diff options
Diffstat (limited to 'Source/3rdParty/SDL2/src/video/cocoa/SDL_cocoamousetap.m')
| -rw-r--r-- | Source/3rdParty/SDL2/src/video/cocoa/SDL_cocoamousetap.m | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/Source/3rdParty/SDL2/src/video/cocoa/SDL_cocoamousetap.m b/Source/3rdParty/SDL2/src/video/cocoa/SDL_cocoamousetap.m deleted file mode 100644 index aa4f152..0000000 --- a/Source/3rdParty/SDL2/src/video/cocoa/SDL_cocoamousetap.m +++ /dev/null @@ -1,286 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 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_COCOA - -#include "SDL_cocoamousetap.h" - -/* Event taps are forbidden in the Mac App Store, so we can only enable this - * code if your app doesn't need to ship through the app store. - * This code makes it so that a grabbed cursor cannot "leak" a mouse click - * past the edge of the window if moving the cursor too fast. - */ -#if SDL_MAC_NO_SANDBOX - -#include "SDL_keyboard.h" -#include "SDL_cocoavideo.h" -#include "../../thread/SDL_systhread.h" - -#include "../../events/SDL_mouse_c.h" - -typedef struct { - CFMachPortRef tap; - CFRunLoopRef runloop; - CFRunLoopSourceRef runloopSource; - SDL_Thread *thread; - SDL_sem *runloopStartedSemaphore; -} SDL_MouseEventTapData; - -static const CGEventMask movementEventsMask = - CGEventMaskBit(kCGEventLeftMouseDragged) - | CGEventMaskBit(kCGEventRightMouseDragged) - | CGEventMaskBit(kCGEventMouseMoved); - -static const CGEventMask allGrabbedEventsMask = - CGEventMaskBit(kCGEventLeftMouseDown) | CGEventMaskBit(kCGEventLeftMouseUp) - | CGEventMaskBit(kCGEventRightMouseDown) | CGEventMaskBit(kCGEventRightMouseUp) - | CGEventMaskBit(kCGEventOtherMouseDown) | CGEventMaskBit(kCGEventOtherMouseUp) - | CGEventMaskBit(kCGEventLeftMouseDragged) | CGEventMaskBit(kCGEventRightMouseDragged) - | CGEventMaskBit(kCGEventMouseMoved); - -static CGEventRef -Cocoa_MouseTapCallback(CGEventTapProxy proxy, CGEventType type, CGEventRef event, void *refcon) -{ - SDL_MouseEventTapData *tapdata = (SDL_MouseEventTapData*)refcon; - SDL_Mouse *mouse = SDL_GetMouse(); - SDL_Window *window = SDL_GetKeyboardFocus(); - NSWindow *nswindow; - NSRect windowRect; - CGPoint eventLocation; - - switch (type) { - case kCGEventTapDisabledByTimeout: - { - CGEventTapEnable(tapdata->tap, true); - return NULL; - } - case kCGEventTapDisabledByUserInput: - { - return NULL; - } - default: - break; - } - - - if (!window || !mouse) { - return event; - } - - if (mouse->relative_mode) { - return event; - } - - if (!(window->flags & SDL_WINDOW_INPUT_GRABBED)) { - return event; - } - - /* This is the same coordinate system as Cocoa uses. */ - nswindow = ((SDL_WindowData *) window->driverdata)->nswindow; - eventLocation = CGEventGetUnflippedLocation(event); - windowRect = [nswindow contentRectForFrameRect:[nswindow frame]]; - - if (!NSMouseInRect(NSPointFromCGPoint(eventLocation), windowRect, NO)) { - - /* This is in CGs global screenspace coordinate system, which has a - * flipped Y. - */ - CGPoint newLocation = CGEventGetLocation(event); - - if (eventLocation.x < NSMinX(windowRect)) { - newLocation.x = NSMinX(windowRect); - } else if (eventLocation.x >= NSMaxX(windowRect)) { - newLocation.x = NSMaxX(windowRect) - 1.0; - } - - if (eventLocation.y <= NSMinY(windowRect)) { - newLocation.y -= (NSMinY(windowRect) - eventLocation.y + 1); - } else if (eventLocation.y > NSMaxY(windowRect)) { - newLocation.y += (eventLocation.y - NSMaxY(windowRect)); - } - - CGWarpMouseCursorPosition(newLocation); - CGAssociateMouseAndMouseCursorPosition(YES); - - if ((CGEventMaskBit(type) & movementEventsMask) == 0) { - /* For click events, we just constrain the event to the window, so - * no other app receives the click event. We can't due the same to - * movement events, since they mean that our warp cursor above - * behaves strangely. - */ - CGEventSetLocation(event, newLocation); - } - } - - return event; -} - -static void -SemaphorePostCallback(CFRunLoopTimerRef timer, void *info) -{ - SDL_SemPost((SDL_sem*)info); -} - -static int -Cocoa_MouseTapThread(void *data) -{ - SDL_MouseEventTapData *tapdata = (SDL_MouseEventTapData*)data; - - /* Tap was created on main thread but we own it now. */ - CFMachPortRef eventTap = tapdata->tap; - if (eventTap) { - /* Try to create a runloop source we can schedule. */ - CFRunLoopSourceRef runloopSource = CFMachPortCreateRunLoopSource(kCFAllocatorDefault, eventTap, 0); - if (runloopSource) { - tapdata->runloopSource = runloopSource; - } else { - CFRelease(eventTap); - SDL_SemPost(tapdata->runloopStartedSemaphore); - /* TODO: Both here and in the return below, set some state in - * tapdata to indicate that initialization failed, which we should - * check in InitMouseEventTap, after we move the semaphore check - * from Quit to Init. - */ - return 1; - } - } else { - SDL_SemPost(tapdata->runloopStartedSemaphore); - return 1; - } - - tapdata->runloop = CFRunLoopGetCurrent(); - CFRunLoopAddSource(tapdata->runloop, tapdata->runloopSource, kCFRunLoopCommonModes); - CFRunLoopTimerContext context = {.info = tapdata->runloopStartedSemaphore}; - /* We signal the runloop started semaphore *after* the run loop has started, indicating it's safe to CFRunLoopStop it. */ - CFRunLoopTimerRef timer = CFRunLoopTimerCreate(kCFAllocatorDefault, CFAbsoluteTimeGetCurrent(), 0, 0, 0, &SemaphorePostCallback, &context); - CFRunLoopAddTimer(tapdata->runloop, timer, kCFRunLoopCommonModes); - CFRelease(timer); - - /* Run the event loop to handle events in the event tap. */ - CFRunLoopRun(); - /* Make sure this is signaled so that SDL_QuitMouseEventTap knows it can safely SDL_WaitThread for us. */ - if (SDL_SemValue(tapdata->runloopStartedSemaphore) < 1) { - SDL_SemPost(tapdata->runloopStartedSemaphore); - } - CFRunLoopRemoveSource(tapdata->runloop, tapdata->runloopSource, kCFRunLoopCommonModes); - - /* Clean up. */ - CGEventTapEnable(tapdata->tap, false); - CFRelease(tapdata->runloopSource); - CFRelease(tapdata->tap); - tapdata->runloopSource = NULL; - tapdata->tap = NULL; - - return 0; -} - -void -Cocoa_InitMouseEventTap(SDL_MouseData* driverdata) -{ - SDL_MouseEventTapData *tapdata; - driverdata->tapdata = SDL_calloc(1, sizeof(SDL_MouseEventTapData)); - tapdata = (SDL_MouseEventTapData*)driverdata->tapdata; - - tapdata->runloopStartedSemaphore = SDL_CreateSemaphore(0); - if (tapdata->runloopStartedSemaphore) { - tapdata->tap = CGEventTapCreate(kCGSessionEventTap, kCGHeadInsertEventTap, - kCGEventTapOptionDefault, allGrabbedEventsMask, - &Cocoa_MouseTapCallback, tapdata); - if (tapdata->tap) { - /* Tap starts disabled, until app requests mouse grab */ - CGEventTapEnable(tapdata->tap, false); - tapdata->thread = SDL_CreateThreadInternal(&Cocoa_MouseTapThread, "Event Tap Loop", 512 * 1024, tapdata); - if (tapdata->thread) { - /* Success - early out. Ownership transferred to thread. */ - return; - } - CFRelease(tapdata->tap); - } - SDL_DestroySemaphore(tapdata->runloopStartedSemaphore); - } - SDL_free(driverdata->tapdata); - driverdata->tapdata = NULL; -} - -void -Cocoa_EnableMouseEventTap(SDL_MouseData *driverdata, SDL_bool enabled) -{ - SDL_MouseEventTapData *tapdata = (SDL_MouseEventTapData*)driverdata->tapdata; - if (tapdata && tapdata->tap) - { - CGEventTapEnable(tapdata->tap, !!enabled); - } -} - -void -Cocoa_QuitMouseEventTap(SDL_MouseData *driverdata) -{ - SDL_MouseEventTapData *tapdata = (SDL_MouseEventTapData*)driverdata->tapdata; - int status; - - if (tapdata == NULL) { - /* event tap was already cleaned up (possibly due to CGEventTapCreate - * returning null.) - */ - return; - } - - /* Ensure that the runloop has been started first. - * TODO: Move this to InitMouseEventTap, check for error conditions that can - * happen in Cocoa_MouseTapThread, and fall back to the non-EventTap way of - * grabbing the mouse if it fails to Init. - */ - status = SDL_SemWaitTimeout(tapdata->runloopStartedSemaphore, 5000); - if (status > -1) { - /* Then stop it, which will cause Cocoa_MouseTapThread to return. */ - CFRunLoopStop(tapdata->runloop); - /* And then wait for Cocoa_MouseTapThread to finish cleaning up. It - * releases some of the pointers in tapdata. */ - SDL_WaitThread(tapdata->thread, &status); - } - - SDL_free(driverdata->tapdata); - driverdata->tapdata = NULL; -} - -#else /* SDL_MAC_NO_SANDBOX */ - -void -Cocoa_InitMouseEventTap(SDL_MouseData *unused) -{ -} - -void -Cocoa_EnableMouseEventTap(SDL_MouseData *driverdata, SDL_bool enabled) -{ -} - -void -Cocoa_QuitMouseEventTap(SDL_MouseData *driverdata) -{ -} - -#endif /* !SDL_MAC_NO_SANDBOX */ - -#endif /* SDL_VIDEO_DRIVER_COCOA */ - -/* vi: set ts=4 sw=4 expandtab: */ |