timeline: add move in/out to playhead

Fixes #1691

app/window/mainwindow/mainmenu.cpp

@@ -110,6 +110,8 @@ MainMenu::MainMenu(MainWindow *parent) :
   edit_menu_->addSeparator();
   edit_nudge_left_item_ = edit_menu_->AddItem("nudgeleft", this, &MainMenu::NudgeLeftTriggered, "Alt+Left");
   edit_nudge_right_item_ = edit_menu_->AddItem("nudgeright", this, &MainMenu::NudgeRightTriggered, "Alt+Right");
+  edit_move_in_to_playhead_item_ = edit_menu_->AddItem("moveintoplayhead", this, &MainMenu::MoveInToPlayheadTriggered, "[");
+  edit_move_out_to_playhead_item_ = edit_menu_->AddItem("moveouttoplayhead", this, &MainMenu::MoveOutToPlayheadTriggered, "]");
   edit_menu_->addSeparator();
   MenuShared::instance()->AddItemsForInOutMenu(edit_menu_);
   edit_delete_inout_item_ = edit_menu_->AddItem("deleteinout", this, &MainMenu::DeleteInOutTriggered, ";");
@@ -550,6 +552,16 @@ void MainMenu::NudgeRightTriggered()
   PanelManager::instance()->CurrentlyFocused()->NudgeRight();
 }
 
+void MainMenu::MoveInToPlayheadTriggered()
+{
+  PanelManager::instance()->CurrentlyFocused()->MoveInToPlayhead();
+}
+
+void MainMenu::MoveOutToPlayheadTriggered()
+{
+  PanelManager::instance()->CurrentlyFocused()->MoveOutToPlayhead();
+}
+
 void MainMenu::ActionSearchTriggered()
 {
   ActionSearch as(parentWidget());

app/window/mainwindow/mainmenu.h

@@ -156,6 +156,8 @@ private slots:
 
   void NudgeLeftTriggered();
   void NudgeRightTriggered();
+  void MoveInToPlayheadTriggered();
+  void MoveOutToPlayheadTriggered();
 
   void ActionSearchTriggered();
 
@@ -223,6 +225,8 @@ private:
   QAction* edit_edit_to_out_item_;
   QAction* edit_nudge_left_item_;
   QAction* edit_nudge_right_item_;
+  QAction* edit_move_in_to_playhead_item_;
+  QAction* edit_move_out_to_playhead_item_;
   QAction* edit_delete_inout_item_;
   QAction* edit_ripple_delete_inout_item_;
   QAction* edit_set_marker_item_;