/* |
File: RootViewController.m |
Abstract: The main view controller of this app. |
Version: 1.2 |
|
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Copyright (C) 2013 Apple Inc. All Rights Reserved. |
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*/ |
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#import "RootViewController.h" |
#import "HoverView.h" |
|
@interface RootViewController () |
// Outlet to hold the HoverView instance loaded from HoverView.xib |
@property (nonatomic, strong) IBOutlet HoverView *hoverView; |
@property (nonatomic, strong) NSTimer *hoverViewInactiveTimer; |
@end |
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@implementation RootViewController |
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#pragma mark - View Lifecycle |
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// ------------------------------------------------------------------------------- |
// viewDidLoad |
// ------------------------------------------------------------------------------- |
- (void)viewDidLoad |
{ |
// Load the hoverView from HoverView.xib |
UINib *hoverViewXib = [UINib nibWithNibName:@"HoverView" bundle:nil]; |
[hoverViewXib instantiateWithOwner:self options:nil]; |
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[self.view addSubview:self.hoverView]; |
self.hoverView.alpha = 0.0f; |
} |
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// ------------------------------------------------------------------------------- |
// viewDidLayoutSubviews |
// ------------------------------------------------------------------------------- |
- (void)viewDidLayoutSubviews |
{ |
// Position hoverView in the lower center of the view. |
CGRect frame = self.hoverView.frame; |
frame.origin.x = round((self.view.bounds.size.width - frame.size.width) / 2.0); |
frame.origin.y = self.view.bounds.size.height - 100; |
self.hoverView.frame = frame; |
} |
|
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0 |
// ------------------------------------------------------------------------------- |
// viewDidUnload |
// iOS 6 no longer unloads views under low memory conditions so this method |
// will not be called. On iOS 5, unload anything that will be recreated in |
// viewDidLoad. |
// ------------------------------------------------------------------------------- |
- (void)viewDidUnload |
{ |
[self.hoverView removeFromSuperview]; |
self.hoverView = nil; |
} |
#endif |
|
#pragma mark - Rotation |
|
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_6_0 |
// ------------------------------------------------------------------------------- |
// shouldAutorotateToInterfaceOrientation: |
// Disable rotation on iOS 5.x and earlier. Note, for iOS 6.0 and later all you |
// need is "UISupportedInterfaceOrientations" defined in your Info.plist |
// ------------------------------------------------------------------------------- |
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation |
{ |
return (interfaceOrientation == UIInterfaceOrientationPortrait); |
} |
#endif |
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#pragma mark - Actions |
|
// ------------------------------------------------------------------------------- |
// showHoverView: |
// Helper method that animates the hoverView into or out of view deending on |
// the value of the 'show' parameter. If animating the hoverView into view, |
// it starts a timer to hide the hoverView after a few seconds of inactivity. |
// ------------------------------------------------------------------------------- |
- (void)showHoverView:(BOOL)show |
{ |
// Clear any pending actions. |
[self.hoverViewInactiveTimer invalidate]; |
self.hoverViewInactiveTimer = nil; |
|
[UIView animateWithDuration:0.40 animations:^{ |
|
if (show) |
{ |
// Fade the hoverView into view by affecting its alpha. |
self.hoverView.alpha = 1.0f; |
|
// Start the timeout timer for automatically hiding HoverView |
self.hoverViewInactiveTimer = [NSTimer scheduledTimerWithTimeInterval:3.0 |
target:self |
selector:@selector(timerFired:) |
userInfo:nil |
repeats:NO]; |
} |
else |
{ |
// Fade the hoverView out of view by affecting its alpha. |
self.hoverView.alpha = 0.0f; |
} |
|
}]; |
} |
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// ------------------------------------------------------------------------------- |
// timerFired: |
// Called when the hoverViewInactiveTimer fires. |
// ------------------------------------------------------------------------------- |
- (void)timerFired:(NSTimer *)timer |
{ |
// Time has passed, hide the HoverView. |
[self showHoverView: NO]; |
} |
|
// ------------------------------------------------------------------------------- |
// touchesEnded:withEvent: |
// Called when the user touches our view. |
// ------------------------------------------------------------------------------- |
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event |
{ |
if ([[touches anyObject] tapCount] == 1) |
[self showHoverView:(self.hoverView.alpha != 1.0)]; |
} |
|
// ------------------------------------------------------------------------------- |
// leftAction: |
// IBAction for the pause button. |
// ------------------------------------------------------------------------------- |
- (IBAction)leftAction:(id)sender |
{ |
// user touched the left button in HoverView |
[self showHoverView:NO]; |
} |
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// ------------------------------------------------------------------------------- |
// rightAction: |
// IBAction for the play button. |
// ------------------------------------------------------------------------------- |
- (IBAction)rightAction:(id)sender |
{ |
[self showHoverView:NO]; |
} |
|
@end |