diff options
Diffstat (limited to 'Pods/BlockAlertsAnd-ActionSheets/BlockAlertsDemo/ToAddToYourProjects/BlockBackground.m')
| -rw-r--r-- | Pods/BlockAlertsAnd-ActionSheets/BlockAlertsDemo/ToAddToYourProjects/BlockBackground.m | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/Pods/BlockAlertsAnd-ActionSheets/BlockAlertsDemo/ToAddToYourProjects/BlockBackground.m b/Pods/BlockAlertsAnd-ActionSheets/BlockAlertsDemo/ToAddToYourProjects/BlockBackground.m new file mode 100644 index 0000000..79093cc --- /dev/null +++ b/Pods/BlockAlertsAnd-ActionSheets/BlockAlertsDemo/ToAddToYourProjects/BlockBackground.m @@ -0,0 +1,229 @@ +// +// BlockBackground.m +// arrived +// +// Created by Gustavo Ambrozio on 29/11/11. +// Copyright (c) 2011 N/A. All rights reserved. +// + +#import "BlockBackground.h" + +@implementation BlockBackground + +@synthesize backgroundImage = _backgroundImage; +@synthesize vignetteBackground = _vignetteBackground; + +static BlockBackground *_sharedInstance = nil; + ++ (BlockBackground*)sharedInstance +{ + if (_sharedInstance != nil) { + return _sharedInstance; + } + + @synchronized(self) { + if (_sharedInstance == nil) { + _sharedInstance = [[self alloc] init]; + } + } + + return _sharedInstance; +} + ++ (id)allocWithZone:(NSZone*)zone +{ + @synchronized(self) { + if (_sharedInstance == nil) { + _sharedInstance = [super allocWithZone:zone]; + return _sharedInstance; + } + } + NSAssert(NO, @ "[BlockBackground alloc] explicitly called on singleton class."); + return nil; +} + +- (id)copyWithZone:(NSZone*)zone +{ + return self; +} + +- (id)retain +{ + return self; +} + +- (unsigned)retainCount +{ + return UINT_MAX; +} + +- (oneway void)release +{ +} + +- (id)autorelease +{ + return self; +} + +- (void)setRotation:(NSNotification*)notification +{ + UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation]; + + CGRect orientationFrame = [UIScreen mainScreen].bounds; + + if( + (UIInterfaceOrientationIsLandscape(orientation) && orientationFrame.size.height > orientationFrame.size.width) || + (UIInterfaceOrientationIsPortrait(orientation) && orientationFrame.size.width > orientationFrame.size.height) + ) { + float temp = orientationFrame.size.width; + orientationFrame.size.width = orientationFrame.size.height; + orientationFrame.size.height = temp; + } + + self.transform = CGAffineTransformIdentity; + self.frame = orientationFrame; + + CGFloat posY = orientationFrame.size.height/2; + CGFloat posX = orientationFrame.size.width/2; + + CGPoint newCenter; + CGFloat rotateAngle; + + switch (orientation) { + case UIInterfaceOrientationPortraitUpsideDown: + rotateAngle = M_PI; + newCenter = CGPointMake(posX, orientationFrame.size.height-posY); + break; + case UIInterfaceOrientationLandscapeLeft: + rotateAngle = -M_PI/2.0f; + newCenter = CGPointMake(posY, posX); + break; + case UIInterfaceOrientationLandscapeRight: + rotateAngle = M_PI/2.0f; + newCenter = CGPointMake(orientationFrame.size.height-posY, posX); + break; + default: // UIInterfaceOrientationPortrait + rotateAngle = 0.0; + newCenter = CGPointMake(posX, posY); + break; + } + + self.transform = CGAffineTransformMakeRotation(rotateAngle); + self.center = newCenter; + + [self setNeedsLayout]; + [self layoutSubviews]; +} + +- (id)init +{ + self = [super initWithFrame:[[UIScreen mainScreen] bounds]]; + if (self) { + self.windowLevel = UIWindowLevelStatusBar; + self.hidden = YES; + self.userInteractionEnabled = NO; + self.backgroundColor = [UIColor colorWithWhite:0.4 alpha:0.5f]; + self.vignetteBackground = NO; + + [[NSNotificationCenter defaultCenter] addObserver:self + selector:@selector(setRotation:) + name:UIApplicationDidChangeStatusBarOrientationNotification + object:nil]; + [self setRotation:nil]; + + } + return self; +} + +- (void)addToMainWindow:(UIView *)view +{ + [self setRotation:nil]; + + if ([self.subviews containsObject:view]) return; + + if (self.hidden) + { + _previousKeyWindow = [[[UIApplication sharedApplication] keyWindow] retain]; + self.alpha = 0.0f; + self.hidden = NO; + [self makeKeyWindow]; + } + + // if something's been added to this window, then this window should have interaction + self.userInteractionEnabled = YES; + + if (self.subviews.count > 0) + { + ((UIView*)[self.subviews lastObject]).userInteractionEnabled = NO; + } + + if (_backgroundImage) + { + UIImageView *backgroundView = [[UIImageView alloc] initWithImage:_backgroundImage]; + backgroundView.frame = self.bounds; + backgroundView.contentMode = UIViewContentModeScaleToFill; + [self addSubview:backgroundView]; + [backgroundView release]; + [_backgroundImage release]; + _backgroundImage = nil; + } + + [self addSubview:view]; +} + +- (void)reduceAlphaIfEmpty +{ + if (self.subviews.count == 1 || (self.subviews.count == 2 && [[self.subviews objectAtIndex:0] isKindOfClass:[UIImageView class]])) + { + self.alpha = 0.0f; + self.userInteractionEnabled = NO; + } +} + +- (void)removeView:(UIView *)view +{ + [view removeFromSuperview]; + + UIView *topView = [self.subviews lastObject]; + if ([topView isKindOfClass:[UIImageView class]]) + { + // It's a background. Remove it too + [topView removeFromSuperview]; + } + + if (self.subviews.count == 0) + { + self.hidden = YES; + [_previousKeyWindow makeKeyWindow]; + [_previousKeyWindow release]; + _previousKeyWindow = nil; + } + else + { + ((UIView*)[self.subviews lastObject]).userInteractionEnabled = YES; + } +} + +- (void)drawRect:(CGRect)rect +{ + if (_backgroundImage || !_vignetteBackground) return; + CGContextRef context = UIGraphicsGetCurrentContext(); + + size_t locationsCount = 2; + CGFloat locations[2] = {0.0f, 1.0f}; + CGFloat colors[8] = {0.0f,0.0f,0.0f,0.0f,0.0f,0.0f,0.0f,0.75f}; + CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); + CGGradientRef gradient = CGGradientCreateWithColorComponents(colorSpace, colors, locations, locationsCount); + CGColorSpaceRelease(colorSpace); + + CGPoint center = CGPointMake(self.bounds.size.width/2, self.bounds.size.height/2); + float radius = MIN(self.bounds.size.width , self.bounds.size.height) ; + CGContextDrawRadialGradient (context, gradient, center, 0, center, radius, kCGGradientDrawsAfterEndLocation); + CGGradientRelease(gradient); +} + + + + +@end |