ardour/livetrax
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make Selection::set (TrackViewList*) more efficient and emit less PI::Change signals

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This commit is contained in:
Paul Davis 2017-02-26 18:19:50 +01:00
parent e653da32c0
commit 5456fd5717
1 changed files with 18 additions and 35 deletions
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53
gtk2_ardour/selection.cc
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@ -830,46 +830,29 @@ Selection::set (const TrackViewList& track_list)
{
clear_objects(); //enforce object/range exclusivity
PresentationInfo::ChangeSuspender cs;
if (!tracks.empty()) {
TrackViewList to_be_added;
TrackViewList to_be_removed;
/* cannot use set<T>::operator== (set<T> const &) here, because
* apparently the ordering used within 2 sets is not
* necessarily the same.
*/
if (tracks.size() == track_list.size()) {
bool missing = false;
for (TrackViewList::const_iterator x = track_list.begin(); x != track_list.end(); ++x) {
if (dynamic_cast<VCATimeAxisView*> (*x)) {
continue;
}
if (find (tracks.begin(), tracks.end(), *x) == tracks.end()) {
missing = true;
}
}
if (!missing) {
/* already same selection: nothing to do */
return;
}
for (TrackViewList::const_iterator x = tracks.begin(); x != tracks.end(); ++x) {
if (find (track_list.begin(), track_list.end(), *x) == track_list.end()) {
to_be_removed.push_back (*x);
}
/* argument is different from existing selection */
for (TrackViewList::iterator x = tracks.begin(); x != tracks.end(); ++x) {
if (dynamic_cast<VCATimeAxisView*> (*x)) {
continue;
}
(*x)->set_selected (false);
}
tracks.clear ();
}
add (track_list);
for (TrackViewList::const_iterator x = track_list.begin(); x != track_list.end(); ++x) {
if (dynamic_cast<VCATimeAxisView*> (*x)) {
continue;
}
if (find (tracks.begin(), tracks.end(), *x) == tracks.end()) {
to_be_added.push_back (*x);
}
}
PresentationInfo::ChangeSuspender cs;
remove (to_be_removed);
add (to_be_added);
}
void