Add a setting for whether labels can be created by typing

Added a setting for whether labels can be created by typing in a label track.
The setting can be changed in either the Tracks menu, or the Tracks category in Preferences.
By default the setting is set to on.

src/LabelTrack.cpp

@@ -1687,7 +1687,9 @@ bool LabelTrack::CaptureKey(wxKeyEvent & event)
       }
    }
    else {
-      if (IsGoodLabelFirstKey(event)) {
+      bool typeToCreateLabel;
+      gPrefs->Read(wxT("/GUI/TypeToCreateLabel"), &typeToCreateLabel, true);
+      if (IsGoodLabelFirstKey(event) && typeToCreateLabel) {
          AudacityProject * pProj = GetActiveProject();
 
          // If we're playing, don't capture if the selection is the same as the

src/Menus.cpp

@@ -920,6 +920,9 @@ void AudacityProject::CreateMenusAndCommands()
          AudioIOBusyFlag);
       c->AddItem(wxT("EditLabels"), _("&Edit Labels..."), FN(OnEditLabels));
 
+      c->AddCheck(wxT("TypeToCreateLabel"), _("&Type to Create a Label (on/off)"),
+                  FN(OnToggleTypeToCreateLabel), 0, AlwaysEnabledFlag, AlwaysEnabledFlag);
+
       c->AddSeparator();
 
       //////////////////////////////////////////////////////////////////////////
@@ -1911,6 +1914,8 @@ void AudacityProject::ModifyToolbarMenus()
    gPrefs->Read(wxT("/GUI/SyncLockTracks"), &active, false);
    SetSyncLock(active);
    mCommandManager.Check(wxT("SyncLock"), active);
+   gPrefs->Read(wxT("/GUI/TypeToCreateLabel"),&active, true);
+   mCommandManager.Check(wxT("TypeToCreateLabel"), active);
 }
 
 // checkActive is a temporary hack that should be removed as soon as we
@@ -6694,6 +6699,15 @@ void AudacityProject::OnEditLabels()
    DoEditLabels();
 }
 
+void AudacityProject::OnToggleTypeToCreateLabel()
+{
+   bool typeToCreateLabel;
+   gPrefs->Read(wxT("/GUI/TypeToCreateLabel"), &typeToCreateLabel, true);
+   gPrefs->Write(wxT("/GUI/TypeToCreateLabel"), !typeToCreateLabel);
+   gPrefs->Flush();
+   ModifyAllProjectToolbarMenus();
+}
+
 void AudacityProject::OnApplyChain()
 {
    BatchProcessDialog dlg(this);

src/Menus.h

@@ -377,6 +377,7 @@ void OnAddLabel();
 void OnAddLabelPlaying();
 void DoEditLabels(LabelTrack *lt = nullptr, int index = -1);
 void OnEditLabels();
+void OnToggleTypeToCreateLabel();
 
         // Effect Menu
 

src/prefs/TracksPrefs.cpp

@@ -144,7 +144,7 @@ void TracksPrefs::PopulateOrExchange(ShuttleGui & S)
                     wxT("/GUI/SelectAllOnNone"),
                     true);
       /* i18n-hint: cut-lines are a lines indicating where to cut.*/
-      S.TieCheckBox(_("Enable cu&t lines"),
+      S.TieCheckBox(_("Enable c&ut lines"),
                     wxT("/GUI/EnableCutLines"),
                     false);
       S.TieCheckBox(_("Enable &dragging of left and right selection edges"),
@@ -156,6 +156,9 @@ void TracksPrefs::PopulateOrExchange(ShuttleGui & S)
       S.TieCheckBox(_("Editing a clip can &move other clips"),
                     wxT("/GUI/EditClipCanMove"),
                     true);
+      S.TieCheckBox(_("&Type to create a label"),
+                    wxT("/GUI/TypeToCreateLabel"),
+                    true);
 #ifdef EXPERIMENTAL_SCROLLING_LIMITS
       S.TieCheckBox(_("Enable scrolling left of &zero"),
                     ScrollingPreferenceKey(),