         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  69
  70         ret.push_back(ParamDesc("layer",Param::TYPE_LAYER)
  71                 .set_local_name(_("Layer"))
  72                 .set_desc(_("Layer to be encapsulated"))
  73                 .set_supports_multiple()
  74         );
  75
  76         return ret;
  77 }
  78
  79 bool
  80 Action::LayerEncapsulate::is_canidate(const ParamList &x)
  81 {
  82         return canidate_check(get_param_vocab(),x);
  83 }
  84
  85 bool
  86 Action::LayerEncapsulate::set_param(const synfig::String& name, const Action::Param &param)
  87 {
  88         if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
  89         {
  90                 layers.push_back(param.get_layer());
  91
  92                 return true;
  93         }
  94
  95         return Action::CanvasSpecific::set_param(name,param);
  96 }
  97
  98 bool
  99 Action::LayerEncapsulate::is_ready()const
 100 {
 101         if(layers.empty())
 102                 return false;
 103         return Action::CanvasSpecific::is_ready();
 104 }
 105
 106 int
 107 Action::LayerEncapsulate::lowest_depth()const
 108 {
 109         std::list<synfig::Layer::Handle>::const_iterator iter;
 110         int lowest_depth(0x7fffffff);
 111
 112         for(iter=layers.begin();iter!=layers.end();++iter)
 113         {
 114                 int depth((*iter)->get_depth());
 115                 if(depth<lowest_depth)
 116                         lowest_depth=depth;
 117         }
 118         if(lowest_depth==0x7fffffff)
 119                 return 0;
 120         return lowest_depth;
 121 }
 122
 123 void
 124 Action::LayerEncapsulate::prepare()
 125 {
 126
 127         if(!first_time())
 128                 return;
 129
 130         if(layers.empty())
 131                 throw Error("No layers to encapsulate");
 132
 133         // First create the new canvas and layer
 134         if(!child_canvas)
 135                 child_canvas=Canvas::create_inline(get_canvas());
 136
 137         Layer::Handle new_layer(Layer::create("PasteCanvas"));
 138
 139         new_layer->set_param("canvas",child_canvas);
 140
 141         int target_depth(lowest_depth());
 142
 143         // Add the layer
 144         {
 145                 Action::Handle action(LayerAdd::create());
 146
 147                 action->set_param("canvas",get_canvas());
 148                 action->set_param("canvas_interface",get_canvas_interface());
 149                 action->set_param("new",new_layer);
 150
 151                 add_action(action);
 152         }
 153
 154         // Move the layer
 155         {
 156                 Action::Handle action(Action::create("layer_move"));
 157
 158                 assert(action);
 159
 160                 action->set_param("canvas",get_canvas());
 161                 action->set_param("canvas_interface",get_canvas_interface());
 162                 action->set_param("layer",new_layer);
 163                 action->set_param("new_index",target_depth);
 164
 165                 add_action(action);
 166         }
 167
 168         std::list<synfig::Layer::Handle>::reverse_iterator iter;
 169
 170         for(iter=layers.rbegin();iter!=layers.rend();++iter)
 171         {
 172                 Layer::Handle layer(*iter);
 173
 174                 Canvas::Handle subcanvas(layer->get_canvas());
 175
 176                 // Find the iterator for the layer
 177                 Canvas::iterator iter=find(subcanvas->begin(),subcanvas->end(),layer);
 178
 179                 // If we couldn't find the layer in the canvas, then bail
 180                 if(*iter!=layer)
 181                         throw Error(_("This layer doesn't exist anymore."));
 182
 183                 if(!subcanvas)
 184                         throw Error(_("This layer doesn't have a parent canvas"));
 185
 186                 // If the subcanvas isn't the same as the canvas,
 187                 // then it had better be an inline canvas. If not,
 188                 // bail
 189                 if(get_canvas()!=subcanvas && !subcanvas->is_inline())
 190                         throw Error(_("This layer doesn't belong to this canvas anymore"));
 191
 192                 if(get_canvas()!=subcanvas)
 193                         throw Error(_("get_canvas()!=subcanvas"));
 194
 195                 // Remove the layer from the old canvas
 196                 {
 197                         Action::Handle action(LayerRemove::create());
 198
 199                         action->set_param("canvas",subcanvas);
 200                         action->set_param("canvas_interface",get_canvas_interface());
 201                         action->set_param("layer",layer);
 202
 203                         add_action(action);
 204                 }
 205                 // Add the layer to the new canvas
 206                 {
 207                         Action::Handle action(LayerAdd::create());
 208
 209                         action->set_param("canvas",child_canvas);
 210                         action->set_param("canvas_interface",get_canvas_interface());
 211                         action->set_param("new",layer);
 212
 213                         add_action(action);
 214                 }
 215         }
 216 }