Merge pull request #2737 from Be-ing/timing_shifts_ui

add ControlObjects for shifting cue points

4 files changed, 30 insertions, 0 deletions

diff --git a/src/track/cue.cpp b/src/track/cue.cpp
index b2d9233d34..96d0365f64 100644
--- a/src/track/cue.cpp
+++ b/src/track/cue.cpp
@@ -195,6 +195,19 @@ void Cue::setEndPosition(double samplePosition) {
     emit updated();
 }
 
+void Cue::shiftPositionFrames(double frameOffset) {
+    QMutexLocker lock(&m_mutex);
+    if (m_sampleStartPosition != kNoPosition) {
+        m_sampleStartPosition += frameOffset * mixxx::kEngineChannelCount;
+    }
+    if (m_sampleEndPosition != kNoPosition) {
+        m_sampleEndPosition += frameOffset * mixxx::kEngineChannelCount;
+    }
+    m_bDirty = true;
+    lock.unlock();
+    emit updated();
+}
+
 double Cue::getLength() const {
     QMutexLocker lock(&m_mutex);
     if (m_sampleEndPosition == Cue::kNoPosition) {
diff --git a/src/track/cue.h b/src/track/cue.h
index f6fe28ae72..d7c6d36f9a 100644
--- a/src/track/cue.h
+++ b/src/track/cue.h
@@ -48,6 +48,7 @@ class Cue : public QObject {
             double samplePosition = kNoPosition);
     void setEndPosition(
             double samplePosition = kNoPosition);
+    void shiftPositionFrames(double frameOffset);
 
     double getLength() const;
 
diff --git a/src/track/track.cpp b/src/track/track.cpp
index 24781b18df..1547a42985 100644
--- a/src/track/track.cpp
+++ b/src/track/track.cpp
@@ -759,6 +759,20 @@ void Track::setCuePoint(CuePosition cue) {
     emit cuesUpdated();
 }
 
+void Track::shiftCuePositionsMillis(double milliseconds) {
+    QMutexLocker lock(&m_qMutex);
+
+    VERIFY_OR_DEBUG_ASSERT(m_streamInfo) {
+        return;
+    }
+    double frames = m_streamInfo->getSignalInfo().millis2frames(milliseconds);
+    for (const CuePointer& pCue : m_cuePoints) {
+        pCue->shiftPositionFrames(frames);
+    }
+
+    markDirtyAndUnlock(&lock);
+}
+
 void Track::analysisFinished() {
     emit analyzed();
 }
diff --git a/src/track/track.h b/src/track/track.h
index 7d7c0c6ba7..75524ee438 100644
--- a/src/track/track.h
+++ b/src/track/track.h
@@ -252,6 +252,8 @@ class Track : public QObject {
     CuePosition getCuePoint() const;
     // Set the track's main cue point
     void setCuePoint(CuePosition cue);
+    /// Shift all cues by a constant offset
+    void shiftCuePositionsMillis(double milliseconds);
     // Call when analysis is done.
     void analysisFinished();