Time Machine dialog can now be toggled by pressing 'T'.

- Note that the dialog is currently empty
 - See src/gui/CommandDialog for example of how to fill this dialog box

src/emucore/Event.hxx

@@ -71,7 +71,7 @@ class Event
       MouseButtonLeftValue, MouseButtonRightValue,
 
       ChangeState, LoadState, SaveState, TakeSnapshot, Quit,
-      PauseMode, MenuMode, CmdMenuMode, DebuggerMode, LauncherMode,
+      PauseMode, OptionsMenuMode, CmdMenuMode, TimeMachineMode, DebuggerMode, LauncherMode,
       Fry, VolumeDecrease, VolumeIncrease,
 
       UIUp, UIDown, UILeft, UIRight, UIHome, UIEnd, UIPgUp, UIPgDown,

src/emucore/EventHandler.cxx

@@ -1227,7 +1227,7 @@ bool EventHandler::eventStateChange(Event::Type type)
         handled = false;
       break;
 
-    case Event::MenuMode:
+    case Event::OptionsMenuMode:
       if(myState == EventHandlerState::EMULATION)
         enterMenuMode(EventHandlerState::OPTIONSMENU);
       else
@@ -1243,6 +1243,15 @@ bool EventHandler::eventStateChange(Event::Type type)
         handled = false;
       break;
 
+    case Event::TimeMachineMode:
+      if(myState == EventHandlerState::EMULATION)
+        enterMenuMode(EventHandlerState::TIMEMACHINE);
+      else if(myState == EventHandlerState::TIMEMACHINE)
+        leaveMenuMode();
+      else
+        handled = false;
+      break;
+
     case Event::DebuggerMode:
       if(myState == EventHandlerState::EMULATION || myState == EventHandlerState::PAUSE)
         enterDebugMode();
@@ -1688,8 +1697,9 @@ void EventHandler::setDefaultKeymap(Event::Type event, EventMode mode)
       setDefaultKey( KBDK_F12,       Event::TakeSnapshot      );
       setDefaultKey( KBDK_BACKSPACE, Event::Fry               );
       setDefaultKey( KBDK_PAUSE,     Event::PauseMode         );
-      setDefaultKey( KBDK_TAB,       Event::MenuMode          );
+      setDefaultKey( KBDK_TAB,       Event::OptionsMenuMode   );
       setDefaultKey( KBDK_BACKSLASH, Event::CmdMenuMode       );
+      setDefaultKey( KBDK_T,         Event::TimeMachineMode   );
       setDefaultKey( KBDK_GRAVE,     Event::DebuggerMode      );
       setDefaultKey( KBDK_ESCAPE,    Event::LauncherMode      );
       break;
@@ -2228,8 +2238,9 @@ EventHandler::ActionList EventHandler::ourEmulActionList[kEmulActionListSize] =
   { Event::VolumeDecrease,         "Decrease volume",          "", false },
   { Event::VolumeIncrease,         "Increase volume",          "", false },
   { Event::PauseMode,              "Pause",                    "", false },
-  { Event::MenuMode,               "Enter options menu mode",  "", false },
-  { Event::CmdMenuMode,            "Toggle command menu mode", "", false },
+  { Event::OptionsMenuMode,        "Enter options menu UI",    "", false },
+  { Event::CmdMenuMode,            "Toggle command menu UI",   "", false },
+  { Event::TimeMachineMode,        "Toggle time machine UI",   "", false },
   { Event::DebuggerMode,           "Toggle debugger mode",     "", false },
   { Event::LauncherMode,           "Enter ROM launcher",       "", false },
   { Event::Quit,                   "Quit",                     "", false },

src/emucore/EventHandler.hxx

@@ -457,7 +457,7 @@ class EventHandler
     enum {
       kComboSize          = 16,
       kEventsPerCombo     = 8,
-      kEmulActionListSize = 79 + kComboSize,
+      kEmulActionListSize = 80 + kComboSize,
       kMenuActionListSize = 14
     };
 

src/gui/TimeMachineDialog.cxx

@@ -19,6 +19,7 @@
 #include "Font.hxx"
 #include "EventHandler.hxx"
 #include "FrameBuffer.hxx"
+#include "FBSurface.hxx"
 #include "OSystem.hxx"
 #include "Widget.hxx"
 #include "TimeMachineDialog.hxx"
@@ -29,11 +30,39 @@ TimeMachineDialog::TimeMachineDialog(OSystem& osystem, DialogContainer& parent,
   : Dialog(osystem, parent)
 {
   const GUI::Font& font = instance().frameBuffer().font();
-  const int buttonWidth = font.getStringWidth("Right Diff B") + 20,
-            buttonHeight = font.getLineHeight() + 6,
+  const int buttonWidth = font.getStringWidth("   ") + 20,
+//            buttonHeight = font.getLineHeight() + 6,
             rowHeight = font.getLineHeight() + 10;
 
+  WidgetArray wid;
+
   // Set real dimensions
-  _w = 3 * (buttonWidth + 5) + 20;
-  _h = 6 * rowHeight + 15;
+  _w = 10 * (buttonWidth + 5) + 20;
+  _h = 2 * rowHeight + 15;
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void TimeMachineDialog::center()
+{
+  // Place on the bottom of the screen, centered horizontally
+  const GUI::Size& screen = instance().frameBuffer().screenSize();
+  const GUI::Rect& dst = surface().dstRect();
+  surface().setDstPos((screen.w - dst.width()) >> 1, screen.h - dst.height() - 10);
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void TimeMachineDialog::loadConfig()
+{
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void TimeMachineDialog::handleCommand(CommandSender* sender, int cmd,
+                                      int data, int id)
+{
+cerr << cmd << endl;
+  switch(cmd)
+  {
+    default:
+      Dialog::handleCommand(sender, cmd, data, 0);
+  }
 }

src/gui/TimeMachineDialog.hxx

@@ -30,6 +30,13 @@ class TimeMachineDialog : public Dialog
     TimeMachineDialog(OSystem& osystem, DialogContainer& parent, int max_w, int max_h);
     virtual ~TimeMachineDialog() = default;
 
+  private:
+    void loadConfig() override;
+    void handleCommand(CommandSender* sender, int cmd, int data, int id) override;
+
+    /** This dialog uses its own positioning, so we override Dialog::center() */
+    void center() override;
+
   private:
     // Following constructors and assignment operators not supported
     TimeMachineDialog() = delete;