added slider widget

app/node/blend/alphaover/alphaover.cpp

@@ -25,8 +25,7 @@
 #include "render/rendertexture.h"
 #include "render/gl/shadergenerators.h"
 
-AlphaOverBlend::AlphaOverBlend() :
+AlphaOverBlend::AlphaOverBlend()
-  shader_(nullptr)
 {
 
 }
@@ -48,7 +47,6 @@ QString AlphaOverBlend::Description()
 
 void AlphaOverBlend::Release()
 {
-  shader_ = nullptr;
 }
 
 QVariant AlphaOverBlend::Value(NodeOutput *param, const rational &time)
@@ -76,14 +74,8 @@ QVariant AlphaOverBlend::Value(NodeOutput *param, const rational &time)
     // Bind blend
     blend->Bind();
 
-    // Get default pipeline shader
-    // FIXME: Come up with a good way to share pipeline shaders since a lot of nodes will just use the default
-    if (shader_ == nullptr) {
-      shader_ = olive::ShaderGenerator::DefaultPipeline();
-    }
-
     // Draw blend on base
-    olive::gl::Blit(shader_);
+    olive::gl::Blit(renderer->default_pipeline());
 
     // Release all
     blend->Release();

app/node/blend/alphaover/alphaover.h

@@ -39,7 +39,6 @@ protected:
   virtual QVariant Value(NodeOutput* param, const rational& time) override;
 
 private:
-  ShaderPtr shader_;
 };
 
 #endif // ALPHAOVER_H

app/node/color/opacity/opacity.cpp

@@ -28,6 +28,7 @@ OpacityNode::OpacityNode()
 {
   opacity_input_ = new NodeInput("opacity_in");
   opacity_input_->add_data_input(NodeParam::kFloat);
+  opacity_input_->set_value(100);
   AddParameter(opacity_input_);
 
   texture_input_ = new NodeInput("tex_in");

app/render/colorservice.cpp

@@ -88,8 +88,7 @@ void ColorService::AssociateAlphaInternal(ColorService::AlphaAction action, T *d
   for (int i=0;i<pix_count;i+=kRGBAChannels) {
     T alpha = data[i+kRGBChannels];
 
-    // FIXME: Is qIsNull the correct approach here or should it literally be an != 0?
+    if (action == kAssociate || alpha > 0) {
-    if (action == kAssociate || !qIsNull(alpha)) {
       for (int j=0;j<kRGBChannels;j++) {
         if (action == kDisassociate) {
           data[i+j] /= alpha;

app/widget/CMakeLists.txt

@@ -23,6 +23,7 @@ add_subdirectory(panel)
 add_subdirectory(playbackcontrols)
 add_subdirectory(projectexplorer)
 add_subdirectory(projecttoolbar)
+add_subdirectory(slider)
 add_subdirectory(taskview)
 add_subdirectory(timelineview)
 add_subdirectory(timeruler)

app/widget/nodeparamview/nodeparamviewwidgetbridge.cpp

@@ -6,6 +6,8 @@
 
 #include "node/node.h"
 #include "widget/footagecombobox/footagecombobox.h"
+#include "widget/slider/floatslider.h"
+#include "widget/slider/integerslider.h"
 
 // FIXME: Test code only
 #include "panel/panelmanager.h"
@@ -52,11 +54,19 @@ void NodeParamViewWidgetBridge::CreateWidgets()
   case NodeParam::kTrack:
     break;
   case NodeParam::kInt:
-    // FIXME: LabelSlider in INTEGER mode
+  {
+    IntegerSlider* slider = new IntegerSlider();
+    widgets_.append(slider);
+    connect(slider, SIGNAL(ValueChanged(int)), this, SLOT(WidgetCallback()));
     break;
+  }
   case NodeParam::kFloat:
-    // FIXME: LabelSlider in FLOAT mode
+  {
+    FloatSlider* slider = new FloatSlider();
+    widgets_.append(slider);
+    connect(slider, SIGNAL(ValueChanged(double)), this, SLOT(WidgetCallback()));
     break;
+  }
   case NodeParam::kFile:
     // FIXME: File selector
     break;
@@ -67,6 +77,7 @@ void NodeParamViewWidgetBridge::CreateWidgets()
   {
     QLineEdit* line_edit = new QLineEdit();
     widgets_.append(line_edit);
+    connect(line_edit, SIGNAL(textEdited(const QString &text)), this, SLOT(WidgetCallback()));
     break;
   }
   case NodeParam::kBoolean:
@@ -116,11 +127,19 @@ void NodeParamViewWidgetBridge::WidgetCallback()
     case NodeParam::kTrack:
       break;
     case NodeParam::kInt:
-      // FIXME: LabelSlider in INTEGER mode
+    {
+      // Widget is a IntegerSlider
+      IntegerSlider* int_slider = static_cast<IntegerSlider*>(sender());
+      input->set_value(int_slider->GetValue());
       break;
+    }
     case NodeParam::kFloat:
-      // FIXME: LabelSlider in FLOAT mode
+    {
+      // Widget is a FloatSlider
+      FloatSlider* float_slider = static_cast<FloatSlider*>(sender());
+      input->set_value(float_slider->GetValue());
       break;
+    }
     case NodeParam::kFile:
       // FIXME: File selector
       break;
@@ -130,19 +149,22 @@ void NodeParamViewWidgetBridge::WidgetCallback()
     case NodeParam::kString:
     {
       // Sender is a QLineEdit
-      //QLineEdit* line_edit = static_cast<QLineEdit*>(sender());
+      QLineEdit* line_edit = static_cast<QLineEdit*>(sender());
+      input->set_value(line_edit->text());
       break;
     }
     case NodeParam::kBoolean:
     {
       // Widget is a QCheckBox
-      //QCheckBox* check_box = static_cast<QCheckBox*>(sender());
+      QCheckBox* check_box = static_cast<QCheckBox*>(sender());
+      input->set_value(check_box->isChecked());
       break;
     }
     case NodeParam::kFont:
     {
       // Widget is a QFontComboBox
-      //QFontComboBox* font_combobox = static_cast<QFontComboBox*>(sender());
+      QFontComboBox* font_combobox = static_cast<QFontComboBox*>(sender());
+      input->set_value(font_combobox->currentFont());
       break;
     }
     case NodeParam::kFootage:

app/widget/slider/CMakeLists.txt

@@ -0,0 +1,32 @@
+# Olive - Non-Linear Video Editor
+# Copyright (C) 2019 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/floatslider.h
+  widget/slider/floatslider.cpp
+  widget/slider/integerslider.h
+  widget/slider/integerslider.cpp
+  widget/slider/sliderbase.h
+  widget/slider/sliderbase.cpp
+  widget/slider/sliderlabel.h
+  widget/slider/sliderlabel.cpp
+  widget/slider/sliderlineedit.h
+  widget/slider/sliderlineedit.cpp
+  widget/slider/stringslider.h
+  widget/slider/stringslider.cpp
+  PARENT_SCOPE
+)

app/widget/slider/floatslider.cpp

@@ -0,0 +1,49 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 "floatslider.h"
+
+FloatSlider::FloatSlider(QWidget *parent) :
+  SliderBase(kFloat, parent)
+{
+  connect(this, SIGNAL(ValueChanged(QVariant)), this, SLOT(ConvertValue(QVariant)));
+}
+
+double FloatSlider::GetValue()
+{
+  return Value().toDouble();
+}
+
+void FloatSlider::SetValue(const double &d)
+{
+  SliderBase::SetValue(d);
+}
+
+void FloatSlider::SetDecimalPlaces(int i)
+{
+  decimal_places_ = i;
+
+  UpdateLabel(Value());
+}
+
+void FloatSlider::ConvertValue(QVariant v)
+{
+  emit ValueChanged(v.toDouble());
+}

app/widget/slider/floatslider.h

@@ -0,0 +1,45 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 FLOATSLIDER_H
+#define FLOATSLIDER_H
+
+#include "sliderbase.h"
+
+class FloatSlider : public SliderBase
+{
+  Q_OBJECT
+public:
+  FloatSlider(QWidget* parent = nullptr);
+
+  double GetValue();
+
+  void SetValue(const double& d);
+
+  void SetDecimalPlaces(int i);
+
+signals:
+  void ValueChanged(double);
+
+private slots:
+  void ConvertValue(QVariant v);
+};
+
+#endif // FLOATSLIDER_H

app/widget/slider/integerslider.cpp

@@ -0,0 +1,42 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 "integerslider.h"
+
+IntegerSlider::IntegerSlider(QWidget* parent) :
+  SliderBase(kInteger, parent)
+{
+  connect(this, SIGNAL(ValueChanged(QVariant)), this, SLOT(ConvertValue(QVariant)));
+}
+
+int IntegerSlider::GetValue()
+{
+  return Value().toInt();
+}
+
+void IntegerSlider::SetValue(const int &v)
+{
+  SliderBase::SetValue(v);
+}
+
+void IntegerSlider::ConvertValue(QVariant v)
+{
+  emit ValueChanged(v.toInt());
+}

app/widget/slider/integerslider.h

@@ -0,0 +1,43 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 INTEGERSLIDER_H
+#define INTEGERSLIDER_H
+
+#include "sliderbase.h"
+
+class IntegerSlider : public SliderBase
+{
+  Q_OBJECT
+public:
+  IntegerSlider(QWidget* parent = nullptr);
+
+  int GetValue();
+
+  void SetValue(const int& v);
+
+signals:
+  void ValueChanged(int);
+
+private slots:
+  void ConvertValue(QVariant v);
+};
+
+#endif // INTEGERSLIDER_H

app/widget/slider/sliderbase.cpp

@@ -0,0 +1,233 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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>
+
+SliderBase::SliderBase(Mode mode, QWidget *parent) :
+  QStackedWidget(parent),
+  decimal_places_(1),
+  drag_multiplier_(1.0),
+  mode_(mode),
+  dragged_(false)
+{
+  label_ = new SliderLabel(this);
+  addWidget(label_);
+
+  editor_ = new SliderLineEdit(this);
+  addWidget(editor_);
+
+  connect(label_, SIGNAL(drag_start()), this, SLOT(LabelPressed()));
+  connect(label_, SIGNAL(dragged(int)), this, SLOT(LabelDragged(int)));
+  connect(label_, SIGNAL(drag_stop()), this, SLOT(LabelClicked()));
+  connect(editor_, SIGNAL(Confirmed()), this, SLOT(LineEditConfirmed()));
+  connect(editor_, SIGNAL(Cancelled()), this, SLOT(LineEditCancelled()));
+
+  // Set valid cursor based on mode
+  switch (mode_) {
+  case kString:
+    setCursor(Qt::PointingHandCursor);
+    value_ = "";
+    break;
+  case kInteger:
+  case kFloat:
+    setCursor(Qt::SizeHorCursor);
+    value_ = 0;
+    break;
+  }
+
+  UpdateLabel(value_);
+}
+
+void SliderBase::SetDragMultiplier(const double &d)
+{
+  drag_multiplier_ = d;
+}
+
+const QVariant &SliderBase::Value()
+{
+  return value_;
+}
+
+void SliderBase::SetValue(const QVariant &v)
+{
+  value_ = v;
+
+  UpdateLabel(value_);
+}
+
+void SliderBase::changeEvent(QEvent *e)
+{
+  if (e->type() == QEvent::LanguageChange) {
+    UpdateLabel(value_);
+  }
+  QStackedWidget::changeEvent(e);
+}
+
+void SliderBase::UpdateLabel(const QVariant &v)
+{
+  switch (mode_) {
+  case kString:
+  {
+    QString vstr = v.toString();
+
+    if (vstr.isEmpty()) {
+      label_->setText(tr("(none)"));
+    } else {
+      label_->setText(vstr);
+    }
+    break;
+  }
+  case kInteger:
+    label_->setText(v.toString());
+    break;
+  case kFloat:
+    // For floats, we show a limited number of decimal places
+    label_->setText(QString::number(v.toDouble(), 'f', decimal_places_));
+    break;
+  }
+}
+
+void SliderBase::LabelPressed()
+{
+  dragged_ = false;
+
+  if (mode_ != kString) {
+    temp_drag_value_ = value_.toDouble();
+  }
+}
+
+void SliderBase::LabelClicked()
+{
+  if (dragged_) {
+    // This was a drag
+    switch (mode_) {
+    case kString:
+      // No-op
+      break;
+    case kInteger:
+      value_ = qRound(temp_drag_value_);
+      break;
+    case kFloat:
+      value_ = temp_drag_value_;
+      break;
+    }
+
+    UpdateLabel(value_);
+  } else {
+    // This was a simple click
+
+    // Load label's text into editor
+    editor_->setText(label_->text());
+
+    // Show editor
+    setCurrentWidget(editor_);
+
+    // Select all text in the editor
+    editor_->setFocus();
+    editor_->selectAll();
+  }
+}
+
+void SliderBase::LabelDragged(int i)
+{
+  switch (mode_) {
+  case kString:
+    // No dragging supported for strings
+    break;
+  case kInteger:
+  case kFloat:
+  {
+    double real_drag = static_cast<double>(i) * drag_multiplier_;
+
+    temp_drag_value_ += real_drag;
+
+    if (mode_ == kInteger) {
+      UpdateLabel(qRound(temp_drag_value_));
+    } else {
+      UpdateLabel(temp_drag_value_);
+    }
+    break;
+  }
+  }
+
+  dragged_ = true;
+}
+
+void SliderBase::LineEditConfirmed()
+{
+  bool is_valid = true;
+  QVariant test_val;
+
+  // Check whether the entered value is valid for this mode
+  switch (mode_) {
+  case kString:
+    // Anything goes for a string
+    test_val = editor_->text();
+    break;
+  case kInteger:
+  case kFloat:
+    // Allow both floats and integers for either modes
+    test_val = editor_->text().toDouble(&is_valid);
+
+    if (is_valid && mode_ == kInteger) {
+      // But for an integer, we round it
+      test_val = qRound(test_val.toDouble());
+    }
+    break;
+  }
+
+  if (is_valid) {
+    value_ = test_val;
+
+    UpdateLabel(value_);
+
+    emit ValueChanged(value_);
+
+    setCurrentWidget(label_);
+  } else {
+    // Ensure the editor focusing out when the messagebox appears does not cause another messagebox
+    editor_->blockSignals(true);
+
+    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);
+  }
+}
+
+void SliderBase::LineEditCancelled()
+{
+  // Ensure editor doesn't signal that the focus is lost
+  editor_->blockSignals(true);
+
+  // Set widget back to label
+  setCurrentWidget(label_);
+
+  editor_->blockSignals(false);
+}

app/widget/slider/sliderbase.h

@@ -0,0 +1,84 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 SLIDERBASE_H
+#define SLIDERBASE_H
+
+#include <QStackedWidget>
+
+#include "sliderlabel.h"
+#include "sliderlineedit.h"
+
+class SliderBase : public QStackedWidget
+{
+  Q_OBJECT
+public:
+  enum Mode {
+    kString,
+    kInteger,
+    kFloat
+  };
+
+  SliderBase(Mode mode, QWidget* parent = nullptr);
+
+  void SetDragMultiplier(const double& d);
+
+signals:
+  void ValueChanged(QVariant v);
+
+protected:
+  const QVariant& Value();
+
+  void SetValue(const QVariant& v);
+
+  void UpdateLabel(const QVariant& v);
+
+  virtual void changeEvent(QEvent* e) override;
+
+  int decimal_places_;
+
+  double drag_multiplier_;
+
+private:
+  SliderLabel* label_;
+
+  SliderLineEdit* editor_;
+
+  QVariant value_;
+
+  Mode mode_;
+
+  bool dragged_;
+
+  double temp_drag_value_;
+
+private slots:
+  void LabelPressed();
+
+  void LabelClicked();
+
+  void LabelDragged(int i);
+
+  void LineEditConfirmed();
+
+  void LineEditCancelled();
+};
+
+#endif // SLIDERBASE_H

app/widget/slider/sliderlabel.cpp

@@ -0,0 +1,72 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 "sliderlabel.h"
+
+#include <QApplication>
+#include <QMouseEvent>
+
+SliderLabel::SliderLabel(QWidget *parent) :
+  QLabel(parent)
+{
+  // Use highlight color as font color
+  setForegroundRole(QPalette::Highlight);
+
+  // Set underlined
+  QFont f = font();
+  f.setUnderline(true);
+  setFont(f);
+}
+
+void SliderLabel::mousePressEvent(QMouseEvent *ev)
+{
+  QLabel::mousePressEvent(ev);
+
+  drag_start_ = QCursor::pos();
+
+  static_cast<QGuiApplication*>(QApplication::instance())->setOverrideCursor(Qt::BlankCursor);
+
+  emit drag_start();
+}
+
+void SliderLabel::mouseMoveEvent(QMouseEvent *ev)
+{
+  QLabel::mouseMoveEvent(ev);
+
+  QPoint current_pos = QCursor::pos();
+
+  int x_mvmt = current_pos.x() - drag_start_.x();
+  int y_mvmt = drag_start_.y() - current_pos.y();
+
+  emit dragged(x_mvmt + y_mvmt);
+
+  // Keep cursor in the same position
+  QCursor::setPos(drag_start_);
+}
+
+void SliderLabel::mouseReleaseEvent(QMouseEvent *ev)
+{
+  QWidget::mouseReleaseEvent(ev);
+
+  // Emit a clicked signal
+  emit drag_stop();
+
+  static_cast<QGuiApplication*>(QApplication::instance())->restoreOverrideCursor();
+}

app/widget/slider/sliderlabel.h

@@ -0,0 +1,51 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 SLIDERLABEL_H
+#define SLIDERLABEL_H
+
+#include <QLabel>
+
+class SliderLabel : public QLabel
+{
+  Q_OBJECT
+public:
+  SliderLabel(QWidget* parent);
+
+protected:
+  void mousePressEvent(QMouseEvent *ev) override;
+
+  void mouseMoveEvent(QMouseEvent *ev) override;
+
+  void mouseReleaseEvent(QMouseEvent *ev) override;
+
+signals:
+  void dragged(int x);
+
+  void drag_start();
+
+  void drag_stop();
+
+private:
+  QPoint drag_start_;
+
+};
+
+#endif // SLIDERLABEL_H

app/widget/slider/sliderlineedit.cpp

@@ -0,0 +1,51 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 "sliderlineedit.h"
+
+#include <QKeyEvent>
+
+SliderLineEdit::SliderLineEdit(QWidget *parent) :
+  QLineEdit(parent)
+{
+
+}
+
+void SliderLineEdit::keyPressEvent(QKeyEvent *e)
+{
+  switch (e->key()) {
+  case Qt::Key_Return:
+  case Qt::Key_Enter:
+    emit Confirmed();
+    break;
+  case Qt::Key_Escape:
+    emit Cancelled();
+    break;
+  default:
+    QLineEdit::keyPressEvent(e);
+  }
+}
+
+void SliderLineEdit::focusOutEvent(QFocusEvent *e)
+{
+  QLineEdit::focusOutEvent(e);
+
+  emit Confirmed();
+}

app/widget/slider/sliderlineedit.h

@@ -0,0 +1,45 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 SLIDERLINEEDIT_H
+#define SLIDERLINEEDIT_H
+
+#include <QLineEdit>
+
+class SliderLineEdit : public QLineEdit
+{
+  Q_OBJECT
+public:
+  SliderLineEdit(QWidget* parent);
+
+signals:
+  void Confirmed();
+
+  void Cancelled();
+
+protected:
+  void keyPressEvent(QKeyEvent *) override;
+
+  void focusOutEvent(QFocusEvent *) override;
+
+
+};
+
+#endif // SLIDERLINEEDIT_H

app/widget/slider/stringslider.cpp

@@ -0,0 +1,42 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 "stringslider.h"
+
+StringSlider::StringSlider(QWidget* parent) :
+  SliderBase(kString, parent)
+{
+  connect(this, SIGNAL(ValueChanged(QVariant)), this, SLOT(ConvertValue(QVariant)));
+}
+
+QString StringSlider::GetValue()
+{
+  return Value().toString();
+}
+
+void StringSlider::SetValue(const QString &v)
+{
+  SliderBase::SetValue(v);
+}
+
+void StringSlider::ConvertValue(QVariant v)
+{
+  emit ValueChanged(v.toString());
+}

app/widget/slider/stringslider.h

@@ -0,0 +1,45 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2019 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 STRINGSLIDER_H
+#define STRINGSLIDER_H
+
+#include "sliderbase.h"
+
+class StringSlider : public SliderBase
+{
+  Q_OBJECT
+public:
+  StringSlider(QWidget* parent = nullptr);
+
+  void SetDragMultiplier(const double& d) = delete;
+
+  QString GetValue();
+
+  void SetValue(const QString& v);
+
+signals:
+  void ValueChanged(QString);
+
+private slots:
+  void ConvertValue(QVariant v);
+};
+
+#endif // STRINGSLIDER_H