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URBAlertView.m
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//
// URBAlertView.m
// URBFlipModalViewControllerDemo
//
// Created by Nicholas Shipes on 12/21/12.
// Copyright (c) 2012 Urban10 Interactive. All rights reserved.
//
#import "URBAlertView.h"
#import <QuartzCore/QuartzCore.h>
#import <Accelerate/Accelerate.h>
enum {
URBAlertViewDefaultButtonType = 0,
URBAlertViewCancelButtonType
};
typedef NSUInteger URBAlertViewButtonType;
@interface UIDevice (OSVersion)
- (BOOL)iOSVersionIsAtLeast:(NSString *)version;
@end
@interface UIView (Screenshot)
- (UIImage*)screenshot;
@end
@interface UIImage (Blur)
-(UIImage *)boxblurImageWithBlur:(CGFloat)blur;
@end
@interface UIColor (URBAlertView)
- (UIColor *)adjustBrightness:(CGFloat)amount;
@end
@interface URBAlertWindowOverlay : UIView
@property (nonatomic, strong) URBAlertView *alertView;
@end
@interface URBAlertViewButton : UIButton
@property (nonatomic, strong) UIColor *backgroundColor;
@property (nonatomic, strong) UIColor *strokeColor;
@property (nonatomic, assign) CGFloat strokeWidth;
@property (nonatomic, strong) UIFont *textFont;
@property (nonatomic, strong) UIColor *textColor;
@property (nonatomic, strong) UIColor *textShadowColor;
@property (nonatomic, assign) URBAlertViewButtonType buttonStyle;
@end
@interface URBAlertViewTextField : UITextField
@end
typedef void (^URBAnimationBlock)();
@interface URBAlertView ()
@property (nonatomic, strong) UIImageView *backgroundView;
@property (nonatomic, strong) URBAlertViewButton *cancelButton;
@property (nonatomic, strong) NSMutableArray *buttons;
@property (nonatomic, strong) NSMutableArray *textFields;
@property (nonatomic, weak, readwrite) UITextField *focusedTextField;
@property (nonatomic, strong) URBAlertWindowOverlay *overlay;
@property (nonatomic, assign) URBAlertAnimation animationType;
@property (nonatomic, strong) URBAlertViewBlock block;
@property (nonatomic, strong) UIView *blurredBackgroundView;
@property (nonatomic, strong) UIWindow *window;
@property (nonatomic, strong) UIColor *backgroundTopColor;
@property (nonatomic, strong) UIColor *backgroundBottomColor;
@property (nonatomic, strong) UIColor *lightKeylineColor;
@property (nonatomic, strong) UIColor *darkKeylineColor;
@property (nonatomic, strong) UIColor *hatchLineColor;
- (void)initialize;
- (CGRect)defaultFrame;
- (void)animateWithType:(URBAlertAnimation)animation show:(BOOL)show completionBlock:(void(^)())completion;
- (void)showOverlay:(BOOL)show;
- (void)buttonTapped:(id)button;
- (void)updateBackgroundGradient;
- (UIView *)blurredBackground;
- (UIImage *)defaultBackgroundImage;
- (void)layoutComponents;
- (void)setTextAttributes:(NSDictionary *)textAttributes forLabel:(UILabel *)label;
- (URBAlertViewButton *)buttonAtIndex:(NSInteger)buttonIndex;
- (void)cleanup;
- (void)alertViewDidShow;
@end
#define kURBAlertBackgroundRadius 10.0
#define kURBAlertFrameInset 7.0
#define kURBAlertPadding 8.0
#define kURBAlertButtonPadding 6.0
#define kURBAlertButtonHeight 44.0
#define kURBAlertButtonOffset 58.0
#define kURBAlertTextFieldHeight 29.0
static CGSize const kURBAlertViewDefaultSize = {280.0, 180.0};
@implementation URBAlertView {
UIInterfaceOrientation _currentOrientation;
CGFloat _keyboardHeight;
BOOL _hasLaidOut;
@private
struct {
CGRect titleRect;
CGRect messageRect;
CGRect buttonRect;
CGRect buttonRegionRect;
CGRect textFieldsRect;
} layout;
}
#pragma mark - Class methods
+ (URBAlertView *)dialogWithTitle:(NSString *)title message:(NSString *)message {
return [[URBAlertView alloc] initWithTitle:title message:message];
}
#pragma mark - init
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:[self defaultFrame]];
if (self) {
[self initialize];
}
return self;
}
- (id)initWithTitle:(NSString *)title message:(NSString *)message {
self = [self initWithFrame:CGRectZero];
if (self) {
self.title = title;
self.message = message;
}
return self;
}
- (id)initWithTitle:(NSString *)title
message:(NSString *)message
cancelButtonTitle:(NSString *)cancelButtonTitle
otherButtonTitles:(NSString *)otherButtonTitles, ...
{
self = [self initWithTitle:title message:message];
if (self) {
if (cancelButtonTitle) {
NSUInteger cancelButtonIndex = [self addButtonWithTitle:cancelButtonTitle];
URBAlertViewButton *cancelButton = [self buttonAtIndex:cancelButtonIndex];
cancelButton.buttonStyle = URBAlertViewCancelButtonType;
self.cancelButton = cancelButton;
}
if (otherButtonTitles) {
va_list otherTitles;
va_start(otherTitles, otherButtonTitles);
for (NSString *otherTitle = otherButtonTitles; otherTitle; otherTitle = (va_arg(otherTitles, NSString *))) {
[self addButtonWithTitle:otherTitle];
}
va_end(otherTitles);
}
}
return self;
}
- (void)initialize {
_backgroundColor = [UIColor colorWithWhite:0.22 alpha:1.0];
_backgroundGradation = 0.1;
_strokeColor = [UIColor colorWithWhite:0.8 alpha:1.000];
_strokeWidth = 3.0;
_cornerRadius = 6.0;
_titleFont = [UIFont boldSystemFontOfSize:18.0];
_titleColor = [UIColor whiteColor];
_titleShadowColor = [UIColor blackColor];
_titleShadowOffset = CGSizeMake(0.0, -1.0);
_messageFont = [UIFont systemFontOfSize:14.0];
_messageColor = [UIColor whiteColor];
_messageShadowColor = [UIColor blackColor];
_messageShadowOffset = CGSizeMake(0.0, -1.0);
_buttonBackgroundColor = [UIColor colorWithWhite:0.35 alpha:1.0];
[self updateBackgroundGradient];
self.animationType = URBAlertAnimationDefault;
self.buttons = [NSMutableArray array];
self.textFields = [NSMutableArray array];
self.opaque = NO;
self.alpha = 1.0;
self.darkenBackground = YES;
self.blurBackground = NO;
_hasLaidOut = NO;
// register for device orientation changes
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceOrientationChanged:) name:UIDeviceOrientationDidChangeNotification object:nil];
// register for keyboard notifications
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
// register with the device that we want to know when the device orientation changes
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[self build];
}
- (void)setHandlerBlock:(URBAlertViewBlock)block {
self.block = block;
}
- (void)setTitleFont:(UIFont *)titleFont {
if (titleFont != _titleFont) {
_titleFont = titleFont;
}
}
- (void)setMessageFont:(UIFont *)messageFont {
if (messageFont != _messageFont) {
_messageFont = messageFont;
}
}
- (void)setTitleTextAttributes:(NSDictionary *)textAttributes {
UIFont *font = [textAttributes objectForKey:UITextAttributeFont];
UIColor *textColor = [textAttributes objectForKey:UITextAttributeTextColor];
UIColor *textShadowColor = [textAttributes objectForKey:UITextAttributeTextShadowColor];
NSValue *shadowOffsetValue = [textAttributes objectForKey:UITextAttributeTextShadowOffset];
if (font) {
self.titleFont = font;
}
if (textColor) {
self.titleColor = textColor;
}
if (textShadowColor) {
self.titleShadowColor = textShadowColor;
}
if (shadowOffsetValue) {
UIOffset shadowOffset = [shadowOffsetValue UIOffsetValue];
self.titleShadowOffset = CGSizeMake(shadowOffset.horizontal, shadowOffset.vertical);
}
}
- (void)setMessageTextAttributes:(NSDictionary *)textAttributes {
UIFont *font = [textAttributes objectForKey:UITextAttributeFont];
UIColor *textColor = [textAttributes objectForKey:UITextAttributeTextColor];
UIColor *textShadowColor = [textAttributes objectForKey:UITextAttributeTextShadowColor];
NSValue *shadowOffsetValue = [textAttributes objectForKey:UITextAttributeTextShadowOffset];
if (font) {
self.messageFont = font;
}
if (textColor) {
self.messageColor = textColor;
}
if (textShadowColor) {
self.messageShadowColor = textShadowColor;
}
if (shadowOffsetValue) {
UIOffset shadowOffset = [shadowOffsetValue UIOffsetValue];
self.messageShadowOffset = CGSizeMake(shadowOffset.horizontal, shadowOffset.vertical);
}
}
- (void)setTextFieldTextAttributes:(NSDictionary *)textAttributes {
[self.textFields enumerateObjectsUsingBlock:^(URBAlertViewTextField *field, NSUInteger idx, BOOL *stop) {
[self setTextAttributes:textAttributes forLabel:(UILabel *)field];
}];
}
- (void)setButtonTextAttributes:(NSDictionary *)textAttributes forState:(UIControlState)state {
UIFont *font = [textAttributes objectForKey:UITextAttributeFont];
UIColor *textColor = [textAttributes objectForKey:UITextAttributeTextColor];
UIColor *textShadowColor = [textAttributes objectForKey:UITextAttributeTextShadowColor];
NSValue *shadowOffsetValue = [textAttributes objectForKey:UITextAttributeTextShadowOffset];
[self.buttons enumerateObjectsUsingBlock:^(URBAlertViewButton *button, NSUInteger idx, BOOL *stop) {
if (font) {
button.titleLabel.font = font;
}
if (textColor) {
[button setTitleColor:textColor forState:state];
}
if (textShadowColor) {
[button setTitleShadowColor:textShadowColor forState:state];
}
if (shadowOffsetValue) {
UIOffset shadowOffset = [shadowOffsetValue UIOffsetValue];
button.titleLabel.shadowOffset = CGSizeMake(shadowOffset.horizontal, shadowOffset.vertical);
}
}];
}
- (void)setCancelButtonTextAttributes:(NSDictionary *)textAttributes forState:(UIControlState)state {
if (self.cancelButton) {
UIFont *font = [textAttributes objectForKey:UITextAttributeFont];
UIColor *textColor = [textAttributes objectForKey:UITextAttributeTextColor];
UIColor *textShadowColor = [textAttributes objectForKey:UITextAttributeTextShadowColor];
NSValue *shadowOffsetValue = [textAttributes objectForKey:UITextAttributeTextShadowOffset];
if (font) {
self.cancelButton.titleLabel.font = font;
}
if (textColor) {
[self.cancelButton setTitleColor:textColor forState:state];
}
if (textShadowColor) {
[self.cancelButton setTitleShadowColor:textShadowColor forState:state];
}
if (shadowOffsetValue) {
UIOffset shadowOffset = [shadowOffsetValue UIOffsetValue];
self.cancelButton.titleLabel.shadowOffset = CGSizeMake(shadowOffset.horizontal, shadowOffset.vertical);
}
}
}
- (void)setTextAttributes:(NSDictionary *)textAttributes forLabel:(UILabel *)label {
UIFont *font = [textAttributes objectForKey:UITextAttributeFont];
UIColor *textColor = [textAttributes objectForKey:UITextAttributeTextColor];
UIColor *textShadowColor = [textAttributes objectForKey:UITextAttributeTextShadowColor];
NSValue *shadowOffsetValue = [textAttributes objectForKey:UITextAttributeTextShadowOffset];
if (font) {
label.font = font;
}
if (textColor) {
label.textColor = textColor;
}
if (textShadowColor) {
label.shadowColor = textShadowColor;
}
if (shadowOffsetValue) {
UIOffset shadowOffset = [shadowOffsetValue UIOffsetValue];
label.shadowOffset = CGSizeMake(shadowOffset.horizontal, shadowOffset.vertical);
}
}
- (void)setBackgroundColor:(UIColor *)backgroundColor {
if (backgroundColor != _backgroundColor) {
_backgroundColor = backgroundColor;
// update other background-dependent colors
[self updateBackgroundGradient];
self.lightKeylineColor = [self.backgroundColor adjustBrightness:1.1];
self.darkKeylineColor = [self.backgroundColor adjustBrightness:0.85];
self.hatchLineColor = [self.backgroundColor adjustBrightness:0.85];
[self setNeedsDisplay];
}
}
- (void)setButtonBackgroundColor:(UIColor *)buttonBackgroundColor {
if (buttonBackgroundColor != _buttonBackgroundColor) {
_buttonBackgroundColor = buttonBackgroundColor;
if (!self.cancelButtonBackgroundColor) {
self.cancelButtonBackgroundColor = buttonBackgroundColor;
}
[self.buttons enumerateObjectsUsingBlock:^(URBAlertViewButton *button, NSUInteger idx, BOOL *stop) {
if (button.buttonStyle == URBAlertViewCancelButtonType) {
button.backgroundColor = self.cancelButtonBackgroundColor;
}
else {
button.backgroundColor = buttonBackgroundColor;
}
}];
}
}
- (void)setButtonStrokeColor:(UIColor *)buttonStrokeColor {
if (buttonStrokeColor != _buttonStrokeColor) {
_buttonStrokeColor = buttonStrokeColor;
[self.buttons enumerateObjectsUsingBlock:^(URBAlertViewButton *button, NSUInteger idx, BOOL *stop) {
button.strokeColor = buttonStrokeColor;
}];
}
}
- (void)setCancelButtonBackgroundColor:(UIColor *)cancelButtonBackgroundColor {
if (cancelButtonBackgroundColor != _cancelButtonBackgroundColor) {
_cancelButtonBackgroundColor = cancelButtonBackgroundColor;
if (self.cancelButton) {
self.cancelButton.backgroundColor = cancelButtonBackgroundColor;
}
}
}
- (void)setBackgroundGradation:(CGFloat)backgroundGradation {
if (backgroundGradation != _backgroundGradation) {
_backgroundGradation = backgroundGradation;
// need to update background with new gradient
[self updateBackgroundGradient];
}
}
- (void)updateBackgroundGradient {
self.backgroundTopColor = (self.backgroundGradation > 0) ? [self.backgroundColor adjustBrightness:(1.0 + self.backgroundGradation)] : self.backgroundColor;
self.backgroundBottomColor = (self.backgroundGradation > 0) ? [self.backgroundColor adjustBrightness:(1.0 - self.backgroundGradation)] : self.backgroundColor;
}
#pragma mark - Buttons and Text Fields
- (NSInteger)addButtonWithTitle:(NSString *)title {
// convert button over to internal button
URBAlertViewButton *button = [[URBAlertViewButton alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width, kURBAlertButtonHeight)];
[button setTitle:title forState:UIControlStateNormal];
[button addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
button.titleLabel.font = [UIFont boldSystemFontOfSize:16.0];
if (self.buttonBackgroundColor) {
button.backgroundColor = self.buttonBackgroundColor;
}
[self.buttons addObject:button];
return [self.buttons indexOfObject:button];
}
- (URBAlertViewButton *)buttonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex >= 0 && buttonIndex < [self.buttons count]) {
return [self.buttons objectAtIndex:buttonIndex];
}
return nil;
}
- (void)addTextFieldWithPlaceholder:(NSString *)placeholder secure:(BOOL)secure {
for (UITextField *field in self.textFields) {
field.returnKeyType = UIReturnKeyNext;
}
URBAlertViewTextField *field = [[URBAlertViewTextField alloc] initWithFrame:CGRectMake(0, 0, 200.0, kURBAlertTextFieldHeight)];
field.returnKeyType = UIReturnKeyDone;
field.placeholder = placeholder;
field.secureTextEntry = secure;
field.font = self.messageFont;
field.textColor = [UIColor blackColor];
field.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
field.keyboardAppearance = UIKeyboardAppearanceAlert;
field.delegate = self;
[self.textFields addObject:field];
}
- (NSString *)textForTextFieldAtIndex:(NSUInteger)index {
return ((UITextField *)[self.textFields objectAtIndex:index]).text;
}
#pragma mark - Animations
- (void)show {
[self animateWithType:self.animationType show:YES completionBlock:nil];
}
- (void)showWithCompletionBlock:(void (^)())completion {
[self animateWithType:self.animationType show:YES completionBlock:completion];
}
- (void)showWithAnimation:(URBAlertAnimation)animation {
self.animationType = animation;
[self animateWithType:self.animationType show:YES completionBlock:nil];
}
- (void)showWithAnimation:(URBAlertAnimation)animation completionBlock:(void (^)())completion {
self.animationType = animation;
[self animateWithType:animation show:YES completionBlock:completion];
}
- (void)hide {
[self animateWithType:self.animationType show:NO completionBlock:nil];
}
- (void)hideWithCompletionBlock:(void (^)())completion {
[self animateWithType:self.animationType show:NO completionBlock:completion];
}
- (void)hideWithAnimation:(URBAlertAnimation)animation {
self.animationType = animation;
[self animateWithType:self.animationType show:NO completionBlock:nil];
}
- (void)hideWithAnimation:(URBAlertAnimation)animation completionBlock:(void (^)())completion {
self.animationType = animation;
[self animateWithType:animation show:NO completionBlock:completion];
}
- (void)animateWithType:(URBAlertAnimation)animation show:(BOOL)show completionBlock:(void (^)())completion {
CGSize screenSize = [UIScreen mainScreen].bounds.size;
CGAffineTransform transform = self.transform;
if (show) {
_currentOrientation = [UIApplication sharedApplication].statusBarOrientation;
transform = [self transformForOrientation:_currentOrientation];
self.transform = transform;
self.layer.transform = CATransform3DMakeAffineTransform(transform);
}
// some animation durations need to be slightly longer on iPad since more distance to travel, so assign a scale factor
CGFloat durationScale = (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) ? 1.2 : 1.0;
// fade animation
if (animation == URBAlertAnimationFade) {
if (show) {
[self showOverlay:YES];
self.alpha = 0.0f;
self.transform = CGAffineTransformScale(transform, 0.95, 0.95);
[UIView animateWithDuration:0.2 animations:^{
self.alpha = 1.0f;
self.transform = transform;
} completion:^(BOOL finished) {
[self alertViewDidShow];
if (completion)
completion();
}];
}
else {
[self showOverlay:NO];
[UIView animateWithDuration:0.2 animations:^{
self.transform = CGAffineTransformScale(transform, 0.95, 0.95);
self.alpha = 0.0f;
} completion:^(BOOL finished) {
self.transform = transform;
[self cleanup];
if (completion)
completion();
}];
}
}
// flip animation
else if (animation == URBAlertAnimationFlipHorizontal || animation == URBAlertAnimationFlipVertical) {
CGFloat xAxis = (animation == URBAlertAnimationFlipVertical) ? 1.0 : 0.0;
CGFloat yAxis = (animation == URBAlertAnimationFlipHorizontal) ? 1.0 : 0.0;
CGFloat firstDurationScale = (animation == URBAlertAnimationFlipHorizontal) ? 1.2 : 1.0;
// define our 3d perspective for the flip effect
self.layer.zPosition = 100;
CATransform3D perspectiveTransform = CATransform3DMakeAffineTransform(transform);
perspectiveTransform.m34 = 1.0 / -500;
if (show) {
[self showOverlay:YES];
// initial starting rotation
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(70.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
self.alpha = 0.0f;
[UIView animateWithDuration:0.2 * firstDurationScale animations:^{ // flip remaining + bounce
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(-25.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
self.alpha = 1.0f;
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.13 animations:^{
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(12.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.1 animations:^{
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(-8.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.1 animations:^{
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(0.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
} completion:^(BOOL finished) {
[self alertViewDidShow];
if (completion)
completion();
}];
}];
}];
}];
}
else {
[self showOverlay:NO];
// initial transform on dismissal is same as ending transform on present
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(0.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
self.alpha = 1.0f;
[UIView animateWithDuration:0.08 animations:^{
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(-10.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.17 * firstDurationScale animations:^{
self.layer.transform = CATransform3DConcat(CATransform3DMakeRotation(70.0 * M_PI / 180.0, xAxis, yAxis, 0.0), perspectiveTransform);
self.alpha = 0.0f;
} completion:^(BOOL finished) {
[self cleanup];
if (completion)
completion();
}];
}];
}
}
// tumble animation
else if (animation == URBAlertAnimationTumble) {
if (show) {
[self showOverlay:YES];
CGAffineTransform rotate = CGAffineTransformRotate(transform, 50.0 * M_PI / 180.0);
CGAffineTransform translate = CGAffineTransformTranslate(transform, 20.0, -screenSize.height / 2.0 - CGRectGetWidth(self.bounds));
self.transform = CGAffineTransformConcat(rotate, translate);
[UIView animateWithDuration:0.4 * durationScale delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{
//self.layer.transform = CATransform3DIdentity;
self.transform = transform;
} completion:^(BOOL finished) {
[self alertViewDidShow];
if (completion)
completion();
}];
}
else {
[self showOverlay:NO];
CGAffineTransform rotate = CGAffineTransformRotate(transform, -50.0 * M_PI / 180.0);
CGAffineTransform translate = CGAffineTransformTranslate(transform, 20.0, screenSize.height / 2.0 + CGRectGetWidth(self.bounds));
[UIView animateWithDuration:0.4 * durationScale delay:0.0 options:UIViewAnimationOptionCurveEaseIn animations:^{
self.transform = CGAffineTransformConcat(rotate, translate);
} completion:^(BOOL finished) {
[self cleanup];
if (completion)
completion();
}];
}
}
// slide animation
else if (animation == URBAlertAnimationSlideLeft || animation == URBAlertAnimationSlideRight) {
if (show) {
[self showOverlay:YES];
CGFloat startX = (animation == URBAlertAnimationSlideLeft) ? screenSize.width / 2.0 + 10.0 : -screenSize.width / 2.0 - 10.0;
CGFloat shiftX = 10.0;
if (animation == URBAlertAnimationSlideLeft)
shiftX *= -1.0;
self.transform = CGAffineTransformTranslate(transform, startX, 0.0);
[UIView animateWithDuration:0.12 * durationScale delay:0.0 options:UIViewAnimationOptionCurveEaseOut animations:^{
self.transform = CGAffineTransformTranslate(transform, shiftX, 0.0);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.18 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
self.transform = transform;
} completion:^(BOOL finished) {
[self alertViewDidShow];
if (completion)
completion();
}];
}];
}
else {
[self showOverlay:NO];
CGFloat finalX = (animation == URBAlertAnimationSlideLeft) ? -screenSize.width / 2.0 - 10.0 : screenSize.width / 2.0 + 10.0;
CGFloat shiftX = 10.0;
if (animation == URBAlertAnimationSlideRight)
shiftX *= 1.0;
[UIView animateWithDuration:0.18 delay:0 options:UIViewAnimationOptionCurveEaseOut animations:^{
self.transform = CGAffineTransformTranslate(transform, shiftX, 0.0);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.12 * durationScale delay:0.0 options:UIViewAnimationOptionCurveEaseIn animations:^{
self.transform = CGAffineTransformTranslate(self.transform, finalX, 0.0);
} completion:^(BOOL finished) {
[self cleanup];
if (completion)
completion();
}];
}];
}
}
// default "pop" animation like UIAlertView
else {
if (show) {
[self showOverlay:YES];
self.alpha = 0.0f;
self.transform = CGAffineTransformScale(transform, 0.7, 0.7);
[UIView animateWithDuration:0.18 animations:^{
self.transform = CGAffineTransformScale(transform, 1.1, 1.1);
self.alpha = 1.0f;
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.13 animations:^{
self.transform = CGAffineTransformScale(transform, 0.9, 0.9);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.1 animations:^{
self.transform = transform;
} completion:^(BOOL finished) {
[self alertViewDidShow];
if (completion)
completion();
}];
}];
}];
}
else {
[self showOverlay:NO];
[UIView animateWithDuration:0.13 animations:^{
self.transform = CGAffineTransformScale(transform, 1.1, 1.1);
} completion:^(BOOL finished) {
[UIView animateWithDuration:0.18 animations:^{
self.transform = CGAffineTransformScale(transform, 0.7, 0.7);
self.alpha = 0.0f;
} completion:^(BOOL finished) {
[self cleanup];
if (completion)
completion();
}];
}];
}
}
}
#pragma mark - Drawing
- (void)build {
//[super layoutSubviews];
if (!self.contentView) {
self.contentView = [[UIView alloc] initWithFrame:CGRectZero];
self.contentView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
[self addSubview:self.contentView];
}
self.layer.shadowColor = [UIColor blackColor].CGColor;
self.layer.shadowOpacity = 0.8;
self.layer.shadowOffset = CGSizeMake(0, 1.0);
self.layer.shadowRadius = 5.0;
}
- (void)layoutSubviews {
[super layoutSubviews];
[self layoutComponents];
// rotation and position based on the new layout
[self reposition];
}
- (void)layoutComponents {
self.layer.transform = CATransform3DIdentity;
self.transform = CGAffineTransformIdentity;
CGRect defaultFrame = [self defaultFrame];
CGFloat layoutFrameInset = kURBAlertFrameInset + kURBAlertPadding;
CGRect layoutFrame = CGRectInset(CGRectMake(0, 0, CGRectGetWidth(defaultFrame), CGRectGetHeight(defaultFrame)), layoutFrameInset, layoutFrameInset);
CGRect textFrame = CGRectInset(layoutFrame, 6.0, 0.0);
CGFloat layoutWidth = CGRectGetWidth(layoutFrame);
self.contentView.frame = layoutFrame;
// title frame
CGFloat titleHeight = 0;
CGFloat minY = CGRectGetMinY(textFrame);
if (self.title.length > 0) {
if ([self.title respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
CGRect titleBounds = [self.title boundingRectWithSize:CGSizeMake(CGRectGetWidth(textFrame), MAXFLOAT)
options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)
attributes:@{NSFontAttributeName:self.titleFont}
context:nil];
titleHeight = titleBounds.size.height;
}
else {
CGSize titleSize = [self.title sizeWithFont:self.titleFont
constrainedToSize:CGSizeMake(CGRectGetWidth(textFrame), MAXFLOAT)
lineBreakMode:NSLineBreakByWordWrapping];
titleHeight = titleSize.height;
}
titleHeight = ceilf(titleHeight);
minY += kURBAlertPadding;
}
layout.titleRect = CGRectMake(CGRectGetMinX(textFrame), minY, CGRectGetWidth(textFrame), titleHeight);
// message frame
CGFloat messageHeight = 0;
minY = CGRectGetMaxY(layout.titleRect);
if (self.message.length > 0) {
if ([self.title respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
CGRect messageBounds = [self.message boundingRectWithSize:CGSizeMake(CGRectGetWidth(textFrame), MAXFLOAT)
options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)
attributes:@{NSFontAttributeName:self.messageFont}
context:nil];
messageHeight = messageBounds.size.height;
}
else {
CGSize messageSize = [self.message sizeWithFont:self.messageFont
constrainedToSize:CGSizeMake(CGRectGetWidth(textFrame), MAXFLOAT)
lineBreakMode:NSLineBreakByWordWrapping];
messageHeight = messageSize.height;
}
messageHeight = ceilf(messageHeight);
minY += kURBAlertPadding;
}
layout.messageRect = CGRectMake(CGRectGetMinX(textFrame), minY, CGRectGetWidth(textFrame), messageHeight);
// text fields frame
CGFloat textFieldsHeight = 0;
NSUInteger totalFields = self.textFields.count;
CGFloat fieldBottomPadding = 0;
minY = CGRectGetMaxY(layout.messageRect);
if (totalFields > 0) {
textFieldsHeight = kURBAlertTextFieldHeight * (CGFloat)totalFields + kURBAlertPadding * (CGFloat)totalFields;
//minY += kURBAlertPadding;
fieldBottomPadding = 5.0;
}
layout.textFieldsRect = CGRectMake(kURBAlertPadding, minY, layoutWidth - kURBAlertPadding * 2, textFieldsHeight);
// reset main frame based on title and message heights and set background frame and image
CGFloat buttonRegionOffsetY = ([self.buttons count] > 2) ? (kURBAlertButtonHeight * [self.buttons count] + kURBAlertButtonPadding * ([self.buttons count] - 1) + 16) : kURBAlertButtonOffset;
self.frame = CGRectMake(0, 0, CGRectGetWidth(defaultFrame), CGRectGetMaxY(layout.textFieldsRect) + kURBAlertPadding + buttonRegionOffsetY + layoutFrameInset + fieldBottomPadding);
self.backgroundView.frame = self.bounds;
CGFloat buttonRegionHeight = buttonRegionOffsetY + self.strokeWidth / 2.0;
layout.buttonRegionRect = CGRectMake(kURBAlertFrameInset, CGRectGetHeight(self.bounds) - buttonRegionHeight - kURBAlertFrameInset,
CGRectGetWidth(self.bounds) - kURBAlertFrameInset * 2.0, buttonRegionOffsetY);
// buttons frame
NSUInteger totalButtons = [self.buttons count];
CGFloat buttonsHeight = 0;
CGFloat buttonRegionPadding = ((kURBAlertButtonOffset - kURBAlertFrameInset) - kURBAlertButtonHeight) / 2.0 - 2.0;
minY = CGRectGetMinY(layout.buttonRegionRect) + buttonRegionPadding;
if (totalButtons > 0) {
buttonsHeight = kURBAlertButtonHeight;
minY += kURBAlertPadding;
}
CGFloat buttonsOffsetY = (totalButtons > 2) ? CGRectGetMinY(layout.buttonRegionRect) + 8.0 : CGRectGetMidY(layout.buttonRegionRect) - kURBAlertButtonHeight / 2.0;
layout.buttonRect = CGRectMake(CGRectGetMinX(layoutFrame), buttonsOffsetY, layoutWidth, buttonsHeight);
// adjust layout frame
layoutFrame.size.height = CGRectGetMaxY(layout.buttonRect);
// layout textfields
NSUInteger fieldCount = self.textFields.count;
if (fieldCount > 0) {
for (int i = 0; i < fieldCount; i++) {
CGFloat yOffset = CGRectGetMinY(layout.textFieldsRect) + (kURBAlertButtonPadding + kURBAlertTextFieldHeight) * (CGFloat)i;
CGRect frame = CGRectIntegral(CGRectMake(CGRectGetMinX(layout.textFieldsRect), yOffset, CGRectGetWidth(layout.textFieldsRect), kURBAlertTextFieldHeight));
UITextField *field = (UITextField *)[self.textFields objectAtIndex:i];
field.frame = frame;
field.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[self.contentView addSubview:field];
}
}
// layout buttons
// if we have more than two buttons, we lay out buttons vertically, otherwise two buttons are placed next to each other horizontally
NSUInteger count = self.buttons.count;
if (count > 0) {
// if we are laying buttons out vertically (more than two buttons) and we have a cancel button, shift array so cancel button will always be
// inserted at the bottom of the button column
if (count > 2 && self.cancelButton != nil) {
if ([self buttonAtIndex:0] == self.cancelButton) {
[self.buttons removeObject:self.cancelButton];
[self.buttons addObject:self.cancelButton];
}
}
CGFloat buttonWidth = (totalButtons > 2) ? CGRectGetWidth(layout.buttonRect) : (CGRectGetWidth(layout.buttonRect) - kURBAlertButtonPadding * ((CGFloat)count - 1.0)) / (CGFloat)count;
for (int i = 0; i < count; i++) {
CGFloat xOffset = CGRectGetMinX(layout.buttonRect);
CGFloat yOffset = CGRectGetMinY(layout.buttonRect);
if (totalButtons > 2) {
yOffset = CGRectGetMinY(layout.buttonRect) + (kURBAlertButtonHeight + kURBAlertButtonPadding) * (CGFloat)i;
}
else {
xOffset = CGRectGetMinX(layout.buttonRect) + (kURBAlertButtonPadding + buttonWidth) * (CGFloat)i;
}
CGRect frame = CGRectIntegral(CGRectMake(xOffset, yOffset, buttonWidth, CGRectGetHeight(layout.buttonRect)));
URBAlertViewButton *button = (URBAlertViewButton *)[self.buttons objectAtIndex:i];
button.frame = frame;
button.autoresizingMask = UIViewAutoresizingFlexibleTopMargin;
[self addSubview:button];
}
}
UIWindow *window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
CGRect dialogFrame = self.frame;
dialogFrame.origin.x = (CGRectGetWidth(window.bounds) - CGRectGetWidth(dialogFrame)) / 2.0;
dialogFrame.origin.y = (CGRectGetHeight(window.bounds) - CGRectGetHeight(dialogFrame)) / 2.0;
self.frame = CGRectIntegral(dialogFrame);
[self reposition];
_hasLaidOut = YES;
}
- (void)drawRect:(CGRect)rect {
CGContextRef context = UIGraphicsGetCurrentContext();
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
// base shape
CGRect activeBounds = rect;
CGRect backgroundBaseRect = CGRectInset(self.bounds, kURBAlertFrameInset, kURBAlertFrameInset);
// colors
UIColor* baseGradientTopColor = self.backgroundTopColor;
UIColor* baseGradientBottomColor = self.backgroundBottomColor;
UIColor* baseStrokeColor = self.strokeColor;
// gradients
NSArray* baseGradientColors = @[(id)baseGradientTopColor.CGColor, (id)baseGradientBottomColor.CGColor];
CGFloat baseGradientLocations[] = {0, 1};
CGGradientRef baseGradient = CGGradientCreateWithColors(colorSpace, (__bridge CFArrayRef)baseGradientColors, baseGradientLocations);
// background
UIBezierPath *backgroundBasePath = [UIBezierPath bezierPathWithRoundedRect:backgroundBaseRect cornerRadius:self.cornerRadius];
CGContextSaveGState(context);
[backgroundBasePath addClip];
CGContextDrawLinearGradient(context, baseGradient,
CGPointMake(CGRectGetMidX(backgroundBaseRect), CGRectGetMinY(backgroundBaseRect)),
CGPointMake(CGRectGetMidX(backgroundBaseRect), CGRectGetMaxY(backgroundBaseRect)),
0);
CGContextRestoreGState(context);
// hatched background behind buttons
CGFloat buttonOffset = CGRectGetHeight(backgroundBaseRect) - CGRectGetHeight(layout.buttonRegionRect); // offset buttonOffset by half point for crisp lines
CGContextSaveGState(context); // save context state before clipping "hatchPath"
CGRect hatchFrame = CGRectMake(CGRectGetMinX(backgroundBaseRect), CGRectGetMinY(backgroundBaseRect) + buttonOffset, CGRectGetWidth(backgroundBaseRect), CGRectGetHeight(layout.buttonRegionRect));
CGContextClipToRect(context, hatchFrame);
CGFloat spacer = 4.0f;
int rows = (activeBounds.size.width + activeBounds.size.height/spacer);
CGFloat padding = 0.0f;
CGMutablePathRef hatchPath = CGPathCreateMutable();
for(int i=1; i<=rows; i++) {
CGPathMoveToPoint(hatchPath, NULL, spacer * i, padding);
CGPathAddLineToPoint(hatchPath, NULL, padding, spacer * i);
}
CGContextAddPath(context, hatchPath);
CGPathRelease(hatchPath);
CGContextSetLineWidth(context, 1.0f);
CGContextSetLineCap(context, kCGLineCapRound);
CGContextSetStrokeColorWithColor(context, self.hatchLineColor.CGColor);
CGContextDrawPath(context, kCGPathStroke);
CGContextRestoreGState(context);
// keylines
CGContextSaveGState(context);
UIBezierPath *keylinePath = [UIBezierPath bezierPath];
[keylinePath moveToPoint:CGPointMake(CGRectGetMinX(backgroundBaseRect), 0)];
[keylinePath addLineToPoint:CGPointMake(CGRectGetMaxX(backgroundBaseRect), 0)];
keylinePath.lineWidth = 1.0;
CGContextTranslateCTM(context, 0, CGRectGetMinY(hatchFrame) - 2.0);
[self.darkKeylineColor setStroke];
[keylinePath stroke];
CGContextTranslateCTM(context, 0, 1.0);
[self.lightKeylineColor setStroke];
[keylinePath stroke];
CGContextRestoreGState(context);
UIBezierPath *backgroundStrokePath = backgroundBasePath;
NSInteger stroke = self.strokeWidth;
if (stroke % 2 > 0) {
backgroundStrokePath = [UIBezierPath bezierPathWithRoundedRect:CGRectInset(backgroundBaseRect, -0.5, -0.5) cornerRadius:self.cornerRadius];
}
[baseStrokeColor setStroke];
backgroundStrokePath.lineWidth = self.strokeWidth;
[backgroundStrokePath stroke];
[self drawText:self.title inRect:layout.titleRect font:self.titleFont color:self.titleColor shadowColor:self.titleShadowColor shadowOffset:self.titleShadowOffset];
[self drawText:self.message inRect:layout.messageRect font:self.messageFont color:self.messageColor shadowColor:self.messageShadowColor shadowOffset:self.messageShadowOffset];
}
- (void)drawText:(NSString *)text inRect:(CGRect)rect font:(UIFont *)font color:(UIColor *)color shadowColor:(UIColor *)shadowColor shadowOffset:(CGSize)shadowOffset {
if (text.length > 0) {
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSaveGState(context);
if (!font) font = [UIFont systemFontOfSize:12.0];
if (!color) color = [UIColor whiteColor];
[color set];
if (shadowColor != nil && !CGSizeEqualToSize(shadowOffset, CGSizeZero)) {
CGContextSetShadowWithColor(context, shadowOffset, 0.0, shadowColor.CGColor);
}
if (floor(NSFoundationVersionNumber) > NSFoundationVersionNumber_iOS_6_1) {
// iOS 7 and later
NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
style.lineBreakMode = NSLineBreakByWordWrapping;
style.alignment = NSTextAlignmentCenter;
NSDictionary *textAttributes = @{NSFontAttributeName: font,
NSForegroundColorAttributeName: color,