Scene Kit Session WWDC 2013/ASCAppDelegate.m
/* |
File: ASCAppDelegate.m |
Abstract: This is the main controller for the application. It instantiates and runs a presentation. |
Version: 1.1 |
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*/ |
#import "ASCAppDelegate.h" |
#import <IOKit/pwr_mgt/IOPMLib.h> |
@implementation ASCAppDelegate { |
ASCPresentationViewController *_presentationViewController; |
IOPMAssertionID _assertionID; |
} |
- (void)applicationWillFinishLaunching:(NSNotification *)notification { |
[self disableDisplaySleeping]; |
// Create a presentation from a plist file |
_presentationViewController = [[ASCPresentationViewController alloc] initWithContentsOfFile:@"Scene Kit Presentation"]; |
_presentationViewController.delegate = self; |
// Populate the 'Go' menu for direct access to slides |
[self populateGoMenu]; |
// Start the presentation |
[self.window.contentView addSubview:_presentationViewController.view]; |
_presentationViewController.view.frame = [self.window.contentView bounds]; |
_presentationViewController.view.autoresizingMask = NSViewWidthSizable | NSViewHeightSizable; |
} |
- (void)applicationWillTerminate:(NSNotification *)notification { |
[self enableDisplaySleeping]; |
} |
#pragma mark - Presentation delegate |
- (void)presentationViewController:(ASCPresentationViewController *)presentationViewController willPresentSlideAtIndex:(NSUInteger)slideIndex step:(NSUInteger)step { |
// Update the window's title depending on the current slide |
if (step == 0) { |
self.window.title = [NSString stringWithFormat:@"SceneKit WWDC 2013 - slide %ld", slideIndex]; |
} else { |
self.window.title = [NSString stringWithFormat:@"SceneKit WWDC 2013 - slide %ld step %ld", slideIndex, step]; |
} |
} |
#pragma mark - 'Go' menu |
- (void)populateGoMenu { |
for (NSUInteger i = 0; i < _presentationViewController.numberOfSlides; i++) { |
NSString *slideName = NSStringFromClass([_presentationViewController classOfSlideAtIndex:i]); |
NSString *title = [slideName stringByReplacingCharactersInRange:NSMakeRange(0, 8) withString:[NSString stringWithFormat:@"%lu ", (unsigned long)i]]; |
NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:title action:@selector(goTo:) keyEquivalent:@""]; |
item.representedObject = @(i); |
[_goMenu addItem:item]; |
} |
} |
#pragma mark - Actions |
- (IBAction)nextSlide:(id)sender { |
[_presentationViewController goToNextSlideStep]; |
} |
- (IBAction)previousSlide:(id)sender { |
[_presentationViewController goToPreviousSlide]; |
} |
- (IBAction)goTo:(NSMenuItem *)sender { |
NSInteger index = [sender.representedObject integerValue]; |
[_presentationViewController goToSlideAtIndex:index]; |
} |
- (IBAction)toggleCursor:(id)sender { |
static BOOL hidden = NO; |
if (hidden) { |
[NSCursor unhide]; |
hidden = NO; |
} else { |
[NSCursor hide]; |
hidden = YES; |
} |
} |
#pragma mark - NSApplicationDelegate |
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender { |
return YES; |
} |
#pragma mark - Sleep |
- (void)disableDisplaySleeping { |
CFStringRef reasonForActivity = CFSTR("Scene Kit Presentation"); |
IOPMAssertionCreateWithName(kIOPMAssertionTypeNoDisplaySleep, kIOPMAssertionLevelOn, reasonForActivity, &_assertionID); |
} |
- (void)enableDisplaySleeping { |
if (_assertionID) |
IOPMAssertionRelease(_assertionID); |
} |
@end |
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