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 #endif
  36
  37 using namespace std;
  38 using namespace etl;
  39 using namespace synfig;
  40 using namespace synfigapp;
  41 using namespace Action;
  42
  43 /* === M A C R O S ========================================================= */
  44
  45 ACTION_INIT(Action::LayerMove);
  46 ACTION_SET_NAME(Action::LayerMove,"layer_move");
  47 ACTION_SET_LOCAL_NAME(Action::LayerMove,_("Move Layer"));
  48 ACTION_SET_TASK(Action::LayerMove,"move");
  49 ACTION_SET_CATEGORY(Action::LayerMove,Action::CATEGORY_LAYER);
  50 ACTION_SET_PRIORITY(Action::LayerMove,0);
  51 ACTION_SET_VERSION(Action::LayerMove,"0.0");
  52 ACTION_SET_CVS_ID(Action::LayerMove,"$Id$");
  53
  54 /* === G L O B A L S ======================================================= */
  55
  56 static const int nindex=-1;
  57
  58 /* === P R O C E D U R E S ================================================= */
  59
  60 /* === M E T H O D S ======================================================= */
  61
  62 Action::LayerMove::LayerMove():
  63         new_index(0xdeadbeef)
  64 {
  65 }
  66
  67 Action::ParamVocab
  68 Action::LayerMove::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 moved"))
  75         );
  76
  77         ret.push_back(ParamDesc("new_index",Param::TYPE_INTEGER)
  78                 .set_local_name(_("New Index"))
  79                 .set_desc(_("Where the layer is to be moved to"))
  80         );
  81
  82         ret.push_back(ParamDesc("dest_canvas",Param::TYPE_CANVAS)
  83                 .set_local_name(_("Destination Canvas"))
  84                 .set_desc(_("The canvas the layer is to be moved to"))
  85                 .set_optional()
  86         );
  87
  88         return ret;
  89 }
  90
  91 bool
  92 Action::LayerMove::is_candidate(const ParamList &x)
  93 {
  94         return candidate_check(get_param_vocab(),x);
  95 }
  96
  97 bool
  98 Action::LayerMove::set_param(const synfig::String& name, const Action::Param &param)
  99 {
 100         if(name=="layer" && param.get_type()==Param::TYPE_LAYER)
 101         {
 102
 103                 layer=param.get_layer();
 104
 105                 return true;
 106         }
 107
 108         if(name=="new_index" && param.get_type()==Param::TYPE_INTEGER)
 109         {
 110                 new_index=param.get_integer();
 111
 112                 return true;
 113         }
 114
 115         if(name=="dest_canvas" && param.get_type()==Param::TYPE_CANVAS)
 116         {
 117                 dest_canvas=param.get_canvas();
 118
 119                 return true;
 120         }
 121
 122         return Action::CanvasSpecific::set_param(name,param);
 123 }
 124
 125 bool
 126 Action::LayerMove::is_ready()const
 127 {
 128         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 129         if(!layer || (unsigned)new_index==0xdeadbeef)
 130                 return false;
 131         return Action::CanvasSpecific::is_ready();
 132 }
 133
 134 void
 135 Action::LayerMove::perform()
 136 {
 137         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 138
 139         Canvas::Handle subcanvas(layer->get_canvas());
 140         src_canvas=subcanvas;
 141         if(!dest_canvas)
 142                 dest_canvas=subcanvas;
 143
 144         // Find the iterator for the layer
 145         Canvas::iterator iter=find(src_canvas->begin(),src_canvas->end(),layer);
 146
 147         // If we couldn't find the layer in the canvas, then bail
 148         if(*iter!=layer)
 149                 throw Error(_("This layer doesn't exist anymore."));
 150
 151         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 152
 153         // If the subcanvas isn't the same as the canvas,
 154         // then it had better be an inline canvas. If not,
 155         // bail
 156         //if(get_canvas()!=subcanvas && !subcanvas->is_inline())
 157         if(get_canvas()->get_root()!=dest_canvas->get_root() || get_canvas()->get_root()!=src_canvas->get_root())
 158                 throw Error(_("You cannot directly move layers across compositions"));
 159
 160         old_index=iter-src_canvas->begin();
 161         int depth;
 162
 163         if(new_index<0)
 164                 depth=dest_canvas->size()+new_index+1;
 165         else
 166                 depth=new_index;
 167
 168         set_dirty(layer->active());
 169
 170         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 171
 172         // If we were to move it to where it is
 173         if(old_index==depth && src_canvas==dest_canvas)
 174                 return;
 175
 176         if(depth>dest_canvas->size())
 177                 depth=dest_canvas->size();
 178         if(depth<0)
 179                 depth=0;
 180
 181         src_canvas->erase(iter);
 182
 183         dest_canvas->insert(dest_canvas->begin()+depth,layer);
 184         layer->set_canvas(dest_canvas);
 185
 186         layer->changed();
 187         dest_canvas->changed(); if(dest_canvas!=src_canvas) src_canvas->changed();
 188
 189         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 190
 191         if(get_canvas_interface())
 192         {
 193                 if(src_canvas==dest_canvas)
 194                 {
 195                         if(new_index==old_index-1)      // Raise
 196                                 get_canvas_interface()->signal_layer_raised()(layer);
 197                         else if(new_index==old_index+1) // Lower
 198                                 get_canvas_interface()->signal_layer_lowered()(layer);
 199                         else            // Moved
 200                         {
 201                                 get_canvas_interface()->signal_layer_moved()(layer,depth,dest_canvas);
 202                         }
 203                 }
 204                 else
 205                 {
 206                         get_canvas_interface()->signal_layer_moved()(layer,depth,dest_canvas);
 207                 }
 208         }
 209         else synfig::warning("CanvasInterface not set on action");
 210
 211         synfig::info(__FILE__":%d: layer->count()=%d",__LINE__,layer.count());
 212 }
 213
 214 void
 215 Action::LayerMove::undo()
 216 {
 217         // Find the iterator for the layer
 218         Canvas::iterator iter=find(dest_canvas->begin(),dest_canvas->end(),layer);
 219
 220         // If we couldn't find the layer in the canvas, then bail
 221         if(*iter!=layer || (get_canvas()!=dest_canvas && !dest_canvas->is_inline()))
 222                 throw Error(_("This layer doesn't exist anymore."));
 223
 224         // If we were to move it to where it is
 225         if(old_index==new_index && src_canvas==dest_canvas)
 226                 return;
 227
 228         // Mark ourselves as dirty if necessary
 229         set_dirty(layer->active());
 230
 231         dest_canvas->erase(iter);
 232
 233         src_canvas->insert(src_canvas->begin()+old_index,layer);
 234         layer->set_canvas(src_canvas);
 235
 236         layer->changed();
 237         dest_canvas->changed(); if(dest_canvas!=src_canvas) src_canvas->changed();
 238
 239         // Execute any signals
 240         if(get_canvas_interface())
 241         {
 242                 if(src_canvas==dest_canvas)
 243                 {
 244                         if(new_index==old_index+1)      // Raise
 245                                 get_canvas_interface()->signal_layer_raised()(layer);
 246                         else if(new_index==old_index-1) // Lower
 247                                 get_canvas_interface()->signal_layer_lowered()(layer);
 248                         else            // Moved
 249                         {
 250                         get_canvas_interface()->signal_layer_moved()(layer,old_index,src_canvas);
 251                         }
 252                 }
 253                 else
 254                 {
 255                         get_canvas_interface()->signal_layer_moved()(layer,old_index,src_canvas);
 256                         //get_canvas_interface()->signal_layer_removed()(layer);
 257                         //get_canvas_interface()->signal_layer_inserted()(layer,old_index);
 258                 }
 259         }
 260         else synfig::warning("CanvasInterface not set on action");
 261 }