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Added custom drawing to layout example.
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,13 @@ | ||
| // | ||
| // TKDOutliningLayoutManager.h | ||
| // TextKitDemo | ||
| // | ||
| // Created by Max Seelemann on 29.09.13. | ||
| // Copyright (c) 2013 Max Seelemann. All rights reserved. | ||
| // | ||
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| #import <UIKit/UIKit.h> | ||
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| @interface TKDOutliningLayoutManager : NSLayoutManager | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| // | ||
| // TKDOutliningLayoutManager.m | ||
| // TextKitDemo | ||
| // | ||
| // Created by Max Seelemann on 29.09.13. | ||
| // Copyright (c) 2013 Max Seelemann. All rights reserved. | ||
| // | ||
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| #import "TKDOutliningLayoutManager.h" | ||
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| @implementation TKDOutliningLayoutManager | ||
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| - (void)drawUnderlineForGlyphRange:(NSRange)glyphRange underlineType:(NSUnderlineStyle)underlineVal baselineOffset:(CGFloat)baselineOffset lineFragmentRect:(CGRect)lineRect lineFragmentGlyphRange:(NSRange)lineGlyphRange containerOrigin:(CGPoint)containerOrigin | ||
| { | ||
| // Left border (== position) of first underlined glyph | ||
| CGFloat firstPosition = [self locationForGlyphAtIndex: glyphRange.location].x; | ||
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| // Right border (== position + width) of last underlined glyph | ||
| CGFloat lastPosition; | ||
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| // When link is not the last text in line, just use the location of the next glyph | ||
| if (NSMaxRange(glyphRange) < NSMaxRange(lineGlyphRange)) { | ||
| lastPosition = [self locationForGlyphAtIndex: NSMaxRange(glyphRange)].x; | ||
| } | ||
| // Otherwise get the end of the actually used rect | ||
| else { | ||
| lastPosition = [self lineFragmentUsedRectForGlyphAtIndex:NSMaxRange(glyphRange)-1 effectiveRange:NULL].size.width; | ||
| } | ||
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| // Inset line fragment to underlined area | ||
| lineRect.origin.x += firstPosition; | ||
| lineRect.size.width = lastPosition - firstPosition; | ||
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| // Offset line by container origin | ||
| lineRect.origin.x += containerOrigin.x; | ||
| lineRect.origin.y += containerOrigin.y; | ||
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| // Align line to pixel boundaries, passed rects may be | ||
| lineRect = CGRectInset(CGRectIntegral(lineRect), .5, .5); | ||
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| [[UIColor greenColor] set]; | ||
| [[UIBezierPath bezierPathWithRect: lineRect] stroke]; | ||
| } | ||
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| @end |
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