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Code Issues Releases Wiki Activity

Fix up label behavior, clean up reverse effect

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This commit is contained in:
BusinessmanProgrammerSteve 2010-01-29 21:33:40 +00:00
parent 7945e8723d
commit 10892c33e5
1 changed files with 13 additions and 38 deletions
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51
src/effects/Reverse.cpp
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@ -36,25 +36,20 @@ bool EffectReverse::Process()
//Track::All is needed because Reverse should move the labels too
this->CopyInputTracks(Track::All); // Set up mOutputTracks.
bool bGoodResult = true;
Track *lastGroup = NULL; // First track of group of last acted-on WaveTrack
TrackGroupIterator gIt(mOutputTracks);
TrackListIterator iter(mOutputTracks);
Track *t = iter.First();
int count = 0;
double lt0 = -2.0; // -2.0 = not initialized yet; -1.0 = is not possible to reverse labels
double lt1 = -2.0;
while (t) {
if (t->GetKind() == Track::Wave) {
WaveTrack *track = (WaveTrack*)t;
// Since leading and trailing whitespaces should also be considered for reversal
// t0 and t1 must always be equal to mT0 and mT1
double t0 = mT0;
double t1 = mT1;
if (track->GetSelected()) {
if (t1 > t0) {
sampleCount start = track->TimeToLongSamples(t0);
sampleCount end = track->TimeToLongSamples(t1);
if (mT1 > mT0) {
sampleCount start = track->TimeToLongSamples(mT0);
sampleCount end = track->TimeToLongSamples(mT1);
sampleCount len = (sampleCount)(end - start);
if (!ProcessOneWave(count, track, start, len))
@ -62,39 +57,19 @@ bool EffectReverse::Process()
bGoodResult = false;
break;
}
//if this is the first selected track in the group we can define the label
//region to be reversed without any more verifications
if (lt0 == -2.0) {
lt0 = t0;
lt1 = t1;
}
//track has not the same selection result (after checking start and end of the track as the first track)
//it's not possible to know how to reverse the label in this situation.
else if ((lt0 != t0) || (lt1 != t1)) {
lt0 = -1.0;
lt1 = -1.0;
}
}
}
//if the track is not selected but has no content inside the selected region, there is no problem.
//otherwise we should not change the labels.
else if (t1 > t0) {
lt0 = -1.0;
lt1 = -1.0;
}
// Update grouping variables
lastGroup = gIt.First(t);
}
}
else if (t->GetKind() == Track::Label) {
AudacityProject *p = GetActiveProject();
//if we can reverse the label
if (lt0 != -1.0 && p && p->IsSticky()) {
if ((p && p->IsSticky() && gIt.First(t) == lastGroup) ||
t->GetSelected())
{
LabelTrack *track = (LabelTrack*)t;
track->ChangeLabelsOnReverse(lt0, lt1);
}
//otherwise we set the region to the not initialized state -2.0 to begin the process in the next group
else {
lt0 = -2.0;
lt1 = -2.0;
track->ChangeLabelsOnReverse(mT0, mT1);
}
}
t = iter.Next();