Supports the Label of the glow effect and the Label of the glow effect.

Supports the Label of the glow effect and the Label of the glow effect.

Supports the Label of the glow effect.

 

Effect

 

Source code

FBGlowLabel in a https://github.com/YouXianMing/UI-Component-Collection

//// FBGlowLabel. h /// Created by YouXianMing on 16/8/3. // Copyright©2016 YouXianMing. all rights reserved. //// https://github.com/lyokato/fbglowlabel//#import <UIKit/UIKit. h> @ interface FBGlowLabel: UILabel/*** Glow size, default is 0. f. */@ property (nonatomic) CGFloat glowSize;/*** Glow color, default is clear color. */@ property (nonatomic, strong) UIColor * glowColor;/*** Inner glow size, default is 0. f. */@ property (nonatomic) CGFloat innerGlowSize;/*** Inner glow color, default is clear color. * // @ property (nonatomic, strong) UIColor * innerGlowColor; @ end

//// FBGlowLabel. m /// Created by YouXianMing on 16/8/3. // Copyright©2016 YouXianMing. all rights reserved. // # import "FBGlowLabel. h "@ implementation FBGlowLabel-(id) initWithFrame :( CGRect) frame {if (self = [super initWithFrame: frame]) {[self setup];} return self ;} -(id) initWithCoder :( NSCoder *) coder {if (self = [super initWithCoder: coder]) {[self setup];} return self;}-(void) setup {self. glowSize = 0.0f; self. glowColor = [UIColor clearColor]; self. innerGlowSi Ze = 0.0f; self. innerGlowColor = [UIColor clearColor];}-(void) drawTextInRectForIOS7 :( CGRect) rect {CGContextRef ctx = UIGraphicsGetCurrentContext (); reset (rect. size, NO, 0.0); [super drawTextInRect: rect]; UIImage * textImage = upper (); UIGraphicsEndImageContext (); CGContextSaveGState (ctx); if (_ glowSize> 0) {CGContextSetShadow (Ctx, CGSizeZero, _ glowSize); CGContextSetShadowWithColor (ctx, CGSizeZero, _ glowSize, _ glowColor. CGColor);} [textImage drawAtPoint: rect. origin]; CGContextRestoreGState (ctx); if (_ innerGlowSize> 0) {uigraphicsbeginimagecontextwitexceptions (rect. size, NO, 0.0); CGContextRef ctx2 = UIGraphicsGetCurrentContext (); CGContextSaveGState (ctx2); CGContextSetFillColorWithColor (ctx2, [UIColor blackColor]. CGCo Lor); CGContextFillRect (ctx2, rect); CGContextTranslateCTM (ctx2, 0.0, rect. size. height); CGContextScaleCTM (ctx2, 1.0,-1.0); CGContextClipToMask (ctx2, rect, textImage. CGImage); CGContextClearRect (ctx2, rect); CGContextRestoreGState (ctx2); UIImage * inverted = reverse (); CGContextClearRect (ctx2, rect); reverse (ctx2); reverse (ctx2, _ InnerGlowColor. CGColor); CGContextSetShadowWithColor (ctx2, CGSizeZero, _ innerGlowSize, _ innerGlowColor. CGColor); [inverted drawAtPoint: CGPointZero]; CGContextTranslateCTM (ctx2, 0.0, rect. size. height); CGContextScaleCTM (ctx2, 1.0,-1.0); CGContextClipToMask (ctx2, rect, inverted. CGImage); CGContextClearRect (ctx2, rect); CGContextRestoreGState (ctx2); UIImage * innerShadow = UIGraphicsGetImageFromCurr EntImageContext (); UIGraphicsEndImageContext (); [innerShadow drawAtPoint: rect. origin] ;}}- (void) drawTextInRectForIOS6 :( CGRect) rect {CGContextRef ctx = UIGraphicsGetCurrentContext (); CGContextSaveGState (ctx); if (self. glowSize> 0) {CGContextSetShadow (ctx, CGSizeZero, _ glowSize); CGContextSetShadowWithColor (ctx, CGSizeZero, _ glowSize, _ glowColor. CGColor);} [super drawTextInRect: rect]; CGContext RestoreGState (ctx); if (_ innerGlowSize> 0) {uigraphicsbeginimagecontextwitexceptions (rect. size, NO, 0.0); CGContextRef ctx2 = UIGraphicsGetCurrentContext (); [super drawTextInRect: rect]; UIImage * textImage = histogram (); CGContextClearRect (ctx2, rect ); CGContextSaveGState (ctx2); CGContextSetFillColorWithColor (ctx2, [UIColor blackColor]. CGColor); CGContextFillRect (ctx 2, rect); CGContextTranslateCTM (ctx2, 0.0, rect. size. height); CGContextScaleCTM (ctx2, 1.0,-1.0); CGContextClipToMask (ctx2, rect, textImage. CGImage); CGContextClearRect (ctx2, rect); CGContextRestoreGState (ctx2); UIImage * inverted = reverse (); CGContextClearRect (ctx2, rect); reverse (ctx2); reverse (ctx2, _ innerGlowColor. CGColor); C GContextSetShadowWithColor (ctx2, CGSizeZero, _ innerGlowSize, _ innerGlowColor. CGColor); [inverted drawAtPoint: CGPointZero]; CGContextTranslateCTM (ctx2, 0.0, rect. size. height); CGContextScaleCTM (ctx2, 1.0,-1.0); CGContextClipToMask (ctx2, rect, inverted. CGImage); CGContextClearRect (ctx2, rect); CGContextRestoreGState (ctx2); UIImage * innerShadow = UIGraphicsGetImageFromCurrentImageContext (); UIGraphi CsEndImageContext (); [innerShadow drawAtPoint: rect. origin] ;}}-(void) drawTextInRect :( CGRect) rect {if (self. text = nil | self. text. length = 0) {return;} if ([[[UIDevice currentDevice] systemVersion] compare: @ "7.0" options: NSNumericSearch]! = NSOrderedAscending) {[self drawTextInRectForIOS7: rect];} else {[self drawTextInRectForIOS6: rect];} @ end

/// ViewController. m // FBGlowLabel /// Created by YouXianMing on 16/8/3. // Copyright©2016 YouXianMing. all rights reserved. // # import "ViewController. h "# import" FBGlowLabel. h "@ interface ViewController () @ end @ implementation ViewController-(void) viewDidLoad {[super viewDidLoad]; self. view. backgroundColor = [UIColor blackColor]; FBGlowLabel * glowLabel = [[FBGlowLabel alloc] initWithFrame: self. view. bounds]; [self. view addSubview: glowLabel]; glowLabel. text = @ ""; glowLabel. textAlignment = NSTextAlignmentCenter; glowLabel. backgroundColor = [UIColor clearColor]; glowLabel. font = [UIFont fontWithName: @ "Heiti SC" size: 40.f]; glowLabel. textColor = [[UIColor cyanColor] colorWithAlphaComponent: 0.95f]; glowLabel. glowSize = 6; glowLabel. glowColor = [UIColor cyanColor]; glowLabel. innerGlowSize = 3; glowLabel. innerGlowColor = [[UIColor blackColor] colorWithAlphaComponent: 0.25f];} @ end