DDExpandableButton is a single-file iOS 3.0+ non-ARC class (ARC compatible) designed to be used like an expandable UIButton ; as seen in the iOS Camera app for the flash button.
Originally inspired by ExpandyButton.
A DDExpandableButton has the following properties:
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@property (nonatomic,assign) BOOL expanded;Current button status (if expanded or shrunk). -
@property (nonatomic,assign) BOOL useAnimation;Use animation during button state transitions. -
@property (nonatomic,assign) BOOL toggleMode;Use button as a toggle (like "HDR On" / "HDR Off" button in camera app). -
@property (nonatomic,assign) CGFloat timeout;To shrink the button after a timeout. Use0if you want to disable timeout. -
@property (nonatomic,assign) CGFloat horizontalPadding;Horizontal padding space between items. -
@property (nonatomic,assign) CGFloat verticalPadding;Vertical padding space above and below items. -
@property (nonatomic,assign) CGFloat borderWidth;Width (thickness) of the button border. -
@property (nonatomic,assign) CGFloat innerBorderWidth;Width (thickness) of the inner borders between items. -
@property (nonatomic,assign) NSUInteger selectedItem;Selected item number. -
@property (nonatomic,retain) UIColor *borderColor;Color of the button and inner borders. -
@property (nonatomic,retain) UIColor *textColor;Color of text labels. -
@property (nonatomic,retain) UIFont *labelFont;Font of text labels. -
@property (nonatomic,retain) UIFont *unSelectedLabelFont;Font of unselected text labels.Nilif not different fromlabelFont. -
@property (nonatomic,readonly) NSArray *labels;AccessUIViewused to draw labels.
A DDExpandableButton has the following methods:
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- (id)initWithPoint:(CGPoint)point leftTitle:(id)leftTitle buttons:(NSArray *)buttons;Init method where you can specifyleftTitleandbuttons. -
- (void)setSelectedItem:(NSUInteger)selected animated:(BOOL)animated;Animated version of- (void)setSelectedItem:(NSUInteger)selected. -
- (void)setExpanded:(BOOL)expanded animated:(BOOL)animated;Animated version of- (void)setExpanded:(BOOL)expanded. -
- (void)setLeftTitle:(id)leftTitle;Set left title view : you can use aNSString, anUIImageor anyUIView(but the view must implementDDExpandableButtonViewSourceprotocol). -
- (void)setButtons:(NSArray *)buttons;Set buttons views : you can use aNSString, anUIImageor anyUIView(but the view must implementDDExpandableButtonViewSourceprotocol). -
- (void)disableTimeout;If you want to disable timeout shrunk. You can settimeoutto0also. -
- (void)updateDisplay;When modifying button parameters, use this method to update button display.
The DDExpandableButtonViewSource protocol, used when you specify the title or the different buttons, has the following methods:
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- (CGSize)defaultFrameSize;Returns default frame size of the view, used when expanding the button. -
- (void)setHighlighted:(BOOL)highlighted;Optional, used to change appearance of selected items.
Example : a button with four text labels and a hook when value change.
NSArray *buttons = [NSArray arrayWithObjects:@"Black", @"Red", @"Green", @"Blue", nil];
DDExpandableButton *colorButton = [[[DDExpandableButton alloc] initWithPoint:CGPointMake(20, 70) leftTitle:@"Color" buttons:buttons] autorelease];
[[self view] addSubview:colorButton];
[colorButton addTarget:self action:@selector(toggleColor:) forControlEvents:UIControlEventValueChanged];
DDExpandableButton is available under the MIT license. See the LICENSE file for more info.