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//
// HFTextVisualStyleRun.m
// HexFiend_2
//
// Copyright 2009 ridiculous_fish. All rights reserved.
//
#import "HFTextVisualStyleRun.h"
@implementation HFTextVisualStyleRun
- (instancetype)init {
self = [super init];
_scale = 1.;
_shouldDraw = YES;
return self;
}
- (void)dealloc {
[_foregroundColor release];
[_backgroundColor release];
[_bookmarkStarts release];
[_bookmarkExtents release];
[_bookmarkEnds release];
[super dealloc];
}
- (void)set {
[_foregroundColor set];
if (_scale != (CGFloat)1.0) {
CGContextRef ctx = [[NSGraphicsContext currentContext] graphicsPort];
CGAffineTransform tm = CGContextGetTextMatrix(ctx);
/* Huge hack - adjust downward a little bit if we are scaling */
tm = CGAffineTransformTranslate(tm, 0, -.25 * (_scale - 1));
tm = CGAffineTransformScale(tm, _scale, _scale);
CGContextSetTextMatrix(ctx, tm);
}
}
static inline NSUInteger flip(NSUInteger x) {
return _Generic(x, unsigned: NSSwapInt, unsigned long: NSSwapLong, unsigned long long: NSSwapLongLong)(x);
}
static inline NSUInteger rol(NSUInteger x, unsigned char r) {
r %= sizeof(NSUInteger)*8;
return (x << r) | (x << (sizeof(NSUInteger)*8 - r));
}
- (NSUInteger)hash {
NSUInteger A = 0;
// All these hashes tend to have only low bits, except the double which has only high bits.
#define Q(x, r) rol(x, sizeof(NSUInteger)*r/6)
A ^= flip([_foregroundColor hash] ^ Q([_backgroundColor hash], 2)); // skew high
A ^= Q(_range.length ^ flip(_range.location), 2); // skew low
A ^= flip([_bookmarkStarts hash]) ^ Q([_bookmarkEnds hash], 3) ^ Q([_bookmarkExtents hash], 4); // skew high
A ^= _shouldDraw ? 0 : (NSUInteger)-1;
A ^= *(NSUInteger*)&_scale; // skew high
return A;
#undef Q
}
- (BOOL)isEqual:(HFTextVisualStyleRun *)run {
if(![run isKindOfClass:[self class]]) return NO;
/* Check each field for equality. */
if(!NSEqualRanges(_range, run->_range)) return NO;
if(_scale != run->_scale) return NO;
if(_shouldDraw != run->_shouldDraw) return NO;
if(!!_foregroundColor != !!run->_foregroundColor) return NO;
if(!!_backgroundColor != !!run->_backgroundColor) return NO;
if(!!_bookmarkStarts != !!run->_bookmarkStarts) return NO;
if(!!_bookmarkExtents != !!run->_bookmarkExtents) return NO;
if(!!_bookmarkEnds != !!run->_bookmarkEnds) return NO;
if(![_foregroundColor isEqual: run->_foregroundColor]) return NO;
if(![_backgroundColor isEqual: run->_backgroundColor]) return NO;
if(![_bookmarkStarts isEqual: run->_bookmarkStarts]) return NO;
if(![_bookmarkExtents isEqual: run->_bookmarkExtents]) return NO;
if(![_bookmarkEnds isEqual: run->_bookmarkEnds]) return NO;
return YES;
}
@end
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