(UI CocoaTouch) Implement toggle

apple/iOS/platform.h

@@ -43,6 +43,7 @@ const void* apple_get_frontend_settings(void);
 + (RetroArch_iOS*)get;
 
 - (void)showGameView;
+- (void)toggleUI;
 
 - (void)loadingCore:(NSString*)core withFile:(const char*)file;
 - (void)unloadingCore;

apple/iOS/platform.m

@@ -362,16 +362,19 @@ enum
    [[UIApplication sharedApplication] setIdleTimerDisabled:true];
    [self.window setRootViewController:[RAGameView get]];
 
-   runloop->is_paused = false;
-   runloop->is_idle = false;
+   runloop->is_paused                     = false;
+   runloop->is_idle                       = false;
+   runloop->ui_companion_is_on_foreground = false;
 }
 
 - (IBAction)showPauseMenu:(id)sender
 {
    runloop_t *runloop = rarch_main_get_ptr();
 
-   runloop->is_paused = true;
-   runloop->is_idle   = true;
+   runloop->is_paused                     = true;
+   runloop->is_idle                       = true;
+   runloop->ui_companion_is_on_foreground = true;
+
    [[UIApplication sharedApplication] setStatusBarHidden:false withAnimation:UIStatusBarAnimationNone];
    [[UIApplication sharedApplication] setIdleTimerDisabled:false];
    [self.window setRootViewController:self];
@@ -385,6 +388,20 @@ enum
    [self showGameView];
 }
 
+- (void)toggleUI
+{
+   runloop_t *runloop = rarch_main_get_ptr();
+
+   if (runloop->ui_companion_is_on_foreground)
+   {
+      [self showGameView];
+   }
+   else
+   {
+      [self showPauseMenu:self];
+   }
+}
+
 - (void)unloadingCore
 {
    [self showPauseMenu:self];

runloop.h

@@ -46,6 +46,7 @@ typedef struct runloop
    /* Lifecycle state checks. */
    bool is_paused;
    bool is_idle;
+   bool ui_companion_is_on_foreground;
    bool is_menu;
    bool is_slowmotion;
 

ui/drivers/ui_cocoatouch.m

@@ -53,6 +53,16 @@ static void ui_companion_cocoatouch_notify_content_loaded(void *data)
       [ap showGameView];
 }
 
+static void ui_companion_cocoatouch_toggle(void *data)
+{
+   RetroArch_iOS *ap   = (RetroArch_iOS *)apple_platform;
+
+   (void)data;
+
+   if (ap)
+      [ap toggleUI];
+}
+
 static int ui_companion_cocoatouch_iterate(void *data, unsigned action)
 {
    (void)data;
@@ -84,7 +94,7 @@ const ui_companion_driver_t ui_companion_cocoatouch = {
    ui_companion_cocoatouch_init,
    ui_companion_cocoatouch_deinit,
    ui_companion_cocoatouch_iterate,
-   NULL,
+   ui_companion_cocoatouch_toggle,
    ui_companion_cocoatouch_notify_content_loaded,
    "cocoatouch",
 };