#import "CDIAttributedLabel.h"

#import <CoreText/CoreText.h>

@implementation CDIAttributedLabel

- (void)drawStrike:(CTFrameRef)frame inRect:(CGRect)rect context:(CGContextRef)c {

NSArray *lines = (__bridge NSArray *)CTFrameGetLines(frame);

CGPoint origins[[lines count]];

CTFrameGetLineOrigins(frame, CFRangeMake(0, 0), origins);

CFIndex lineIndex = 0;

for (id line in lines) {

CGRect lineBounds = CTLineGetImageBounds((__bridge CTLineRef)line, c);

lineBounds.origin.x = origins[lineIndex].x;

lineBounds.origin.y = origins[lineIndex].y;

for (id glyphRun in (__bridge NSArray *)CTLineGetGlyphRuns((__bridge CTLineRef)line)) {

NSDictionary *attributes = (__bridge NSDictionary *)CTRunGetAttributes((__bridge CTRunRef) glyphRun);

BOOL strikeOut = [[attributes objectForKey:kTTTStrikeOutAttributeName] boolValue];

NSInteger superscriptStyle = [[attributes objectForKey:(id)kCTSuperscriptAttributeName] integerValue];

if (strikeOut) {

CGRect runBounds = CGRectZero;

CGFloat ascent = 0.0f;

CGFloat descent = 0.0f;

runBounds.size.width = CTRunGetTypographicBounds((__bridge CTRunRef)glyphRun, CFRangeMake(0, 0), &ascent, &descent, NULL);

runBounds.size.height = ascent + descent;

CGFloat xOffset = CTLineGetOffsetForStringIndex((__bridge CTLineRef)line, CTRunGetStringRange((__bridge CTRunRef)glyphRun).location, NULL);

runBounds.origin.x = origins[lineIndex].x + rect.origin.x + xOffset;

runBounds.origin.y = origins[lineIndex].y; // + rect.origin.y;

runBounds.origin.y -= descent;

// Don't draw strikeout too far to the right

if (CGRectGetWidth(runBounds) > CGRectGetWidth(lineBounds)) {

runBounds.size.width = CGRectGetWidth(lineBounds);

}

switch (superscriptStyle) {

case 1:

runBounds.origin.y -= ascent * 0.47f;

break;

case -1:

runBounds.origin.y += ascent * 0.25f;

break;

default:

break;

}

// Use text color, or default to black

id color = [attributes objectForKey:(id)kCTForegroundColorAttributeName];

if (color) {

CGContextSetStrokeColorWithColor(c, (__bridge CGColorRef)color);

} else {

CGContextSetGrayStrokeColor(c, 0.0f, 1.0);

}

// CTFontRef font = CTFontCreateWithName((CFStringRef)self.font.fontName, self.font.pointSize, NULL);

CGContextSetLineWidth(c, 2.0f); // CTFontGetUnderlineThickness(font));

CGFloat y = roundf(runBounds.origin.y + runBounds.size.height / 2.0f) - 1.0f;

CGContextMoveToPoint(c, runBounds.origin.x, y);

CGContextAddLineToPoint(c, runBounds.origin.x + runBounds.size.width, y);

CGContextStrokePath(c);

}

}

lineIndex++;

}

}