fa499d299c
Added MPDisplayExtension Category to MPExpression and MPFunction Added Methods to Invalidate the Cache to MPExpressionLayout and MPFunctionLayout
34 lines
1.1 KiB
Objective-C
34 lines
1.1 KiB
Objective-C
//
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// MPExpression+MPDisplayExtension.m
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// MathPad
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//
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// Created by Kim Wittenburg on 23.04.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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#import "MPDisplayExtension.h"
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@implementation MPExpression (MPDisplayExtension)
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- (void)subexpressionChangedAtRangePath:(MPRangePath *)rangePath
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{
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NSUInteger index = [self.parent indexOfChild:self];
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NSIndexPath *newLocation = [rangePath.location indexPathByPrecedingIndex:index];
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[self.parent subexpressionChangedAtRangePath:[[MPRangePath alloc] initWithLocation:newLocation
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length:rangePath.length]];
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}
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@end
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@implementation MPFunction (MPDisplayExtension)
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- (void)subexpressionChangedAtRangePath:(MPRangePath *)rangePath
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{
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NSUInteger index = [self.parent indexOfSymbol:self];
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NSIndexPath *newLocation = [rangePath.location indexPathByPrecedingIndex:index];
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[self.parent subexpressionChangedAtRangePath:[[MPRangePath alloc] initWithLocation:newLocation
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length:rangePath.length]];
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}
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@end
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