selection.cpp

   1 /* $Id$
   2
   3 This file is part of R²C²
   4 Copyright © 2006-2008 Mikkosoft Productions, Mikko Rasa
   5 Distributed under the GPL
   6 */
   7
   8 #include <algorithm>
   9 #include "libr2c2/block.h"
  10 #include "selection.h"
  11
  12 using namespace std;
  13 using namespace R2C2;
  14 using namespace Msp;
  15
  16 Track *Selection::get_track() const
  17 {
  18         if(tracks.empty())
  19                 return 0;
  20         else
  21                 return *tracks.begin();
  22 }
  23
  24 void Selection::clear()
  25 {
  26         tracks.clear();
  27         signal_changed.emit();
  28 }
  29
  30 void Selection::add_track(Track *t)
  31 {
  32         if(tracks.insert(t).second)
  33                 signal_changed.emit();
  34 }
  35
  36 void Selection::remove_track(Track *t)
  37 {
  38         if(tracks.erase(t))
  39                 signal_changed.emit();
  40 }
  41
  42 void Selection::toggle_track(Track *t)
  43 {
  44         if(!tracks.erase(t))
  45                 tracks.insert(t);
  46
  47         signal_changed.emit();
  48 }
  49
  50 void Selection::select_more()
  51 {
  52         set<Track *> new_tracks;
  53         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  54         {
  55                 const vector<Track *> &links = (*i)->get_links();
  56                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
  57                         if(*j)
  58                                 new_tracks.insert(*j);
  59         }
  60
  61         bool changed = false;
  62         for(set<Track *>::iterator i=new_tracks.begin(); i!=new_tracks.end(); ++i)
  63                 if(tracks.insert(*i).second)
  64                         changed = true;
  65
  66         if(changed)
  67                 signal_changed.emit();
  68 }
  69
  70 void Selection::select_linked()
  71 {
  72         bool changed = false;
  73         list<Track *> queue(tracks.begin(), tracks.end());
  74         while(!queue.empty())
  75         {
  76                 Track *track = queue.front();
  77                 queue.erase(queue.begin());
  78
  79                 const vector<Track *> &links = track->get_links();
  80                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
  81                         if(*j && tracks.insert(*j).second)
  82                         {
  83                                 queue.push_back(*j);
  84                                 changed = true;
  85                         }
  86         }
  87         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
  88         {
  89                 const vector<Track *> &links = (*i)->get_links();
  90                 for(vector<Track *>::const_iterator j=links.begin(); j!=links.end(); ++j)
  91                         if(*j && tracks.insert(*j).second)
  92                                 changed = true;
  93         }
  94
  95         if(changed)
  96                 signal_changed.emit();
  97 }
  98
  99 void Selection::select_blocks()
 100 {
 101         bool changed = false;
 102         for(set<Track *>::iterator i=tracks.begin(); i!=tracks.end(); ++i)
 103         {
 104                 const set<Track *> &btracks = (*i)->get_block().get_tracks();
 105                 for(set<Track *>::iterator j=btracks.begin(); j!=btracks.end(); ++j)
 106                         if(!tracks.count(*j))
 107                         {
 108                                 tracks.insert(*j);
 109                                 changed = true;
 110                         }
 111         }
 112
 113         if(changed)
 114                 signal_changed.emit();
 115 }