/*

Simple DirectMedia Layer

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"

#import <Foundation/Foundation.h>

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);

@autoreleasepool {

/* Some iOS system functionality (such as Dictation on the on-screen

keyboard) uses its own OpenGL ES context but doesn't restore the

previous one when it's done. This is a workaround to make sure the

expected SDL-created OpenGL ES context is active after the OS is

finished running its own code for the frame. If this isn't done, the

app may crash or have other nasty symptoms when Dictation is used.

*/

EAGLContext *context = (__bridge EAGLContext *) SDL_GL_GetCurrentContext();

if (context != NULL && [EAGLContext currentContext] != context) {

[EAGLContext setCurrentContext:context];

}

}

}

#endif /* SDL_VIDEO_DRIVER_UIKIT */

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