Class: CATiledLayer

Inherits:
CALayer show all

Overview

CATiledLayer is a subclass of CALayer providing a way to asynchronously provide tiles of the layer's content, potentially cached at multiple levels of detail.

Instance Attribute Summary (collapse)

Attributes inherited from CALayer

#actions, #anchorPoint, #anchorPointZ, #backgroundColor, #backgroundFilters, #borderColor, #borderWidth, #bounds, #compositingFilter, #contents, #contentsCenter, #contentsGravity, #contentsRect, #contentsScale, #cornerRadius, #delegate, #doubleSided, #drawsAsynchronously, #edgeAntialiasingMask, #filters, #frame, #geometryFlipped, #hidden, #magnificationFilter, #mask, #masksToBounds, #minificationFilter, #minificationFilterBias, #name, #needsDisplayOnBoundsChange, #opacity, #opaque, #position, #rasterizationScale, #shadowColor, #shadowOffset, #shadowOpacity, #shadowPath, #shadowRadius, #shouldRasterize, #style, #sublayerTransform, #sublayers, #superlayer, #transform, #visibleRect, #zPosition

Class Method Summary (collapse)

Methods inherited from CALayer

#actionForKey:, #addAnimation:forKey:, #addSublayer:, #affineTransform, #animationForKey:, #animationKeys, #containsPoint:, #contentsAreFlipped, #convertPoint:fromLayer:, #convertPoint:toLayer:, #convertRect:fromLayer:, #convertRect:toLayer:, #convertTime:fromLayer:, #convertTime:toLayer:, defaultActionForKey:, defaultValueForKey:, #display, #displayIfNeeded, #drawInContext:, #hitTest:, #init, #initWithLayer:, #insertSublayer:above:, #insertSublayer:atIndex:, #insertSublayer:below:, layer, #layoutIfNeeded, #layoutSublayers, #modelLayer, #needsDisplay, needsDisplayForKey:, #needsLayout, #preferredFrameSize, #presentationLayer, #removeAllAnimations, #removeAnimationForKey:, #removeFromSuperlayer, #renderInContext:, #replaceSublayer:with:, #scrollPoint:, #scrollRectToVisible:, #setAffineTransform:, #setNeedsDisplay, #setNeedsDisplayInRect:, #setNeedsLayout, #shouldArchiveValueForKey:

Methods inherited from NSObject

#!, #!=, #!~, #, #==, #===, #=~, #Rational, #__callee__, #__method__, #__send__, #__type__, `, alloc, allocWithZone:, #autoContentAccessingProxy, autoload, autoload?, autorelease_pool, #awakeAfterUsingCoder:, binding, block_given?, caller, cancelPreviousPerformRequestsWithTarget:, cancelPreviousPerformRequestsWithTarget:selector:object:, catch, class, classFallbacksForKeyedArchiver, #classForCoder, #classForKeyedArchiver, classForKeyedUnarchiver, #clone, conformsToProtocol:, #copy, copyWithZone:, #dealloc, #define_singleton_method, description, display, #doesNotRecognizeSelector:, #dup, #enum_for, #eql?, #equal?, #extend, fail, #finalize, format, #forwardInvocation:, #forwardingTargetForSelector:, framework, #freeze, #frozen?, getpass, gets, global_variables, #init, initialize, #initialize_clone, #initialize_copy, #initialize_dup, #inspect, instanceMethodForSelector:, instanceMethodSignatureForSelector:, #instance_eval, #instance_exec, #instance_of?, #instance_variable_defined?, #instance_variable_get, #instance_variable_set, #instance_variables, instancesRespondToSelector:, isSubclassOfClass:, #is_a?, iterator?, #kind_of?, lambda, load, load_bridge_support_file, load_plist, local_variables, loop, #method, #methodForSelector:, #methodSignatureForSelector:, #methods, #mutableCopy, mutableCopyWithZone:, new, #nil?, open, p, #performSelector:onThread:withObject:waitUntilDone:, #performSelector:onThread:withObject:waitUntilDone:modes:, #performSelector:withObject:afterDelay:, #performSelector:withObject:afterDelay:inModes:, #performSelectorInBackground:withObject:, #performSelectorOnMainThread:withObject:waitUntilDone:, #performSelectorOnMainThread:withObject:waitUntilDone:modes:, print, printf, #private_methods, proc, #protected_methods, #public_method, #public_methods, #public_send, putc, puts, raise, rand, readline, readlines, #replacementObjectForCoder:, #replacementObjectForKeyedArchiver:, require, resolveClassMethod:, resolveInstanceMethod:, #respond_to?, #respond_to_missing?, select, #send, setVersion:, #singleton_methods, sprintf, srand, superclass, #taint, #tainted?, #tap, test, throw, #to_plist, #to_s, trace_var, trap, #trust, #untaint, untrace_var, #untrust, #untrusted?, version

Constructor Details

This class inherits a constructor from NSObject

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class NSObject

Instance Attribute Details

- (size_t) levelsOfDetail

The number of levels of detail maintained by this layer. Defaults to 1. Each level of detail is half the resolution of the previous level. If too many levels are specified for the current size of the layer, then the number of levels is clamped to the maximum value (the bottom most level of detail must contain at least a single pixel in each dimension.)

Returns:

  • (size_t)

- (size_t) levelsOfDetailBias

The number of magnified levels of detail for this layer. Defaults to 0. Each previous level of detail is twice the resolution of the later. For example, specifying a value of 2 means that the layer has two extra levels of detail: 2x and 4x.

Returns:

  • (size_t)

- (CGSize) tileSize

The maximum size of each tile used to create the layer's content. Defaults to (256.0, 256.0).

Returns:

Class Method Details

+ (CFTimeInterval) fadeDuration

The time, in seconds, that newly added images take to "fade-in" to the rendered representation of the tiled layer. The default implementation returns 0.25 seconds.

Returns:

  • (CFTimeInterval)