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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file layermove.cpp
   3 **      \brief Template File
   4 **
   5 **      $Id$
   6 **
   7 **      \legal
   8 **      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
   9 **
  10 **      This package is free software; you can redistribute it and/or
  11 **      modify it under the terms of the GNU General Public License as
  12 **      published by the Free Software Foundation; either version 2 of
  13 **      the License, or (at your option) any later version.
  14 **
  15 **      This package is distributed in the hope that it will be useful,
  16 **      but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 **      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18 **      General Public License for more details.
  19 **      \endlegal
  20 */
  21 /* ========================================================================= */
  22
  23 /* === H E A D E R S ======================================================= */
  24
  25 #ifdef USING_PCH
  26 #       include "pch.h"
  27 #else
  28 #ifdef HAVE_CONFIG_H
  29 #       include <config.h>
  30 #endif
  31
  32 #include "layermove.h"
  33 #include <synfigapp/canvasinterface.h>
  34
  35 #include <synfigapp/general.h>
  36
  37 #endif
  38
  39 using namespace std;
  40 using namespace etl;
  41 using namespace synfig;
  42 using namespace synfigapp;
  43 using namespace Action;
  44
  45 /* === M A C R O S ========================================================= */
  46
  47 ACTION_INIT(Action::LayerMove);
  48 ACTION_SET_NAME(Action::LayerMove,"layer_move");
  49 ACTION_SET_LOCAL_NAME(Action::LayerMove,N_("Move Layer"));
  50 ACTION_SET_TASK(Action::LayerMove,"move");
  51 ACTION_SET_CATEGORY(Action::LayerMove,Action::CATEGORY_LAYER);
  52 ACTION_SET_PRIORITY(Action::LayerMove,0);
  53 ACTION_SET_VERSION(Action::LayerMove,"0.0");
  54 ACTION_SET_CVS_ID(Action::LayerMove,"$Id$");
  55
  56 /* === G L O B A L S ======================================================= */
  57
  58 static const int nindex=-1;
  59
  60 /* === P R O C E D U R E S ================================================= */
  61
  62 /* === M E T H O D S ======================================================= */
  63
  64 Action::LayerMove::LayerMove():
  65         new_index(0xdeadbeef)
  66 {
  67 }
  68
  69 Action::ParamVocab
  70 Action::LayerMove::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 moved"))
  77         );
  78
  79         ret.push_back(ParamDesc("new_index",Param::TYPE_INTEGER)
  80                 .set_local_name(_("New Index"))
  81                 .set_desc(_("Where the layer is to be moved to"))
  82         );
  83
  84         ret.push_back(ParamDesc("dest_canvas",Param::TYPE_CANVAS)
  85                 .set_local_name(_("Destination Canvas"))
  86                 .set_desc(_("The canvas the layer is to be moved to"))
  87                 .set_optional()
  88         );
  89
  90         return ret;
  91 }
  92
  93 bool
  94 Action::LayerMove::is_candidate(const ParamList &x)
  95 {
  96         return candidate_check(get_param_vocab(),x);
  97 }
  98
  99 bool
 100 Action::LayerMove::set_param(const synfig::String& name, const Action::Param &param)
 101 {
 102         if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
 103         {
 104
 105                 layer=param.get_layer();
 106
 107                 return true;
 108         }
 109
 110         if(name=="new_index" && param.get_type()==Param::TYPE_INTEGER)
 111         {
 112                 new_index=param.get_integer();
 113
 114                 return true;
 115         }
 116
 117         if(name=="dest_canvas" && param.get_type()==Param::TYPE_CANVAS)
 118         {
 119                 dest_canvas=param.get_canvas();
 120
 121                 return true;
 122         }
 123
 124         return Action::CanvasSpecific::set_param(name,param);
 125 }
 126
 127 bool
 128 Action::LayerMove::is_ready()const
 129 {
 130         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 131         if(!layer || (unsigned)new_index==0xdeadbeef)
 132                 return false;
 133         return Action::CanvasSpecific::is_ready();
 134 }
 135
 136 void
 137 Action::LayerMove::perform()
 138 {
 139         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 140
 141         Canvas::Handle subcanvas(layer->get_canvas());
 142         src_canvas=subcanvas;
 143         if(!dest_canvas)
 144                 dest_canvas=subcanvas;
 145
 146         // Find the iterator for the layer
 147         Canvas::iterator iter=find(src_canvas->begin(),src_canvas->end(),layer);
 148
 149         // If we couldn't find the layer in the canvas, then bail
 150         if(*iter!=layer)
 151                 throw Error(_("This layer doesn't exist anymore."));
 152
 153         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 154
 155         // If the subcanvas isn't the same as the canvas,
 156         // then it had better be an inline canvas. If not,
 157         // bail
 158         //if(get_canvas()!=subcanvas && !subcanvas->is_inline())
 159         if(get_canvas()->get_root()!=dest_canvas->get_root() || get_canvas()->get_root()!=src_canvas->get_root())
 160                 throw Error(_("You cannot directly move layers across compositions"));
 161
 162         old_index=iter-src_canvas->begin();
 163         int depth;
 164
 165         if(new_index<0)
 166                 depth=dest_canvas->size()+new_index+1;
 167         else
 168                 depth=new_index;
 169
 170         set_dirty(layer->active());
 171
 172         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 173
 174         // If we were to move it to where it is
 175         if(old_index==depth && src_canvas==dest_canvas)
 176                 return;
 177
 178         if(depth>dest_canvas->size())
 179                 depth=dest_canvas->size();
 180         if(depth<0)
 181                 depth=0;
 182
 183         src_canvas->erase(iter);
 184
 185         dest_canvas->insert(dest_canvas->begin()+depth,layer);
 186         layer->set_canvas(dest_canvas);
 187
 188         layer->changed();
 189         dest_canvas->changed(); if(dest_canvas!=src_canvas) src_canvas->changed();
 190
 191         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 192
 193         if(get_canvas_interface())
 194         {
 195                 if(src_canvas==dest_canvas)
 196                 {
 197                         if(new_index==old_index-1)      // Raise
 198                                 get_canvas_interface()->signal_layer_raised()(layer);
 199                         else if(new_index==old_index+1) // Lower
 200                                 get_canvas_interface()->signal_layer_lowered()(layer);
 201                         else            // Moved
 202                         {
 203                                 get_canvas_interface()->signal_layer_moved()(layer,depth,dest_canvas);
 204                         }
 205                 }
 206                 else
 207                 {
 208                         get_canvas_interface()->signal_layer_moved()(layer,depth,dest_canvas);
 209                 }
 210         }
 211         else synfig::warning("CanvasInterface not set on action");
 212
 213         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 214 }
 215
 216 void
 217 Action::LayerMove::undo()
 218 {
 219         // Find the iterator for the layer
 220         Canvas::iterator iter=find(dest_canvas->begin(),dest_canvas->end(),layer);
 221
 222         // If we couldn't find the layer in the canvas, then bail
 223         if(*iter!=layer || (get_canvas()!=dest_canvas && !dest_canvas->is_inline()))
 224                 throw Error(_("This layer doesn't exist anymore."));
 225
 226         // If we were to move it to where it is
 227         if(old_index==new_index && src_canvas==dest_canvas)
 228                 return;
 229
 230         // Mark ourselves as dirty if necessary
 231         set_dirty(layer->active());
 232
 233         dest_canvas->erase(iter);
 234
 235         src_canvas->insert(src_canvas->begin()+old_index,layer);
 236         layer->set_canvas(src_canvas);
 237
 238         layer->changed();
 239         dest_canvas->changed(); if(dest_canvas!=src_canvas) src_canvas->changed();
 240
 241         // Execute any signals
 242         if(get_canvas_interface())
 243         {
 244                 if(src_canvas==dest_canvas)
 245                 {
 246                         if(new_index==old_index+1)      // Raise
 247                                 get_canvas_interface()->signal_layer_raised()(layer);
 248                         else if(new_index==old_index-1) // Lower
 249                                 get_canvas_interface()->signal_layer_lowered()(layer);
 250                         else            // Moved
 251                         {
 252                         get_canvas_interface()->signal_layer_moved()(layer,old_index,src_canvas);
 253                         }
 254                 }
 255                 else
 256                 {
 257                         get_canvas_interface()->signal_layer_moved()(layer,old_index,src_canvas);
 258                         //get_canvas_interface()->signal_layer_removed()(layer);
 259                         //get_canvas_interface()->signal_layer_inserted()(layer,old_index);
 260                 }
 261         }
 262         else synfig::warning("CanvasInterface not set on action");
 263 }