53 lines
1.6 KiB
Objective-C
53 lines
1.6 KiB
Objective-C
///**********************************************************************************************************************************
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/// GCOneShotEffectTimer.h
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/// GCDrawKit
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///
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/// Created by graham on 24/04/2007.
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/// Released under the Creative Commons license 2007 Apptree.net.
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///
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///
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/// This work is licensed under the Creative Commons Attribution-ShareAlike 2.5 License.
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/// To view a copy of this license, visit http://creativecommons.org/licenses/by-sa/2.5/ or send a letter to
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/// Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA.
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///
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///**********************************************************************************************************************************
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#import <Cocoa/Cocoa.h>
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@interface GCOneShotEffectTimer : NSObject
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{
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NSTimer* _timer;
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NSTimeInterval _start;
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NSTimeInterval _total;
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id _delegate;
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}
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+ (id) oneShotWithTime:(NSTimeInterval) t forDelegate:(id) del;
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@end
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@interface NSObject (OneShotDelegate)
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- (void) oneShotHasReached:(float) relpos;
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- (void) oneShotHasReachedInverse:(float) relpos;
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- (void) oneShotComplete;
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@end
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/* This class wraps up a very simple piece of timer functionality. It sets up a timer that will call the
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delegate frequently with a value from 0..1. Once 1 is reached, it stops.
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This is useful for one-shot type animations such as fading out a window or similar.
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The inverse method is called with interval 1..0.
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The timer starts as soon as it is created.
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The timer attempts to maintain a 30fps rate, and is capped at this value. On slower systems, it will drop
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frames as needed.
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*/ |