Dalmazio dbrisinda

1. The Layer Tree

Core Animation's original name is Layer Kit

Core Animation is a compositing engine; its job is to compose different pieces of visual content on the screen, and to do so as fast as possible. The content in question is divided into individual layers stored in a hierarchy known as the layer tree. This tree forms the underpinning for all of UIKit, and for everything that you see on the screen in an iOS application.

In UIView, tasks such as rendering, layout and animation are all managed by a Core Animation class called CALayer. The only major feature of UIView that isn’t handled by CALayer is user interaction.

There are four hierarchies, each performing a different role:

	#import <Foundation/Foundation.h>

	@interface NSString (UUID)

	+ (NSString*)stringWithUUID;

	@end

	//
	// NSSharingServicePicker+ESSSharingServicePickerMenu.h
	//
	// Created by Matthias Gansrigler on 22.11.12.
	// Copyright (c) 2012 Eternal Storms Software. All rights reserved.
	//

	#import <Cocoa/Cocoa.h>

	@interface NSSharingServicePicker (ESSSharingServicePickerMenu)

	#!/usr/bin/env bash
	set -e

	convert_to_alac() {
	flac="$1"
	aiff="${flac%.*}.aiff"
	alac="${flac%.*}.m4a"

	flac -s -d --force-aiff-format -o "$aiff" "$flac"
	afconvert -f m4af -d alac "$aiff" "$alac"

	ACTION
	AD_HOC_CODE_SIGNING_ALLOWED
	ALTERNATE_GROUP
	ALTERNATE_MODE
	ALTERNATE_OWNER
	ALWAYS_SEARCH_USER_PATHS
	ALWAYS_USE_SEPARATE_HEADERMAPS
	APPLE_INTERNAL_DEVELOPER_DIR
	APPLE_INTERNAL_DIR
	APPLE_INTERNAL_DOCUMENTATION_DIR