NSAttributedString

1.  XCode 4.0  이후 , iPhone SDK 에 추가됨
2. 현재, NSAttributedString 은 사용가능하나, 받아주는 UI모듈이 없음

3. TODO :  현재  shadow 관련부분 수정 필요.
   

    

1. - (void)drawRect:(CGRect)rect

2. {

3. // Drawing code

4.     [super drawRect:rect];

5.  

6.     if(self.attrText.length == 0) return;

7.  

8. CGContextRef context = UIGraphicsGetCurrentContext();

9. CGContextClearRect(context, rect);

10.  

11. [self.backgroundColorset];

12.     CGContextFillRect(context, rect);

13.  

14. CGFloat width = CGRectGetWidth(self.bounds) - kJTextViewPaddingSize * 2;

15. CGSize textSize = [[self.attrTextstring] sizeWithFont:[UIFontfontWithName:@"Helvetica"size:12]

16.                                             constrainedToSize:CGSizeMake(width, UINT_MAX)

17.                                             lineBreakMode:UILineBreakModeWordWrap];

18.  

19.  

20.  

21.  

22. CGContextTranslateCTM(context, 0, textSize.height);

23. CGContextScaleCTM(context, 1.0, -1.0);

24. CGContextSetTextMatrix(context, CGAffineTransformMakeScale(1.0, 1.0));

25.  

26. UIBezierPath* path = [UIBezierPathbezierPathWithRect:CGRectMake(kJTextViewPaddingSize, -(kJTextViewPaddingSize), width, textSize.height)];

27.  

28. //줄간격 3px

29.     float lineSpacing = 3;

30.     float lineHieght = 12;

31.  

32. NSRange range = NSMakeRange(0, self.attrText.length);

33. CTLineBreakMode lineBreakeMode = kCTLineBreakByWordWrapping;

34.     CFIndex theNumberOfSettings = 3;

35. CTParagraphStyleSetting theSettings[3] =

36.     {

37.         {kCTParagraphStyleSpecifierMaximumLineHeight, sizeof(lineHieght), &lineHieght},

38.         {kCTParagraphStyleSpecifierLineSpacing, sizeof(lineSpacing), &lineSpacing},

39.         {kCTParagraphStyleSpecifierLineBreakMode, sizeof(lineBreakeMode), &lineBreakeMode}

40.     };

41.     CTParagraphStyleRef theParagraphRef = CTParagraphStyleCreate(theSettings, theNumberOfSettings);

42.     [self.attrTextaddAttribute:(id)kCTParagraphStyleAttributeNamevalue:(id)theParagraphRef range:range];

43.  

44.     CFRelease(theParagraphRef);

45. 
    

46.     if(self.hasShadow == YES){

47. self.shadowText = [self.attrTextmutableCopy];

48.         NSRange shadowRange = NSMakeRange(0, shadowText.length);

49.         [self.shadowTextaddAttribute:(NSString*)kCTForegroundColorAttributeNamevalue:(id)shadowColor.CGColorrange:shadowRange];

50. CTFramesetterRef shadowFramesetter = CTFramesetterCreateWithAttributedString((CFAttributedStringRef)shadowText);

51. UIBezierPath* shadowPath = [UIBezierPathbezierPathWithRect:CGRectMake(kJTextViewPaddingSize + shadowOffset.width, -(kJTextViewPaddingSize) - shadowOffset.height, width, textSize.height)];

52.         CTFrameRef shadowFrame = CTFramesetterCreateFrame(shadowFramesetter, CFRangeMake(0, 0), shadowPath.CGPath, NULL);

53.         CTFrameDraw(shadowFrame, context);

54.         [self.shadowText release];

55.     }

56. 
    

57. CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString((CFAttributedStringRef)self.attrText);

58. CTFrameRef textFrame = CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path.CGPath, NULL);

59. 
    

60.     CTFrameDraw(textFrame, context);

61. UIGraphicsPushContext(context);

62. }

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