UILabel

#import <Foundation/Foundation.h>

#import <CoreGraphics/CoreGraphics.h>

#import <UIKit/UIView.h>

#import <UIKit/UIStringDrawing.h>

#import <UIKit/UIKitDefines.h>

 

@class UIColor, UIFont;

 

UIKIT_CLASS_AVAILABLE(2_0) @interface UILabel : UIView <NSCoding>

{

  @private

    CGSize     _size;

    NSString  *_text;

    UIColor   *_color;

    UIColor   *_highlightedColor;

    UIColor   *_shadowColor;

    UIFont    *_font;

    CGSize     _shadowOffset;

    CGFloat    _minFontSize;

    CGFloat    _actualFontSize;

    NSInteger  _numberOfLines;

    CGFloat    _lastLineBaseline;

    NSInteger  _lineSpacing;

    struct {

        unsigned int lineBreakMode:3;

        unsigned int highlighted:1;

        unsigned int autosizeTextToFit:1;

        unsigned int autotrackTextToFit:1;

        unsigned int baselineAdjustment:2;

        unsigned int alignment:2;

        unsigned int enabled:1;

        unsigned int wordRoundingEnabled:1;

        unsigned int explicitAlignment:1;

        unsigned int marqueeEnabled:1;

        unsigned int marqueeRunable:1;

        unsigned int marqueeRequired:1;

        unsigned int drawsLetterpress:1;

        unsigned int drawsUnderline:1;

    } _textLabelFlags;

}

 

@property(nonatomic,copy)   NSString       *text;            // default is nil

@property(nonatomic,retain) UIFont         *font;            // default is nil (system font 17 plain)

@property(nonatomic,retain) UIColor        *textColor;       // default is nil (text draws black)

@property(nonatomic,retain) UIColor        *shadowColor;     // default is nil (no shadow)

@property(nonatomic)        CGSize          shadowOffset;    // default is CGSizeMake(0, -1) -- a top shadow

@property(nonatomic)        UITextAlignment textAlignment;   // default is UITextAlignmentLeft

@property(nonatomic)        UILineBreakMode lineBreakMode;   // default is UILineBreakModeTailTruncation. used for single and multiple lines of text

 

// the 'highlight' property is used by subclasses for such things as pressed states. it's useful to make it part of the base class as a user property

 

@property(nonatomic,retain)               UIColor *highlightedTextColor; // default is nil

@property(nonatomic,getter=isHighlighted) BOOL     highlighted;          // default is NO

 

@property(nonatomic,getter=isUserInteractionEnabled) BOOL userInteractionEnabled;  // default is NO

@property(nonatomic,getter=isEnabled)                BOOL enabled;                 // default is YES. changes how the label is drawn

 

// this determines the number of lines to draw and what to do when sizeToFit is called. default value is 1 (single line). A value of 0 means no limit

// if the height of the text reaches the # of lines or the height of the view is less than the # of lines allowed, the text will be

// truncated using the line break mode.

 

@property(nonatomic) NSInteger numberOfLines;

 

// these next 3 property allow the label to be autosized to fit a certain width by shrinking the font size to a minimum font size

// and to specify how the text baseline moves when it needs to shrink the font. this only affects single line text (lineCount == 1)

 

@property(nonatomic) BOOL adjustsFontSizeToFitWidth;          // default is NO

@property(nonatomic) CGFloat minimumFontSize;                 // default is 0.0

@property(nonatomic) UIBaselineAdjustment baselineAdjustment; // default is UIBaselineAdjustmentAlignBaselines

 

// override points. can adjust rect before calling super. draw may be called twice to also draw shadow

// label has default content mode of UIViewContentModeRedraw

 

- (CGRect)textRectForBounds:(CGRect)bounds limitedToNumberOfLines:(NSInteger)numberOfLines;

- (void)drawTextInRect:(CGRect)rect;

 

@end