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// -*- Mode: ObjC; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
//
// This file is part of the LibreOffice project.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#import "MLOAnimation.h"
typedef CGFloat (^MLOAnimationCurve)(CGFloat time);
@interface MLOAnimation ()
@property BOOL active,didPost,cancelled;
@property CGFloat frameCount;
@property NSDate * startDate;
@property MLOAnimationBehavior behavior;
@property MLOAnimationFractionType fractionType;
@property (nonatomic,strong) MLOAnimationBlock animation;
@property (nonatomic,strong) MLOAnimationCurve curve;
@end
@implementation MLOAnimation
-(void) linearCurve{
static const MLOAnimationCurve LINEAR = ^(CGFloat completedFraction){
return completedFraction;
};
[self setCurve:LINEAR name:@"LINEAR"];
}
-(void) easeOutCurve{
static const MLOAnimationCurve EASE_OUT = ^(CGFloat completedFraction){
return 1 - completedFraction*completedFraction;
};
[self setCurve:EASE_OUT name:@"EASE_OUT"];
}
-(void) easeInCurve{
static const MLOAnimationCurve EASE_IN = ^(CGFloat completedFraction){
return completedFraction*completedFraction;
};
[self setCurve:EASE_IN name:@"EASE_IN"];
}
-(void)setCurve:(MLOAnimationCurve) curve name:(NSString *) name{
self.curve = curve;
NSLog(@"MLOAnimation curve set to: %@",name);
}
-(void) cancel{
if(_behavior == CANCELABLE){
self.cancelled= YES;
self.active = NO;
[self doPost:nil];
if(_startDate){
NSLog(@"MLOAnimation cancelled after %f millis",[_startDate timeIntervalSinceNow]);
}else{
NSLog(@"MLOAnimation aborted");
}
}else{
NSLog(@"CLOAnimation cannot be cancelled");
}
}
-(BOOL) isCancelled{
return self.cancelled;
}
-(id)initWithBehavior:(BOOL) behavior fractionType:(MLOAnimationFractionType) fractionType animation:(MLOAnimationBlock) animation{
self = [super init];
if(self){
_active=YES;
_duration = DEFAULT_MLO_ANIMATION_DURAION;
_fps = DEFAULT_ANIMATION_FPS;
_behavior=CANCELABLE;
_fractionType = fractionType;
_frameCount = -1.0f;
_startDate = nil;
_didPost =NO;
_cancelled=NO;
[self linearCurve];
self.animation = animation;
}
return self;
}
-(void)animate{
if(!_startDate){
self.startDate = [NSDate date];
_frameCount = _duration *_fps;
if(_frameCount>0){
CGFloat frameDuration = 1.0f/_fps;
NSLog(@"MLOAnimation: duration=%f frameCount=%f fps=%f frameDuration=%f fractionType=%@",_duration,_frameCount,_fps,frameDuration,[self fractionTypeAsString]);
for (CGFloat i = 1; i <= _frameCount; i++) {
[self performSelector:@selector(doFrame:) withObject:[NSNumber numberWithFloat:i] afterDelay: i*frameDuration];
}
[self performSelector:@selector(doPost:) withObject:nil afterDelay:_duration + frameDuration];
}else{
NSLog(@"MLOAnimation cannot run (zero frames)");
}
}
}
-(void) doPost:(NSObject *) niller{
if(!_didPost){
_didPost = YES;
if(_endBlock){
_endBlock();
}
}
}
-(NSString *)fractionTypeAsString{
switch (_fractionType) {
case DELTA_ONLY:
return @"DELTA_ONLY";
case FULL_FRACTION:
return @"FULL_FRACTION";
}
}
-(void)doFrame:(NSNumber *) frame{
if(_active){
CGFloat fFrame = [frame floatValue];
CGFloat currentFraction = _curve(fFrame/_frameCount);
if(_fractionType == DELTA_ONLY){
currentFraction -= _curve( (fFrame-1.0f) /_frameCount);
}
_animation(_curve(currentFraction));
if(fFrame ==_frameCount){
_behavior =MANDATORY;
}
}
}
@end
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