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Remove use of GetLink(ed) in AudacityProject::OnPaste

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This commit is contained in:
Paul Licameli 2017-01-11 20:49:38 -05:00
parent 7eadd7a36f
commit d2a18f01e3
1 changed files with 37 additions and 11 deletions
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32
src/Menus.cpp
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@ -5710,6 +5710,7 @@ void MenuCommandHandler::OnPaste(const CommandContext &context)
bool bPastedSomething = false;
auto pC = clipTrackRange.begin();
size_t nnChannels, ncChannels;
while (*pN && *pC) {
auto n = *pN;
auto c = *pC;
@ -5764,15 +5765,34 @@ void MenuCommandHandler::OnPaste(const CommandContext &context)
_("Pasting one type of track into another is not allowed.")
};
// We should need this check only each time we visit the leading
// channel
if ( n->IsLeader() ) {
wxASSERT( c->IsLeader() ); // the iteration logic should ensure this
auto cChannels = TrackList::Channels(c);
ncChannels = cChannels.size();
auto nChannels = TrackList::Channels(n);
nnChannels = nChannels.size();
// When trying to copy from stereo to mono track, show error and exit
// TODO: Automatically offer user to mix down to mono (unfortunately
// this is not easy to implement
if (c->GetLinked() && !n->GetLinked())
if (ncChannels > nnChannels)
{
if (ncChannels > 2) {
// TODO: more-than-two-channels-message
// Re-word the error message
}
// else
// Throw, so that any previous changes to the project in this loop
// are discarded.
throw SimpleMessageBoxException{
_("Copying stereo audio into a mono track is not allowed.")
};
}
}
if (!ff)
ff = n;
@ -5807,11 +5827,17 @@ void MenuCommandHandler::OnPaste(const CommandContext &context)
}
);
--nnChannels;
--ncChannels;
// When copying from mono to stereo track, paste the wave form
// to both channels
if (n->GetLinked() && !c->GetLinked())
// TODO: more-than-two-channels
// This will replicate the last pasted channel as many times as needed
while (nnChannels > 0 && ncChannels == 0)
{
n = * ++ pN;
--nnChannels;
n->TypeSwitch(
[&](WaveTrack *wn){
@ -5827,7 +5853,7 @@ void MenuCommandHandler::OnPaste(const CommandContext &context)
);
}
if (bAdvanceClipboard){
if (bAdvanceClipboard) {
prevClip = c;
c = * ++ pC;
}