IOS: Implement kFeatureVirtualKeyboard to show/hide the keyboard

backends/platform/ios7/ios7_osys_main.cpp

@@ -171,6 +171,7 @@ bool OSystem_iOS7::hasFeature(Feature f) {
 	switch (f) {
 	case kFeatureCursorPalette:
 	case kFeatureFilteringMode:
+	case kFeatureVirtualKeyboard:
 		return true;
 
 	default:
@@ -193,6 +194,9 @@ void OSystem_iOS7::setFeatureState(Feature f, bool enable) {
 	case kFeatureAspectRatioCorrection:
 		_videoContext->asprectRatioCorrection = enable;
 		break;
+	case kFeatureVirtualKeyboard:
+		setShowKeyboard(enable);
+		break;
 
 	default:
 		break;
@@ -207,6 +211,8 @@ bool OSystem_iOS7::getFeatureState(Feature f) {
 		return _videoContext->filtering;
 	case kFeatureAspectRatioCorrection:
 		return _videoContext->asprectRatioCorrection;
+	case kFeatureVirtualKeyboard:
+		return isKeyboardShown();
 
 	default:
 		return false;

backends/platform/ios7/ios7_osys_main.h

@@ -209,6 +209,8 @@ public:
 protected:
 	void initVideoContext();
 	void updateOutputSurface();
+	void setShowKeyboard(bool);
+	bool isKeyboardShown() const;
 
 	void internUpdateScreen();
 	void dirtyFullScreen();

backends/platform/ios7/ios7_osys_video.mm

@@ -583,3 +583,23 @@ void OSystem_iOS7::updateMouseTexture() {
 		[[iOS7AppDelegate iPhoneView] updateMouseCursor];
 	});
 }
+
+void OSystem_iOS7::setShowKeyboard(bool show) {
+	if (show) {
+		execute_on_main_thread(^ {
+			[[iOS7AppDelegate iPhoneView] showKeyboard];
+		});
+	} else {
+		// Do not hide the keyboard in portrait mode as it is shown automatically and not
+		// just when asked with the kFeatureVirtualKeyboard.
+		if (_screenOrientation == kScreenOrientationLandscape || _screenOrientation == kScreenOrientationFlippedLandscape) {
+			execute_on_main_thread(^ {
+				[[iOS7AppDelegate iPhoneView] hideKeyboard];
+			});
+		}
+	}
+}
+
+bool OSystem_iOS7::isKeyboardShown() const {
+	return [[iOS7AppDelegate iPhoneView] isKeyboardShown];
+}

backends/platform/ios7/ios7_video.h

@@ -48,6 +48,7 @@ typedef struct {
 	Common::List<InternalEvent> _events;
 	NSLock *_eventLock;
 	SoftKeyboard *_keyboardView;
+	BOOL _keyboardVisible;
 
 	EAGLContext *_context;
 	GLuint _viewRenderbuffer;
@@ -120,6 +121,10 @@ typedef struct {
 
 - (void)deviceOrientationChanged:(UIDeviceOrientation)orientation;
 
+- (void)showKeyboard;
+- (void)hideKeyboard;
+- (BOOL)isKeyboardShown;
+
 - (void)applicationSuspend;
 
 - (void)applicationResume;

backends/platform/ios7/ios7_video.mm

@@ -413,6 +413,7 @@ uint getSizeNextPOT(uint size) {
 #endif
 
 	_keyboardView = nil;
+	_keyboardVisible = NO;
 	_screenTexture = 0;
 	_overlayTexture = 0;
 	_mouseCursorTexture = 0;
@@ -725,7 +726,7 @@ uint getSizeNextPOT(uint size) {
 		[_keyboardView setInputDelegate:self];
 		[self addSubview:[_keyboardView inputView]];
 		[self addSubview: _keyboardView];
-		[_keyboardView showKeyboard];
+		[self showKeyboard];
 	}
 
 	glBindRenderbuffer(GL_RENDERBUFFER, _viewRenderbuffer); printOpenGLError();
@@ -907,12 +908,26 @@ uint getSizeNextPOT(uint size) {
 
   BOOL isLandscape = (self.bounds.size.width > self.bounds.size.height);
   if (isLandscape) {
-    [_keyboardView hideKeyboard];
+    [self hideKeyboard];
   } else {
-    [_keyboardView showKeyboard];
+    [self showKeyboard];
   }
 }
 
+- (void)showKeyboard {
+	[_keyboardView showKeyboard];
+	_keyboardVisible = YES;
+}
+
+- (void)hideKeyboard {
+	[_keyboardView hideKeyboard];
+	_keyboardVisible = NO;
+}
+
+- (BOOL)isKeyboardShown {
+	return _keyboardVisible;
+}
+
 - (UITouch *)secondTouchOtherTouchThan:(UITouch *)touch in:(NSSet *)set {
 	NSArray *all = [set allObjects];
 	for (UITouch *t in all) {