diff --git a/app/render/backend/audiorenderbackend.cpp b/app/render/backend/audiorenderbackend.cpp
index 5baf68c17..2200328c7 100644
--- a/app/render/backend/audiorenderbackend.cpp
+++ b/app/render/backend/audiorenderbackend.cpp
@@ -27,6 +27,8 @@ void AudioRenderBackend::SetParameters(const AudioRenderingParams &params)
 
   // Regenerate the cache ID
   RegenerateCacheID();
+
+  emit ParamsChanged();
 }
 
 void AudioRenderBackend::ConnectViewer(ViewerOutput *node)
diff --git a/app/render/backend/audiorenderbackend.h b/app/render/backend/audiorenderbackend.h
index 775d7991a..897efa8d7 100644
--- a/app/render/backend/audiorenderbackend.h
+++ b/app/render/backend/audiorenderbackend.h
@@ -24,6 +24,9 @@ public:
 
   QString CachePathName();
 
+signals:
+  void ParamsChanged();
+
 protected:
   virtual void ConnectViewer(ViewerOutput* node) override;
 
diff --git a/app/widget/timelinewidget/view/timelineplayhead.cpp b/app/widget/timelinewidget/view/timelineplayhead.cpp
index 0b9ea95a9..f15e9cf2d 100644
--- a/app/widget/timelinewidget/view/timelineplayhead.cpp
+++ b/app/widget/timelinewidget/view/timelineplayhead.cpp
@@ -22,12 +22,12 @@
 
 #include <QPainter>
 
-const QColor &TimelinePlayhead::PlayheadColor() const
+const QColor &TimelinePlayhead::GetPlayheadColor() const
 {
   return playhead_color_;
 }
 
-const QColor &TimelinePlayhead::PlayheadHighlightColor() const
+const QColor &TimelinePlayhead::GetPlayheadHighlightColor() const
 {
   return playhead_highlight_color_;
 }
@@ -45,10 +45,10 @@ void TimelinePlayhead::SetPlayheadHighlightColor(QColor c)
 void TimelinePlayhead::Draw(QPainter* painter, const QRectF& playhead_rect) const
 {
   painter->setPen(Qt::NoPen);
-  painter->setBrush(PlayheadHighlightColor());
+  painter->setBrush(GetPlayheadHighlightColor());
   painter->drawRect(playhead_rect);
 
-  painter->setPen(PlayheadColor());
+  painter->setPen(GetPlayheadColor());
   painter->setBrush(Qt::NoBrush);
   painter->drawLine(QLineF(playhead_rect.topLeft(), playhead_rect.bottomLeft()));
 }
diff --git a/app/widget/timelinewidget/view/timelineplayhead.h b/app/widget/timelinewidget/view/timelineplayhead.h
index bbdf1f934..15b2f0031 100644
--- a/app/widget/timelinewidget/view/timelineplayhead.h
+++ b/app/widget/timelinewidget/view/timelineplayhead.h
@@ -31,13 +31,13 @@
 class TimelinePlayhead : public QWidget
 {
   Q_OBJECT
-  Q_PROPERTY(QColor playheadColor READ PlayheadColor WRITE SetPlayheadColor DESIGNABLE true)
-  Q_PROPERTY(QColor playheadHighlightColor READ PlayheadHighlightColor WRITE SetPlayheadHighlightColor DESIGNABLE true)
+  Q_PROPERTY(QColor playheadColor READ GetPlayheadColor WRITE SetPlayheadColor DESIGNABLE true)
+  Q_PROPERTY(QColor playheadHighlightColor READ GetPlayheadHighlightColor WRITE SetPlayheadHighlightColor DESIGNABLE true)
 public:
   TimelinePlayhead() = default;
 
-  const QColor& PlayheadColor() const;
-  const QColor& PlayheadHighlightColor() const;
+  const QColor& GetPlayheadColor() const;
+  const QColor& GetPlayheadHighlightColor() const;
 
   void SetPlayheadColor(QColor c);
   void SetPlayheadHighlightColor(QColor c);
diff --git a/app/widget/timeruler/CMakeLists.txt b/app/widget/timeruler/CMakeLists.txt
index 9fe06158f..9c7882713 100644
--- a/app/widget/timeruler/CMakeLists.txt
+++ b/app/widget/timeruler/CMakeLists.txt
@@ -16,6 +16,8 @@
 
 set(OLIVE_SOURCES
   ${OLIVE_SOURCES}
+  widget/timeruler/seekablewidget.h
+  widget/timeruler/seekablewidget.cpp
   widget/timeruler/timeruler.h
   widget/timeruler/timeruler.cpp
   PARENT_SCOPE
diff --git a/app/widget/timeruler/seekablewidget.cpp b/app/widget/timeruler/seekablewidget.cpp
new file mode 100644
index 000000000..b24d90ae2
--- /dev/null
+++ b/app/widget/timeruler/seekablewidget.cpp
@@ -0,0 +1,110 @@
+#include "seekablewidget.h"
+
+#include <QMouseEvent>
+#include <QtMath>
+
+SeekableWidget::SeekableWidget(QWidget* parent) :
+  TimelineScaledWidget(parent),
+  time_(0),
+  timeline_points_(nullptr),
+  scroll_(0)
+{
+
+}
+
+void SeekableWidget::ConnectTimelinePoints(TimelinePoints *points)
+{
+  if (timeline_points_) {
+    disconnect(timeline_points_->workarea(), &TimelineWorkArea::RangeChanged, this, static_cast<void (SeekableWidget::*)()>(&SeekableWidget::update));
+    disconnect(timeline_points_->workarea(), &TimelineWorkArea::EnabledChanged, this, static_cast<void (SeekableWidget::*)()>(&SeekableWidget::update));
+  }
+
+  timeline_points_ = points;
+
+  if (timeline_points_) {
+    connect(timeline_points_->workarea(), &TimelineWorkArea::RangeChanged, this, static_cast<void (SeekableWidget::*)()>(&SeekableWidget::update));
+    connect(timeline_points_->workarea(), &TimelineWorkArea::EnabledChanged, this, static_cast<void (SeekableWidget::*)()>(&SeekableWidget::update));
+  }
+
+  update();
+}
+
+const int64_t &SeekableWidget::GetTime() const
+{
+  return time_;
+}
+
+const int &SeekableWidget::GetScroll() const
+{
+  return scroll_;
+}
+
+void SeekableWidget::mousePressEvent(QMouseEvent *event)
+{
+  SeekToScreenPoint(event->pos().x());
+}
+
+void SeekableWidget::mouseMoveEvent(QMouseEvent *event)
+{
+  if (event->buttons() & Qt::LeftButton) {
+    SeekToScreenPoint(event->pos().x());
+  }
+}
+
+void SeekableWidget::ScaleChangedEvent(const double &)
+{
+  update();
+}
+
+TimelinePoints *SeekableWidget::timeline_points() const
+{
+  return timeline_points_;
+}
+
+void SeekableWidget::SetTime(const int64_t &r)
+{
+  time_ = r;
+
+  update();
+}
+
+void SeekableWidget::SetScroll(int s)
+{
+  scroll_ = s;
+
+  update();
+}
+
+double SeekableWidget::ScreenToUnitFloat(int screen)
+{
+  return (screen + scroll_) / GetScale() / timebase_dbl();
+}
+
+int64_t SeekableWidget::ScreenToUnit(int screen)
+{
+  return qFloor(ScreenToUnitFloat(screen));
+}
+
+int64_t SeekableWidget::ScreenToUnitRounded(int screen)
+{
+  return qRound64(ScreenToUnitFloat(screen));
+}
+
+int SeekableWidget::UnitToScreen(int64_t unit)
+{
+  return qFloor(static_cast<double>(unit) * GetScale() * timebase_dbl()) - scroll_;
+}
+
+int SeekableWidget::TimeToScreen(const rational &time)
+{
+  return qFloor(time.toDouble() * GetScale()) - scroll_;
+}
+
+void SeekableWidget::SeekToScreenPoint(int screen)
+{
+  int64_t timestamp = qMax(static_cast<int64_t>(0), ScreenToUnitRounded(screen));
+
+  SetTime(timestamp);
+
+  emit TimeChanged(timestamp);
+}
diff --git a/app/widget/timeruler/seekablewidget.h b/app/widget/timeruler/seekablewidget.h
new file mode 100644
index 000000000..9c79d20e6
--- /dev/null
+++ b/app/widget/timeruler/seekablewidget.h
@@ -0,0 +1,72 @@
+#ifndef SEEKABLEWIDGET_H
+#define SEEKABLEWIDGET_H
+
+#include "common/rational.h"
+#include "timeline/timelinepoints.h"
+#include "widget/timelinewidget/view/timelineplayhead.h"
+#include "widget/timelinewidget/timelinescaledobject.h"
+
+class SeekableWidget : public TimelineScaledWidget
+{
+  Q_OBJECT
+public:
+  SeekableWidget(QWidget *parent = nullptr);
+
+  const int64_t& GetTime() const;
+
+  const int& GetScroll() const;
+
+  void ConnectTimelinePoints(TimelinePoints* points);
+
+public slots:
+  void SetTime(const int64_t &r);
+
+  void SetScroll(int s);
+
+protected:
+  void SeekToScreenPoint(int screen);
+
+  virtual void mousePressEvent(QMouseEvent *event) override;
+  virtual void mouseMoveEvent(QMouseEvent *event) override;
+
+  virtual void ScaleChangedEvent(const double&) override;
+
+  TimelinePoints* timeline_points() const;
+
+  double ScreenToUnitFloat(int screen);
+
+  int64_t ScreenToUnit(int screen);
+  int64_t ScreenToUnitRounded(int screen);
+
+  int UnitToScreen(int64_t unit);
+
+  int TimeToScreen(const rational& time);
+
+  inline const QColor& GetPlayheadColor() const
+  {
+    return style_.GetPlayheadColor();
+  }
+
+  inline const QColor& GetPlayheadHighlightColor() const
+  {
+    return style_.GetPlayheadHighlightColor();
+  }
+
+signals:
+  /**
+   * @brief Signal emitted whenever the time changes on this ruler, either by user or programatically
+   */
+  void TimeChanged(int64_t);
+
+private:
+  int64_t time_;
+
+  TimelinePlayhead style_;
+
+  TimelinePoints* timeline_points_;
+
+  int scroll_;
+
+};
+
+#endif // SEEKABLEWIDGET_H
diff --git a/app/widget/timeruler/timeruler.cpp b/app/widget/timeruler/timeruler.cpp
index beb0daf5c..25df8bdfe 100644
--- a/app/widget/timeruler/timeruler.cpp
+++ b/app/widget/timeruler/timeruler.cpp
@@ -21,9 +21,7 @@
 #include "timeruler.h"
 
 #include <QDebug>
-#include <QMouseEvent>
 #include <QPainter>
-#include <QtMath>
 
 #include "common/timecodefunctions.h"
 #include "common/qtutils.h"
@@ -31,13 +29,10 @@
 #include "core.h"
 
 TimeRuler::TimeRuler(bool text_visible, bool cache_status_visible, QWidget* parent) :
-  TimelineScaledWidget(parent),
-  scroll_(0),
+  SeekableWidget(parent),
   text_visible_(text_visible),
   centered_text_(true),
-  time_(0),
-  show_cache_status_(cache_status_visible),
-  timeline_points_(nullptr)
+  show_cache_status_(cache_status_visible)
 {
   QFontMetrics fm = fontMetrics();
 
@@ -58,28 +53,6 @@ TimeRuler::TimeRuler(bool text_visible, bool cache_status_visible, QWidget* pare
   UpdateHeight();
 }
 
-void TimeRuler::ConnectTimelinePoints(TimelinePoints *points)
-{
-  if (timeline_points_) {
-    disconnect(timeline_points_->workarea(), &TimelineWorkArea::RangeChanged, this, &TimeRuler::TimelineWorkareaChanged);
-    disconnect(timeline_points_->workarea(), &TimelineWorkArea::EnabledChanged, this, &TimeRuler::TimelineWorkareaChanged);
-  }
-
-  timeline_points_ = points;
-
-  if (timeline_points_) {
-    connect(timeline_points_->workarea(), &TimelineWorkArea::RangeChanged, this, &TimeRuler::TimelineWorkareaChanged);
-    connect(timeline_points_->workarea(), &TimelineWorkArea::EnabledChanged, this, &TimeRuler::TimelineWorkareaChanged);
-  }
-
-  update();
-}
-
-const int64_t &TimeRuler::GetTime()
-{
-  return time_;
-}
-
 void TimeRuler::SetCacheStatusLength(const rational &length)
 {
   if (show_cache_status_) {
@@ -91,20 +64,6 @@ void TimeRuler::SetCacheStatusLength(const rational &length)
   }
 }
 
-void TimeRuler::SetTime(const int64_t &r)
-{
-  time_ = r;
-
-  update();
-}
-
-void TimeRuler::SetScroll(int s)
-{
-  scroll_ = s;
-
-  update();
-}
-
 void TimeRuler::CacheInvalidatedRange(const TimeRange& range)
 {
   if (show_cache_status_) {
@@ -133,15 +92,15 @@ void TimeRuler::paintEvent(QPaintEvent *)
   QPainter p(this);
 
   // Draw timeline points if connected
-  if (timeline_points_) {
-    if (timeline_points_->workarea()->enabled()) {
-      int workarea_left = qMax(0, TimeToScreen(timeline_points_->workarea()->in()));
+  if (timeline_points()) {
+    if (timeline_points()->workarea()->enabled()) {
+      int workarea_left = qMax(0, TimeToScreen(timeline_points()->workarea()->in()));
       int workarea_right;
 
-      if (timeline_points_->workarea()->out() == TimelineWorkArea::kResetOut) {
+      if (timeline_points()->workarea()->out() == TimelineWorkArea::kResetOut) {
         workarea_right = width();
       } else {
-        workarea_right = qMin(width(), TimeToScreen(timeline_points_->workarea()->out()));
+        workarea_right = qMin(width(), TimeToScreen(timeline_points()->workarea()->out()));
       }
 
       p.fillRect(workarea_left, 0, workarea_right - workarea_left, height(), palette().highlight());
@@ -239,7 +198,7 @@ void TimeRuler::paintEvent(QPaintEvent *)
   const int kAverageTextWidth = 200;
 
   for (int i=-kAverageTextWidth;i<width()+kAverageTextWidth;i++) {
-    double screen_pt = static_cast<double>(i + scroll_);
+    double screen_pt = static_cast<double>(i + GetScroll());
 
     if (long_interval > -1) {
       int this_long_unit = qFloor(screen_pt/long_interval);
@@ -318,26 +277,14 @@ void TimeRuler::paintEvent(QPaintEvent *)
   }
 
   // Draw the playhead if it's on screen at the moment
-  int playhead_pos = UnitToScreen(time_);
+  int playhead_pos = UnitToScreen(GetTime());
   if (playhead_pos + playhead_width_ >= 0 && playhead_pos - playhead_width_ < width()) {
     p.setPen(Qt::NoPen);
-    p.setBrush(style_.PlayheadColor());
+    p.setBrush(GetPlayheadColor());
     DrawPlayhead(&p, playhead_pos, line_bottom);
   }
 }
 
-void TimeRuler::mousePressEvent(QMouseEvent *event)
-{
-  SeekToScreenPoint(event->pos().x());
-}
-
-void TimeRuler::mouseMoveEvent(QMouseEvent *event)
-{
-  if (event->buttons() & Qt::LeftButton) {
-    SeekToScreenPoint(event->pos().x());
-  }
-}
-
 void TimeRuler::TimebaseChangedEvent(const rational &tb)
 {
   timebase_flipped_dbl_ = tb.flipped().toDouble();
@@ -345,11 +292,6 @@ void TimeRuler::TimebaseChangedEvent(const rational &tb)
   update();
 }
 
-void TimeRuler::ScaleChangedEvent(const double &)
-{
-  update();
-}
-
 void TimeRuler::DrawPlayhead(QPainter *p, int x, int y)
 {
   p->setRenderHint(QPainter::Antialiasing);
@@ -374,40 +316,6 @@ int TimeRuler::CacheStatusHeight() const
   return fontMetrics().height() / 4;
 }
 
-double TimeRuler::ScreenToUnitFloat(int screen)
-{
-  return (screen + scroll_) / GetScale() / timebase_dbl();
-}
-
-int64_t TimeRuler::ScreenToUnit(int screen)
-{
-  return qFloor(ScreenToUnitFloat(screen));
-}
-
-int TimeRuler::UnitToScreen(int64_t unit)
-{
-  return qFloor(static_cast<double>(unit) * GetScale() * timebase_dbl()) - scroll_;
-}
-
-int TimeRuler::TimeToScreen(const rational &time)
-{
-  return qFloor(time.toDouble() * GetScale()) - scroll_;
-}
-
-void TimeRuler::SeekToScreenPoint(int screen)
-{
-  int64_t timestamp = qMax(0, qRound(ScreenToUnitFloat(screen)));
-
-  SetTime(timestamp);
-
-  emit TimeChanged(timestamp);
-}
-
-void TimeRuler::TimelineWorkareaChanged()
-{
-  update();
-}
-
 void TimeRuler::UpdateHeight()
 {
   int height = text_height_;
diff --git a/app/widget/timeruler/timeruler.h b/app/widget/timeruler/timeruler.h
index 471d1b752..f926d59d3 100644
--- a/app/widget/timeruler/timeruler.h
+++ b/app/widget/timeruler/timeruler.h
@@ -24,13 +24,10 @@
 #include <QTimer>
 #include <QWidget>
 
-#include "common/rational.h"
 #include "common/timerange.h"
-#include "timeline/timelinepoints.h"
-#include "widget/timelinewidget/timelinescaledobject.h"
-#include "widget/timelinewidget/view/timelineplayhead.h"
+#include "seekablewidget.h"
 
-class TimeRuler : public TimelineScaledWidget
+class TimeRuler : public SeekableWidget
 {
   Q_OBJECT
 public:
@@ -38,15 +35,7 @@ public:
 
   void SetCenteredText(bool c);
 
-  void ConnectTimelinePoints(TimelinePoints* points);
-
-  const int64_t& GetTime();
-
 public slots:
-  void SetTime(const int64_t &r);
-
-  void SetScroll(int s);
-
   void CacheInvalidatedRange(const TimeRange &range);
 
   void CacheTimeReady(const rational& time);
@@ -56,19 +45,8 @@ public slots:
 protected:
   virtual void paintEvent(QPaintEvent* e) override;
 
-  virtual void mousePressEvent(QMouseEvent *event) override;
-  virtual void mouseMoveEvent(QMouseEvent *event) override;
-
   virtual void TimebaseChangedEvent(const rational& tb) override;
 
-  virtual void ScaleChangedEvent(const double&);
-
-signals:
-  /**
-   * @brief Signal emitted whenever the time changes on this ruler, either by user or programatically
-   */
-  void TimeChanged(int64_t);
-
 private:
   void UpdateHeight();
 
@@ -76,16 +54,6 @@ private:
 
   int CacheStatusHeight() const;
 
-  double ScreenToUnitFloat(int screen);
-
-  int64_t ScreenToUnit(int screen);
-
-  int UnitToScreen(int64_t unit);
-
-  int TimeToScreen(const rational& time);
-
-  void SeekToScreenPoint(int screen);
-
   int text_height_;
 
   int cache_status_height_;
@@ -94,29 +62,18 @@ private:
 
   int playhead_width_;
 
-  int scroll_;
-
   bool text_visible_;
 
   bool centered_text_;
 
   double timebase_flipped_dbl_;
 
-  int64_t time_;
-
-  TimelinePlayhead style_;
-
   bool show_cache_status_;
 
   rational cache_length_;
 
   TimeRangeList dirty_cache_ranges_;
 
-  TimelinePoints* timeline_points_;
-
-private slots:
-  void TimelineWorkareaChanged();
-
 };
 
 #endif // TIMERULER_H
diff --git a/app/widget/viewer/viewer.cpp b/app/widget/viewer/viewer.cpp
index 747296c0b..f8c329237 100644
--- a/app/widget/viewer/viewer.cpp
+++ b/app/widget/viewer/viewer.cpp
@@ -96,6 +96,7 @@ ViewerWidget::ViewerWidget(QWidget *parent) :
   audio_renderer_ = new AudioBackend(this);
 
   waveform_view_->SetBackend(audio_renderer_);
+  connect(waveform_view_, &WaveformView::TimeChanged, this, &ViewerWidget::SetTimeAndSignal);
 
   connect(PixelFormat::instance(), &PixelFormat::FormatChanged, this, &ViewerWidget::UpdateRendererParameters);
 
@@ -109,6 +110,7 @@ void ViewerWidget::TimeChangedEvent(const int64_t &i)
   }
 
   controls_->SetTime(i);
+  waveform_view_->SetTime(i);
 
   if (GetConnectedNode() && last_time_ != i) {
     rational time_set = Timecode::timestamp_to_time(i, timebase());
diff --git a/app/widget/viewer/waveformview.cpp b/app/widget/viewer/waveformview.cpp
index 20508eb87..a0f26c03b 100644
--- a/app/widget/viewer/waveformview.cpp
+++ b/app/widget/viewer/waveformview.cpp
@@ -7,7 +7,7 @@
 #include "common/clamp.h"
 
 WaveformView::WaveformView(QWidget *parent) :
-  TimelineScaledWidget(parent),
+  SeekableWidget(parent),
   backend_(nullptr)
 {
   setAutoFillBackground(true);
@@ -18,12 +18,18 @@ void WaveformView::SetBackend(AudioRenderBackend *backend)
 {
   if (backend_) {
     disconnect(backend_, &AudioRenderBackend::QueueComplete, this, static_cast<void (WaveformView::*)()>(&WaveformView::update));
+    disconnect(backend_, &AudioRenderBackend::ParamsChanged, this, &WaveformView::BackendParamsChanged);
+
+    SetTimebase(0);
   }
 
   backend_ = backend;
 
   if (backend_) {
     connect(backend_, &AudioRenderBackend::QueueComplete, this, static_cast<void (WaveformView::*)()>(&WaveformView::update));
+    connect(backend_, &AudioRenderBackend::ParamsChanged, this, &WaveformView::BackendParamsChanged);
+
+    SetTimebase(rational(1, backend_->params().sample_rate()));
   }
 
   update();
@@ -69,15 +75,6 @@ void WaveformView::DrawWaveform(QPainter *painter, const QRect& rect, const doub
   }
 }
 
-void WaveformView::SetScroll(int scroll)
-{
-  scroll_ = scroll;
-
-  qDebug() << "Got scroll" << scroll_;
-
-  update();
-}
-
 void WaveformView::paintEvent(QPaintEvent *event)
 {
   QWidget::paintEvent(event);
@@ -94,6 +91,7 @@ void WaveformView::paintEvent(QPaintEvent *event)
 
     QPainter p(this);
 
+    // FIXME: Hardcoded color
     p.setPen(Qt::green);
 
     int channel_height = height() / params.channel_count();
@@ -101,11 +99,11 @@ void WaveformView::paintEvent(QPaintEvent *event)
 
     int drew = 0;
 
-    fs.seek(params.samples_to_bytes(GetSampleIndexFromPixel(0)));
+    fs.seek(params.samples_to_bytes(ScreenToUnitRounded(0)));
 
     for (int x=0; x<width() && !fs.atEnd(); x++) {
 
-      int samples_len = GetSampleIndexFromPixel(x+1) - GetSampleIndexFromPixel(x);
+      int samples_len = ScreenToUnitRounded(x+1) - ScreenToUnitRounded(x);
       int max_read_size = params.samples_to_bytes(samples_len);
 
       QByteArray read_buffer = fs.read(max_read_size);
@@ -133,16 +131,16 @@ void WaveformView::paintEvent(QPaintEvent *event)
 
     fs.close();
 
+    // Draw playhead
+    p.setPen(GetPlayheadColor());
+
+    int playhead_x = UnitToScreen(GetTime());
+    p.drawLine(playhead_x, 0, playhead_x, height());
+
   }
 }
 
-void WaveformView::ScaleChangedEvent(const double &)
+void WaveformView::BackendParamsChanged()
 {
-  update();
-}
-
-int WaveformView::GetSampleIndexFromPixel(int x) const
-{
-  qDebug() << "X was" << x << "scroll was" << scroll_ << "=" << (x + scroll_);
-  return qRound(static_cast<double>(x + scroll_) * static_cast<double>(backend_->params().sample_rate()) / GetScale());
+  SetTimebase(rational(1, backend_->params().sample_rate()));
 }
diff --git a/app/widget/viewer/waveformview.h b/app/widget/viewer/waveformview.h
index 1bc3b542c..1e92e2d1d 100644
--- a/app/widget/viewer/waveformview.h
+++ b/app/widget/viewer/waveformview.h
@@ -6,9 +6,9 @@
 #include "audio/sumsamples.h"
 #include "render/audioparams.h"
 #include "render/backend/audiorenderbackend.h"
-#include "widget/timelinewidget/timelinescaledobject.h"
+#include "widget/timeruler/seekablewidget.h"
 
-class WaveformView : public TimelineScaledWidget
+class WaveformView : public SeekableWidget
 {
   Q_OBJECT
 public:
@@ -20,20 +20,14 @@ public:
 
   static void DrawWaveform(QPainter* painter, const QRect &rect, const double &scale, const SampleSummer::Sum *samples, int nb_samples, int channels);
 
-public slots:
-  void SetScroll(int scroll);
-
 protected:
   virtual void paintEvent(QPaintEvent* event) override;
 
-  virtual void ScaleChangedEvent(const double& s) override;
-
 private:
-  int GetSampleIndexFromPixel(int x) const;
-
   AudioRenderBackend* backend_;
 
-  int scroll_;
+private slots:
+  void BackendParamsChanged();
 
 };