src/video/uikit/SDL_uikitevents.m
author Sam Lantinga
Fri, 27 Jan 2017 06:05:50 -0800
changeset 10856 486aa38c6a88
parent 10737 3406a0f8b041
child 11811 5d94cb6b24d3
permissions -rw-r--r--
Added Thrustmaster Wheel FFB entry to the list of wheels
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "../../SDL_internal.h"
    22 
    23 #if SDL_VIDEO_DRIVER_UIKIT
    24 
    25 #include "../../events/SDL_events_c.h"
    26 
    27 #include "SDL_uikitvideo.h"
    28 #include "SDL_uikitevents.h"
    29 #include "SDL_uikitopengles.h"
    30 
    31 #import <Foundation/Foundation.h>
    32 
    33 static BOOL UIKit_EventPumpEnabled = YES;
    34 
    35 void
    36 SDL_iPhoneSetEventPump(SDL_bool enabled)
    37 {
    38     UIKit_EventPumpEnabled = enabled;
    39 }
    40 
    41 void
    42 UIKit_PumpEvents(_THIS)
    43 {
    44     if (!UIKit_EventPumpEnabled) {
    45         return;
    46     }
    47 
    48     /* Let the run loop run for a short amount of time: long enough for
    49        touch events to get processed (which is important to get certain
    50        elements of Game Center's GKLeaderboardViewController to respond
    51        to touch input), but not long enough to introduce a significant
    52        delay in the rest of the app.
    53     */
    54     const CFTimeInterval seconds = 0.000002;
    55 
    56     /* Pump most event types. */
    57     SInt32 result;
    58     do {
    59         result = CFRunLoopRunInMode(kCFRunLoopDefaultMode, seconds, TRUE);
    60     } while (result == kCFRunLoopRunHandledSource);
    61 
    62     /* Make sure UIScrollView objects scroll properly. */
    63     do {
    64         result = CFRunLoopRunInMode((CFStringRef)UITrackingRunLoopMode, seconds, TRUE);
    65     } while(result == kCFRunLoopRunHandledSource);
    66 
    67     /* See the comment in the function definition. */
    68     UIKit_GL_RestoreCurrentContext();
    69 }
    70 
    71 #endif /* SDL_VIDEO_DRIVER_UIKIT */
    72 
    73 /* vi: set ts=4 sw=4 expandtab: */