diff options
Diffstat (limited to 'ios/shared/ios_sharedlo/objective_c/gestures/MLOGestureFlick.m')
| -rw-r--r-- | ios/shared/ios_sharedlo/objective_c/gestures/MLOGestureFlick.m | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/ios/shared/ios_sharedlo/objective_c/gestures/MLOGestureFlick.m b/ios/shared/ios_sharedlo/objective_c/gestures/MLOGestureFlick.m deleted file mode 100644 index bc109f225120..000000000000 --- a/ios/shared/ios_sharedlo/objective_c/gestures/MLOGestureFlick.m +++ /dev/null @@ -1,224 +0,0 @@ -// -*- 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 "MLOGestureFlick.h" -#import "MLOGestureEngine_Impl.h" -#import "MLOMainViewController.h" -#import "MLOScrollerViewController.h" -#import "MLORenderManager.h" -#import "MLOAnimation.h" -#import "mlo_utils.h" - -@interface MLOGestureFlick () -@property MLOGestureEngine * engine; -@property CFTimeInterval startTime; -@property CGPoint startPoint; -@property CGFloat xFlickSpeed,yFlickSpeed; -@property BOOL isEvaluatingFlic; -@end - -static const CGFloat - MAX_SPEED = MLO_IPAD_HEIGHT_IN_PIXELS/0.5f, // max speed is the height per half a second - MAX_DURATION = 5.0f, // 5 seconds flic top - DECCELERATION = 800.0f, - SPEED_IGNORE_LIMIT=2.0f, - FLICK_FPS=50.0f; - -static const NSTimeInterval - MAX_INTERVAL_BETWEEN_EVENTS_THRESHOLD=0.7f; // 70% a second - -@implementation MLOGestureFlick - --(CGFloat) normalizeSpeed:(CGFloat) gestureSpeed currentSpeed:(CGFloat) currentSpeed{ - NSLog(@"GestureSpeed=%f currentSpeed=%f",gestureSpeed,currentSpeed); - if(currentSpeed* gestureSpeed > 0){ - gestureSpeed+=currentSpeed; - } - if(gestureSpeed > MAX_SPEED){ - return MAX_SPEED; - } - if (gestureSpeed < -MAX_SPEED){ - return -MAX_SPEED; - } - if (abs(gestureSpeed) < SPEED_IGNORE_LIMIT) { - return 0; - } - return gestureSpeed; - -} --(id)initWithEngine:(MLOGestureEngine *) engine{ - - self = [self init]; - - if(self){ - self.engine = engine; - _startTime = -1; - _yFlickSpeed= _xFlickSpeed=0.0f; - _isEvaluatingFlic =NO; - } - return self; -} - --(BOOL)eval:(UIGestureRecognizer *) gesture{ - - BOOL returned = NO; - - UIGestureRecognizerState state = gesture.state; - - if(state == UIGestureRecognizerStateBegan){ - self.isEvaluatingFlic = YES; - - self.startTime = CACurrentMediaTime(); - self.startPoint = [gesture locationInView:_engine.renderer.view]; - - }else if(state == UIGestureRecognizerStateFailed - || state == UIGestureRecognizerStateCancelled){ - self.startTime = -1; - self.isEvaluatingFlic =NO; - - }else{ - - if(state == UIGestureRecognizerStateEnded){ - - CFTimeInterval startTime = self.startTime; - - CGFloat xSpeed = self.xFlickSpeed; - CGFloat ySpeed = self.yFlickSpeed; - - [_engine.currentAnimation cancel]; - - if(startTime > 0){ - - CGPoint t0 =self.startPoint; - - CFTimeInterval deltaT = CACurrentMediaTime() - startTime; - - self.startTime =-1; - - if( (deltaT < MAX_INTERVAL_BETWEEN_EVENTS_THRESHOLD) && - (deltaT > 0) && - (_engine.handledGesturesCount == 0)){ - - CGPoint t1 = [gesture locationInView:_engine.renderer.view]; - - - returned = [self flicXSpeed: [self normalizeSpeed: (t1.x - t0.x) / deltaT - currentSpeed: xSpeed] - ySpeed: [self normalizeSpeed: (t1.y - t0.y) / deltaT - currentSpeed: ySpeed]]; - } - } - - self.isEvaluatingFlic =NO; - } - } - - return returned; - -} - --(BOOL)flicXSpeed:(CGFloat) xSpeedInitial ySpeed:(CGFloat) ySpeedInitial{ - - if((xSpeedInitial !=0) || (ySpeedInitial!=0)) { - - NSLog(@"FLIC: xSpeed=%f ySpeed=%f",xSpeedInitial, ySpeedInitial); - - __block CGFloat xDistanceTotal = 0,yDistanceTotal=0; - - const CGFloat maxSpeedVector = max( abs(xSpeedInitial) , abs(ySpeedInitial) ); - const CGFloat duration =min( maxSpeedVector / DECCELERATION , MAX_DURATION ); - const CGFloat deccelerationRate = maxSpeedVector / duration; - const CGFloat xSign= xSpeedInitial<0? -1: 1; - const CGFloat ySign= ySpeedInitial<0? -1: 1; - - MLOScrollerViewController * scroller = _engine.scroller; - - __block MLOAnimation * copy = nil; - - MLOAnimation * animation = - [[MLOAnimation alloc] - initWithBehavior: CANCELABLE - fractionType: FULL_FRACTION - animation: ^(CGFloat fraction){ - - CGFloat time = fraction * duration; - CGFloat reducedSpeed = deccelerationRate* time; - CGFloat decelerationDistance = reducedSpeed *time / 2.0f; - - CGFloat xDistanceCurrent = xSpeedInitial *time; - CGFloat yDistanceCurrent = ySpeedInitial *time; - CGFloat xSpeedCurrent = 0; - CGFloat ySpeedCurrent = 0; - - if(xSign*xDistanceCurrent > decelerationDistance){ - xDistanceCurrent -= (xSign * decelerationDistance); - xSpeedCurrent = xSpeedInitial - xSign * reducedSpeed; - }else{ - xDistanceCurrent = xDistanceTotal; - } - - if(ySign*yDistanceCurrent > decelerationDistance){ - yDistanceCurrent -= (ySign * decelerationDistance); - ySpeedCurrent = ySpeedInitial - ySign * reducedSpeed; - - }else{ - yDistanceCurrent = yDistanceTotal; - } - - [self setFlicSpeedX:xSpeedCurrent y:ySpeedCurrent context:@"FLIC iteration"]; - - CGFloat deltaX = xDistanceCurrent - xDistanceTotal; - CGFloat deltaY = yDistanceCurrent - yDistanceTotal; - - if([_engine loPanDeltaX:deltaX deltaY:deltaY state:UIGestureRecognizerStateChanged]){ - - [scroller updateByPixelDeltaY:deltaY]; - - xDistanceTotal = xDistanceCurrent; - yDistanceTotal = yDistanceCurrent; - }else{ - [copy cancel]; - } - } ]; - - animation.duration = duration; - animation.fps = FLICK_FPS; - [animation linearCurve]; - - copy = animation; - - animation.endBlock = ^{ - if(![copy isCancelled] || !self.isEvaluatingFlic){ - - [self setFlicSpeedX:0.0f y:0.0f context:@"FLIC end"]; - [_engine endFlick]; - } - }; - [_engine.currentAnimation cancel]; - _engine.currentAnimation = animation; - - [animation animate]; - - return YES; - } - - NSLog(@"FLIC ignored: xSpeed = ySpeed = 0"); - - return NO; - } - --(void) setFlicSpeedX: (CGFloat) xSpeed y:(CGFloat) ySpeed context:(NSString *)context{ - self.xFlickSpeed = xSpeed; - self.yFlickSpeed = ySpeed; - if(LOG_FLICK_FRAMES){ - NSLog(@"FLIC (%@) : set xSpeed = %f, ySpeed = %f",context, xSpeed,ySpeed); - } -} - - -@end |