/* |
File: CAUITransportView.m |
Abstract: |
Version: 1.1.2 |
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without specific prior written permission from Apple. Except as |
expressly stated in this notice, no other rights or licenses, express or |
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works in which the Apple Software may be incorporated. |
|
The Apple Software is provided by Apple on an "AS IS" basis. APPLE |
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION |
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS |
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL |
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Copyright (C) 2014 Apple Inc. All Rights Reserved. |
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*/ |
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#import "CAUITransportView.h" |
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NSString * const kTransportStateChangedNotificiation = @"kTransportStateChangedNotificiation"; |
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@implementation CAUITransportView |
{ |
IBOutlet UILabel *currentTime; |
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IBOutlet CAUITransportButton *playPauseButton; |
IBOutlet CAUITransportButton *recordButton; |
IBOutlet CAUITransportButton *rewindButton; |
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IBOutlet UIImageView *hostIconView; |
UIImage *hostIcon; |
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NSTimer *pollPlayerTimer; |
bool inForeground; |
} |
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@synthesize engine = _engine; |
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#pragma mark Initialization/dealloc |
- (void) awakeFromNib { |
rewindButton.drawingStyle = rewindButtonStyle; |
playPauseButton.drawingStyle = pauseButtonStyle; |
recordButton.drawingStyle = recordButtonStyle; |
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rewindButton.fillColor = [UIColor darkGrayColor].CGColor; |
playPauseButton.fillColor = [UIColor darkGrayColor].CGColor; |
recordButton.fillColor = [UIColor redColor].CGColor; |
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UIApplicationState appstate = [UIApplication sharedApplication].applicationState; |
inForeground = (appstate != UIApplicationStateBackground); |
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[[NSNotificationCenter defaultCenter] addObserver: self |
selector: @selector(appHasGoneInBackground) |
name: UIApplicationDidEnterBackgroundNotification |
object: nil]; |
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[[NSNotificationCenter defaultCenter] addObserver: self |
selector: @selector(appHasGoneForeground) |
name: UIApplicationWillEnterForegroundNotification |
object: nil]; |
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//Set touch listener on host icon |
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hostIconSelected:)]; |
//Default value for cancelsTouchesInView is YES, which will prevent buttons to be clicked |
singleTap.cancelsTouchesInView = NO; |
[hostIconView addGestureRecognizer:singleTap]; |
} |
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- (void) dealloc |
{ |
if (_engine) |
[((NSObject*)_engine) removeObserver:self forKeyPath:kTransportStateChangedNotificiation]; |
[hostIcon release]; |
[hostIconView release]; |
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[super dealloc]; |
} |
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- (void) setDelegateAddObserver: (id<CAUITransportEngine>)inDelegate { |
if (_engine != inDelegate) { |
if (_engine) |
[((NSObject*)_engine) removeObserver:self forKeyPath:kTransportStateChangedNotificiation]; |
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[((NSObject*)_engine) release]; |
_engine = (id)[((NSObject*)inDelegate) retain]; |
[[NSNotificationCenter defaultCenter] addObserver: self |
selector: @selector(updateTransportControls) |
name: kTransportStateChangedNotificiation |
object: _engine]; |
} |
} |
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#pragma mark IBActions |
- (IBAction) togglePlayback:(id) sender { |
if (self.engine) { |
if (!self.engine.connected) |
displayAlertDialog(@"Error", @"Host not connected"); |
else { |
[self.engine togglePlay]; |
[self startPollingPlayer]; |
[self updateTransportControls]; |
} |
} |
} |
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- (IBAction) toggleRecording:(id) sender { |
if (self.engine) { |
if (!self.engine.connected) |
displayAlertDialog(@"Error", @"Host not connected"); |
else { |
[self.engine toggleRecord]; |
[self updateTransportControls]; |
} |
} |
} |
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-(IBAction)rewindAction:(id)sender { |
if (self.engine) { |
if (!self.engine.connected) |
displayAlertDialog(@"Error", @"Host not connected"); |
else { |
[self.engine rewind]; |
[self updateTransportControls]; |
} |
} |
} |
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-(void)hostIconSelected:(UITapGestureRecognizer *)gesture { |
if (self.engine) |
[self.engine gotoHost]; |
} |
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#pragma mark Activation behavior |
-(void) appHasGoneInBackground { |
inForeground = NO; |
[self stopPollingPlayer]; |
} |
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-(void) appHasGoneForeground { |
inForeground = YES; |
if (self.engine && [self.engine isHostPlaying]) |
[self startPollingPlayer]; |
else |
[self stopPollingPlayer]; |
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[self updateTransportControls]; |
} |
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#pragma mark Control updating |
- (void)updateTransportControls |
{ |
if (self.engine) { |
if ([self.engine isHostConnected]) { |
if (!hostIcon) |
hostIcon = [self.engine getAudioUnitIcon]; |
if (hostIcon) { |
hostIconView.userInteractionEnabled = YES; |
[hostIconView setImage:hostIcon]; |
hostIconView.contentMode = UIViewContentModeCenter; |
} |
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recordButton.drawingStyle = [self.engine isHostRecording] ? recordEnabledButtonStyle : recordButtonStyle; |
playPauseButton.drawingStyle = [self.engine isHostPlaying] ? pauseButtonStyle : playButtonStyle; |
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[recordButton setEnabled: [self.engine canRecord]]; |
[currentTime setText: [self.engine getPlayTimeString]]; |
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self.hidden = NO; |
} else |
self.hidden = YES; |
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[self setNeedsDisplay]; |
} |
} |
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-(void) startPollingPlayer { |
if (self.engine && [self.engine isHostConnected] && inForeground ) { |
if (!pollPlayerTimer) { |
pollPlayerTimer = [NSTimer scheduledTimerWithTimeInterval: 0.05 |
target: self |
selector: @selector(pollHost) |
userInfo: nil |
repeats: YES]; |
} |
} |
} |
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-(void)stopPollingPlayer { |
if (pollPlayerTimer) { |
[pollPlayerTimer invalidate]; |
pollPlayerTimer = NULL; |
} |
} |
|
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-(void) pollHost { |
if (self.engine){ |
NSString *playTime = [self.engine getPlayTimeString]; |
[currentTime setText:playTime]; |
} |
} |
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#pragma mark Utility functions |
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void displayAlertDialog(NSString *title, NSString *message) |
{ |
UIAlertView *alert = [[UIAlertView alloc] initWithTitle: title |
message: message |
delegate: nil |
cancelButtonTitle: @"OK" |
otherButtonTitles: nil]; |
[alert show]; |
[alert release]; |
return; |
} |
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@end |
