slider: reworked sliderbase and derivatives

Mostly cleaning up code, SliderBase was fairly messy.

app/common/rational.cpp

@@ -5,23 +5,42 @@
 
 namespace olive {
 
-rational rational::fromDouble(const double &flt)
+rational rational::fromDouble(const double &flt, bool* ok)
 {
   // Use FFmpeg function for the time being
-  return av_d2q(flt, INT_MAX);
+  AVRational r = av_d2q(flt, INT_MAX);
+  if (r.den == 0) {
+    // If den == 0, we were unable to convert to a rational
+    if (ok) {
+      *ok = false;
+    }
+
+    return rational();
+  } else {
+    // Otherwise, assume we received a real rational
+    if (ok) {
+      *ok = true;
+    }
+
+    return r;
+  }
+
 }
 
-rational rational::fromString(const QString &str)
+rational rational::fromString(const QString &str, bool* ok)
 {
   QStringList elements = str.split('/');
 
   switch (elements.size()) {
-  case 0:
-    return rational();
   case 1:
-    return rational(elements.first().toLongLong());
+    return rational(elements.first().toLongLong(ok));
+  case 2:
+    return rational(elements.at(0).toLongLong(ok), elements.at(1).toLongLong(ok));
   default:
-    return rational(elements.at(0).toLongLong(), elements.at(1).toLongLong());
+    if (ok) {
+      *ok = false;
+    }
+    return rational();
   }
 }
 

app/common/rational.h

@@ -61,9 +61,9 @@ public:
     reduce();
   }
 
-  static rational fromDouble(const double& flt);
+  static rational fromDouble(const double& flt, bool *ok = nullptr);
 
-  static rational fromString(const QString& str);
+  static rational fromString(const QString& str, bool* ok = nullptr);
 
   //Assignment Operators
   const rational& operator=(const rational &rhs);

app/common/timecodefunctions.cpp

@@ -233,6 +233,12 @@ err_fatal:
   return 0;
 }
 
+rational Timecode::timecode_to_time(const QString &timecode, const rational &timebase, const Timecode::Display &display, bool *ok)
+{
+  int64_t timestamp = timecode_to_timestamp(timecode, timebase, display, ok);
+  return timestamp_to_time(timestamp, timebase);
+}
+
 rational Timecode::snap_time_to_timebase(const rational &time, const rational &timebase)
 {
   // Just convert to a timestamp in timebase units and back

app/common/timecodefunctions.h

@@ -53,6 +53,7 @@ public:
   static QString timestamp_to_timecode(const int64_t &timestamp, const rational& timebase, const Display &display, bool show_plus_if_positive = false);
 
   static int64_t timecode_to_timestamp(const QString& timecode, const rational& timebase, const Display& display, bool *ok = nullptr);
+  static rational timecode_to_time(const QString& timecode, const rational& timebase, const Display& display, bool *ok = nullptr);
 
   static rational snap_time_to_timebase(const rational& time, const rational& timebase);
 

app/dialog/preferences/tabs/preferencesgeneraltab.cpp

@@ -101,10 +101,11 @@ PreferencesGeneralTab::PreferencesGeneralTab()
 
     timeline_layout->addWidget(new QLabel(tr("Default Still Image Length:")), row, 0);
 
-    default_still_length_ = new FloatSlider();
+    default_still_length_ = new RationalSlider();
-    default_still_length_->SetMinimum(0.1);
+    default_still_length_->SetMinimum(rational(100, 1000));
+    default_still_length_->SetTimebase(rational(100, 1000));
     default_still_length_->SetFormat(tr("%1 seconds"));
-    default_still_length_->SetValue(Config::Current()["DefaultStillLength"].value<rational>().toDouble());
+    default_still_length_->SetValue(Config::Current()["DefaultStillLength"].value<rational>());
     timeline_layout->addWidget(default_still_length_);
 
     row++;
@@ -168,7 +169,7 @@ void PreferencesGeneralTab::Accept(MultiUndoCommand *command)
 
   Config::Current()[QStringLiteral("Autoscroll")] = autoscroll_method_->currentData();
 
-  Config::Current()[QStringLiteral("DefaultStillLength")] = QVariant::fromValue(rational::fromDouble(default_still_length_->GetValue()));
+  Config::Current()[QStringLiteral("DefaultStillLength")] = QVariant::fromValue(default_still_length_->GetValue());
 
   QString set_language = language_combobox_->currentData().toString();
   if (QLocale::system().name() == set_language) {

app/dialog/preferences/tabs/preferencesgeneraltab.h

@@ -27,7 +27,7 @@
 
 #include "dialog/configbase/configdialogbase.h"
 #include "node/project/sequence/sequence.h"
-#include "widget/slider/floatslider.h"
+#include "widget/slider/rationalslider.h"
 #include "widget/slider/integerslider.h"
 
 namespace olive {
@@ -49,7 +49,7 @@ private:
 
   QCheckBox* rectified_waveforms_;
 
-  FloatSlider* default_still_length_;
+  RationalSlider* default_still_length_;
 
   QCheckBox* autorecovery_enabled_;
 

app/node/block/block.cpp

@@ -25,6 +25,7 @@
 #include "node/output/track/track.h"
 #include "transition/transition.h"
 #include "widget/slider/floatslider.h"
+#include "widget/slider/rationalslider.h"
 
 namespace olive {
 
@@ -43,11 +44,15 @@ Block::Block() :
   out_transition_(nullptr)
 {
   AddInput(kLengthInput, NodeValue::kRational, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
-  SetInputProperty(kLengthInput, "min", QVariant::fromValue(rational(0, 1)));
+  SetInputProperty(kLengthInput, QStringLiteral("min"), QVariant::fromValue(rational(0, 1)));
+  SetInputProperty(kLengthInput, QStringLiteral("view"), RationalSlider::kTime);
+  SetInputProperty(kLengthInput, QStringLiteral("viewlock"), true);
   IgnoreInvalidationsFrom(kLengthInput);
   IgnoreHashingFrom(kLengthInput);
 
   AddInput(kMediaInInput, NodeValue::kRational, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));
+  SetInputProperty(kMediaInInput, QStringLiteral("view"), RationalSlider::kTime);
+  SetInputProperty(kMediaInInput, QStringLiteral("viewlock"), true);
   IgnoreHashingFrom(kMediaInInput);
 
   AddInput(kEnabledInput, NodeValue::kBoolean, true, InputFlags(kInputFlagNotConnectable | kInputFlagNotKeyframable));

app/widget/menu/menushared.cpp

@@ -160,35 +160,30 @@ void MenuShared::AddItemsForClipEditMenu(Menu *m)
   m->addAction(clip_nest_item_);
 }
 
-void MenuShared::AddItemsForTimeRulerMenu(Menu *m, const rational& timebase)
+void MenuShared::AddItemsForTimeRulerMenu(Menu *m)
 {
-  // If a menu is already created (such as the view menu) we need to remove the instance
+  m->addAction(view_timecode_view_dropframe_item_);
-  // of dropframe or non-dropframe timecode that is already there to avoid double displays
+  m->addAction(view_timecode_view_nondropframe_item_);
-
-  if (m->actions().contains(view_timecode_view_dropframe_item_)) {
-    m->removeAction(view_timecode_view_dropframe_item_);
-  }
-
-  if (m->actions().contains(view_timecode_view_nondropframe_item_)) {
-    m->removeAction(view_timecode_view_nondropframe_item_);
-  }
-    
-  if (Timecode::TimebaseIsDropFrame(timebase)) {
-    m->addAction(view_timecode_view_dropframe_item_);
-    m->addAction(view_timecode_view_nondropframe_item_);
-  } else {
-    m->addAction(view_timecode_view_nondropframe_item_);
-  }
   m->addAction(view_timecode_view_seconds_item_);
   m->addAction(view_timecode_view_frames_item_);
   m->addAction(view_timecode_view_milliseconds_item_);
 }
 
-void MenuShared::AboutToShowTimeRulerActions()
+void MenuShared::AboutToShowTimeRulerActions(const rational& timebase)
 {
   QList<QAction*> timecode_display_actions = frame_view_mode_group_->actions();
+  Timecode::Display current_timecode_display = Core::instance()->GetTimecodeDisplay();
+
+  // Only show the drop-frame option if the timebase is drop-frame
+  view_timecode_view_dropframe_item_->setVisible(!timebase.isNull() && Timecode::TimebaseIsDropFrame(timebase));
+
+  if (!view_timecode_view_dropframe_item_->isVisible() && current_timecode_display == Timecode::kTimecodeDropFrame) {
+    // If the current setting is drop-frame, correct to non-drop frame
+    current_timecode_display = Timecode::kTimecodeNonDropFrame;
+  }
+
   foreach (QAction* a, timecode_display_actions) {
-    if (a->data() == Core::instance()->GetTimecodeDisplay()) {
+    if (a->data() == current_timecode_display) {
       a->setChecked(true);
       break;
     }

app/widget/menu/menushared.h

@@ -46,9 +46,9 @@ public:
   void AddItemsForInOutMenu(Menu* m);
   void AddColorCodingMenu(Menu* m);
   void AddItemsForClipEditMenu(Menu* m);
-  void AddItemsForTimeRulerMenu(Menu* m, const rational& timebase);
+  void AddItemsForTimeRulerMenu(Menu* m);
 
-  void AboutToShowTimeRulerActions();
+  void AboutToShowTimeRulerActions(const rational& timebase);
 
   static MenuShared* instance();
 

app/widget/nodeparamview/nodeparamviewwidgetbridge.cpp

@@ -238,7 +238,7 @@ void NodeParamViewWidgetBridge::SetInputValueInternal(const QVariant &value, int
   }
 }
 
-void NodeParamViewWidgetBridge::ProcessSlider(SliderBase *slider, const QVariant &value)
+void NodeParamViewWidgetBridge::ProcessSlider(NumericSliderBase *slider, const QVariant &value)
 {
   rational node_time = GetCurrentTimeAsNodeTime();
 
@@ -406,7 +406,7 @@ void NodeParamViewWidgetBridge::CreateSliders(int count)
 {
   for (int i=0;i<count;i++) {
     T* fs = new T();
-    fs->SetDefaultValue(input_.GetSplitDefaultValueForTrack(i));
+    fs->SliderBase::SetDefaultValue(input_.GetSplitDefaultValueForTrack(i));
     fs->SetLadderElementCount(2);
     widgets_.append(fs);
     connect(fs, &T::ValueChanged, this, &NodeParamViewWidgetBridge::WidgetCallback);
@@ -758,6 +758,22 @@ void NodeParamViewWidgetBridge::PropertyChanged(const QString& input, const QStr
     }
   }
 
+  if (data_type == NodeValue::kRational) {
+    if (key == QStringLiteral("view")) {
+      RationalSlider::DisplayType display_type = static_cast<RationalSlider::DisplayType>(value.toInt());
+
+      foreach (QWidget* w, widgets_) {
+        static_cast<RationalSlider*>(w)->SetDisplayType(display_type);
+      }
+    } else if (key == QStringLiteral("viewlock")) {
+      bool locked = value.toBool();
+
+      foreach (QWidget* w, widgets_) {
+        static_cast<RationalSlider*>(w)->SetLockDisplayType(locked);
+      }
+    }
+  }
+
   // Parameters for files
   if (data_type == NodeValue::kFile) {
     FileField* ff = static_cast<FileField*>(widgets_.first());

app/widget/nodeparamview/nodeparamviewwidgetbridge.h

@@ -24,7 +24,7 @@
 #include <QObject>
 
 #include "node/inputdragger.h"
-#include "widget/slider/sliderbase.h"
+#include "widget/slider/base/numericsliderbase.h"
 #include "widget/timetarget/timetarget.h"
 
 namespace olive {
@@ -64,7 +64,7 @@ private:
 
   void SetInputValueInternal(const QVariant& value, int track, MultiUndoCommand *command);
 
-  void ProcessSlider(SliderBase* slider, const QVariant& value);
+  void ProcessSlider(NumericSliderBase* slider, const QVariant& value);
 
   template <typename T>
   void CreateSliders(int count);

app/widget/slider/CMakeLists.txt

@@ -14,6 +14,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+add_subdirectory(base)
+
 set(OLIVE_SOURCES
   ${OLIVE_SOURCES}
   widget/slider/floatslider.h
@@ -22,12 +24,6 @@ set(OLIVE_SOURCES
   widget/slider/integerslider.cpp
   widget/slider/rationalslider.h
   widget/slider/rationalslider.cpp
-  widget/slider/sliderbase.h
-  widget/slider/sliderbase.cpp
-  widget/slider/sliderlabel.h
-  widget/slider/sliderlabel.cpp
-  widget/slider/sliderladder.h
-  widget/slider/sliderladder.cpp
   widget/slider/stringslider.h
   widget/slider/stringslider.cpp
   widget/slider/timeslider.h

app/widget/slider/base/CMakeLists.txt

@@ -0,0 +1,30 @@
+# Olive - Non-Linear Video Editor
+# Copyright (C) 2020 Olive Team
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+set(OLIVE_SOURCES
+  ${OLIVE_SOURCES}
+  widget/slider/base/decimalsliderbase.h
+  widget/slider/base/decimalsliderbase.cpp
+  widget/slider/base/numericsliderbase.h
+  widget/slider/base/numericsliderbase.cpp
+  widget/slider/base/sliderbase.h
+  widget/slider/base/sliderbase.cpp
+  widget/slider/base/sliderlabel.h
+  widget/slider/base/sliderlabel.cpp
+  widget/slider/base/sliderladder.h
+  widget/slider/base/sliderladder.cpp
+  PARENT_SCOPE
+)

app/widget/slider/base/decimalsliderbase.cpp

@@ -0,0 +1,63 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "decimalsliderbase.h"
+
+namespace olive {
+
+#define super NumericSliderBase
+
+DecimalSliderBase::DecimalSliderBase(QWidget *parent) :
+  super(parent),
+  decimal_places_(2),
+  autotrim_decimal_places_(false)
+{
+
+}
+
+void DecimalSliderBase::SetAutoTrimDecimalPlaces(bool e)
+{
+  autotrim_decimal_places_ = e;
+
+  UpdateLabel();
+}
+
+QString DecimalSliderBase::FloatToString(double val, int decimal_places, bool autotrim_decimal_places)
+{
+  QString s = QString::number(val, 'f', decimal_places);
+
+  if (autotrim_decimal_places) {
+    while (s.endsWith('0')
+           && s.at(s.size() - 2).isDigit()) {
+      s = s.left(s.size() - 1);
+    }
+  }
+
+  return s;
+}
+
+void DecimalSliderBase::SetDecimalPlaces(int i)
+{
+  decimal_places_ = i;
+
+  UpdateLabel();
+}
+
+}

app/widget/slider/base/decimalsliderbase.h

@@ -0,0 +1,50 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef DECIMALSLIDERBASE_H
+#define DECIMALSLIDERBASE_H
+
+#include "numericsliderbase.h"
+
+namespace olive {
+
+class DecimalSliderBase : public NumericSliderBase
+{
+public:
+  DecimalSliderBase(QWidget* parent = nullptr);
+
+  int GetDecimalPlaces() const { return decimal_places_; }
+  void SetDecimalPlaces(int i);
+
+  bool GetAutoTrimDecimalPlaces() const { return autotrim_decimal_places_; };
+  void SetAutoTrimDecimalPlaces(bool e);
+
+  static QString FloatToString(double val, int decimal_places, bool autotrim_decimal_places);
+
+private:
+  int decimal_places_;
+
+  bool autotrim_decimal_places_;
+
+};
+
+}
+
+#endif // DECIMALSLIDERBASE_H

app/widget/slider/base/numericsliderbase.cpp

@@ -0,0 +1,203 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "numericsliderbase.h"
+
+#include "common/qtutils.h"
+#include "config/config.h"
+
+namespace olive {
+
+NumericSliderBase::NumericSliderBase(QWidget *parent) :
+  SliderBase(parent),
+  drag_ladder_(nullptr),
+  ladder_element_count_(0),
+  dragged_(false),
+  has_min_(false),
+  has_max_(false),
+  dragged_diff_(0),
+  drag_multiplier_(1.0),
+  setting_drag_value_(false)
+{
+  // Numeric sliders are draggable, so we have a cursor that indicates that
+  setCursor(Qt::SizeHorCursor);
+
+  connect(label(), &SliderLabel::LabelPressed, this, &NumericSliderBase::LabelPressed);
+}
+
+void NumericSliderBase::SetDragMultiplier(const double &d)
+{
+  drag_multiplier_ = d;
+}
+
+void NumericSliderBase::LabelPressed()
+{
+  // Generate width hint
+  drag_ladder_ = new SliderLadder(drag_multiplier_, ladder_element_count_, GetFormattedValueToString(99999999));
+  drag_ladder_->SetValue(GetFormattedValueToString());
+  drag_ladder_->show();
+
+  drag_start_value_ = GetValueInternal();
+
+  QMetaObject::invokeMethod(this, "RepositionLadder", Qt::QueuedConnection);
+
+  connect(drag_ladder_, &SliderLadder::DraggedByValue, this, &NumericSliderBase::LadderDragged);
+  connect(drag_ladder_, &SliderLadder::Released, this, &NumericSliderBase::LadderReleased);
+}
+
+void NumericSliderBase::LadderDragged(int value, double multiplier)
+{
+  dragged_ = true;
+
+  dragged_diff_ += value * drag_multiplier_ * multiplier;
+
+  // Store current value to try and prevent any unnecessary signalling if the value doesn't change
+  QVariant pre_set_value = GetValueInternal();
+
+  setting_drag_value_ = true;
+  SetValueInternal(AdjustDragDistanceInternal(drag_start_value_, dragged_diff_));
+  setting_drag_value_ = false;
+
+  if (GetValueInternal() != pre_set_value) {
+    // We retrieve the value instead of storing it ourselves because SetValueInternal may do extra
+    // processing (such as clamping).
+    drag_ladder_->SetValue(GetFormattedValueToString());
+
+    if (!UsingLadders()) {
+      RepositionLadder();
+    }
+
+    ValueSignalEvent(GetValueInternal());
+  }
+}
+
+void NumericSliderBase::LadderReleased()
+{
+  drag_ladder_->deleteLater();
+  drag_ladder_ = nullptr;
+  dragged_diff_ = 0;
+
+  if (dragged_) {
+    // This was a drag, send another value changed event
+    ValueSignalEvent(GetValueInternal());
+
+    dragged_ = false;
+  } else {
+    ShowEditor();
+  }
+}
+
+void NumericSliderBase::RepositionLadder()
+{
+  if (drag_ladder_) {
+    if (UsingLadders()) {
+      drag_ladder_->move(QCursor::pos() - QPoint(drag_ladder_->width()/2, drag_ladder_->height()/2));
+    } else {
+      QPoint label_global_pos = label()->mapToGlobal(label()->pos());
+      int text_width = QtUtils::QFontMetricsWidth(label()->fontMetrics(), label()->text());
+
+      if (label()->alignment() & Qt::AlignRight) {
+        label_global_pos.setX(label_global_pos.x() + label()->width() - text_width);
+      } else if (label()->alignment() & Qt::AlignHCenter) {
+        label_global_pos.setX(label_global_pos.x() + label()->width()/2 - text_width/2);
+      }
+
+      int ladder_x = label_global_pos.x() + text_width / 2 - drag_ladder_->width() / 2;
+      int ladder_y = label_global_pos.y() + label()->height() / 2 - drag_ladder_->height() / 2;
+
+      drag_ladder_->move(ladder_x, ladder_y);
+    }
+
+    drag_ladder_->StartListeningToMouseInput();
+  }
+}
+
+bool NumericSliderBase::IsDragging() const
+{
+  return drag_ladder_;
+}
+
+bool NumericSliderBase::UsingLadders() const
+{
+  return ladder_element_count_ > 0 && Config::Current()[QStringLiteral("UseSliderLadders")].toBool();
+}
+
+QVariant NumericSliderBase::AdjustValue(const QVariant &value) const
+{
+  // Clamps between min/max
+  if (has_min_ && ValueLessThan(value, min_value_)) {
+    return min_value_;
+  } else if (has_max_ && ValueGreaterThan(value, max_value_)) {
+    return max_value_;
+  }
+
+  return value;
+}
+
+void NumericSliderBase::SetOffset(const QVariant &v)
+{
+  offset_ = v;
+
+  UpdateLabel();
+}
+
+QVariant NumericSliderBase::AdjustDragDistanceInternal(const QVariant &start, const double &drag) const
+{
+  return start.toDouble() + drag;
+}
+
+void NumericSliderBase::SetMinimumInternal(const QVariant &v)
+{
+  min_value_ = v;
+  has_min_ = true;
+
+  // Limit value by this new minimum value
+  if (ValueLessThan(GetValueInternal(), min_value_)) {
+    SetValueInternal(min_value_);
+  }
+}
+
+void NumericSliderBase::SetMaximumInternal(const QVariant &v)
+{
+  max_value_ = v;
+  has_max_ = true;
+
+  // Limit value by this new maximum value
+  if (ValueGreaterThan(GetValueInternal(), max_value_)) {
+    SetValueInternal(max_value_);
+  }
+}
+
+bool NumericSliderBase::ValueGreaterThan(const QVariant &lhs, const QVariant &rhs) const
+{
+  return lhs.toDouble() > rhs.toDouble();
+}
+
+bool NumericSliderBase::ValueLessThan(const QVariant &lhs, const QVariant &rhs) const
+{
+  return lhs.toDouble() < rhs.toDouble();
+}
+
+bool NumericSliderBase::CanSetValue() const
+{
+  return !IsDragging() || setting_drag_value_;
+}
+
+}

app/widget/slider/base/numericsliderbase.h

@@ -0,0 +1,103 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef NUMERICSLIDERBASE_H
+#define NUMERICSLIDERBASE_H
+
+#include "sliderbase.h"
+
+namespace olive {
+
+class NumericSliderBase : public SliderBase
+{
+  Q_OBJECT
+public:
+  NumericSliderBase(QWidget *parent = nullptr);
+
+  void SetLadderElementCount(int b)
+  {
+    ladder_element_count_ = b;
+  }
+
+  void SetDragMultiplier(const double& d);
+
+  void SetOffset(const QVariant& v);
+
+  bool IsDragging() const;
+
+protected:
+  const QVariant& GetOffset() const
+  {
+    return offset_;
+  }
+
+  virtual QVariant AdjustDragDistanceInternal(const QVariant &start, const double &drag) const;
+
+  void SetMinimumInternal(const QVariant& v);
+
+  void SetMaximumInternal(const QVariant& v);
+
+  virtual bool ValueGreaterThan(const QVariant& lhs, const QVariant& rhs) const;
+
+  virtual bool ValueLessThan(const QVariant& lhs, const QVariant& rhs) const;
+
+  virtual bool CanSetValue() const override;
+
+private:
+  bool UsingLadders() const;
+
+  virtual QVariant AdjustValue(const QVariant& value) const override;
+
+  SliderLadder* drag_ladder_;
+
+  int ladder_element_count_;
+
+  bool dragged_;
+
+  bool has_min_;
+  QVariant min_value_;
+
+  bool has_max_;
+  QVariant max_value_;
+
+  double dragged_diff_;
+
+  QVariant drag_start_value_;
+
+  QVariant offset_;
+
+  double drag_multiplier_;
+
+  bool setting_drag_value_;
+
+private slots:
+  void LabelPressed();
+
+  void RepositionLadder();
+
+  void LadderDragged(int value, double multiplier);
+
+  void LadderReleased();
+
+};
+
+}
+
+#endif // NUMERICSLIDERBASE_H

app/widget/slider/base/sliderbase.cpp

@@ -0,0 +1,230 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2020 Olive Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#include "sliderbase.h"
+
+#include <QDebug>
+#include <QEvent>
+#include <QMessageBox>
+
+#include "common/qtutils.h"
+#include "core.h"
+#include "window/mainwindow/mainwindow.h"
+
+namespace olive {
+
+#define super QStackedWidget
+
+SliderBase::SliderBase(QWidget *parent) :
+  super(parent),
+  tristate_(false),
+  format_plural_(false)
+{
+  // Standard (non-numeric) sliders are not draggable, so we indicate as such
+  setCursor(Qt::PointingHandCursor);
+
+  setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Maximum);
+
+  label_ = new SliderLabel(this);
+  addWidget(label_);
+
+  editor_ = new FocusableLineEdit(this);
+  addWidget(editor_);
+
+  connect(label_, &SliderLabel::focused, this, &SliderBase::ShowEditor);
+  connect(label_, &SliderLabel::RequestReset, this, &SliderBase::ResetValue);
+  connect(editor_, &FocusableLineEdit::Confirmed, this, &SliderBase::LineEditConfirmed);
+  connect(editor_, &FocusableLineEdit::Cancelled, this, &SliderBase::LineEditCancelled);
+}
+
+void SliderBase::SetAlignment(Qt::Alignment alignment)
+{
+  label_->setAlignment(alignment);
+}
+
+bool SliderBase::IsTristate() const
+{
+  return tristate_;
+}
+
+void SliderBase::SetTristate()
+{
+  tristate_ = true;
+  UpdateLabel();
+}
+
+const QVariant &SliderBase::GetValueInternal() const
+{
+  return value_;
+}
+
+void SliderBase::SetValueInternal(const QVariant &v)
+{
+  if (!CanSetValue()) {
+    return;
+  }
+
+  value_ = AdjustValue(v);
+
+  // Disable tristate
+  tristate_ = false;
+
+  UpdateLabel();
+}
+
+void SliderBase::SetDefaultValue(const QVariant &v)
+{
+  default_value_ = v;
+}
+
+void SliderBase::changeEvent(QEvent *e)
+{
+  if (e->type() == QEvent::LanguageChange) {
+    UpdateLabel();
+  }
+  super::changeEvent(e);
+}
+
+void SliderBase::UpdateLabel()
+{
+  label_->setText(tristate_ ? tr("---") : GetFormattedValueToString());
+}
+
+QVariant SliderBase::AdjustValue(const QVariant &value) const
+{
+  return value;
+}
+
+bool SliderBase::CanSetValue() const
+{
+  return true;
+}
+
+void SliderBase::ValueSignalEvent(const QVariant &value)
+{
+  Q_UNUSED(value)
+}
+
+void SliderBase::ShowEditor()
+{
+  // This was a simple click
+  // Load label's text into editor
+  editor_->setText(ValueToString(value_));
+
+  // Show editor
+  setCurrentWidget(editor_);
+
+  // Select all text in the editor
+  editor_->setFocus();
+  editor_->selectAll();
+}
+
+void SliderBase::LineEditConfirmed()
+{
+  bool is_valid = true;
+  QVariant test_val = StringToValue(editor_->text(), &is_valid);
+
+  // Ensure editor doesn't signal that the focus is lost
+  editor_->blockSignals(true);
+  label_->blockSignals(true);
+
+  if (is_valid) {
+    SetValueInternal(test_val);
+
+    setCurrentWidget(label_);
+
+    ValueSignalEvent(value_);
+  } else {
+    QMessageBox::critical(this,
+                          tr("Invalid Value"),
+                          tr("The entered value is not valid for this field."),
+                          QMessageBox::Ok);
+
+    // Refocus editor
+    editor_->setFocus();
+  }
+
+  editor_->blockSignals(false);
+  label_->blockSignals(false);
+}
+
+void SliderBase::LineEditCancelled()
+{
+  // Ensure editor doesn't signal that the focus is lost
+  editor_->blockSignals(true);
+  label_->blockSignals(true);
+
+  // Set widget back to label
+  setCurrentWidget(label_);
+
+  editor_->blockSignals(false);
+  label_->blockSignals(false);
+}
+
+void SliderBase::ResetValue()
+{
+  if (default_value_.isValid()) {
+    SetValueInternal(default_value_);
+    ValueSignalEvent(value_);
+  }
+}
+
+void SliderBase::SetFormat(const QString &s, const bool plural)
+{
+  custom_format_ = s;
+  format_plural_ = plural;
+  UpdateLabel();
+}
+
+void SliderBase::ClearFormat()
+{
+  custom_format_.clear();
+  UpdateLabel();
+}
+
+bool SliderBase::IsFormatPlural() const
+{
+  return format_plural_;
+}
+
+QString SliderBase::GetFormat() const
+{
+  if (custom_format_.isEmpty()) {
+    return QStringLiteral("%1");
+  } else {
+    return custom_format_;
+  }
+}
+
+QString SliderBase::GetFormattedValueToString() const
+{
+  return GetFormattedValueToString(GetValueInternal());
+}
+
+QString SliderBase::GetFormattedValueToString(const QVariant &v) const
+{
+  if (format_plural_) {
+    return tr(GetFormat().toUtf8().constData(), nullptr, v.toInt());
+  } else {
+    return GetFormat().arg(ValueToString(v));
+  }
+}
+
+}

app/widget/slider/base/sliderbase.h

@@ -28,84 +28,57 @@
 #include "widget/focusablelineedit/focusablelineedit.h"
 
 namespace olive {
+
 class SliderBase : public QStackedWidget
 {
   Q_OBJECT
 public:
-  enum Mode {
+  SliderBase(QWidget* parent = nullptr);
-    kString,
-    kInteger,
-    kFloat,
-    kRational
-  };
-
-  SliderBase(Mode mode, QWidget* parent = nullptr);
-
-  void SetDragMultiplier(const double& d);
-
-  void SetRequireValidInput(bool e);
 
   void SetAlignment(Qt::Alignment alignment);
 
-  void SetDefaultValue(const QVariant& v);
-
-  const QVariant& GetOffset() const
-  {
-    return offset_;
-  }
-
-  void SetOffset(const QVariant& v);
-
   bool IsTristate() const;
   void SetTristate();
 
-  bool IsDragging() const;
+  void SetFormat(const QString& s, const bool plural = false);
-
-  void SetFormat(const QString& s, const bool plural=false);
   void ClearFormat();
 
   bool IsFormatPlural() const;
 
-  void SetLadderElementCount(int b)
+  void SetDefaultValue(const QVariant& v);
-  {
-    ladder_element_count_ = b;
-  }
 
-signals:
+  QString GetFormattedValueToString(const QVariant& v) const;
-  void ValueChanged(QVariant v);
+
+public slots:
+  void ShowEditor();
+
+protected slots:
+  void UpdateLabel();
 
 protected:
-  const QVariant& Value() const;
+  const QVariant& GetValueInternal() const;
 
-  void SetValue(const QVariant& v);
+  void SetValueInternal(const QVariant& v);
-
-  void SetMinimumInternal(const QVariant& v);
-
-  void SetMaximumInternal(const QVariant& v);
-
-  void UpdateLabel(const QVariant& v);
-
-  QLabel* label() { return label_; }
-
-  virtual double AdjustDragDistanceInternal(const double& start, const double& drag);
-
-  virtual QString ValueToString(const QVariant &v) = 0;
-
-  virtual QVariant StringToValue(const QString& s, bool* ok) = 0;
-
-  virtual void changeEvent(QEvent* e) override;
-
-  void ForceLabelUpdate();
-
-  double drag_multiplier_;
-
-private:
-  const QVariant& ClampValue(const QVariant& v);
 
   QString GetFormat() const;
 
-  bool UsingLadders() const;
+  QString GetFormattedValueToString() const;
 
+  SliderLabel* label() { return label_; }
+
+  virtual QString ValueToString(const QVariant &v) const = 0;
+
+  virtual QVariant StringToValue(const QString& s, bool* ok) const = 0;
+
+  virtual QVariant AdjustValue(const QVariant& value) const;
+
+  virtual bool CanSetValue() const;
+
+  virtual void ValueSignalEvent(const QVariant& value) = 0;
+
+  virtual void changeEvent(QEvent* e) override;
+
+private:
   SliderLabel* label_;
 
   FocusableLineEdit* editor_;
@@ -113,51 +86,19 @@ private:
   QVariant value_;
   QVariant default_value_;
 
-  bool has_min_;
-  QVariant min_value_;
-
-  bool has_max_;
-  QVariant max_value_;
-
-  Mode mode_;
-
-  double dragged_diff_;
-
-  QVariant temp_dragged_value_;
-  QVariant clamped_temp_dragged_value_;
-
-  QVariant offset_;
-
-  bool require_valid_input_;
-
   bool tristate_;
 
   QString custom_format_;
 
   bool format_plural_;
 
-  SliderLadder* drag_ladder_;
-
-  int ladder_element_count_;
-
-  bool dragged_;
-
 private slots:
-  void ShowEditor();
-
-  void LabelPressed();
-
-  void LadderDragged(int value, double multiplier);
-
-  void LadderReleased();
-
   void LineEditConfirmed();
 
   void LineEditCancelled();
 
   void ResetValue();
 
-  void RepositionLadder();
 };
 
 }

app/widget/slider/base/sliderlabel.cpp

@@ -63,6 +63,15 @@ void SliderLabel::mousePressEvent(QMouseEvent *e)
   }
 }
 
+void SliderLabel::mouseReleaseEvent(QMouseEvent *e)
+{
+  if (e->button() == Qt::LeftButton) {
+    if (!(e->modifiers() & Qt::AltModifier)) {
+      emit LabelReleased();
+    }
+  }
+}
+
 void SliderLabel::focusInEvent(QFocusEvent *event)
 {
   QWidget::focusInEvent(event);

app/widget/slider/base/sliderlabel.h

@@ -34,13 +34,17 @@ public:
   SliderLabel(QWidget* parent);
 
 protected:
-  virtual void mousePressEvent(QMouseEvent *ev) override;
+  virtual void mousePressEvent(QMouseEvent *e) override;
+
+  virtual void mouseReleaseEvent(QMouseEvent *e) override;
 
   virtual void focusInEvent(QFocusEvent *event) override;
 
 signals:
   void LabelPressed();
 
+  void LabelReleased();
+
   void focused();
 
   void RequestReset();

app/widget/slider/base/sliderladder.cpp

@@ -38,8 +38,7 @@
 namespace olive {
 
 SliderLadder::SliderLadder(double drag_multiplier, int nb_outer_values, QString width_hint, QWidget* parent) :
-  QFrame(parent, Qt::Popup),
+  QFrame(parent, Qt::Popup)
-  width_hint_(width_hint)
 {
   QVBoxLayout* layout = new QVBoxLayout(this);
   layout->setMargin(0);
@@ -53,17 +52,17 @@ SliderLadder::SliderLadder(double drag_multiplier, int nb_outer_values, QString
   }
 
   for (int i=nb_outer_values-1;i>=0;i--) {
-    elements_.append(new SliderLadderElement(qPow(10, i + 1) * drag_multiplier, width_hint_));
+    elements_.append(new SliderLadderElement(qPow(10, i + 1) * drag_multiplier, width_hint));
   }
 
   // Create center entry
-  SliderLadderElement* start_element = new SliderLadderElement(drag_multiplier, width_hint_);
+  SliderLadderElement* start_element = new SliderLadderElement(drag_multiplier, width_hint);
   active_element_ = elements_.size();
   start_element->SetHighlighted(true);
   elements_.append(start_element);
 
   for (int i=0;i<nb_outer_values;i++) {
-    elements_.append(new SliderLadderElement(qPow(10, -i - 1) * drag_multiplier, width_hint_));
+    elements_.append(new SliderLadderElement(qPow(10, -i - 1) * drag_multiplier, width_hint));
   }
 
   foreach (SliderLadderElement* e, elements_) {
@@ -232,7 +231,7 @@ bool SliderLadder::UsingLadders() const
   return elements_.size() > 1;
 }
 
-  SliderLadderElement::SliderLadderElement(const double &multiplier, QString width_hint, QWidget *parent) :
+SliderLadderElement::SliderLadderElement(const double &multiplier, QString width_hint, QWidget *parent) :
   QWidget(parent),
   multiplier_(multiplier),
   highlighted_(false),

app/widget/slider/base/sliderladder.h

@@ -94,8 +94,6 @@ private:
 
   QTimer drag_timer_;
 
-  QString width_hint_;
-
 private slots:
   void TimerUpdate();
 

app/widget/slider/floatslider.cpp

@@ -26,25 +26,28 @@
 
 namespace olive {
 
+#define super DecimalSliderBase
+
 FloatSlider::FloatSlider(QWidget *parent) :
-  SliderBase(kFloat, parent),
+  super(parent),
-  display_type_(kNormal),
+  display_type_(kNormal)
-  decimal_places_(1),
-  autotrim_decimal_places_(false)
 {
   SetValue(0.0);
-
-  connect(this, SIGNAL(ValueChanged(QVariant)), this, SLOT(ConvertValue(QVariant)));
 }
 
-double FloatSlider::GetValue()
+double FloatSlider::GetValue() const
 {
-  return Value().toDouble();
+  return GetValueInternal().toDouble();
 }
 
 void FloatSlider::SetValue(const double &d)
 {
-  SliderBase::SetValue(d);
+  SetValueInternal(d);
+}
+
+void FloatSlider::SetDefaultValue(const double &d)
+{
+  super::SetDefaultValue(d);
 }
 
 void FloatSlider::SetMinimum(const double &d)
@@ -57,13 +60,6 @@ void FloatSlider::SetMaximum(const double &d)
   SetMaximumInternal(d);
 }
 
-void FloatSlider::SetDecimalPlaces(int i)
-{
-  decimal_places_ = i;
-
-  ForceLabelUpdate();
-}
-
 void FloatSlider::SetDisplayType(const FloatSlider::DisplayType &type)
 {
   display_type_ = type;
@@ -81,13 +77,6 @@ void FloatSlider::SetDisplayType(const FloatSlider::DisplayType &type)
   }
 }
 
-void FloatSlider::SetAutoTrimDecimalPlaces(bool e)
-{
-  autotrim_decimal_places_ = e;
-
-  ForceLabelUpdate();
-}
-
 QString FloatSlider::ValueToString(double val, FloatSlider::DisplayType display, int decimal_places, bool autotrim_decimal_places)
 {
   switch (display) {
@@ -110,24 +99,15 @@ QString FloatSlider::ValueToString(double val, FloatSlider::DisplayType display,
     break;
   }
 
-  QString s = QString::number(val, 'f', decimal_places);
+  return FloatToString(val, decimal_places, autotrim_decimal_places);
-
-  if (autotrim_decimal_places) {
-    while (s.endsWith('0')
-           && s.at(s.size() - 2).isDigit()) {
-      s = s.left(s.size() - 1);
-    }
-  }
-
-  return s;
 }
 
-QString FloatSlider::ValueToString(const QVariant &v)
+QString FloatSlider::ValueToString(const QVariant &v) const
 {
-  return ValueToString(v.toDouble() + GetOffset().toDouble(), display_type_, decimal_places_, autotrim_decimal_places_);
+  return ValueToString(v.toDouble() + GetOffset().toDouble(), display_type_, GetDecimalPlaces(), GetAutoTrimDecimalPlaces());
 }
 
-QVariant FloatSlider::StringToValue(const QString &s, bool *ok)
+QVariant FloatSlider::StringToValue(const QString &s, bool *ok) const
 {
   switch (display_type_) {
   case kNormal:
@@ -171,7 +151,7 @@ QVariant FloatSlider::StringToValue(const QString &s, bool *ok)
   return s.toDouble(ok) - GetOffset().toDouble();
 }
 
-double FloatSlider::AdjustDragDistanceInternal(const double &start, const double &drag)
+QVariant FloatSlider::AdjustDragDistanceInternal(const QVariant &start, const double &drag) const
 {
   switch (display_type_) {
   case kNormal:
@@ -179,22 +159,22 @@ double FloatSlider::AdjustDragDistanceInternal(const double &start, const double
     break;
   case kDecibel:
   {
-    double current_db = LinearToDecibel(start);
+    double current_db = LinearToDecibel(start.toDouble());
     current_db += drag;
     double adjusted_linear = DecibelToLinear(current_db);
 
     return adjusted_linear;
   }
   case kPercentage:
-    return SliderBase::AdjustDragDistanceInternal(start, drag * 0.01);
+    return super::AdjustDragDistanceInternal(start, drag * 0.01);
   }
 
-  return SliderBase::AdjustDragDistanceInternal(start, drag);
+  return super::AdjustDragDistanceInternal(start, drag);
 }
 
-void FloatSlider::ConvertValue(QVariant v)
+void FloatSlider::ValueSignalEvent(const QVariant &value)
 {
-  emit ValueChanged(v.toDouble());
+  emit ValueChanged(value.toDouble());
 }
 
 double FloatSlider::LinearToDecibel(double linear)

app/widget/slider/floatslider.h

@@ -21,11 +21,11 @@
 #ifndef FLOATSLIDER_H
 #define FLOATSLIDER_H
 
-#include "sliderbase.h"
+#include "base/decimalsliderbase.h"
 
 namespace olive {
 
-class FloatSlider : public SliderBase
+class FloatSlider : public DecimalSliderBase
 {
   Q_OBJECT
 public:
@@ -37,35 +37,32 @@ public:
     kPercentage
   };
 
-  double GetValue();
+  double GetValue() const;
 
   void SetValue(const double& d);
 
+  void SetDefaultValue(const double& d);
+
   void SetMinimum(const double& d);
 
   void SetMaximum(const double& d);
 
-  void SetDecimalPlaces(int i);
-
   void SetDisplayType(const DisplayType& type);
 
-  void SetAutoTrimDecimalPlaces(bool e);
-
   static QString ValueToString(double val, DisplayType display, int decimal_places, bool autotrim_decimal_places);
 
 protected:
-  virtual QString ValueToString(const QVariant& v) override;
+  virtual QString ValueToString(const QVariant& v) const override;
 
-  virtual QVariant StringToValue(const QString& s, bool* ok) override;
+  virtual QVariant StringToValue(const QString& s, bool* ok) const override;
 
-  virtual double AdjustDragDistanceInternal(const double& start, const double& drag) override;
+  virtual QVariant AdjustDragDistanceInternal(const QVariant &start, const double &drag) const override;
+
+  virtual void ValueSignalEvent(const QVariant &value) override;
 
 signals:
   void ValueChanged(double);
 
-private slots:
-  void ConvertValue(QVariant v);
-
 private:
   static double LinearToDecibel(double linear);
 
@@ -73,10 +70,6 @@ private:
 
   DisplayType display_type_;
 
-  int decimal_places_;
-
-  bool autotrim_decimal_places_;
-
 };
 
 }

app/widget/slider/integerslider.cpp

@@ -22,22 +22,22 @@
 
 namespace olive {
 
+#define super NumericSliderBase
+
 IntegerSlider::IntegerSlider(QWidget* parent) :
-  SliderBase(kInteger, parent)
+  super(parent)
 {
   SetValue(0);
-
-  connect(this, SIGNAL(ValueChanged(QVariant)), this, SLOT(ConvertValue(QVariant)));
 }
 
 int64_t IntegerSlider::GetValue()
 {
-  return Value().toLongLong();
+  return GetValueInternal().toLongLong();
 }
 
 void IntegerSlider::SetValue(const int64_t &v)
 {
-  SliderBase::SetValue(QVariant::fromValue(v));
+  SetValueInternal(QVariant::fromValue(v));
 }
 
 void IntegerSlider::SetMinimum(const int64_t &d)
@@ -50,12 +50,17 @@ void IntegerSlider::SetMaximum(const int64_t &d)
   SetMaximumInternal(QVariant::fromValue(d));
 }
 
-QString IntegerSlider::ValueToString(const QVariant &v)
+void IntegerSlider::SetDefaultValue(const int64_t &d)
+{
+  super::SetDefaultValue(QVariant::fromValue(d));
+}
+
+QString IntegerSlider::ValueToString(const QVariant &v) const
 {
   return QString::number(v.toLongLong() + GetOffset().toLongLong());
 }
 
-QVariant IntegerSlider::StringToValue(const QString &s, bool *ok)
+QVariant IntegerSlider::StringToValue(const QString &s, bool *ok) const
 {
   bool valid;
 
@@ -76,9 +81,14 @@ QVariant IntegerSlider::StringToValue(const QString &s, bool *ok)
   return QVariant();
 }
 
-void IntegerSlider::ConvertValue(QVariant v)
+void IntegerSlider::ValueSignalEvent(const QVariant &value)
 {
-  emit ValueChanged(v.toInt());
+  emit ValueChanged(value.toInt());
+}
+
+QVariant IntegerSlider::AdjustDragDistanceInternal(const QVariant &start, const double &drag) const
+{
+  return qRound64(super::AdjustDragDistanceInternal(start, drag).toDouble());
 }
 
 }

app/widget/slider/integerslider.h

@@ -21,11 +21,11 @@
 #ifndef INTEGERSLIDER_H
 #define INTEGERSLIDER_H
 
-#include "sliderbase.h"
+#include "base/numericsliderbase.h"
 
 namespace olive {
 
-class IntegerSlider : public SliderBase
+class IntegerSlider : public NumericSliderBase
 {
   Q_OBJECT
 public:
@@ -39,16 +39,20 @@ public:
 
   void SetMaximum(const int64_t& d);
 
-protected:
+  void SetDefaultValue(const int64_t& d);
-  virtual QString ValueToString(const QVariant& v) override;
 
-  virtual QVariant StringToValue(const QString& s, bool* ok) override;
+protected:
+  virtual QString ValueToString(const QVariant& v) const override;
+
+  virtual QVariant StringToValue(const QString& s, bool* ok) const override;
+
+  virtual void ValueSignalEvent(const QVariant &value) override;
+
+  virtual QVariant AdjustDragDistanceInternal(const QVariant &start, const double &drag) const override;
 
 signals:
   void ValueChanged(int64_t);
 
-private slots:
-  void ConvertValue(QVariant v);
 };
 
 }

app/widget/slider/rationalslider.cpp

@@ -1,16 +1,21 @@
 /***
+
   Olive - Non-Linear Video Editor
-  Copyright (C) 2021 Olive Team
+  Copyright (C) 2020 Olive Team
+
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
+
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 ***/
 
 #include "rationalslider.h"
@@ -22,40 +27,33 @@
 
 namespace olive {
 
+#define super DecimalSliderBase
+
 RationalSlider::RationalSlider(QWidget *parent) :
-  SliderBase(SliderBase::kRational, parent),
+  super(parent),
-  display_type_(kTimecode),
-  decimal_places_(2),
-  autotrim_decimal_places_(false),
   lock_display_type_(false)
 {
-  connect(this, SIGNAL(ValueChanged(QVariant)), this, SLOT(ConvertValue(QVariant)));
+  connect(Core::instance(), &Core::TimecodeDisplayChanged, this, &RationalSlider::UpdateLabel);
-  connect(Core::instance(), &Core::TimecodeDisplayChanged, this, &RationalSlider::ChangeTimecodeDisplayType);
+  connect(SliderBase::label(), &SliderLabel::customContextMenuRequested, this, &RationalSlider::ShowDisplayTypeMenu);
-  connect(SliderBase::label(), &SliderLabel::customContextMenuRequested, this, &RationalSlider::changeDisplayType);
 
-  SetDisplayType(display_type_);
+  SetDisplayType(kFloat);
 
   SetValue(rational(0, 0));
 }
 
 rational RationalSlider::GetValue()
 {
-  return Value().value<rational>();
+  return GetValueInternal().value<rational>();
 }
 
 void RationalSlider::SetValue(const rational &d)
 {
-  SliderBase::SetValue(QVariant::fromValue(d));
+  SetValueInternal(QVariant::fromValue(d));
 }
 
 void RationalSlider::SetDefaultValue(const rational &r)
 {
-  SliderBase::SetDefaultValue(QVariant::fromValue(r));
+  super::SetDefaultValue(QVariant::fromValue(r));
-}
-
-void RationalSlider::SetDefaultValue(const QVariant &v) {
-  rational r = v.value<rational>();
-  SetDefaultValue(r);
 }
 
 void RationalSlider::SetMinimum(const rational &d)
@@ -68,42 +66,19 @@ void RationalSlider::SetMaximum(const rational &d)
   SetMaximumInternal(QVariant::fromValue(d));
 }
 
-void RationalSlider::SetDecimalPlaces(int i)
-{
-  decimal_places_ = i;
-
-  ForceLabelUpdate();
-}
-
 void RationalSlider::SetTimebase(const rational &timebase)
 {
   timebase_ = timebase;
 
   // Refresh label since we have a new timebase to generate a timecode with
-  UpdateLabel(Value());
+  UpdateLabel();
-}
-
-void RationalSlider::SetAutoTrimDecimalPlaces(bool e) {
-  autotrim_decimal_places_ = e;
-
-  ForceLabelUpdate();
 }
 
 void RationalSlider::SetDisplayType(const RationalSlider::DisplayType &type)
 {
   display_type_ = type;
 
-  switch (display_type_) {
+  UpdateLabel();
-    case kTimecode:
-      ClearFormat();
-      break;
-    case kTimestamp:
-      SetFormat("%1 Frames");
-      break;
-    case kFloat:
-      SetFormat("%1 s");
-      break;
-  }
 }
 
 void RationalSlider::SetLockDisplayType(bool e)
@@ -111,87 +86,130 @@ void RationalSlider::SetLockDisplayType(bool e)
   lock_display_type_ = e;
 }
 
-bool RationalSlider::LockDisplayType()
+bool RationalSlider::GetLockDisplayType()
 {
   return lock_display_type_;
 }
 
-QString RationalSlider::ValueToString(const QVariant &v)
+void RationalSlider::DisableDisplayType(RationalSlider::DisplayType type)
 {
-  double time = v.value<rational>().toDouble() + GetOffset().value<rational>().toDouble();
+  disabled_.append(type);
+}
+
+QString RationalSlider::ValueToString(const QVariant &v) const
+{
+  double val = v.value<rational>().toDouble() + GetOffset().value<rational>().toDouble();
 
   switch (display_type_) {
-    case kTimecode:
+  case kTime:
-      return Timecode::time_to_timecode(v.value<rational>(), timebase_, Core::instance()->GetTimecodeDisplay());
+    return Timecode::time_to_timecode(v.value<rational>(), timebase_, Core::instance()->GetTimecodeDisplay());
-    case kTimestamp:
+  case kFloat:
-      return QString::number(Timecode::time_to_timestamp(time, timebase_));
+    return FloatToString(val, GetDecimalPlaces(), GetAutoTrimDecimalPlaces());
-    case kFloat:
+  case kRational:
-    {
+    return v.value<rational>().toString();
-      QString s = QString::number(time, 'f', decimal_places_);
-
-      if (autotrim_decimal_places_) {
-        while (s.endsWith('0') && s.at(s.size() - 2).isDigit()) {
-          s = s.left(s.size() - 1);
-        }
-      }
-      return s;
-    }
   }
+
   return v.toString();
 }
 
-QVariant RationalSlider::StringToValue(const QString &s, bool *ok)
+QVariant RationalSlider::StringToValue(const QString &s, bool *ok) const
 {
   rational r;
   *ok = false;
 
   switch (display_type_) {
-    case kTimecode:
+  case kTime:
-    {
+  {
-      int t = Timecode::timecode_to_timestamp(s, timebase_, Core::instance()->GetTimecodeDisplay(), ok);
+    r = Timecode::timecode_to_time(s, timebase_, Core::instance()->GetTimecodeDisplay(), ok);
-      r = rational(t, timebase_.denominator());
+    break;
+  }
+  case kFloat:
+  {
+    // First, convert to a double
+    double d = s.toDouble(ok);
+    if (!(*ok)) {
       break;
     }
-    case kTimestamp:
+
-      r = rational(s.toInt(ok), timebase_.denominator());
+    // If double conversion succeeded, convert to a rational
-      break;
+    r = rational::fromDouble(d, ok);
-    case kFloat:
+    break;
-      r = rational::fromDouble(s.toDouble(ok));
+  }
-      if (!r.isNull()) {
+  case kRational:
-        *ok = true;
+    r = rational::fromString(s, ok);
-      }
+    break;
-      break;
   }
 
-  return QVariant::fromValue(r - GetOffset().value<rational>());
+  //return QVariant::fromValue(r - GetOffset().value<rational>());
+  return QVariant::fromValue(r);
 }
 
-double RationalSlider::AdjustDragDistanceInternal(const double &start, const double &drag)
+QVariant RationalSlider::AdjustDragDistanceInternal(const QVariant &start, const double &drag) const
 {
   // Assume we want smallest increment to be timebase or 1 frame
-  return start + drag*timebase_.toDouble();
+  return QVariant::fromValue(start.value<rational>() + rational::fromDouble(drag)*timebase_);
 }
 
-void RationalSlider::ConvertValue(QVariant v)
+void RationalSlider::ValueSignalEvent(const QVariant &v)
 {
   emit ValueChanged(v.value<rational>());
 }
 
-void RationalSlider::changeDisplayType()
+bool RationalSlider::ValueGreaterThan(const QVariant &lhs, const QVariant &rhs) const
 {
-  if (!LockDisplayType()) {
+  return lhs.value<rational>() > rhs.value<rational>();
-    Menu m(this);
+}
-    MenuShared::instance()->AddItemsForTimeRulerMenu(&m, timebase_);
-    MenuShared::instance()->AboutToShowTimeRulerActions();
 
+bool RationalSlider::ValueLessThan(const QVariant &lhs, const QVariant &rhs) const
+{
+  return lhs.value<rational>() < rhs.value<rational>();
+}
+
+void RationalSlider::ShowDisplayTypeMenu()
+{
+  Menu m(this);
+
+  if (!GetLockDisplayType()) {
+    if (!disabled_.contains(kFloat)) {
+      QAction* float_action = m.addAction(tr("Float"));
+      float_action->setData(kFloat);
+      connect(float_action, &QAction::triggered, this, &RationalSlider::SetDisplayTypeFromMenu);
+    }
+
+    if (!disabled_.contains(kRational)) {
+      QAction* rational_action = m.addAction(tr("Rational"));
+      rational_action->setData(kRational);
+      connect(rational_action, &QAction::triggered, this, &RationalSlider::SetDisplayTypeFromMenu);
+    }
+
+    if (!disabled_.contains(kTime)) {
+      QAction* time_action = m.addAction(tr("Time"));
+      time_action->setData(kTime);
+      connect(time_action, &QAction::triggered, this, &RationalSlider::SetDisplayTypeFromMenu);
+    }
+  }
+
+  if (display_type_ == kTime) {
+    if (!m.actions().isEmpty()) {
+      m.addSeparator();
+    }
+    MenuShared::instance()->AddItemsForTimeRulerMenu(&m);
+    MenuShared::instance()->AboutToShowTimeRulerActions(timebase_);
+  }
+
+  if (!m.actions().isEmpty()) {
     m.exec(QCursor::pos());
-    ForceLabelUpdate();
+    UpdateLabel();
   }
 }
 
-void RationalSlider::ChangeTimecodeDisplayType()
+void RationalSlider::SetDisplayTypeFromMenu()
 {
-  ForceLabelUpdate();
+  QAction* action = static_cast<QAction*>(sender());
+
+  DisplayType type = static_cast<DisplayType>(action->data().toInt());
+
+  SetDisplayType(type);
 }
 
 }

app/widget/slider/rationalslider.h

@@ -1,36 +1,40 @@
 /***
+
   Olive - Non-Linear Video Editor
-  Copyright (C) 2021 Olive Team
+  Copyright (C) 2020 Olive Team
+
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
+
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
+
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 ***/
 
 #ifndef RATIONALSLIDER_H
 #define RATIONALSLIDER_H
 
-#include "sliderbase.h"
-
 #include <QMouseEvent>
 
+#include "base/decimalsliderbase.h"
 #include "common/rational.h"
 
 namespace olive {
 
  /**
  * @brief A olive::rational based slider
- * 
+ *
  * A slider that can display rationals as either timecode (drop or non-drop), a timestamp (frames),
- * or a float (seconds). 
+ * or a float (seconds).
  */
-class RationalSlider : public SliderBase
+class RationalSlider : public DecimalSliderBase
 {
   Q_OBJECT
 public:
@@ -38,9 +42,9 @@ public:
    * @brief enum containing the possibly display types
    */
   enum DisplayType {
-    kTimecode,
+    kTime,
-    kTimestamp,
+    kFloat,
-    kFloat
+    kRational
   };
 
   RationalSlider(QWidget* parent = nullptr);
@@ -60,11 +64,6 @@ public:
    */
   void SetDefaultValue(const rational& r);
 
-    /**
-   * @brief Sets the sliders default value
-   */
-  void SetDefaultValue(const QVariant& v);
-
   /**
    * @brief Sets the sliders minimum value
    */
@@ -75,11 +74,6 @@ public:
    */
   void SetMaximum(const rational& d);
 
-  /**
-   * @brief Sets the number of decimal places the slider shows when displaying a float
-   */
-  void SetDecimalPlaces(int i);
-
   /**
    * @brief Sets the sliders timebase which is also the minimum increment of the slider
    */
@@ -98,40 +92,43 @@ public:
   /**
    * @brief Get whether the user can change the display type or not
    */
-  bool LockDisplayType();
+  bool GetLockDisplayType();
 
-  void SetAutoTrimDecimalPlaces(bool e);
+  /**
+   * @brief Hide display type in menu
+   */
+  void DisableDisplayType(DisplayType type);
 
 protected:
-  virtual QString ValueToString(const QVariant& v) override;
+  virtual QString ValueToString(const QVariant& v) const override;
 
-  virtual QVariant StringToValue(const QString& s, bool* ok) override;
+  virtual QVariant StringToValue(const QString& s, bool* ok) const override;
 
-  virtual double AdjustDragDistanceInternal(const double& start, const double& drag) override;
+  virtual QVariant AdjustDragDistanceInternal(const QVariant &start, const double &drag) const override;
+
+  virtual void ValueSignalEvent(const QVariant& v) override;
+
+  virtual bool ValueGreaterThan(const QVariant& lhs, const QVariant& rhs) const override;
+
+  virtual bool ValueLessThan(const QVariant& lhs, const QVariant& rhs) const override;
 
 signals:
   void ValueChanged(rational);
 
 private slots:
-  void ConvertValue(QVariant v);
+  void ShowDisplayTypeMenu();
 
-  void changeDisplayType();
+  void SetDisplayTypeFromMenu();
-
-  /**
-   * @brief Changes the timecodes display type (e.g. drop frome to none drop frame)
-   */
-  void ChangeTimecodeDisplayType();
 
 private:
   DisplayType display_type_;
 
-  int decimal_places_;
-
-  bool autotrim_decimal_places_;
-
   rational timebase_;
 
   bool lock_display_type_;
+
+  QVector<DisplayType> disabled_;
+
 };
 
 }

app/widget/slider/sliderbase.cpp

@@ -1,470 +0,0 @@
-/***
-
-  Olive - Non-Linear Video Editor
-  Copyright (C) 2020 Olive Team
-
-  This program is free software: you can redistribute it and/or modify
-  it under the terms of the GNU General Public License as published by
-  the Free Software Foundation, either version 3 of the License, or
-  (at your option) any later version.
-
-  This program is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-***/
-
-#include "sliderbase.h"
-
-#include <QDebug>
-#include <QEvent>
-#include <QMessageBox>
-
-#include "common/qtutils.h"
-#include "core.h"
-#include "window/mainwindow/mainwindow.h"
-
-namespace olive {
-
-SliderBase::SliderBase(Mode mode, QWidget *parent) :
-  QStackedWidget(parent),
-  drag_multiplier_(1.0),
-  has_min_(false),
-  has_max_(false),
-  mode_(mode),
-  dragged_diff_(0),
-  require_valid_input_(true),
-  tristate_(false),
-  format_plural_(false),
-  drag_ladder_(nullptr),
-  ladder_element_count_(0),
-  dragged_(false)
-{
-  setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Maximum);
-
-  label_ = new SliderLabel(this);
-
-  addWidget(label_);
-
-  editor_ = new FocusableLineEdit(this);
-  addWidget(editor_);
-
-  connect(label_, &SliderLabel::LabelPressed, this, &SliderBase::LabelPressed);
-  connect(label_, &SliderLabel::focused, this, &SliderBase::ShowEditor);
-  connect(label_, &SliderLabel::RequestReset, this, &SliderBase::ResetValue);
-  connect(editor_, &FocusableLineEdit::Confirmed, this, &SliderBase::LineEditConfirmed);
-  connect(editor_, &FocusableLineEdit::Cancelled, this, &SliderBase::LineEditCancelled);
-
-  // Set valid cursor based on mode
-  switch (mode_) {
-  case kString:
-    setCursor(Qt::PointingHandCursor);
-    break;
-  case kInteger:
-  case kFloat:
-  case kRational:
-    setCursor(Qt::SizeHorCursor);
-    break;
-  }
-}
-
-void SliderBase::SetDragMultiplier(const double &d)
-{
-  drag_multiplier_ = d;
-}
-
-void SliderBase::SetRequireValidInput(bool e)
-{
-  require_valid_input_ = e;
-}
-
-void SliderBase::SetAlignment(Qt::Alignment alignment)
-{
-  label_->setAlignment(alignment);
-}
-
-bool SliderBase::IsTristate() const
-{
-  return tristate_;
-}
-
-void SliderBase::SetTristate()
-{
-  tristate_ = true;
-  UpdateLabel(0);
-}
-
-bool SliderBase::IsDragging() const
-{
-  return drag_ladder_;
-}
-
-void SliderBase::SetFormat(const QString &s, const bool plural)
-{
-  custom_format_ = s;
-  format_plural_ = plural;
-  ForceLabelUpdate();
-}
-
-void SliderBase::ClearFormat()
-{
-  custom_format_.clear();
-  ForceLabelUpdate();
-}
-
-bool SliderBase::IsFormatPlural() const
-{
-  return format_plural_;
-}
-
-void SliderBase::ForceLabelUpdate()
-{
-  UpdateLabel(Value());
-}
-
-const QVariant &SliderBase::Value() const
-{
-  if (IsDragging()) {
-    return clamped_temp_dragged_value_;
-  }
-
-  return value_;
-}
-
-void SliderBase::SetValue(const QVariant &v)
-{
-  if (IsDragging()) {
-    return;
-  }
-
-  value_ = ClampValue(v);
-
-  // Disable tristate
-  tristate_ = false;
-
-  UpdateLabel(value_);
-}
-
-void SliderBase::SetDefaultValue(const QVariant &v)
-{
-  default_value_ = v;
-}
-
-void SliderBase::SetOffset(const QVariant &v)
-{
-  offset_ = v;
-
-  UpdateLabel(value_);
-}
-
-void SliderBase::SetMinimumInternal(const QVariant &v)
-{
-  min_value_ = v;
-  has_min_ = true;
-
-  // Limit value by this new minimum value
-  if (mode_ == kRational) {
-    if (value_.value<rational>().toDouble() < min_value_.value<rational>().toDouble()) {
-      SetValue(min_value_);
-    }
-  } else {
-    if (value_.toDouble() < min_value_.toDouble()) {
-      SetValue(min_value_);
-    }
-  }
-}
-
-void SliderBase::SetMaximumInternal(const QVariant &v)
-{
-  max_value_ = v;
-  has_max_ = true;
-
-  // Limit value by this new maximum value
-  if (mode_ == kRational) {
-    if (value_.value<rational>().toDouble() > max_value_.value<rational>().toDouble()) {
-      SetValue(max_value_);
-    }
-  } else {
-    if (value_.toDouble() > max_value_.toDouble()) {
-      SetValue(max_value_);
-    }
-  }
-}
-
-void SliderBase::changeEvent(QEvent *e)
-{
-  if (e->type() == QEvent::LanguageChange) {
-    UpdateLabel(value_);
-  }
-  QStackedWidget::changeEvent(e);
-}
-
-const QVariant &SliderBase::ClampValue(const QVariant &v)
-{
-  double value, min, max;
-    
-  if (mode_ == kRational) {
-    value = v.value<rational>().toDouble();
-    min = min_value_.value<rational>().toDouble();
-    max = max_value_.value<rational>().toDouble();
-  } else {
-    value = v.toDouble();
-    min = min_value_.toDouble();
-    max = max_value_.toDouble();
-  }
-    
-  if (has_min_ && value < min) {
-    return min_value_;
-  }else if (has_max_ && value > max) {
-    return max_value_;
-  }
-
-  return v;
-}
-
-QString SliderBase::GetFormat() const
-{
-  if (custom_format_.isEmpty()) {
-    return QStringLiteral("%1");
-  } else {
-    return custom_format_;
-  }
-}
-
-bool SliderBase::UsingLadders() const
-{
-  return ladder_element_count_ > 0 && Config::Current()[QStringLiteral("UseSliderLadders")].toBool();
-}
-
-void SliderBase::UpdateLabel(const QVariant &v)
-{
-  if (tristate_) {
-    label_->setText("---");
-  } else if (format_plural_) {
-    label_->setText(tr(GetFormat().toUtf8().constData(), nullptr, v.toInt()));
-  } else {
-    label_->setText(GetFormat().arg(ValueToString(v)));
-  }
-}
-
-double SliderBase::AdjustDragDistanceInternal(const double &start, const double &drag)
-{
-  return start + drag;
-}
-
-QString SliderBase::ValueToString(const QVariant &v)
-{
-  return v.toString();
-}
-
-QVariant SliderBase::StringToValue(const QString &s, bool *ok)
-{
-  *ok = true;
-  return s;
-}
-
-void SliderBase::ShowEditor()
-{
-  // This was a simple click
-  // Load label's text into editor
-  editor_->setText(ValueToString(value_));
-
-  // Show editor
-  setCurrentWidget(editor_);
-
-  // Select all text in the editor
-  editor_->setFocus();
-  editor_->selectAll();
-}
-
-void SliderBase::LabelPressed()
-{
-  switch (mode_) {
-  case kString:
-    // No dragging supported for strings
-    break;
-  case kInteger:
-  case kFloat:
-  case kRational:
-  {
-    if (mode_ == kRational) {
-      drag_ladder_ = new SliderLadder(drag_multiplier_, ladder_element_count_, "00:00:00:00");
-    } else {
-      drag_ladder_ = new SliderLadder(drag_multiplier_, ladder_element_count_, "00000000");
-    }
-    drag_ladder_->SetValue(ValueToString(value_));
-    drag_ladder_->show();
-
-    QMetaObject::invokeMethod(this, "RepositionLadder", Qt::QueuedConnection);
-
-    connect(drag_ladder_, &SliderLadder::DraggedByValue, this, &SliderBase::LadderDragged);
-    connect(drag_ladder_, &SliderLadder::Released, this, &SliderBase::LadderReleased);
-    break;
-  }
-  }
-}
-
-void SliderBase::LadderDragged(int value, double multiplier)
-{
-  dragged_ = true;
-
-  switch (mode_) {
-  case kString:
-    // No dragging supported for strings
-    break;
-  case kInteger:
-  case kFloat:
-  {
-    dragged_diff_ += value * drag_multiplier_ * multiplier;
-
-    double drag_val = AdjustDragDistanceInternal(value_.toDouble(), dragged_diff_);
-
-    // Update temporary value
-    if (mode_ == kInteger) {
-      temp_dragged_value_ = qRound(drag_val);
-    } else {
-      temp_dragged_value_ = drag_val;
-    }
-
-    clamped_temp_dragged_value_ = ClampValue(temp_dragged_value_);
-
-    UpdateLabel(clamped_temp_dragged_value_);
-
-    drag_ladder_->SetValue(ValueToString(clamped_temp_dragged_value_));
-
-    if (!UsingLadders()) {
-      RepositionLadder();
-    }
-
-    emit ValueChanged(clamped_temp_dragged_value_);
-    break;
-  }
-  
-  case kRational:
-  {
-    dragged_diff_ += value * drag_multiplier_ * multiplier;
-    double drag_val = AdjustDragDistanceInternal(value_.value<rational>().toDouble(), dragged_diff_);
-    rational d_v;
-    d_v = rational::fromDouble(drag_val);
-    temp_dragged_value_.setValue(d_v);
-
-    clamped_temp_dragged_value_ = ClampValue(temp_dragged_value_);
-
-    UpdateLabel(temp_dragged_value_);
-
-    drag_ladder_->SetValue(ValueToString(clamped_temp_dragged_value_));
-    
-    if (!Config::Current()[QStringLiteral("UseSliderLadders")].toBool()) {
-      RepositionLadder();
-    }
-
-    emit ValueChanged(clamped_temp_dragged_value_);
-    break;
-  }
-  }
-}
-
-void SliderBase::LadderReleased()
-{
-  drag_ladder_->deleteLater();
-  drag_ladder_ = nullptr;
-  dragged_diff_ = 0;
-
-  if (dragged_) {
-    // This was a drag
-    switch (mode_) {
-    case kString:
-      // No-op
-      break;
-    case kInteger:
-      SetValue(clamped_temp_dragged_value_.toInt());
-      break;
-    case kFloat:
-      SetValue(clamped_temp_dragged_value_.toDouble());
-      break;
-    case kRational:
-      SetValue(temp_dragged_value_);
-    }
-
-    emit ValueChanged(value_);
-
-    dragged_ = false;
-  } else {
-    ShowEditor();
-  }
-}
-
-void SliderBase::LineEditConfirmed()
-{
-  bool is_valid = true;
-  QVariant test_val = StringToValue(editor_->text(), &is_valid);
-
-  // Ensure editor doesn't signal that the focus is lost
-  editor_->blockSignals(true);
-  label_->blockSignals(true);
-
-  if (is_valid) {
-    SetValue(test_val);
-
-    setCurrentWidget(label_);
-
-    emit ValueChanged(value_);
-  } else if (require_valid_input_ && !IsTristate()) {
-    QMessageBox::critical(this,
-                          tr("Invalid Value"),
-                          tr("The entered value is not valid for this field."),
-                          QMessageBox::Ok);
-
-    // Refocus editor
-    editor_->setFocus();
-  }
-
-  editor_->blockSignals(false);
-  label_->blockSignals(false);
-}
-
-void SliderBase::LineEditCancelled()
-{
-  // Ensure editor doesn't signal that the focus is lost
-  editor_->blockSignals(true);
-  label_->blockSignals(true);
-
-  // Set widget back to label
-  setCurrentWidget(label_);
-
-  editor_->blockSignals(false);
-  label_->blockSignals(false);
-}
-
-void SliderBase::ResetValue()
-{
-  if (!default_value_.isNull()) {
-    SetValue(default_value_);
-    emit ValueChanged(value_);
-  }
-}
-
-void SliderBase::RepositionLadder()
-{
-  if (drag_ladder_) {
-    if (UsingLadders()) {
-      drag_ladder_->move(QCursor::pos() - QPoint(drag_ladder_->width()/2, drag_ladder_->height()/2));
-    } else {
-      QPoint label_global_pos = label_->mapToGlobal(label_->pos());
-      int text_width = QtUtils::QFontMetricsWidth(label_->fontMetrics(), label_->text());
-
-      int ladder_x = label_global_pos.x() + text_width / 2 - drag_ladder_->width() / 2;
-      int ladder_y = label_global_pos.y() + label_->height() / 2 - drag_ladder_->height() / 2;
-
-      drag_ladder_->move(ladder_x, ladder_y);
-    }
-
-    drag_ladder_->StartListeningToMouseInput();
-  }
-}
-
-}

app/widget/slider/stringslider.cpp

@@ -22,33 +22,46 @@
 
 namespace olive {
 
+#define super SliderBase
+
 StringSlider::StringSlider(QWidget* parent) :
-  SliderBase(kString, parent)
+  super(parent)
 {
   SetValue(QString());
 
-  connect(this, SIGNAL(ValueChanged(QVariant)), this, SLOT(ConvertValue(QVariant)));
+  connect(label(), &SliderLabel::LabelReleased, this, &SliderBase::ShowEditor);
 }
 
-QString StringSlider::GetValue()
+QString StringSlider::GetValue() const
 {
-  return Value().toString();
+  return GetValueInternal().toString();
 }
 
 void StringSlider::SetValue(const QString &v)
 {
-  SliderBase::SetValue(v);
+  SetValueInternal(v);
 }
 
-QString StringSlider::ValueToString(const QVariant &v)
+void StringSlider::SetDefaultValue(const QString &v)
+{
+  super::SetDefaultValue(v);
+}
+
+QString StringSlider::ValueToString(const QVariant &v) const
 {
   QString vstr = v.toString();
   return (vstr.isEmpty()) ? tr("(none)") : vstr;
 }
 
-void StringSlider::ConvertValue(QVariant v)
+QVariant StringSlider::StringToValue(const QString &s, bool *ok) const
 {
-  emit ValueChanged(v.toString());
+  *ok = true;
+  return s;
+}
+
+void StringSlider::ValueSignalEvent(const QVariant &value)
+{
+  emit ValueChanged(value.toString());
 }
 
 }

app/widget/slider/stringslider.h

@@ -21,7 +21,7 @@
 #ifndef STRINGSLIDER_H
 #define STRINGSLIDER_H
 
-#include "sliderbase.h"
+#include "base/sliderbase.h"
 
 namespace olive {
 
@@ -33,18 +33,22 @@ public:
 
   void SetDragMultiplier(const double& d) = delete;
 
-  QString GetValue();
+  QString GetValue() const;
 
   void SetValue(const QString& v);
 
-protected:
+  void SetDefaultValue(const QString& v);
-  virtual QString ValueToString(const QVariant& value) override;
 
 signals:
-  void ValueChanged(QString);
+  void ValueChanged(const QString& str);
+
+protected:
+  virtual QString ValueToString(const QVariant& value) const override;
+
+  virtual QVariant StringToValue(const QString &s, bool *ok) const override;
+
+  virtual void ValueSignalEvent(const QVariant &value) override;
 
-private slots:
-  void ConvertValue(QVariant v);
 };
 
 }

app/widget/slider/timeslider.cpp

@@ -25,13 +25,14 @@
 
 namespace olive {
 
+#define super IntegerSlider
+
 TimeSlider::TimeSlider(QWidget *parent) :
-  IntegerSlider(parent)
+  super(parent)
 {
   SetMinimum(0);
-  SetValue(0);
 
-  connect(Core::instance(), &Core::TimecodeDisplayChanged, this, &TimeSlider::TimecodeDisplayChanged);
+  connect(Core::instance(), &Core::TimecodeDisplayChanged, this, &TimeSlider::UpdateLabel);
 }
 
 void TimeSlider::SetTimebase(const rational &timebase)
@@ -39,14 +40,14 @@ void TimeSlider::SetTimebase(const rational &timebase)
   timebase_ = timebase;
 
   // Refresh label since we have a new timebase to generate a timecode with
-  UpdateLabel(Value());
+  UpdateLabel();
 }
 
-QString TimeSlider::ValueToString(const QVariant &v)
+QString TimeSlider::ValueToString(const QVariant &v) const
 {
   if (timebase_.isNull()) {
     // We can't generate a timecode without a timebase, so we just return the number
-    return IntegerSlider::ValueToString(v);
+    return super::ValueToString(v);
   }
 
   return Timecode::timestamp_to_timecode(v.toLongLong() + GetOffset().toLongLong(),
@@ -54,14 +55,9 @@ QString TimeSlider::ValueToString(const QVariant &v)
                                          Core::instance()->GetTimecodeDisplay());
 }
 
-QVariant TimeSlider::StringToValue(const QString &s, bool *ok)
+QVariant TimeSlider::StringToValue(const QString &s, bool *ok) const
 {
   return QVariant::fromValue(Timecode::timecode_to_timestamp(s, timebase_, Core::instance()->GetTimecodeDisplay(), ok) - GetOffset().toLongLong());
 }
 
-void TimeSlider::TimecodeDisplayChanged()
-{
-  UpdateLabel(Value());
-}
-
 }

app/widget/slider/timeslider.h

@@ -35,16 +35,13 @@ public:
   void SetTimebase(const rational& timebase);
 
 protected:
-  virtual QString ValueToString(const QVariant& v) override;
+  virtual QString ValueToString(const QVariant& v) const override;
 
-  virtual QVariant StringToValue(const QString& s, bool* ok) override;
+  virtual QVariant StringToValue(const QString& s, bool* ok) const override;
 
 private:
   rational timebase_;
 
-private slots:
-  void TimecodeDisplayChanged();
-
 };
 
 }

app/widget/timeruler/timeruler.cpp

@@ -306,8 +306,8 @@ void TimeRuler::ShowContextMenu()
 {
   Menu m(this);
 
-  MenuShared::instance()->AddItemsForTimeRulerMenu(&m, timebase());
+  MenuShared::instance()->AddItemsForTimeRulerMenu(&m);
-  MenuShared::instance()->AboutToShowTimeRulerActions();
+  MenuShared::instance()->AboutToShowTimeRulerActions(timebase());
 
   m.exec(QCursor::pos());
 }

app/widget/videoparamedit/videoparamedit.cpp

@@ -97,11 +97,13 @@ VideoParamEdit::VideoParamEdit(QWidget* parent) :
   connect(frame_rate_combobox_, static_cast<void (FrameRateComboBox::*)(int)>(&FrameRateComboBox::currentIndexChanged), this, &VideoParamEdit::Changed);
   layout->addWidget(frame_rate_combobox_, row, 1);
 
-  // FIXME: Replace with rational slider
+  frame_rate_slider_ = new RationalSlider();
-  frame_rate_slider_ = new FloatSlider();
   frame_rate_slider_->SetMinimum(0);
-  frame_rate_slider_->SetDecimalPlaces(2);
+  frame_rate_slider_->SetDecimalPlaces(3);
-  connect(frame_rate_slider_, &FloatSlider::ValueChanged, this, &VideoParamEdit::Changed);
+  frame_rate_slider_->SetAutoTrimDecimalPlaces(true);
+  frame_rate_slider_->SetTimebase(rational(1, 1000)); // Drag interval
+  frame_rate_slider_->DisableDisplayType(RationalSlider::kTime);
+  connect(frame_rate_slider_, &RationalSlider::ValueChanged, this, &VideoParamEdit::Changed);
   layout->addWidget(frame_rate_slider_, row, 1);
 
   row++;
@@ -277,7 +279,7 @@ VideoParams VideoParamEdit::GetVideoParams() const
     rational using_frame_rate;
 
     if (mask_ & kFrameRateIsArbitrary) {
-      using_frame_rate = rational::fromDouble(frame_rate_slider_->GetValue());
+      using_frame_rate = frame_rate_slider_->GetValue();
     } else {
       using_frame_rate = frame_rate_combobox_->GetFrameRate();
     }
@@ -316,7 +318,7 @@ void VideoParamEdit::SetVideoParams(const VideoParams &p)
   depth_slider_->SetValue(p.depth());
 
   frame_rate_combobox_->SetFrameRate(p.frame_rate());
-  frame_rate_slider_->SetValue(p.frame_rate().toDouble());
+  frame_rate_slider_->SetValue(p.frame_rate());
   timebase_temp_ = p.time_base();
 
   pixel_aspect_combobox_->SetPixelAspectRatio(p.pixel_aspect_ratio());

app/widget/videoparamedit/videoparamedit.h

@@ -27,8 +27,8 @@
 
 #include "node/color/colormanager/colormanager.h"
 #include "render/videoparams.h"
-#include "widget/slider/floatslider.h"
 #include "widget/slider/integerslider.h"
+#include "widget/slider/rationalslider.h"
 #include "widget/standardcombos/frameratecombobox.h"
 #include "widget/standardcombos/interlacedcombobox.h"
 #include "widget/standardcombos/pixelaspectratiocombobox.h"
@@ -145,7 +145,7 @@ private:
   IntegerSlider* depth_slider_;
   QLabel* frame_rate_lbl_;
   FrameRateComboBox* frame_rate_combobox_;
-  FloatSlider* frame_rate_slider_;
+  RationalSlider* frame_rate_slider_;
   QLabel* pixel_aspect_lbl_;
   PixelAspectRatioComboBox* pixel_aspect_combobox_;
   QLabel* interlaced_lbl_;

app/window/mainwindow/mainmenu.cpp

@@ -308,12 +308,12 @@ void MainMenu::ViewMenuAboutToShow()
   if (p) {
     if (p->timebase().denominator() != 0) {
       view_menu_->addSeparator();
-      MenuShared::instance()->AddItemsForTimeRulerMenu(view_menu_, p->timebase());
+      MenuShared::instance()->AddItemsForTimeRulerMenu(view_menu_);
     }
   }
 
   // Ensure checked timecode display mode is correct
-  MenuShared::instance()->AboutToShowTimeRulerActions();
+  MenuShared::instance()->AboutToShowTimeRulerActions(p->timebase());
 }
 
 void MainMenu::ToolsMenuAboutToShow()