mirror of
https://github.com/cookiengineer/audacity
synced 2025-11-19 07:34:10 +01:00
Use TypeSwitch and track_cast
This commit is contained in:
Paul Licameli
@@ -192,9 +192,8 @@ void WaveTrack::Reinit(const WaveTrack &orig)
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void WaveTrack::Merge(const Track &orig)
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{
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if (orig.GetKind() == Wave)
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{
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const WaveTrack &wt = static_cast<const WaveTrack&>(orig);
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orig.TypeSwitch( [&](const WaveTrack *pwt) {
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const WaveTrack &wt = *pwt;
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mDisplay = wt.mDisplay;
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mGain = wt.mGain;
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mPan = wt.mPan;
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@@ -204,7 +203,7 @@ void WaveTrack::Merge(const Track &orig)
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? std::make_unique<SpectrogramSettings>(*wt.mpSpectrumSettings) : nullptr);
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SetWaveformSettings
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(wt.mpWaveformSettings ? std::make_unique<WaveformSettings>(*wt.mpWaveformSettings) : nullptr);
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}
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});
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PlayableTrack::Merge(orig);
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}
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@@ -1210,159 +1209,158 @@ void WaveTrack::Paste(double t0, const Track *src)
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// WEAK-GUARANTEE
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{
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bool editClipCanMove = gPrefs->GetEditClipsCanMove();
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if( src == NULL )
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// THROW_INCONSISTENCY_EXCEPTION; // ?
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return;
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if (src->GetKind() != Track::Wave)
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// THROW_INCONSISTENCY_EXCEPTION; // ?
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return;
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bool bOk = src && src->TypeSwitch< bool >( [&](const WaveTrack *other) {
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const WaveTrack* other = static_cast<const WaveTrack*>(src);
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//
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// Pasting is a bit complicated, because with the existence of multiclip mode,
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// we must guess the behaviour the user wants.
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//
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// Currently, two modes are implemented:
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//
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// - If a single clip should be pasted, and it should be pasted inside another
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// clip, no NEW clips are generated. The audio is simply inserted.
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// This resembles the old (pre-multiclip support) behaviour. However, if
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// the clip is pasted outside of any clip, a NEW clip is generated. This is
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// the only behaviour which is different to what was done before, but it
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// shouldn't confuse users too much.
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//
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// - If multiple clips should be pasted, or a single clip that does not fill
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// the duration of the pasted track, these are always pasted as single
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// clips, and the current clip is splitted, when necessary. This may seem
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// strange at first, but it probably is better than trying to auto-merge
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// anything. The user can still merge the clips by hand (which should be a
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// simple command reachable by a hotkey or single mouse click).
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//
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//
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// Pasting is a bit complicated, because with the existence of multiclip mode,
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// we must guess the behaviour the user wants.
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//
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// Currently, two modes are implemented:
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//
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// - If a single clip should be pasted, and it should be pasted inside another
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// clip, no NEW clips are generated. The audio is simply inserted.
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// This resembles the old (pre-multiclip support) behaviour. However, if
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// the clip is pasted outside of any clip, a NEW clip is generated. This is
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// the only behaviour which is different to what was done before, but it
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// shouldn't confuse users too much.
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//
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// - If multiple clips should be pasted, or a single clip that does not fill
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// the duration of the pasted track, these are always pasted as single
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// clips, and the current clip is splitted, when necessary. This may seem
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// strange at first, but it probably is better than trying to auto-merge
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// anything. The user can still merge the clips by hand (which should be a
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// simple command reachable by a hotkey or single mouse click).
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//
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if (other->GetNumClips() == 0)
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return true;
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if (other->GetNumClips() == 0)
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return;
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//wxPrintf("paste: we have at least one clip\n");
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//wxPrintf("paste: we have at least one clip\n");
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bool singleClipMode = (other->GetNumClips() == 1 &&
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other->GetStartTime() == 0.0);
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bool singleClipMode = (other->GetNumClips() == 1 &&
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other->GetStartTime() == 0.0);
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const double insertDuration = other->GetEndTime();
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if( insertDuration != 0 && insertDuration < 1.0/mRate )
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// PRL: I added this check to avoid violations of preconditions in other WaveClip and Sequence
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// methods, but allow the value 0 so I don't subvert the purpose of commit
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// 739422ba70ceb4be0bb1829b6feb0c5401de641e which causes append-recording always to make
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// a new clip.
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return true;
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const double insertDuration = other->GetEndTime();
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if( insertDuration != 0 && insertDuration < 1.0/mRate )
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// PRL: I added this check to avoid violations of preconditions in other WaveClip and Sequence
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// methods, but allow the value 0 so I don't subvert the purpose of commit
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// 739422ba70ceb4be0bb1829b6feb0c5401de641e which causes append-recording always to make
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// a new clip.
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return;
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//wxPrintf("Check if we need to make room for the pasted data\n");
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//wxPrintf("Check if we need to make room for the pasted data\n");
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// Make room for the pasted data
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if (editClipCanMove) {
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if (!singleClipMode) {
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// We need to insert multiple clips, so split the current clip and
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// move everything to the right, then try to paste again
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if (!IsEmpty(t0, GetEndTime())) {
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auto tmp = Cut(t0, GetEndTime()+1.0/mRate);
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Paste(t0 + insertDuration, tmp.get());
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}
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}
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else {
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// We only need to insert one single clip, so just move all clips
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// to the right of the paste point out of the way
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for (const auto &clip : mClips)
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{
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if (clip->GetStartTime() > t0-(1.0/mRate))
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clip->Offset(insertDuration);
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}
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}
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}
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if (singleClipMode)
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{
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// Single clip mode
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// wxPrintf("paste: checking for single clip mode!\n");
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WaveClip *insideClip = NULL;
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for (const auto &clip : mClips)
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{
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if (editClipCanMove)
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{
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if (clip->WithinClip(t0))
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{
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//wxPrintf("t0=%.6f: inside clip is %.6f ... %.6f\n",
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// t0, clip->GetStartTime(), clip->GetEndTime());
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insideClip = clip.get();
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break;
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// Make room for the pasted data
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if (editClipCanMove) {
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if (!singleClipMode) {
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// We need to insert multiple clips, so split the current clip and
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// move everything to the right, then try to paste again
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if (!IsEmpty(t0, GetEndTime())) {
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auto tmp = Cut(t0, GetEndTime()+1.0/mRate);
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Paste(t0 + insertDuration, tmp.get());
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}
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}
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else
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{
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// If clips are immovable we also allow prepending to clips
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if (clip->WithinClip(t0) ||
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TimeToLongSamples(t0) == clip->GetStartSample())
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{
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insideClip = clip.get();
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break;
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}
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}
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}
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if (insideClip)
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{
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// Exhibit traditional behaviour
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//wxPrintf("paste: traditional behaviour\n");
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if (!editClipCanMove)
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{
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// We did not move other clips out of the way already, so
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// check if we can paste without having to move other clips
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else {
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// We only need to insert one single clip, so just move all clips
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// to the right of the paste point out of the way
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for (const auto &clip : mClips)
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{
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if (clip->GetStartTime() > insideClip->GetStartTime() &&
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insideClip->GetEndTime() + insertDuration >
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clip->GetStartTime())
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// STRONG-GUARANTEE in case of this path
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// not that it matters.
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throw SimpleMessageBoxException{
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_("There is not enough room available to paste the selection")
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};
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if (clip->GetStartTime() > t0-(1.0/mRate))
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clip->Offset(insertDuration);
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}
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}
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}
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if (singleClipMode)
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{
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// Single clip mode
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// wxPrintf("paste: checking for single clip mode!\n");
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WaveClip *insideClip = NULL;
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for (const auto &clip : mClips)
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{
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if (editClipCanMove)
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{
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if (clip->WithinClip(t0))
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{
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//wxPrintf("t0=%.6f: inside clip is %.6f ... %.6f\n",
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// t0, clip->GetStartTime(), clip->GetEndTime());
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insideClip = clip.get();
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break;
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}
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}
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else
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{
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// If clips are immovable we also allow prepending to clips
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if (clip->WithinClip(t0) ||
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TimeToLongSamples(t0) == clip->GetStartSample())
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{
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insideClip = clip.get();
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break;
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}
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}
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}
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insideClip->Paste(t0, other->GetClipByIndex(0));
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return;
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if (insideClip)
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{
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// Exhibit traditional behaviour
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//wxPrintf("paste: traditional behaviour\n");
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if (!editClipCanMove)
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{
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// We did not move other clips out of the way already, so
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// check if we can paste without having to move other clips
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for (const auto &clip : mClips)
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{
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if (clip->GetStartTime() > insideClip->GetStartTime() &&
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insideClip->GetEndTime() + insertDuration >
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clip->GetStartTime())
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// STRONG-GUARANTEE in case of this path
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// not that it matters.
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throw SimpleMessageBoxException{
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_("There is not enough room available to paste the selection")
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};
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}
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}
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insideClip->Paste(t0, other->GetClipByIndex(0));
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return true;
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}
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// Just fall through and exhibit NEW behaviour
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}
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// Just fall through and exhibit NEW behaviour
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}
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// Insert NEW clips
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//wxPrintf("paste: multi clip mode!\n");
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// Insert NEW clips
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//wxPrintf("paste: multi clip mode!\n");
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if (!editClipCanMove && !IsEmpty(t0, t0+insertDuration-1.0/mRate))
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// STRONG-GUARANTEE in case of this path
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// not that it matters.
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throw SimpleMessageBoxException{
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_("There is not enough room available to paste the selection")
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};
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if (!editClipCanMove && !IsEmpty(t0, t0+insertDuration-1.0/mRate))
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// STRONG-GUARANTEE in case of this path
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// not that it matters.
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throw SimpleMessageBoxException{
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_("There is not enough room available to paste the selection")
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};
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for (const auto &clip : other->mClips)
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{
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// AWD Oct. 2009: Don't actually paste in placeholder clips
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if (!clip->GetIsPlaceholder())
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for (const auto &clip : other->mClips)
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{
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auto newClip =
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std::make_unique<WaveClip>( *clip, mDirManager, true );
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newClip->Resample(mRate);
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newClip->Offset(t0);
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newClip->MarkChanged();
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mClips.push_back(std::move(newClip)); // transfer ownership
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// AWD Oct. 2009: Don't actually paste in placeholder clips
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if (!clip->GetIsPlaceholder())
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{
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auto newClip =
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std::make_unique<WaveClip>( *clip, mDirManager, true );
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newClip->Resample(mRate);
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newClip->Offset(t0);
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newClip->MarkChanged();
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mClips.push_back(std::move(newClip)); // transfer ownership
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}
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}
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}
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return true;
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} );
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if( !bOk )
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// THROW_INCONSISTENCY_EXCEPTION; // ?
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;
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}
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void WaveTrack::Silence(double t0, double t1)
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