widget: use rational for internal playhead value

Fixes #1688

app/widget/playbackcontrols/playbackcontrols.cpp

@@ -53,8 +53,9 @@ PlaybackControls::PlaybackControls(QWidget *parent) :
   lower_left_layout->setSpacing(0);
   lower_left_layout->setMargin(0);
 
-  cur_tc_lbl_ = new TimeSlider();
-  connect(cur_tc_lbl_, &TimeSlider::ValueChanged, this, &PlaybackControls::TimeChanged);
+  cur_tc_lbl_ = new RationalSlider();
+  cur_tc_lbl_->SetDisplayType(RationalSlider::kTime);
+  connect(cur_tc_lbl_, &RationalSlider::ValueChanged, this, &PlaybackControls::TimeChanged);
   lower_left_layout->addWidget(cur_tc_lbl_);
   lower_left_layout->addStretch();
 
@@ -179,12 +180,12 @@ void PlaybackControls::SetAudioVideoDragButtonsVisible(bool e)
   audio_drag_btn_->setVisible(e);
 }
 
-void PlaybackControls::SetTime(const int64_t &r)
+void PlaybackControls::SetTime(const rational &r)
 {
   cur_tc_lbl_->SetValue(r);
 }
 
-void PlaybackControls::SetEndTime(const int64_t &r)
+void PlaybackControls::SetEndTime(const rational &r)
 {
   if (time_base_.isNull()) {
     return;
@@ -192,9 +193,9 @@ void PlaybackControls::SetEndTime(const int64_t &r)
 
   end_time_ = r;
 
-  end_tc_lbl_->setText(Timecode::timestamp_to_timecode(end_time_,
-                                                       time_base_,
-                                                       Core::instance()->GetTimecodeDisplay()));
+  end_tc_lbl_->setText(Timecode::time_to_timecode(end_time_,
+                                                  time_base_,
+                                                  Core::instance()->GetTimecodeDisplay()));
 }
 
 void PlaybackControls::ShowPauseButton()

app/widget/playbackcontrols/playbackcontrols.h

@@ -28,7 +28,7 @@
 
 #include "common/rational.h"
 #include "dragbutton.h"
-#include "widget/slider/timeslider.h"
+#include "widget/slider/rationalslider.h"
 
 namespace olive {
 
@@ -53,9 +53,9 @@ public:
   void SetAudioVideoDragButtonsVisible(bool e);
 
 public slots:
-  void SetTime(const int64_t &r);
+  void SetTime(const rational &r);
 
-  void SetEndTime(const int64_t &r);
+  void SetEndTime(const rational &r);
 
   void ShowPauseButton();
 
@@ -100,7 +100,7 @@ signals:
 
   void VideoPressed();
 
-  void TimeChanged(const int64_t& t);
+  void TimeChanged(const rational& t);
 
 protected:
   virtual void changeEvent(QEvent *) override;
@@ -111,10 +111,10 @@ private:
   QWidget* lower_left_container_;
   QWidget* lower_right_container_;
 
-  TimeSlider* cur_tc_lbl_;
+  RationalSlider* cur_tc_lbl_;
   QLabel* end_tc_lbl_;
 
-  int64_t end_time_;
+  rational end_time_;
 
   rational time_base_;