src/video/uikit/SDL_uikitevents.m - third_party/sdl - Git at Google

 /*
   Simple DirectMedia Layer
   Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>

   This software is provided 'as-is', without any express or implied
   warranty.  In no event will the authors be held liable for any damages
   arising from the use of this software.

   Permission is granted to anyone to use this software for any purpose,
   including commercial applications, and to alter it and redistribute it
   freely, subject to the following restrictions:

   1. The origin of this software must not be misrepresented; you must not
      claim that you wrote the original software. If you use this software
      in a product, an acknowledgment in the product documentation would be
      appreciated but is not required.
   2. Altered source versions must be plainly marked as such, and must not be
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
 #include "../../SDL_internal.h"

 #if SDL_VIDEO_DRIVER_UIKIT

 #include "../../events/SDL_events_c.h"

 #include "SDL_uikitvideo.h"
 #include "SDL_uikitevents.h"
 #include "SDL_uikitopengles.h"

 #import <Foundation/Foundation.h>

 #if (__IPHONE_OS_VERSION_MAX_ALLOWED >= 140000) || (__APPLETV_OS_VERSION_MAX_ALLOWED >= 140000) || (__MAC_OS_VERSION_MAX_ALLOWED > 1500000)
 #import <GameController/GameController.h>

 #define ENABLE_GCKEYBOARD
 #define ENABLE_GCMOUSE
 #endif

 static BOOL UIKit_EventPumpEnabled = YES;

 void
 SDL_iPhoneSetEventPump(SDL_bool enabled)
 {
     UIKit_EventPumpEnabled = enabled;
 }

 void
 UIKit_PumpEvents(_THIS)
 {
     if (!UIKit_EventPumpEnabled) {
         return;
     }

     /* Let the run loop run for a short amount of time: long enough for
        touch events to get processed (which is important to get certain
        elements of Game Center's GKLeaderboardViewController to respond
        to touch input), but not long enough to introduce a significant
        delay in the rest of the app.
     */
     const CFTimeInterval seconds = 0.000002;

     /* Pump most event types. */
     SInt32 result;
     do {
         result = CFRunLoopRunInMode(kCFRunLoopDefaultMode, seconds, TRUE);
     } while (result == kCFRunLoopRunHandledSource);

     /* Make sure UIScrollView objects scroll properly. */
     do {
         result = CFRunLoopRunInMode((CFStringRef)UITrackingRunLoopMode, seconds, TRUE);
     } while(result == kCFRunLoopRunHandledSource);

     /* See the comment in the function definition. */
 #if SDL_VIDEO_OPENGL_ES || SDL_VIDEO_OPENGL_ES2
     UIKit_GL_RestoreCurrentContext();
 #endif
 }

 #ifdef ENABLE_GCKEYBOARD

 static SDL_bool keyboard_connected = SDL_FALSE;
 static id keyboard_connect_observer = nil;
 static id keyboard_disconnect_observer = nil;

 static void OnGCKeyboardConnected(GCKeyboard *keyboard) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
 {
     keyboard_connected = SDL_TRUE;
     keyboard.keyboardInput.keyChangedHandler = ^(GCKeyboardInput *keyboard, GCControllerButtonInput *key, GCKeyCode keyCode, BOOL pressed)
     {
         SDL_SendKeyboardKey(pressed ? SDL_PRESSED : SDL_RELEASED, (SDL_Scancode)keyCode);
     };

 	dispatch_queue_t queue = dispatch_queue_create( "org.libsdl.input.keyboard", DISPATCH_QUEUE_SERIAL );
 	dispatch_set_target_queue( queue, dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_HIGH, 0 ) );
 	keyboard.handlerQueue = queue;
 }

 static void OnGCKeyboardDisconnected(GCKeyboard *keyboard) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
 {
     keyboard.keyboardInput.keyChangedHandler = nil;
     keyboard_connected = SDL_FALSE;
 }

 void SDL_InitGCKeyboard(void)
 {
     @autoreleasepool {
         if (@available(iOS 14.0, tvOS 14.0, *)) {
             NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

             keyboard_connect_observer = [center addObserverForName:GCKeyboardDidConnectNotification
                                                             object:nil
                                                              queue:nil
                                                         usingBlock:^(NSNotification *note) {
                                                             GCKeyboard *keyboard = note.object;
                                                             OnGCKeyboardConnected(keyboard);
                                                         }];

             keyboard_disconnect_observer = [center addObserverForName:GCKeyboardDidDisconnectNotification
                                                                object:nil
                                                                 queue:nil
                                                            usingBlock:^(NSNotification *note) {
                                                                 GCKeyboard *keyboard = note.object;
                                                                 OnGCKeyboardDisconnected(keyboard);
                                                            }];

             if (GCKeyboard.coalescedKeyboard != nil) {
                 OnGCKeyboardConnected(GCKeyboard.coalescedKeyboard);
             }
         }
     }
 }

 SDL_bool SDL_HasGCKeyboard(void)
 {
     return keyboard_connected;
 }

 void SDL_QuitGCKeyboard(void)
 {
     @autoreleasepool {
         if (@available(iOS 14.0, tvOS 14.0, *)) {
             NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

             if (keyboard_connect_observer) {
                 [center removeObserver:keyboard_connect_observer name:GCKeyboardDidConnectNotification object:nil];
                 keyboard_connect_observer = nil;
             }

             if (keyboard_disconnect_observer) {
                 [center removeObserver:keyboard_disconnect_observer name:GCKeyboardDidDisconnectNotification object:nil];
                 keyboard_disconnect_observer = nil;
             }

             if (GCKeyboard.coalescedKeyboard != nil) {
                 OnGCKeyboardDisconnected(GCKeyboard.coalescedKeyboard);
             }
         }
     }
 }

 #else

 void SDL_InitGCKeyboard(void)
 {
 }

 SDL_bool SDL_HasGCKeyboard(void)
 {
     return SDL_FALSE;
 }

 void SDL_QuitGCKeyboard(void)
 {
 }

 #endif /* ENABLE_GCKEYBOARD */


 #ifdef ENABLE_GCMOUSE

 static int mice_connected = 0;
 static id mouse_connect_observer = nil;
 static id mouse_disconnect_observer = nil;

 static int SetGCMouseRelativeMode(SDL_bool enabled)
 {
     /* We'll always send relative motion and we can't warp, so nothing to do here */
     return 0;
 }

 static void OnGCMouseButtonChanged(SDL_MouseID mouseID, Uint8 button, BOOL pressed)
 {
     SDL_SendMouseButton(SDL_GetMouseFocus(), mouseID, pressed ? SDL_PRESSED : SDL_RELEASED, button);
 }

 static void OnGCMouseConnected(GCMouse *mouse) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
 {
     SDL_MouseID mouseID = mice_connected;

     mouse.mouseInput.leftButton.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
     {
         OnGCMouseButtonChanged(mouseID, SDL_BUTTON_LEFT, pressed);
     };
     mouse.mouseInput.middleButton.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
     {
         OnGCMouseButtonChanged(mouseID, SDL_BUTTON_MIDDLE, pressed);
     };
     mouse.mouseInput.rightButton.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
     {
         OnGCMouseButtonChanged(mouseID, SDL_BUTTON_RIGHT, pressed);
     };

     int auxiliary_button = SDL_BUTTON_X1;
     for (GCControllerButtonInput *button in mouse.mouseInput.auxiliaryButtons) {
         button.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
         {
             OnGCMouseButtonChanged(mouseID, auxiliary_button, pressed);
         };
         ++auxiliary_button;
     }

     mouse.mouseInput.mouseMovedHandler = ^(GCMouseInput *mouse, float deltaX, float deltaY)
     {
 		SDL_SendMouseMotion(SDL_GetMouseFocus(), mouseID, SDL_TRUE, (int)deltaX, -(int)deltaY);
     };

 	dispatch_queue_t queue = dispatch_queue_create( "org.libsdl.input.mouse", DISPATCH_QUEUE_SERIAL );
 	dispatch_set_target_queue( queue, dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_HIGH, 0 ) );
 	mouse.handlerQueue = queue;

     ++mice_connected;
 }

 static void OnGCMouseDisconnected(GCMouse *mouse) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
 {
     --mice_connected;

     mouse.mouseInput.mouseMovedHandler = nil;

     mouse.mouseInput.leftButton.pressedChangedHandler = nil;
     mouse.mouseInput.middleButton.pressedChangedHandler = nil;
     mouse.mouseInput.rightButton.pressedChangedHandler = nil;

     for (GCControllerButtonInput *button in mouse.mouseInput.auxiliaryButtons) {
         button.pressedChangedHandler = nil;
     }
 }

 void SDL_InitGCMouse(void)
 {
 	@autoreleasepool {
 		/* There is a bug where mouse accumulates duplicate deltas over time in iOS 14.0 */
         if (@available(iOS 14.1, tvOS 14.1, *)) {
             NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

             mouse_connect_observer = [center addObserverForName:GCMouseDidConnectNotification
                                                          object:nil
                                                           queue:nil
                                                      usingBlock:^(NSNotification *note) {
                                                          GCMouse *mouse = note.object;
                                                          OnGCMouseConnected(mouse);
                                                      }];

             mouse_disconnect_observer = [center addObserverForName:GCMouseDidDisconnectNotification
                                                             object:nil
                                                              queue:nil
                                                         usingBlock:^(NSNotification *note) {
                                                             GCMouse *mouse = note.object;
                                                             OnGCMouseDisconnected(mouse);
                                                        }];

             for (GCMouse *mouse in [GCMouse mice]) {
                 OnGCMouseConnected(mouse);
             }

             SDL_GetMouse()->SetRelativeMouseMode = SetGCMouseRelativeMode;
         }
     }
 }

 SDL_bool SDL_HasGCMouse(void)
 {
     return (mice_connected > 0);
 }

 void SDL_QuitGCMouse(void)
 {
     @autoreleasepool {
         if (@available(iOS 14.1, tvOS 14.1, *)) {
             NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

             if (mouse_connect_observer) {
                 [center removeObserver:mouse_connect_observer name:GCMouseDidConnectNotification object:nil];
                 mouse_connect_observer = nil;
             }

             if (mouse_disconnect_observer) {
                 [center removeObserver:mouse_disconnect_observer name:GCMouseDidDisconnectNotification object:nil];
                 mouse_disconnect_observer = nil;
             }

             for (GCMouse *mouse in [GCMouse mice]) {
                 OnGCMouseDisconnected(mouse);
             }

             SDL_GetMouse()->SetRelativeMouseMode = NULL;
         }
     }
 }

 #else

 void SDL_InitGCMouse(void)
 {
 }

 SDL_bool SDL_HasGCMouse(void)
 {
     return SDL_FALSE;
 }

 void SDL_QuitGCMouse(void)
 {
 }

 #endif /* ENABLE_GCMOUSE */

 #endif /* SDL_VIDEO_DRIVER_UIKIT */

 /* vi: set ts=4 sw=4 expandtab: */
	/*
	Simple DirectMedia Layer
	Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>

	This software is provided 'as-is', without any express or implied
	warranty. In no event will the authors be held liable for any damages
	arising from the use of this software.

	Permission is granted to anyone to use this software for any purpose,
	including commercial applications, and to alter it and redistribute it
	freely, subject to the following restrictions:

	1. The origin of this software must not be misrepresented; you must not
	claim that you wrote the original software. If you use this software
	in a product, an acknowledgment in the product documentation would be
	appreciated but is not required.
	2. Altered source versions must be plainly marked as such, and must not be
	misrepresented as being the original software.
	3. This notice may not be removed or altered from any source distribution.
	*/
	#include "../../SDL_internal.h"

	#if SDL_VIDEO_DRIVER_UIKIT

	#include "../../events/SDL_events_c.h"

	#include "SDL_uikitvideo.h"
	#include "SDL_uikitevents.h"
	#include "SDL_uikitopengles.h"

	#import <Foundation/Foundation.h>

	#if (__IPHONE_OS_VERSION_MAX_ALLOWED >= 140000) \|\| (__APPLETV_OS_VERSION_MAX_ALLOWED >= 140000) \|\| (__MAC_OS_VERSION_MAX_ALLOWED > 1500000)
	#import <GameController/GameController.h>

	#define ENABLE_GCKEYBOARD
	#define ENABLE_GCMOUSE
	#endif

	static BOOL UIKit_EventPumpEnabled = YES;

	void
	SDL_iPhoneSetEventPump(SDL_bool enabled)
	{
	UIKit_EventPumpEnabled = enabled;
	}

	void
	UIKit_PumpEvents(_THIS)
	{
	if (!UIKit_EventPumpEnabled) {
	return;
	}

	/* Let the run loop run for a short amount of time: long enough for
	touch events to get processed (which is important to get certain
	elements of Game Center's GKLeaderboardViewController to respond
	to touch input), but not long enough to introduce a significant
	delay in the rest of the app.
	*/
	const CFTimeInterval seconds = 0.000002;

	/* Pump most event types. */
	SInt32 result;
	do {
	result = CFRunLoopRunInMode(kCFRunLoopDefaultMode, seconds, TRUE);
	} while (result == kCFRunLoopRunHandledSource);

	/* Make sure UIScrollView objects scroll properly. */
	do {
	result = CFRunLoopRunInMode((CFStringRef)UITrackingRunLoopMode, seconds, TRUE);
	} while(result == kCFRunLoopRunHandledSource);

	/* See the comment in the function definition. */
	#if SDL_VIDEO_OPENGL_ES \|\| SDL_VIDEO_OPENGL_ES2
	UIKit_GL_RestoreCurrentContext();
	#endif
	}

	#ifdef ENABLE_GCKEYBOARD

	static SDL_bool keyboard_connected = SDL_FALSE;
	static id keyboard_connect_observer = nil;
	static id keyboard_disconnect_observer = nil;

	static void OnGCKeyboardConnected(GCKeyboard *keyboard) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
	{
	keyboard_connected = SDL_TRUE;
	keyboard.keyboardInput.keyChangedHandler = ^(GCKeyboardInput keyboard, GCControllerButtonInput key, GCKeyCode keyCode, BOOL pressed)
	{
	SDL_SendKeyboardKey(pressed ? SDL_PRESSED : SDL_RELEASED, (SDL_Scancode)keyCode);
	};

	dispatch_queue_t queue = dispatch_queue_create( "org.libsdl.input.keyboard", DISPATCH_QUEUE_SERIAL );
	dispatch_set_target_queue( queue, dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_HIGH, 0 ) );
	keyboard.handlerQueue = queue;
	}

	static void OnGCKeyboardDisconnected(GCKeyboard *keyboard) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
	{
	keyboard.keyboardInput.keyChangedHandler = nil;
	keyboard_connected = SDL_FALSE;
	}

	void SDL_InitGCKeyboard(void)
	{
	@autoreleasepool {
	if (@available(iOS 14.0, tvOS 14.0, *)) {
	NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

	keyboard_connect_observer = [center addObserverForName:GCKeyboardDidConnectNotification
	object:nil
	queue:nil
	usingBlock:^(NSNotification *note) {
	GCKeyboard *keyboard = note.object;
	OnGCKeyboardConnected(keyboard);
	}];

	keyboard_disconnect_observer = [center addObserverForName:GCKeyboardDidDisconnectNotification
	object:nil
	queue:nil
	usingBlock:^(NSNotification *note) {
	GCKeyboard *keyboard = note.object;
	OnGCKeyboardDisconnected(keyboard);
	}];

	if (GCKeyboard.coalescedKeyboard != nil) {
	OnGCKeyboardConnected(GCKeyboard.coalescedKeyboard);
	}
	}
	}
	}

	SDL_bool SDL_HasGCKeyboard(void)
	{
	return keyboard_connected;
	}

	void SDL_QuitGCKeyboard(void)
	{
	@autoreleasepool {
	if (@available(iOS 14.0, tvOS 14.0, *)) {
	NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

	if (keyboard_connect_observer) {
	[center removeObserver:keyboard_connect_observer name:GCKeyboardDidConnectNotification object:nil];
	keyboard_connect_observer = nil;
	}

	if (keyboard_disconnect_observer) {
	[center removeObserver:keyboard_disconnect_observer name:GCKeyboardDidDisconnectNotification object:nil];
	keyboard_disconnect_observer = nil;
	}

	if (GCKeyboard.coalescedKeyboard != nil) {
	OnGCKeyboardDisconnected(GCKeyboard.coalescedKeyboard);
	}
	}
	}
	}

	#else

	void SDL_InitGCKeyboard(void)
	{
	}

	SDL_bool SDL_HasGCKeyboard(void)
	{
	return SDL_FALSE;
	}

	void SDL_QuitGCKeyboard(void)
	{
	}

	#endif /* ENABLE_GCKEYBOARD */


	#ifdef ENABLE_GCMOUSE

	static int mice_connected = 0;
	static id mouse_connect_observer = nil;
	static id mouse_disconnect_observer = nil;

	static int SetGCMouseRelativeMode(SDL_bool enabled)
	{
	/* We'll always send relative motion and we can't warp, so nothing to do here */
	return 0;
	}

	static void OnGCMouseButtonChanged(SDL_MouseID mouseID, Uint8 button, BOOL pressed)
	{
	SDL_SendMouseButton(SDL_GetMouseFocus(), mouseID, pressed ? SDL_PRESSED : SDL_RELEASED, button);
	}

	static void OnGCMouseConnected(GCMouse *mouse) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
	{
	SDL_MouseID mouseID = mice_connected;

	mouse.mouseInput.leftButton.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
	{
	OnGCMouseButtonChanged(mouseID, SDL_BUTTON_LEFT, pressed);
	};
	mouse.mouseInput.middleButton.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
	{
	OnGCMouseButtonChanged(mouseID, SDL_BUTTON_MIDDLE, pressed);
	};
	mouse.mouseInput.rightButton.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
	{
	OnGCMouseButtonChanged(mouseID, SDL_BUTTON_RIGHT, pressed);
	};

	int auxiliary_button = SDL_BUTTON_X1;
	for (GCControllerButtonInput *button in mouse.mouseInput.auxiliaryButtons) {
	button.pressedChangedHandler = ^(GCControllerButtonInput *button, float value, BOOL pressed)
	{
	OnGCMouseButtonChanged(mouseID, auxiliary_button, pressed);
	};
	++auxiliary_button;
	}

	mouse.mouseInput.mouseMovedHandler = ^(GCMouseInput *mouse, float deltaX, float deltaY)
	{
	SDL_SendMouseMotion(SDL_GetMouseFocus(), mouseID, SDL_TRUE, (int)deltaX, -(int)deltaY);
	};

	dispatch_queue_t queue = dispatch_queue_create( "org.libsdl.input.mouse", DISPATCH_QUEUE_SERIAL );
	dispatch_set_target_queue( queue, dispatch_get_global_queue( DISPATCH_QUEUE_PRIORITY_HIGH, 0 ) );
	mouse.handlerQueue = queue;

	++mice_connected;
	}

	static void OnGCMouseDisconnected(GCMouse *mouse) API_AVAILABLE(macos(11.0), ios(14.0), tvos(14.0))
	{
	--mice_connected;

	mouse.mouseInput.mouseMovedHandler = nil;

	mouse.mouseInput.leftButton.pressedChangedHandler = nil;
	mouse.mouseInput.middleButton.pressedChangedHandler = nil;
	mouse.mouseInput.rightButton.pressedChangedHandler = nil;

	for (GCControllerButtonInput *button in mouse.mouseInput.auxiliaryButtons) {
	button.pressedChangedHandler = nil;
	}
	}

	void SDL_InitGCMouse(void)
	{
	@autoreleasepool {
	/* There is a bug where mouse accumulates duplicate deltas over time in iOS 14.0 */
	if (@available(iOS 14.1, tvOS 14.1, *)) {
	NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

	mouse_connect_observer = [center addObserverForName:GCMouseDidConnectNotification
	object:nil
	queue:nil
	usingBlock:^(NSNotification *note) {
	GCMouse *mouse = note.object;
	OnGCMouseConnected(mouse);
	}];

	mouse_disconnect_observer = [center addObserverForName:GCMouseDidDisconnectNotification
	object:nil
	queue:nil
	usingBlock:^(NSNotification *note) {
	GCMouse *mouse = note.object;
	OnGCMouseDisconnected(mouse);
	}];

	for (GCMouse *mouse in [GCMouse mice]) {
	OnGCMouseConnected(mouse);
	}

	SDL_GetMouse()->SetRelativeMouseMode = SetGCMouseRelativeMode;
	}
	}
	}

	SDL_bool SDL_HasGCMouse(void)
	{
	return (mice_connected > 0);
	}

	void SDL_QuitGCMouse(void)
	{
	@autoreleasepool {
	if (@available(iOS 14.1, tvOS 14.1, *)) {
	NSNotificationCenter *center = [NSNotificationCenter defaultCenter];

	if (mouse_connect_observer) {
	[center removeObserver:mouse_connect_observer name:GCMouseDidConnectNotification object:nil];
	mouse_connect_observer = nil;
	}

	if (mouse_disconnect_observer) {
	[center removeObserver:mouse_disconnect_observer name:GCMouseDidDisconnectNotification object:nil];
	mouse_disconnect_observer = nil;
	}

	for (GCMouse *mouse in [GCMouse mice]) {
	OnGCMouseDisconnected(mouse);
	}

	SDL_GetMouse()->SetRelativeMouseMode = NULL;
	}
	}
	}

	#else

	void SDL_InitGCMouse(void)
	{
	}

	SDL_bool SDL_HasGCMouse(void)
	{
	return SDL_FALSE;
	}

	void SDL_QuitGCMouse(void)
	{
	}

	#endif /* ENABLE_GCMOUSE */

	#endif /* SDL_VIDEO_DRIVER_UIKIT */

	/* vi: set ts=4 sw=4 expandtab: */