synfig-studio/src/synfigapp/actions/keyframesetdelta.cpp

   1 /* === S Y N F I G ========================================================= */
   2 /*!     \file keyframesetdelta.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 "keyframesetdelta.h"
  33 #include <synfigapp/canvasinterface.h>
  34 #include <synfig/valuenode_dynamiclist.h>
  35 #include <synfig/valuenode_animated.h>
  36 #include "activepointsetsmart.h"
  37 #include "waypointsetsmart.h"
  38
  39 #include <synfigapp/general.h>
  40
  41 #endif
  42
  43 using namespace std;
  44 using namespace etl;
  45 using namespace synfig;
  46 using namespace synfigapp;
  47 using namespace Action;
  48
  49 /* === M A C R O S ========================================================= */
  50
  51 ACTION_INIT(Action::KeyframeSetDelta);
  52 ACTION_SET_NAME(Action::KeyframeSetDelta,"KeyframeSetDelta");
  53 ACTION_SET_LOCAL_NAME(Action::KeyframeSetDelta,N_("Set Keyframe Delta"));
  54 ACTION_SET_TASK(Action::KeyframeSetDelta,"set");
  55 ACTION_SET_CATEGORY(Action::KeyframeSetDelta,Action::CATEGORY_KEYFRAME|Action::CATEGORY_HIDDEN);
  56 ACTION_SET_PRIORITY(Action::KeyframeSetDelta,0);
  57 ACTION_SET_VERSION(Action::KeyframeSetDelta,"0.0");
  58 ACTION_SET_CVS_ID(Action::KeyframeSetDelta,"$Id$");
  59
  60 /* === G L O B A L S ======================================================= */
  61
  62 /* === P R O C E D U R E S ================================================= */
  63
  64 /* === M E T H O D S ======================================================= */
  65
  66 Action::KeyframeSetDelta::KeyframeSetDelta():
  67         delta(0)
  68 {
  69         keyframe.set_time(Time::end());
  70         set_dirty(false);
  71 }
  72
  73 Action::ParamVocab
  74 Action::KeyframeSetDelta::get_param_vocab()
  75 {
  76         ParamVocab ret(Action::CanvasSpecific::get_param_vocab());
  77
  78         ret.push_back(ParamDesc("keyframe",Param::TYPE_KEYFRAME)
  79                 .set_local_name(_("Keyframe"))
  80         );
  81         ret.push_back(ParamDesc("delta",Param::TYPE_KEYFRAME)
  82                 .set_local_name(_("Delta"))
  83         );
  84
  85         return ret;
  86 }
  87
  88 bool
  89 Action::KeyframeSetDelta::is_candidate(const ParamList &x)
  90 {
  91         return candidate_check(get_param_vocab(),x);
  92 }
  93
  94 bool
  95 Action::KeyframeSetDelta::set_param(const synfig::String& name, const Action::Param &param)
  96 {
  97         if(name=="keyframe" && param.get_type()==Param::TYPE_KEYFRAME)
  98         {
  99                 keyframe=param.get_keyframe();
 100                 return true;
 101         }
 102         if(name=="delta" && param.get_type()==Param::TYPE_TIME)
 103         {
 104                 delta=param.get_time();
 105                 return true;
 106         }
 107
 108         return Action::CanvasSpecific::set_param(name,param);
 109 }
 110
 111 bool
 112 Action::KeyframeSetDelta::is_ready()const
 113 {
 114         if(keyframe.get_time()==Time::end())
 115                 return false;
 116         return Action::CanvasSpecific::is_ready();
 117 }
 118
 119 void
 120 Action::KeyframeSetDelta::prepare()
 121 {
 122         clear();
 123         value_desc_list.clear();
 124         get_canvas_interface()->find_important_value_descs(value_desc_list);
 125
 126
 127         Time time(get_canvas()->keyframe_list().find(keyframe)->get_time());
 128
 129         std::vector<synfigapp::ValueDesc>::iterator iter;
 130         for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)
 131         {
 132                 ValueDesc& value_desc(*iter);
 133                 ValueNode_Animated::Handle value_node(
 134                         ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node())
 135                 );
 136
 137                 if(!value_node)
 138                         continue;
 139
 140                 try{
 141                         value_node->find(time);
 142                         // if we got to this point, then we know that
 143                         // a waypoint already exists here and we don't
 144                         // need to add a new one.
 145                         continue;
 146                 }catch(...)
 147                 {
 148                         // Make sure there is something previous
 149                         try{
 150                                 value_node->find_prev(time);
 151                         }catch(...)
 152                         {
 153                                 continue;
 154                         }
 155                 }
 156                 Action::Handle action(Action::create("WaypointSetSmart"));
 157
 158                 action->set_param("canvas",get_canvas());
 159                 action->set_param("canvas_interface",get_canvas_interface());
 160                 action->set_param("value_node",ValueNode::Handle::cast_static(value_node));
 161
 162                 action->set_param("time",time);
 163
 164                 assert(action->is_ready());
 165                 if(!action->is_ready())
 166                         throw Error(Error::TYPE_NOTREADY);
 167
 168                 add_action(action);
 169         }
 170 }
 171
 172 void
 173 Action::KeyframeSetDelta::perform()
 174 {
 175         if(!delta)
 176                 return;
 177         Action::Super::perform();
 178
 179 //      Time location(keyframe.get_time());
 180         Time location(get_canvas()->keyframe_list().find(keyframe)->get_time());
 181 //      This line sets delta to 0s regardless to any previous value of delta.
 182 //      I think it was here for symmetry to the undo() operation.
 183 //      It was causing that the Set delta operation was faulty. Now works!
 184 //      Time delta(delta);
 185
 186         get_canvas()->keyframe_list().insert_time(location,delta);
 187
 188         std::vector<synfigapp::ValueDesc>::iterator iter;
 189         for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)
 190         {
 191                 ValueDesc& value_desc(*iter);
 192                 if(!value_desc.is_value_node())
 193                         continue;
 194                 ValueNode_Animated::Handle animated(
 195                         ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node())
 196                 );
 197                 if(animated)
 198                 {
 199                         animated->insert_time(location,delta);
 200                         continue;
 201                 }
 202                 ValueNode_DynamicList::Handle dyn_list(
 203                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node())
 204                 );
 205                 if(dyn_list)
 206                 {
 207                         dyn_list->insert_time(location,delta);
 208                         continue;
 209                 }
 210         }
 211
 212         // Signal that something has changed
 213         if(get_canvas_interface())
 214         {
 215                 get_canvas_interface()->signal_keyframe_changed()(keyframe);
 216         }
 217         else synfig::warning("CanvasInterface not set on action");
 218 }
 219
 220 void
 221 Action::KeyframeSetDelta::undo()
 222 {
 223         if(!delta)
 224                 return;
 225
 226 //      Time location(keyframe.get_time());
 227         Time location(get_canvas()->keyframe_list().find(keyframe)->get_time());
 228         Time delta(-delta);
 229
 230         get_canvas()->keyframe_list().insert_time(location,delta);
 231
 232         std::vector<synfigapp::ValueDesc>::iterator iter;
 233         for(iter=value_desc_list.begin();iter!=value_desc_list.end();++iter)
 234         {
 235                 ValueDesc& value_desc(*iter);
 236                 if(!value_desc.is_value_node())
 237                         continue;
 238                 ValueNode_Animated::Handle animated(
 239                         ValueNode_Animated::Handle::cast_dynamic(value_desc.get_value_node())
 240                 );
 241                 if(animated)
 242                 {
 243                         animated->insert_time(location,delta);
 244                         continue;
 245                 }
 246                 ValueNode_DynamicList::Handle dyn_list(
 247                         ValueNode_DynamicList::Handle::cast_dynamic(value_desc.get_value_node())
 248                 );
 249                 if(dyn_list)
 250                 {
 251                         dyn_list->insert_time(location,delta);
 252                         continue;
 253                 }
 254         }
 255
 256         Action::Super::undo();
 257
 258         // Signal that something has changed
 259         if(get_canvas_interface())
 260         {
 261                 get_canvas_interface()->signal_keyframe_changed()(keyframe);
 262         }
 263         else synfig::warning("CanvasInterface not set on action");
 264 }