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‎Classes/AppDelegate.h

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//
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// AppDelegate.h
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// Created by http://github.com/iosdeveloper
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//
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#import <UIKit/UIKit.h>
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@class ViewController;
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@interface AppDelegate : NSObject <UIApplicationDelegate> {
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UIWindow *window;
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ViewController *viewController;
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}
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@property (nonatomic, retain) IBOutlet UIWindow *window;
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@property (nonatomic, retain) IBOutlet ViewController *viewController;
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@end

‎Classes/AppDelegate.m

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//
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// AppDelegate.m
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// Created by http://github.com/iosdeveloper
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//
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#import "AppDelegate.h"
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#import "ViewController.h"
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@implementation AppDelegate
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@synthesize window;
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@synthesize viewController;
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#pragma mark -
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#pragma mark Application lifecycle
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- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
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// Override point for customization after application launch.
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// Set the view controller as the window's root view controller and display.
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self.window.rootViewController = self.viewController;
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[self.window makeKeyAndVisible];
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return YES;
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}
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#pragma mark -
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#pragma mark Memory management
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- (void)dealloc {
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[viewController release];
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[window release];
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[super dealloc];
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}
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@end

‎Classes/ExpandyButton/ExpandyButton.h

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#import <UIKit/UIKit.h>
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@interface ExpandyButton : UIButton {
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@private
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BOOL _expanded;
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UILabel *_titleLabel;
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CGRect _frameExpanded;
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CGRect _frameShrunk;
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CGFloat _buttonWidth;
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NSInteger _selectedItem;
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NSArray *_labels;
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}
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- (id)initWithPoint:(CGPoint)point title:(NSString *)title buttonNames:(NSArray *)buttonNames selectedItem:(NSInteger)selectedItem;
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- (id)initWithPoint:(CGPoint)point title:(NSString *)title buttonNames:(NSArray *)buttonNames;
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@property (nonatomic,readonly,retain) UILabel *titleLabel;
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@property (nonatomic,readonly,retain) NSArray *labels;
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@property (nonatomic,assign) NSInteger selectedItem;
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@end

‎Classes/ExpandyButton/ExpandyButton.m

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/*
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</codex>
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*/
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#import "ExpandyButton.h"
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#import <QuartzCore/QuartzCore.h>
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// Measurements
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static Boolean gInitMeasurements = false;
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static CGFloat gWidth = 47.f;
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static CGFloat gFrameHeight = 32.f;
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static CGFloat gTitleXOrigin = 8.f;
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static CGFloat gTitleYOrigin = 9.f;
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static CGFloat gTitleHeight = 15.f;
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static CGFloat gTitleWidth = 35.f;
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static CGFloat gButtonHeight = 26.f;
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static CGFloat gLabelHeight = 39.f;
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static CGFloat gLabelXOrigin = 45.f;
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static CGFloat gLabelYOrigin = -3.f;
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static CGFloat gDefaultButtonWidth = 44.f;
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static CGFloat gFontSize = 12.f;
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// HUD Appearance
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static CGFloat gLayerWhite = 1.f;
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static CGFloat gLayerAlpha = .2f;
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static CGFloat gBorderWhite = .0f;
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static CGFloat gBorderAlpha = 1.f;
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static CGFloat gBorderWidth = 1.f;
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@interface ExpandyButton ()
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@property (nonatomic,assign) BOOL expanded;
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@property (nonatomic,assign) CGRect frameExpanded;
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@property (nonatomic,assign) CGRect frameShrunk;
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@property (nonatomic,assign) CGFloat buttonWidth;
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@property (nonatomic,retain) UILabel *titleLabel;
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@property (nonatomic,retain) NSArray *labels;
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@end
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@implementation ExpandyButton
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@synthesize expanded = _expanded;
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@synthesize frameExpanded = _frameExpanded;
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@synthesize frameShrunk = _frameShrunk;
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@synthesize buttonWidth = _buttonWidth;
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@synthesize titleLabel = _titleLabel;
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@synthesize labels = _labels;
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@dynamic selectedItem;
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- (id)initWithPoint:(CGPoint)point title:(NSString *)title buttonNames:(NSArray *)buttonNames selectedItem:(NSInteger)selectedItem
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{
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if (!gInitMeasurements) {
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gInitMeasurements = true;
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const Boolean isIPad = ([[UIDevice currentDevice] userInterfaceIdiom] != UIUserInterfaceIdiomPhone);
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if (isIPad) {
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gWidth = 93.f;
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gFrameHeight = 64.f;
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gTitleXOrigin = 16.f;
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gTitleYOrigin = 18.f;
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gTitleHeight = 30.f;
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gTitleWidth = 75.f;
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gButtonHeight = 52.f;
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gLabelHeight = 78.f;
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gLabelXOrigin = 86.f;
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gLabelYOrigin = -6.f;
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gDefaultButtonWidth = 100.f;
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gFontSize = 24.f;
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gBorderWidth = 2.f;
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}
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}
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CGRect frameShrunk = CGRectMake(point.x, point.y, gWidth + gDefaultButtonWidth, gFrameHeight);
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CGRect frameExpanded = CGRectMake(point.x, point.y, gWidth + gDefaultButtonWidth * [buttonNames count], gFrameHeight);
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if ((self = [super initWithFrame:frameShrunk])) {
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[self setFrameShrunk:frameShrunk];
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[self setFrameExpanded:frameExpanded];
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[self setButtonWidth:gDefaultButtonWidth];
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UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(gTitleXOrigin, gTitleYOrigin, gTitleWidth, gTitleHeight)];
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[titleLabel setText:title];
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[titleLabel setFont:[UIFont systemFontOfSize:gFontSize]];
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[titleLabel setTextColor:[UIColor blackColor]];
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[titleLabel setBackgroundColor:[UIColor clearColor]];
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[self addSubview:titleLabel];
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[self setTitleLabel:titleLabel];
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[titleLabel release];
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NSMutableArray *labels = [[NSMutableArray alloc] initWithCapacity:3];
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NSInteger index = 0;
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UILabel *label;
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for (NSString *buttonName in buttonNames) {
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label = [[UILabel alloc] initWithFrame:CGRectMake(gLabelXOrigin + (gDefaultButtonWidth * index), gLabelYOrigin, gDefaultButtonWidth, gButtonHeight)];
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[label setText:buttonName];
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[label setFont:[UIFont systemFontOfSize:gFontSize]];
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[label setTextColor:[UIColor blackColor]];
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[label setBackgroundColor:[UIColor clearColor]];
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[label setTextAlignment:UITextAlignmentCenter];
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[self addSubview:label];
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[labels addObject:label];
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[label release];
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index += 1;
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}
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[self setLabels:labels];
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[labels release];
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[self addTarget:self action:@selector(chooseLabel:forEvent:) forControlEvents:UIControlEventTouchUpInside];
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[self setBackgroundColor:[UIColor clearColor]];
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CALayer *layer = [self layer];
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[layer setBackgroundColor:[[UIColor colorWithWhite:gLayerWhite alpha:gLayerAlpha] CGColor]];
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[layer setBorderWidth:gBorderWidth];
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[layer setBorderColor:[[UIColor colorWithWhite:gBorderWhite alpha:gBorderAlpha] CGColor]];
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[layer setCornerRadius:15.f];
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[self setExpanded:YES];
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[self setHidden:YES];
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[self setSelectedItem:selectedItem];
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}
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return self;
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}
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- (id)initWithPoint:(CGPoint)point title:(NSString *)title buttonNames:(NSArray *)buttonNames
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{
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return [self initWithPoint:point title:title buttonNames:buttonNames selectedItem:0];
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}
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- (void)chooseLabel:(id)sender forEvent:(UIEvent *)event
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{
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[UIView beginAnimations:nil context:NULL];
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if ([self expanded] == NO) {
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[self setExpanded:YES];
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NSInteger index = 0;
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for (UILabel *label in [self labels]) {
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if (index == [self selectedItem]) {
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[label setFont:[UIFont boldSystemFontOfSize:gFontSize]];
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} else {
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[label setTextColor:[UIColor colorWithWhite:0.f alpha:.8f]];
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}
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[label setFrame:CGRectMake(gLabelXOrigin + ([self buttonWidth] * index), gLabelYOrigin, [self buttonWidth], gLabelHeight)];
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index += 1;
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}
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[[self layer] setFrame:[self frameExpanded]];
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} else {
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BOOL inside = NO;
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NSInteger index = 0;
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for (UILabel *label in [self labels]) {
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if ([label pointInside:[[[event allTouches] anyObject] locationInView:label] withEvent:event]) {
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[label setFrame:CGRectMake(gLabelXOrigin, gLabelYOrigin, [self buttonWidth], gLabelHeight)];
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inside = YES;
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break;
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}
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index += 1;
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}
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if (inside) {
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[self setSelectedItem:index];
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}
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}
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[UIView commitAnimations];
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}
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- (NSInteger)selectedItem
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{
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return _selectedItem;
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}
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- (void)setSelectedItem:(NSInteger)selectedItem
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{
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if (selectedItem < [[self labels] count]) {
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CGRect leftShrink = CGRectMake(gLabelXOrigin, gLabelYOrigin, 0.f, gLabelHeight);
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CGRect rightShrink = CGRectMake(gLabelXOrigin + [self buttonWidth], gLabelYOrigin, 0.f, gLabelHeight);
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CGRect middleExpanded = CGRectMake(gLabelXOrigin, gLabelYOrigin, [self buttonWidth], gLabelHeight);
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NSInteger count = 0;
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BOOL expanded = [self expanded];
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if (expanded) {
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[UIView beginAnimations:nil context:NULL];
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}
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for (UILabel *label in [self labels]) {
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if (count < selectedItem) {
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[label setFrame:leftShrink];
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[label setFont:[UIFont systemFontOfSize:gFontSize]];
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} else if (count > selectedItem) {
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[label setFrame:rightShrink];
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[label setFont:[UIFont systemFontOfSize:gFontSize]];
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} else if (count == selectedItem) {
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[label setFrame:middleExpanded];
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[label setFont:[UIFont systemFontOfSize:gFontSize]];
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[label setTextColor:[UIColor blackColor]];
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}
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count += 1;
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}
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if (expanded) {
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[[self layer] setFrame:[self frameShrunk]];
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[UIView commitAnimations];
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[self setExpanded:NO];
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}
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if (_selectedItem != selectedItem) {
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_selectedItem = selectedItem;
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[self sendActionsForControlEvents:UIControlEventValueChanged];
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}
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}
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}
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- (void)dealloc {
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[self setTitleLabel:nil];
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[self setLabels:nil];
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[super dealloc];
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}
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@end

‎Classes/ViewController.h

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//
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// ViewController.h
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// Created by http://github.com/iosdeveloper
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//
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#import <UIKit/UIKit.h>
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#import <AVFoundation/AVFoundation.h>
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@interface ViewController : UIViewController
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@end

‎Classes/ViewController.m

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//
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// ViewController.m
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// Created by http://github.com/iosdeveloper
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//
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#import "ViewController.h"
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#import "ExpandyButton.h"
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@implementation ViewController
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- (void)toggleFlashlight:(id)sender {
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AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
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[device lockForConfiguration:nil];
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[device setTorchMode:[(ExpandyButton *)sender selectedItem]];
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[device unlockForConfiguration];
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}
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// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
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- (void)viewDidLoad {
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[super viewDidLoad];
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[[self view] setBackgroundColor:[UIColor blackColor]];
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AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
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if ([device hasTorch]) {
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ExpandyButton *torchModeButton = [[[ExpandyButton alloc] initWithPoint:CGPointMake(20.0, 20.0)
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title:@"Flash"
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buttonNames:[NSArray arrayWithObjects:@"Off", @"On", @"Auto", nil]
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selectedItem:[device torchMode]] autorelease];
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[torchModeButton addTarget:self action:@selector(toggleFlashlight:) forControlEvents:UIControlEventValueChanged];
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[torchModeButton setHidden:NO];
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[[self view] addSubview:torchModeButton];
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}
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}
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@end

‎ExpandyButton-Info.plist

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleDevelopmentRegion</key>
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<string>English</string>
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<key>CFBundleDisplayName</key>
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<string>${PRODUCT_NAME}</string>
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<key>CFBundleExecutable</key>
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<string>${EXECUTABLE_NAME}</string>
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<key>CFBundleIconFile</key>
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<string></string>
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<key>CFBundleIdentifier</key>
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<string>com.github.iosdeveloper.expandybutton</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>${PRODUCT_NAME}</string>
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<key>CFBundlePackageType</key>
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<string>APPL</string>
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<key>CFBundleSignature</key>
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<string>????</string>
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<key>CFBundleVersion</key>
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<string>1.0</string>
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<key>LSRequiresIPhoneOS</key>
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<true/>
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<key>NSMainNibFile</key>
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<string>MainWindow</string>
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</dict>
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</plist>

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