source/designer/selection.cpp

   1 /* $Id$
   2
   3 This file is part of the MSP Märklin suite
   4 Copyright © 2006-2008 Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <algorithm>
   9 #include "selection.h"
  10
  11 using namespace std;
  12 using namespace Marklin;
  13 using namespace Msp;
  14
  15 Track *Selection::get_track() const
  16 {
  17         if(tracks.empty())
  18                 return 0;
  19         else
  20                 return *tracks.begin();
  21 }
  22
  23 void Selection::clear()
  24 {
  25         tracks.clear();
  26         signal_changed.emit();
  27 }
  28
  29 void Selection::add_track(Track *t)
  30 {
  31         if(tracks.insert(t).second)
  32                 signal_changed.emit();
  33 }
  34
  35 void Selection::remove_track(Track *t)
  36 {
  37         if(tracks.erase(t))
  38                 signal_changed.emit();
  39 }
  40
  41 void Selection::toggle_track(Track *t)
  42 {
  43         if(!tracks.erase(t))
  44                 tracks.insert(t);
  45
  46         signal_changed.emit();
  47 }
  48
  49 void Selection::select_more()
  50 {
  51         set<Track *> new_tracks;
  52         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  53         {
  54                 const vector<Track *> &links = (*i)->get_links();
  55                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
  56                         if(*j)
  57                                 new_tracks.insert(*j);
  58         }
  59
  60         bool changed = false;
  61         for(set<Track *>::iterator i=new_tracks.begin(); i!=new_tracks.end(); ++i)
  62                 if(tracks.insert(*i).second)
  63                         changed = true;
  64
  65         if(changed)
  66                 signal_changed.emit();
  67 }
  68
  69 void Selection::select_linked()
  70 {
  71         bool changed = false;
  72         list<Track *> queue(tracks.begin(), tracks.end());
  73         while(!queue.empty())
  74         {
  75                 Track *track = queue.front();
  76                 queue.erase(queue.begin());
  77
  78                 const vector<Track *> &links = track->get_links();
  79                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
  80                         if(*j && tracks.insert(*j).second)
  81                         {
  82                                 queue.push_back(*j);
  83                                 changed = true;
  84                         }
  85         }
  86         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  87         {
  88                 const vector<Track *> &links = (*i)->get_links();
  89                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
  90                         if(*j && tracks.insert(*j).second)
  91                                 changed = true;
  92         }
  93
  94         if(changed)
  95                 signal_changed.emit();
  96 }