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Code Issues Releases Wiki Activity

More factoring of TimeShiftHandle::Drag

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This commit is contained in:
Paul Licameli
2018-09-26 19:27:07 -04:00
parent fc5f7331d1
commit d812513979
1 changed files with 36 additions and 39 deletions
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75
src/tracks/ui/TimeShiftHandle.cpp
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@@ -524,6 +524,36 @@ namespace {
return true;
}
bool CheckFit(
const ViewInfo &viewInfo, wxCoord xx, ClipMoveState &state,
double tolerance, double &desiredSlideAmount )
{
bool ok = true;
double firstTolerance = tolerance;
// The desiredSlideAmount may change and the tolerance may get used up.
for ( unsigned iPass = 0; iPass < 2 && ok; ++iPass ) {
for ( auto &trackClip : state.capturedClipArray ) {
WaveClip *const pSrcClip = trackClip.clip;
if (pSrcClip) {
ok = trackClip.dstTrack->CanInsertClip(
pSrcClip, desiredSlideAmount, tolerance );
if( !ok )
break;
}
}
// If it fits ok, desiredSlideAmount could have been updated to get
// the clip to fit.
// Check again, in the new position, this time with zero tolerance.
if (firstTolerance == 0)
break;
else
tolerance = 0.0;
}
return ok;
}
struct TemporaryClipRemover {
TemporaryClipRemover( ClipMoveState &clipMoveState )
: state( clipMoveState )
@@ -641,56 +671,23 @@ UIHandle::Result TimeShiftHandle::Drag
TemporaryClipRemover remover( mClipMoveState );
// Now check that the move is possible
bool ok = true;
double slide = desiredSlideAmount; // remember amount requested.
// The test for tolerance will need review with FishEye!
// The tolerance is supposed to be the time for one pixel, i.e. one pixel tolerance
// at current zoom.
double slide = desiredSlideAmount; // remember amount requested.
double tolerance = viewInfo.PositionToTime(event.m_x+1) - viewInfo.PositionToTime(event.m_x);
// The desiredSlideAmount may change and the tolerance may get used up.
for ( auto &trackClip : mClipMoveState.capturedClipArray ) {
WaveClip *const pSrcClip = trackClip.clip;
if (pSrcClip) {
ok = trackClip.dstTrack->CanInsertClip(
pSrcClip, desiredSlideAmount, tolerance );
if( !ok )
break;
}
}
if( ok ) {
// fits ok, but desiredSlideAmount could have been updated to get the clip to fit.
// Check again, in the new position, this time with zero tolerance.
tolerance = 0.0;
for ( auto &trackClip : mClipMoveState.capturedClipArray ) {
WaveClip *const pSrcClip = trackClip.clip;
if (pSrcClip) {
ok = trackClip.dstTrack->CanInsertClip(
pSrcClip, desiredSlideAmount, tolerance);
if ( !ok )
break;
}
}
}
double tolerance =
viewInfo.PositionToTime(event.m_x+1) - viewInfo.PositionToTime(event.m_x);
bool ok = CheckFit( viewInfo, event.m_x, mClipMoveState, tolerance, desiredSlideAmount );
if (!ok) {
// Failure, even with using tolerance.
remover.Fail();
// Failure -- we'll put clips back where they were
// ok will next indicate if a horizontal slide is OK.
ok = true; // assume slide is OK.
tolerance = 0.0;
desiredSlideAmount = slide;
for ( auto &trackClip : mClipMoveState.capturedClipArray ) {
WaveClip *const pSrcClip = trackClip.clip;
if (pSrcClip){
// back to the track it came from...
trackClip.dstTrack = static_cast<WaveTrack*>(trackClip.track);
ok = ok && trackClip.dstTrack->CanInsertClip(pSrcClip, desiredSlideAmount, tolerance);
}
}
ok = CheckFit( viewInfo, event.m_x, mClipMoveState, tolerance, desiredSlideAmount );
for ( auto &trackClip : mClipMoveState.capturedClipArray) {
WaveClip *const pSrcClip = trackClip.clip;
if (pSrcClip){