source/designer/selection.cpp

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