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DPToastView.m
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//
// DPToastView.m
// DPToastViewDemo
//
// Created by Baker, Eric on 2/15/13.
// Copyright (c) 2013 DuneParkSoftware, LLC. All rights reserved.
//
#import <QuartzCore/QuartzCore.h>
#import "DPToastView.h"
static id _DP_PreviousToastView = nil;
@interface DPToastView ()
@property (strong, nonatomic) UIView *toastView;
@property (strong, nonatomic) NSMutableArray *windowConstraints;
@property (assign, nonatomic) BOOL cancelNotifications;
@end
@implementation DPToastView
@synthesize message;
@synthesize textAlignment;
@synthesize lineBreakMode;
@synthesize gravity;
@synthesize duration;
@synthesize textColor, backgroundColor, borderColor, shadowColor;
@synthesize font;
@synthesize borderWidth, cornerRadius, shadowOpacity, shadowRadius, fadeInDuration, fadeOutDuration;
@synthesize shadowOffset;
@synthesize innerEdgeInsets;
@synthesize yOffset;
@synthesize toastView;
@synthesize windowConstraints;
@synthesize cancelNotifications;
+ (id)makeToast:(id)message {
return [[self class] makeToast:message gravity:DPToastGravityBottom duration:DPToastDurationNormal];
}
+ (id)makeToast:(id)message gravity:(DPToastGravity)gravity {
return [[self class] makeToast:message gravity:gravity duration:DPToastDurationNormal];
}
+ (id)makeToast:(id)message duration:(NSTimeInterval)duration {
return [[self class] makeToast:message gravity:DPToastGravityBottom duration:duration];
}
+ (id)makeToast:(id)message gravity:(DPToastGravity)gravity duration:(NSTimeInterval)duration {
return [[[self class] alloc] initWithMessage:message gravity:gravity duration:duration];
}
+ (void)dismissToast {
if (_DP_PreviousToastView) {
[[_DP_PreviousToastView toastView] removeFromSuperview];
[_DP_PreviousToastView setCancelNotifications:YES];
[[NSNotificationCenter defaultCenter] removeObserver:_DP_PreviousToastView];
[[NSNotificationCenter defaultCenter] postNotificationName:DPToastViewDidDismissNotification object:_DP_PreviousToastView userInfo:@{ DPToastViewUserInfoKey : _DP_PreviousToastView, DPToastViewStringUserInfoKey : [_DP_PreviousToastView messageString] }];
_DP_PreviousToastView = nil;
}
}
- (id)initWithMessage:(id)theMessage gravity:(DPToastGravity)theGravity duration:(NSTimeInterval)theDuration {
if ((self = [super init])) {
[self setMessage:theMessage];
[self setTextAlignment:NSTextAlignmentCenter];
[self setLineBreakMode:NSLineBreakByWordWrapping];
[self setGravity:theGravity];
[self setDuration:theDuration];
[self setTextColor:[UIColor whiteColor]];
[self setFont:[UIFont systemFontOfSize:16.0]];
[self setBackgroundColor:[UIColor colorWithRed:0.2 green:0.2 blue:0.2 alpha:0.8]];
[self setBorderColor:[[UIColor whiteColor] colorWithAlphaComponent:0.8]];
[self setBorderWidth:1.5];
[self setCornerRadius:4.0];
[self setShadowColor:[UIColor blackColor]];
[self setShadowOpacity:0.8];
[self setShadowRadius:5.0];
[self setShadowOffset:CGSizeZero];
[self setInnerEdgeInsets:UIEdgeInsetsMake(6, 10, 6, 10)];
[self setYOffset:(theGravity == DPToastGravityCenter ? 0 : 60)];
[self setFadeInDuration:0.15];
[self setFadeOutDuration:0.5];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(toastWasDismissed:) name:DPToastViewDidDismissNotification object:self];
[self setCancelNotifications:NO];
}
return self;
}
- (void)show {
UIWindow *window = [[[UIApplication sharedApplication] windows] objectAtIndex:0];
[self showInView:window];
}
- (void)showInView:(UIView *)view {
if (nil == view) return;
if (nil != _DP_PreviousToastView) {
[DPToastView dismissToast];
[self setFadeInDuration:0.0];
}
[self buildToastViewForView:view];
if (nil == toastView) return;
[[NSNotificationCenter defaultCenter] postNotificationName:DPToastViewWillAppearNotification object:self userInfo:@{ DPToastViewUserInfoKey : self, DPToastViewStringUserInfoKey : [self messageString] }];
[toastView setAlpha:0.0];
_DP_PreviousToastView = self;
[UIView animateWithDuration:[self fadeInDuration]
delay:0
options:UIViewAnimationOptionCurveEaseOut
animations:^{
[toastView setAlpha:1.0];
}
completion:^(BOOL finished) {
if (NO == [self cancelNotifications]) {
[[NSNotificationCenter defaultCenter] postNotificationName:DPToastViewDidAppearNotification object:self userInfo:@{ DPToastViewUserInfoKey : self, DPToastViewStringUserInfoKey : [self messageString] }];
}
if (finished) {
[self performSelector:@selector(postWillDisappearNotification:) withObject:self afterDelay:[self duration]];
[UIView animateWithDuration:[self fadeOutDuration]
delay:[self duration]
options:UIViewAnimationOptionCurveEaseIn
animations:^{
[toastView setAlpha:0.0];
}
completion:^(BOOL finished) {
if (finished) {
if (NO == [self cancelNotifications]) {
[[NSNotificationCenter defaultCenter] postNotificationName:DPToastViewDidDisappearNotification object:self userInfo:@{ DPToastViewUserInfoKey : self, DPToastViewStringUserInfoKey : [self messageString] }];
}
[DPToastView dismissToast];
}
}];
}
}];
}
- (NSString *)messageString {
if ([[self message] isKindOfClass:[NSString class]]) {
return (NSString *)[self message];
} else if ([[self message] isKindOfClass:[NSAttributedString class]]) {
return [(NSAttributedString *)[self message] string];
}
return nil;
}
- (void)toastWasDismissed:(NSNotification *)notification {
[self setCancelNotifications:YES];
}
- (void)postWillDisappearNotification:(id)sender {
if (NO == [self cancelNotifications]) {
[[NSNotificationCenter defaultCenter] postNotificationName:DPToastViewWillDisappearNotification object:self userInfo:@{ DPToastViewUserInfoKey : self, DPToastViewStringUserInfoKey : [self messageString] }];
}
}
- (void)statusBarOrientationChanged:(NSNotification *)notification {
[self defineConstraintsForToastInView:[self.toastView superview]];
}
- (UIView *)buildToastViewForView:(UIView *)parentView {
UILabel *label = nil;
if ([self message]) {
if ([[self message] isKindOfClass:[NSString class]]) {
if ([[(NSString *)message stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length] > 0) {
label = [[UILabel alloc] init];
[label setText:(NSString *)message];
[label setTextColor:[self textColor]];
[label setTextAlignment:[self textAlignment]];
[label setLineBreakMode:[self lineBreakMode]];
[label setFont:[self font]];
}
} else if ([[self message] isKindOfClass:[NSAttributedString class]]) {
if ([[[(NSAttributedString *)message string] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length] > 0) {
label = [[UILabel alloc] init];
[label setAttributedText:(NSAttributedString *)message];
}
}
}
if (nil == label) return nil;
[label setBackgroundColor:[UIColor clearColor]];
[label setNumberOfLines:0];
[label setUserInteractionEnabled:NO];
[self setToastView:[[UIView alloc] init]];
[toastView setBackgroundColor:[self backgroundColor]];
[toastView setUserInteractionEnabled:NO];
[toastView.layer setBorderColor:[[self borderColor] CGColor]];
[toastView.layer setBorderWidth:[self borderWidth]];
[toastView.layer setCornerRadius:[self cornerRadius]];
[toastView.layer setShadowColor:[[self shadowColor] CGColor]];
[toastView.layer setShadowOpacity:[self shadowOpacity]];
[toastView.layer setShadowRadius:[self shadowRadius]];
[toastView.layer setShadowOffset:[self shadowOffset]];
[toastView addSubview:label];
[parentView addSubview:toastView];
[parentView bringSubviewToFront:toastView];
[label setTranslatesAutoresizingMaskIntoConstraints:NO];
[toastView setTranslatesAutoresizingMaskIntoConstraints:NO];
NSNumber *maxWidth = @(floor(parentView.frame.size.width * 0.9) - self.innerEdgeInsets.left - self.innerEdgeInsets.right - (2.0 * self.borderWidth)), *maxHeight;
CGSize size = [label sizeThatFits:CGSizeMake([maxWidth floatValue], 0.0)];
maxWidth = @(size.width);
maxHeight = @(size.height);
[toastView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:[NSString stringWithFormat:@"H:|-==%d-[label(==%@)]-==%d-|", (int)self.innerEdgeInsets.left, maxWidth, (int)self.innerEdgeInsets.right]
options:0
metrics:nil
views:NSDictionaryOfVariableBindings(label)]];
[toastView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:[NSString stringWithFormat:@"V:|-==%d-[label(==%@)]-==%d-|", (int)self.innerEdgeInsets.top, maxHeight, (int)self.innerEdgeInsets.bottom]
options:0
metrics:nil
views:NSDictionaryOfVariableBindings(label)]];
[self defineConstraintsForToastInView:parentView];
return toastView;
}
- (void)defineConstraintsForToastInView:(UIView *)parentView {
if (nil == windowConstraints) {
windowConstraints = [[NSMutableArray alloc] init];
if ([parentView isKindOfClass:[UIWindow class]]) {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(statusBarOrientationChanged:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
}
} else {
[parentView removeConstraints:windowConstraints];
[parentView setNeedsUpdateConstraints];
[windowConstraints removeAllObjects];
}
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if (NO == [parentView isKindOfClass:[UIWindow class]]) {
orientation = UIInterfaceOrientationPortrait;
}
switch (orientation) {
case UIInterfaceOrientationPortrait: {
[toastView setTransform:CGAffineTransformMakeRotation(0)];
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterX
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterX
multiplier:1.0
constant:0.0]];
switch ([self gravity]) {
case DPToastGravityTop: {
CGFloat statusBarHeight = 0;
if ([parentView isKindOfClass:[UIWindow class]]) {
if (NO == [UIApplication sharedApplication].statusBarHidden) {
statusBarHeight = [[UIApplication sharedApplication] statusBarFrame].size.height;
}
}
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeTop
multiplier:1.0
constant:ABS(self.yOffset) + statusBarHeight]];
}
break;
case DPToastGravityCenter: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterY
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterY
multiplier:1.0
constant:self.yOffset]];
}
break;
case DPToastGravityBottom: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeBottom
multiplier:1.0
constant:(ABS(self.yOffset) * -1)]];
}
break;
}
}
break;
case UIInterfaceOrientationLandscapeLeft: {
[toastView setTransform:CGAffineTransformMakeRotation(-M_PI_2)];
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterY
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterY
multiplier:1.0
constant:0.0]];
switch ([self gravity]) {
case DPToastGravityTop: {
CGFloat statusBarHeight = 0;
if ([parentView isKindOfClass:[UIWindow class]]) {
if (NO == [UIApplication sharedApplication].statusBarHidden) {
statusBarHeight = [[UIApplication sharedApplication] statusBarFrame].size.width;
}
}
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeLeft
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeLeft
multiplier:1.0
constant:ABS(self.yOffset) + statusBarHeight]];
}
break;
case DPToastGravityCenter: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterX
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterX
multiplier:1.0
constant:self.yOffset]];
}
break;
case DPToastGravityBottom: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeRight
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeRight
multiplier:1.0
constant:(ABS(self.yOffset) * -1)]];
}
break;
}
}
break;
case UIInterfaceOrientationLandscapeRight: {
[toastView setTransform:CGAffineTransformMakeRotation(M_PI_2)];
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterY
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterY
multiplier:1.0
constant:0.0]];
switch ([self gravity]) {
case DPToastGravityTop: {
CGFloat statusBarHeight = 0;
if ([parentView isKindOfClass:[UIWindow class]]) {
if (NO == [UIApplication sharedApplication].statusBarHidden) {
statusBarHeight = [[UIApplication sharedApplication] statusBarFrame].size.width;
}
}
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeRight
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeRight
multiplier:1.0
constant:-(ABS(self.yOffset) + statusBarHeight)]];
}
break;
case DPToastGravityCenter: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterX
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterX
multiplier:1.0
constant:-self.yOffset]];
}
break;
case DPToastGravityBottom: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeLeft
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeLeft
multiplier:1.0
constant:ABS(self.yOffset)]];
}
break;
}
}
break;
case UIInterfaceOrientationPortraitUpsideDown: {
[toastView setTransform:CGAffineTransformMakeRotation(M_PI)];
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterX
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterX
multiplier:1.0
constant:0.0]];
switch ([self gravity]) {
case DPToastGravityTop: {
CGFloat statusBarHeight = 0;
if ([parentView isKindOfClass:[UIWindow class]]) {
if (NO == [UIApplication sharedApplication].statusBarHidden) {
statusBarHeight = [[UIApplication sharedApplication] statusBarFrame].size.height;
}
}
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeBottom
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeBottom
multiplier:1.0
constant:-(ABS(self.yOffset) + statusBarHeight)]];
}
break;
case DPToastGravityCenter: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeCenterY
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeCenterY
multiplier:1.0
constant:-(self.yOffset)]];
}
break;
case DPToastGravityBottom: {
[windowConstraints addObject:[NSLayoutConstraint constraintWithItem:toastView
attribute:NSLayoutAttributeTop
relatedBy:NSLayoutRelationEqual
toItem:parentView
attribute:NSLayoutAttributeTop
multiplier:1.0
constant:ABS(self.yOffset)]];
}
break;
}
}
break;
}
[parentView addConstraints:windowConstraints];
}
@end