libui/darwin/main.m

99 lines
2.9 KiB
Objective-C

// 20 april 2019
#import "uipriv_darwin.h"
@interface uiprivApplication : NSApplication
@end
@implementation uiprivApplication
@end
@interface uiprivApplicationDelegate : NSObject<NSApplicationDelegate>
@end
static uiprivApplication *uiprivApp;
static uiprivApplicationDelegate *uiprivAppDelegate;
@implementation uiprivApplicationDelegate
#if 0
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)app
{
// for debugging
NSLog(@"in applicationShouldTerminate:");
if (uiprivShouldQuit()) {
canQuit = YES;
// this will call terminate:, which is the same as uiQuit()
return NSTerminateNow;
}
return NSTerminateCancel;
}
#endif
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)app
{
return NO;
}
@end
#define errNSAppAlreadyInitialized "NSApp is not of type uiprivApplication; was likely already initialized beforehand"
static const char *initErrors[] = {
errNSAppAlreadyInitialized,
NULL,
};
int uiInit(void *options, uiInitError *err)
{
if (!uiprivInitCheckParams(options, err, initErrors))
return 0;
uiprivApp = [uiprivApplication sharedApplication];
if (![NSApp isKindOfClass:[uiprivApplication class]])
return uiprivInitReturnError(err, errNSAppAlreadyInitialized);
// don't check for a NO return; something (launch services?) causes running from application bundles to always return NO when asking to change activation policy, even if the change is to the same activation policy!
// see https://github.com/andlabs/ui/issues/6
[uiprivApp setActivationPolicy:NSApplicationActivationPolicyRegular];
uiprivAppDelegate = [uiprivApplicationDelegate new];
[uiprivApp setDelegate:uiprivAppDelegate];
uiprivMarkInitialized();
return 1;
}
void uiMain(void)
{
[uiprivApp run];
}
void uiQuit(void)
{
@autoreleasepool {
NSEvent *e;
[uiprivApp stop:uiprivApp];
// stop: won't register until another event has passed; let's synthesize one
// TODO instead of using NSApplicationDefined, create a private event type for libui internal use only
e = [NSEvent otherEventWithType:NSApplicationDefined
location:NSZeroPoint
modifierFlags:0
timestamp:[[NSProcessInfo processInfo] systemUptime]
windowNumber:0
context:[NSGraphicsContext currentContext]
subtype:0
data1:0
data2:0];
[uiprivApp postEvent:e atStart:NO]; // let pending events take priority (this is what PostQuitMessage() on Windows does so we have to do it here too for parity; thanks to mikeash in irc.freenode.net/#macdev for confirming that this parameter should indeed be NO)
}
}
// thanks to mikeash in irc.freenode.net/#macdev for suggesting the use of Grand Central Dispatch for this
void uiQueueMain(void (*f)(void *data), void *data)
{
// dispatch_get_main_queue() is a serial queue so it will not execute multiple uiQueueMain() functions concurrently
// the signature of f matches dispatch_function_t
dispatch_async_f(dispatch_get_main_queue(), data, f);
}