libui/darwin/main.m

153 lines
4.4 KiB
Objective-C

// 6 april 2015
#import "uipriv_darwin.h"
static BOOL canQuit = NO;
@implementation applicationClass
- (void)sendEvent:(NSEvent *)e
{
if (sendAreaEvents(e) != 0)
return;
[super sendEvent:e];
}
// NSColorPanel always sends changeColor: to the first responder regardless of whether there's a target set on it
// we can override it here (see colorbutton.m)
// thanks to mikeash in irc.freenode.net/#macdev for informing me this is how the first responder chain is initiated
// it turns out NSFontManager also sends changeFont: through this; let's inhibit that here too (see fontbutton.m)
- (BOOL)sendAction:(SEL)sel to:(id)to from:(id)from
{
if (colorButtonInhibitSendAction(sel, from, to))
return NO;
if (fontButtonInhibitSendAction(sel, from, to))
return NO;
return [super sendAction:sel to:to from:from];
}
// likewise, NSFontManager also sends NSFontPanelValidation messages to the first responder, however it does NOT use sendAction:from:to:!
// instead, it uses this one (thanks swillits in irc.freenode.net/#macdev)
// we also need to override it (see fontbutton.m)
- (id)targetForAction:(SEL)sel to:(id)to from:(id)from
{
id override;
if (fontButtonOverrideTargetForAction(sel, from, to, &override))
return override;
return [super targetForAction:sel to:to from:from];
}
// hey look! we're overriding terminate:!
// we're going to make sure we can go back to main() whether Cocoa likes it or not!
// and just how are we going to do that, hm?
// (note: this is called after applicationShouldTerminate:)
- (void)terminate:(id)sender
{
// yes that's right folks: DO ABSOLUTELY NOTHING.
// the magic is [NSApp run] will just... stop.
// well let's not do nothing; let's actually quit our graceful way
NSEvent *e;
if (!canQuit)
implbug("call to [NSApp terminate:] when not ready to terminate; definitely contact andlabs");
[realNSApp() stop:realNSApp()];
// stop: won't register until another event has passed; let's synthesize one
e = [NSEvent otherEventWithType:NSApplicationDefined
location:NSZeroPoint
modifierFlags:0
timestamp:[[NSProcessInfo processInfo] systemUptime]
windowNumber:0
context:[NSGraphicsContext currentContext]
subtype:0
data1:0
data2:0];
[realNSApp() 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)
}
@end
@implementation appDelegate
- (void)dealloc
{
[self.menuManager release];
[super dealloc];
}
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)app
{
// for debugging
NSLog(@"in applicationShouldTerminate:");
if (shouldQuit()) {
canQuit = YES;
// this will call terminate:, which is the same as uiQuit()
return NSTerminateNow;
}
return NSTerminateCancel;
}
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)app
{
return NO;
}
@end
uiInitOptions options;
const char *uiInit(uiInitOptions *o)
{
options = *o;
[applicationClass sharedApplication];
// 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
[realNSApp() setActivationPolicy:NSApplicationActivationPolicyRegular];
[realNSApp() setDelegate:[appDelegate new]];
initAlloc();
// always do this so we always have an application menu
appDelegate().menuManager = [menuManager new];
[realNSApp() setMainMenu:[appDelegate().menuManager makeMenubar]];
setupFontPanel();
return NULL;
}
void uiUninit(void)
{
uninitMenus();
[realNSApp() setDelegate:nil];
[appDelegate() release];
[realNSApp() release];
uninitAlloc();
}
void uiFreeInitError(const char *err)
{
}
void uiMain(void)
{
[realNSApp() run];
}
// TODO make this delayed
void uiQuit(void)
{
canQuit = YES;
[realNSApp() terminate:realNSApp()];
}
// thanks to mikeash in irc.freenode.net/#macdev for suggesting the use of Grand Central Dispatch for this
// TODO will dispatch_get_main_queue() break after _CFRunLoopSetCurrent()?
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);
}