footageviewer: auto switch waveform mode when clicking video/audio buttons

app/widget/playbackcontrols/dragbutton.cpp

@@ -1,7 +1,7 @@
 /***
 
   Olive - Non-Linear Video Editor
-  Copyright (C) 2022 Olive Team
+  Copyright (C) 2023 Olive Studios LLC
 
   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
@@ -20,18 +20,37 @@
 
 #include "dragbutton.h"
 
+#include <QMouseEvent>
+
 namespace olive {
 
 DragButton::DragButton(QWidget *parent) :
   QPushButton(parent)
 {
   setCursor(Qt::OpenHandCursor);
+  dragging_ = false;
 }
 
-void DragButton::mousePressEvent(QMouseEvent *event) {
+void DragButton::mousePressEvent(QMouseEvent *event)
+{
   QPushButton::mousePressEvent(event);
+}
 
-  emit MousePressed();
+void DragButton::mouseMoveEvent(QMouseEvent *event)
+{
+  QPushButton::mouseMoveEvent(event);
+
+  if (event->buttons() && !dragging_) {
+    emit DragStarted();
+    dragging_ = true;
+  }
+}
+
+void DragButton::mouseReleaseEvent(QMouseEvent *event)
+{
+  QPushButton::mouseReleaseEvent(event);
+
+  dragging_ = false;
 }
 
 }

app/widget/playbackcontrols/dragbutton.h

@@ -1,7 +1,7 @@
 /***
 
   Olive - Non-Linear Video Editor
-  Copyright (C) 2022 Olive Team
+  Copyright (C) 2023 Olive Studios LLC
 
   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
@@ -34,11 +34,18 @@ public:
   DragButton(QWidget* parent = nullptr);
 
 signals:
-  void MousePressed();
+  void DragStarted();
 
 protected:
   virtual void mousePressEvent(QMouseEvent* event) override;
 
+  virtual void mouseMoveEvent(QMouseEvent* event) override;
+
+  virtual void mouseReleaseEvent(QMouseEvent* event) override;
+
+private:
+  bool dragging_;
+
 };
 
 }

app/widget/playbackcontrols/playbackcontrols.cpp

@@ -127,11 +127,11 @@ PlaybackControls::PlaybackControls(QWidget *parent) :
   av_btn_layout->setContentsMargins(0, 0, 0, 0);
   video_drag_btn_ = new DragButton();
   connect(video_drag_btn_, &QPushButton::clicked, this, &PlaybackControls::VideoClicked);
-  connect(video_drag_btn_, &DragButton::MousePressed, this, &PlaybackControls::VideoPressed);
+  connect(video_drag_btn_, &DragButton::DragStarted, this, &PlaybackControls::VideoDragged);
   av_btn_layout->addWidget(video_drag_btn_);
   audio_drag_btn_ = new DragButton();
   connect(audio_drag_btn_, &QPushButton::clicked, this, &PlaybackControls::AudioClicked);
-  connect(audio_drag_btn_, &DragButton::MousePressed, this, &PlaybackControls::AudioPressed);
+  connect(audio_drag_btn_, &DragButton::DragStarted, this, &PlaybackControls::AudioDragged);
   av_btn_layout->addWidget(audio_drag_btn_);
   lower_control_layout->addWidget(av_btn_widget);
 

app/widget/playbackcontrols/playbackcontrols.h

@@ -112,9 +112,9 @@ signals:
 
   void VideoClicked();
 
-  void AudioPressed();
+  void AudioDragged();
 
-  void VideoPressed();
+  void VideoDragged();
 
   void TimeChanged(const rational& t);
 

app/widget/viewer/footageviewer.cpp

@@ -36,8 +36,10 @@ FootageViewerWidget::FootageViewerWidget(QWidget *parent) :
   connect(display_widget(), &ViewerDisplayWidget::DragStarted, this, &FootageViewerWidget::StartFootageDrag);
 
   controls_->SetAudioVideoDragButtonsVisible(true);
-  connect(controls_, &PlaybackControls::VideoPressed, this, &FootageViewerWidget::StartVideoDrag);
-  connect(controls_, &PlaybackControls::AudioPressed, this, &FootageViewerWidget::StartAudioDrag);
+  connect(controls_, &PlaybackControls::VideoClicked, this, &FootageViewerWidget::VideoButtonClicked);
+  connect(controls_, &PlaybackControls::AudioClicked, this, &FootageViewerWidget::AudioButtonClicked);
+  connect(controls_, &PlaybackControls::VideoDragged, this, &FootageViewerWidget::StartVideoDrag);
+  connect(controls_, &PlaybackControls::AudioDragged, this, &FootageViewerWidget::StartAudioDrag);
 
   override_workarea_ = new TimelineWorkArea(this);
 }
@@ -108,4 +110,14 @@ void FootageViewerWidget::StartAudioDrag()
   StartFootageDragInternal(false, true);
 }
 
+void FootageViewerWidget::VideoButtonClicked()
+{
+  this->SetWaveformMode(kWFAutomatic);
+}
+
+void FootageViewerWidget::AudioButtonClicked()
+{
+  this->SetWaveformMode(kWFWaveformOnly);
+}
+
 }

app/widget/viewer/footageviewer.h

@@ -47,6 +47,10 @@ private slots:
 
   void StartAudioDrag();
 
+  void VideoButtonClicked();
+
+  void AudioButtonClicked();
+
 };
 
 }

app/widget/viewer/viewer.h

@@ -218,6 +218,8 @@ protected:
 
   RenderTicketPtr GetSingleFrame(const rational &t, bool dry = false);
 
+  void SetWaveformMode(WaveformMode wf);
+
 private:
   int64_t GetTimestamp() const
   {
@@ -270,8 +272,6 @@ private:
 
   void CloseAudioProcessor();
 
-  void SetWaveformMode(WaveformMode wf);
-
   void DetectMulticamNode(const rational &time);
 
   bool IsVideoVisible() const;