timebasedwidget: re-implemented toggle show all function

app/panel/timebased/timebased.cpp

@@ -187,4 +187,9 @@ void TimeBasedPanel::SetMarker()
   GetTimeBasedWidget()->SetMarker();
 }
 
+void TimeBasedPanel::ToggleShowAll()
+{
+  GetTimeBasedWidget()->ToggleShowAll();
+}
+
 OLIVE_NAMESPACE_EXIT

app/panel/timebased/timebased.h

@@ -78,6 +78,8 @@ public:
 
   virtual void SetMarker() override;
 
+  virtual void ToggleShowAll() override;
+
 public slots:
   void SetTimebase(const rational& timebase);
 

app/widget/panel/panel.h

@@ -144,6 +144,8 @@ public:
 
   virtual void PasteInsert(){}
 
+  virtual void ToggleShowAll(){}
+
 protected:
   /**
    * @brief paintEvent

app/widget/timebased/timebased.cpp

@@ -35,7 +35,8 @@ TimeBasedWidget::TimeBasedWidget(bool ruler_text_visible, bool ruler_cache_statu
   TimelineScaledWidget(parent),
   viewer_node_(nullptr),
   auto_max_scrollbar_(false),
-  points_(nullptr)
+  points_(nullptr),
+  toggle_show_all_(false)
 {
   ruler_ = new TimeRuler(ruler_text_visible, ruler_cache_status_visible, this);
   connect(ruler_, &TimeRuler::TimeChanged, this, &TimeBasedWidget::SetTimeAndSignal);
@@ -164,6 +165,8 @@ void TimeBasedWidget::ScaleChangedEvent(const double &scale)
   ruler_->SetScale(scale);
 
   UpdateMaximumScroll();
+
+  toggle_show_all_ = false;
 }
 
 void TimeBasedWidget::SetAutoMaxScrollBar(bool e)
@@ -433,4 +436,30 @@ void TimeBasedWidget::SetMarker()
   }
 }
 
+void TimeBasedWidget::ToggleShowAll()
+{
+  if (!GetConnectedNode()) {
+    return;
+  }
+
+  if (toggle_show_all_) {
+    SetScale(toggle_show_all_old_scale_);
+    toggle_show_all_ = false;
+  } else {
+    int w;
+
+    if (timeline_views_.isEmpty()) {
+      w = width();
+    } else {
+      w = timeline_views_.first()->width();
+    }
+
+    w = w / 10 * 9;
+
+    toggle_show_all_old_scale_ = GetScale();
+    SetScale(w / GetConnectedNode()->Length().toDouble());
+    toggle_show_all_ = true;
+  }
+}
+
 OLIVE_NAMESPACE_EXIT

app/widget/timebased/timebased.h

@@ -84,6 +84,8 @@ public slots:
 
   void SetMarker();
 
+  void ToggleShowAll();
+
   TimeRuler* ruler() const;
 
 protected slots:
@@ -158,6 +160,10 @@ private:
 
   QList<TimelineViewBase*> timeline_views_;
 
+  bool toggle_show_all_;
+
+  double toggle_show_all_old_scale_;
+
 private slots:
   void UpdateMaximumScroll();
 

app/window/mainwindow/mainmenu.cpp

@@ -102,7 +102,7 @@ MainMenu::MainMenu(QMainWindow *parent) :
   view_zoom_out_item_ = view_menu_->AddItem("zoomout", this, SLOT(ZoomOutTriggered()), "-");
   view_increase_track_height_item_ = view_menu_->AddItem("vzoomin", this, SLOT(IncreaseTrackHeightTriggered()), "Ctrl+=");
   view_decrease_track_height_item_ = view_menu_->AddItem("vzoomout", this, SLOT(DecreaseTrackHeightTriggered()), "Ctrl+-");
-  view_show_all_item_ = view_menu_->AddItem("showall", nullptr, nullptr, "\\");
+  view_show_all_item_ = view_menu_->AddItem("showall", this, SLOT(ToggleShowAllTriggered()), "\\");
   view_show_all_item_->setCheckable(true);
   view_menu_->addSeparator();
 
@@ -519,6 +519,11 @@ void MainMenu::FullScreenViewerTriggered()
   PanelManager::instance()->MostRecentlyFocused<ViewerPanel>()->SetFullScreen();
 }
 
+void MainMenu::ToggleShowAllTriggered()
+{
+  PanelManager::instance()->CurrentlyFocused()->ToggleShowAll();
+}
+
 void MainMenu::Retranslate()
 {
   // MenuShared is not a QWidget and therefore does not receive a LanguageEvent, we use MainMenu's to update it

app/window/mainwindow/mainmenu.h

@@ -146,6 +146,8 @@ private slots:
 
   void FullScreenViewerTriggered();
 
+  void ToggleShowAllTriggered();
+
 private:
   /**
    * @brief Set strings based on the current application language.