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b634a50283
Continue chat stuff Fix viewWillAppear without viewDidLoad called with UICompositeController
132 lines
3.5 KiB
Objective-C
Executable file
132 lines
3.5 KiB
Objective-C
Executable file
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// Created by Yang Meyer on 26.07.11.
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// Copyright 2011-2012 compeople AG. All rights reserved.
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#import "CPAnimationStep.h"
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@interface CPAnimationStep()
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/** A temporary reverse queue of animation steps, i.e. from last to first.
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It is created when the step is run, and is modified during the animation,
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and is destroyed when the animation finishes. */
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@property (nonatomic, strong) NSMutableArray* consumableSteps;
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@end
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@implementation CPAnimationStep
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@synthesize delay, duration, step, options;
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@synthesize consumableSteps;
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#pragma mark overrides
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#pragma mark construction
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+ (id) after:(NSTimeInterval)delay animate:(AnimationStep)step {
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return [self after:delay for:0.0 options:0 animate:step];
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}
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+ (id) for:(NSTimeInterval)duration animate:(AnimationStep)step {
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return [self after:0.0 for:duration options:0 animate:step];
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}
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+ (id) after:(NSTimeInterval)delay for:(NSTimeInterval)duration animate:(AnimationStep)step {
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return [self after:delay for:duration options:0 animate:step];
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}
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+ (id) after:(NSTimeInterval)theDelay
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for:(NSTimeInterval)theDuration
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options:(UIViewAnimationOptions)theOptions
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animate:(AnimationStep)theStep {
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CPAnimationStep* instance = [[self alloc] init];
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if (instance) {
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instance.delay = theDelay;
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instance.duration = theDuration;
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instance.options = theOptions;
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instance.step = theStep;
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}
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return instance;
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}
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- (void)dealloc {
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[step release];
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[super dealloc];
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}
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#pragma mark action
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// From http://stackoverflow.com/questions/4007023/blocks-instead-of-performselectorwithobjectafterdelay
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+ (void) runBlock:(AnimationStep)block afterDelay:(NSTimeInterval)delay {
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, NSEC_PER_SEC*delay), dispatch_get_current_queue(), block);
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}
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- (NSArray*) animationStepArray {
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// subclasses must override this!
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return [NSArray arrayWithObject:self];
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}
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- (void) runAnimated:(BOOL)animated {
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if (!self.consumableSteps) {
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self.consumableSteps = [[NSMutableArray alloc] initWithArray:[self animationStepArray]];
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}
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if (![self.consumableSteps count]) { // recursion anchor
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[self.consumableSteps release];
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self.consumableSteps = nil;
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return; // we're done
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}
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void (^completionStep)(BOOL) = ^(BOOL animated){
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[self.consumableSteps removeLastObject];
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[self runAnimated:animated]; // recurse!
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};
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CPAnimationStep* currentStep = [self.consumableSteps lastObject];
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// Note: do not animate to short steps
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if (animated && currentStep.duration >= 0.02) {
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[UIView animateWithDuration:currentStep.duration
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delay:currentStep.delay
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options:currentStep.options
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animations:currentStep.step
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completion:^(BOOL finished) {
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if (finished) {
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completionStep(TRUE);
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} else {
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completionStep(FALSE);
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}
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}];
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} else {
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void (^execution)(void) = ^{
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currentStep.step();
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completionStep(FALSE);
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};
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if (animated && currentStep.delay) {
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[CPAnimationStep runBlock:execution afterDelay:currentStep.delay];
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} else {
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execution();
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}
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}
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}
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- (void) run {
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[self runAnimated:YES];
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}
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#pragma mark - pretty-print
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- (NSString*) description {
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NSMutableString* result = [[NSMutableString alloc] initWithCapacity:100];
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[result appendString:@"\n["];
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if (self.delay > 0.0) {
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[result appendFormat:@"after:%.1f ", self.delay];
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}
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if (self.duration > 0.0) {
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[result appendFormat:@"for:%.1f ", self.duration];
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}
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if (self.options > 0) {
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[result appendFormat:@"options:%d ", self.options];
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}
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[result appendFormat:@"animate:%@", self.step];
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[result appendString:@"]"];
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return result;
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}
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@end
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