BlockBackground Class Reference

Inheritance diagram for BlockBackground:

Collaboration diagram for BlockBackground:

Instance Methods
(void)	- addToMainWindow:
(void)	- reduceAlphaIfEmpty
(void)	- removeView:

Class Methods
(BlockBackground *)	+ sharedInstance

Properties
UIImage *	backgroundImage
BOOL	vignetteBackground

Detailed Description

Definition at line 11 of file BlockBackground.h.

Method Documentation

addToMainWindow:

- (void) addToMainWindow:

(UIView *)

view

Definition at line 16 of file BlockBackground.m.

                       :(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.userInteractionEnabled = YES;
    [self makeKeyWindow];
  }
 
  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];
}

reduceAlphaIfEmpty

- (void) reduceAlphaIfEmpty

Definition at line 16 of file BlockBackground.m.

{
  if (self.subviews.count == 1 ||
      (self.subviews.count == 2 &&
       [[self.subviews objectAtIndex:0] isKindOfClass:[UIImageView class]]))
  {
    self.alpha = 0.0f;
    self.userInteractionEnabled = NO;
  }
}

removeView:

- (void) removeView:

(UIView *)

view

Definition at line 16 of file BlockBackground.m.

                  :(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;
  }
}

sharedInstance

+ (BlockBackground *) sharedInstance

Definition at line 16 of file BlockBackground.m.

{
  if (_sharedInstance != nil)
  {
    return _sharedInstance;
  }
 
  @synchronized(self)
  {
    if (_sharedInstance == nil)
    {
      [[[self alloc] init] autorelease];
    }
  }
 
  return _sharedInstance;
}

Property Documentation

backgroundImage

- (UIImage*) backgroundImage

readwritenonatomicretain

Definition at line 23 of file BlockBackground.h.

vignetteBackground

- (BOOL) vignetteBackground

readwritenonatomicassign

Definition at line 24 of file BlockBackground.h.

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The documentation for this class was generated from the following files:

• BlockBackground.h
• BlockBackground.m