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

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file activepointremove.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 "activepointremove.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::ActivepointRemove);
  48 ACTION_SET_NAME(Action::ActivepointRemove,"activepoint_remove");
  49 ACTION_SET_LOCAL_NAME(Action::ActivepointRemove,N_("Remove Activepoint"));
  50 ACTION_SET_TASK(Action::ActivepointRemove,"remove");
  51 ACTION_SET_CATEGORY(Action::ActivepointRemove,Action::CATEGORY_ACTIVEPOINT);
  52 ACTION_SET_PRIORITY(Action::ActivepointRemove,0);
  53 ACTION_SET_VERSION(Action::ActivepointRemove,"0.0");
  54 ACTION_SET_CVS_ID(Action::ActivepointRemove,"$Id$");
  55
  56 /* === G L O B A L S ======================================================= */
  57
  58 /* === P R O C E D U R E S ================================================= */
  59
  60 /* === M E T H O D S ======================================================= */
  61
  62 Action::ActivepointRemove::ActivepointRemove()
  63 {
  64         activepoint.set_time(Time::begin()-1);
  65         set_dirty(true);
  66 }
  67
  68 Action::ParamVocab
  69 Action::ActivepointRemove::get_param_vocab()
  70 {
  71         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  72
  73         ret.push_back(ParamDesc("value_desc",Param::TYPE_VALUEDESC)
  74                 .set_local_name(_("ValueDesc"))
  75         );
  76
  77         ret.push_back(ParamDesc("activepoint",Param::TYPE_ACTIVEPOINT)
  78                 .set_local_name(_("Activepoint"))
  79                 .set_desc(_("Activepoint to be changed"))
  80         );
  81
  82         return ret;
  83 }
  84
  85 bool
  86 Action::ActivepointRemove::is_candidate(const ParamList &x)
  87 {
  88         if (!candidate_check(get_param_vocab(),x))
  89                 return false;
  90
  91         ValueDesc value_desc(x.find("value_desc")->second.get_value_desc());
  92
  93         return (value_desc.parent_is_value_node() &&
  94                         // We need a dynamic list.
  95                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_parent_value_node()));
  96 }
  97
  98 bool
  99 Action::ActivepointRemove::set_param(const synfig::String& name, const Action::Param &param)
 100 {
 101         if(name=="value_desc" && param.get_type()==Param::TYPE_VALUEDESC)
 102         {
 103                 ValueDesc value_desc(param.get_value_desc());
 104
 105                 if(!value_desc.parent_is_value_node())
 106                         return false;
 107
 108                 value_node=ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_parent_value_node());
 109
 110                 if(!value_node)
 111                         return false;
 112
 113                 index=value_desc.get_index();
 114
 115                 return true;
 116         }
 117         if(name=="activepoint" && param.get_type()==Param::TYPE_ACTIVEPOINT)
 118         {
 119                 activepoint=param.get_activepoint();
 120
 121                 return true;
 122         }
 123
 124         return Action::CanvasSpecific::set_param(name,param);
 125 }
 126
 127 bool
 128 Action::ActivepointRemove::is_ready()const
 129 {
 130         if(!value_node || activepoint.get_time()==(Time::begin()-1))
 131                 return false;
 132         return Action::CanvasSpecific::is_ready();
 133 }
 134
 135 void
 136 Action::ActivepointRemove::perform()
 137 {
 138         ValueNode_DynamicList::ListEntry::ActivepointList::iterator iter;
 139
 140         try { iter=value_node->list[index].find(activepoint); }
 141         catch(synfig::Exception::NotFound)
 142         {
 143                 throw Error(_("Unable to find activepoint"));
 144         }
 145
 146         value_node->list[index].erase(activepoint);
 147         value_node->changed();
 148
 149         /*
 150         // Signal that a layer has been inserted
 151         if(get_canvas_interface())
 152         {
 153                 get_canvas_interface()->signal_value_node_changed()(value_node);
 154         }
 155         else synfig::warning("CanvasInterface not set on action");
 156         */
 157 }
 158
 159 void
 160 Action::ActivepointRemove::undo()
 161 {
 162         try { value_node->list[index].find(activepoint.get_time()); throw Error(_("A Activepoint already exists at this point in time"));}
 163         catch(synfig::Exception::NotFound) { }
 164
 165         try { if(value_node->list[index].find(activepoint)!=value_node->list[index].timing_info.end()) throw Error(_("This activepoint is already in the ValueNode"));}
 166         catch(synfig::Exception::NotFound) { }
 167
 168         value_node->list[index].add(activepoint);
 169         value_node->changed();
 170         /*
 171         // Signal that a layer has been inserted
 172         if(get_canvas_interface())
 173         {
 174                 get_canvas_interface()->signal_value_node_changed()(value_node);
 175         }
 176         else synfig::warning("CanvasInterface not set on action");
 177         */
 178 }