90 lines
2.4 KiB
Objective-C
90 lines
2.4 KiB
Objective-C
//
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// MPFunctionLayout.m
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// MathPad
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//
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// Created by Kim Wittenburg on 07.08.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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#import "MPFunctionLayout.h"
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#import "MPFunction.h"
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#import "MPExpressionLayout.h"
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#import "MPSumFunction.h"
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#import "MPSumFunctionLayout.h"
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@implementation MPFunctionLayout
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#pragma mark Creation Methods
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+ (MPFunctionLayout *)functionLayoutForFunctionAtIndexPath:(NSIndexPath *)path
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parent:(MPExpressionLayout *)parent
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{
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MPFunction *function = [parent.expressionStorage elementAtIndexPath:path];
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Class class = [function class];
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if (class == [MPSumFunction class]) {
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return [[MPSumFunctionLayout alloc] initWithPath:path parent:parent];
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}
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return [[self alloc] initWithPath:path parent:parent];
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}
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- (instancetype)initWithPath:(NSIndexPath *)path
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parent:(MPLayout *)parent
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{
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self = [super initWithPath:path
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parent:parent];
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if (self) {
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_function = [parent.expressionStorage elementAtIndexPath:path];
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}
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return self;
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}
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#pragma mark Properties
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//- (MPFunction *)function
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//{
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// return [self.expressionStorage elementAtIndexPath:self.path];
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//}
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#pragma mark Cache Methods
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- (CTLineRef)lineForPrivateCacheIndex:(NSUInteger)index
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generator:(CTLineRef (^)())generator
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{
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NSUInteger actualIndex = self.function.numberOfChildren + index;
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id (^actualGenerator)() = ^{
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CTLineRef line = generator();
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return CFBridgingRelease(line);
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};
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id lineObject = [self cachableObjectForIndex:actualIndex
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generator:actualGenerator];
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return (__bridge CTLineRef)(lineObject);
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}
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- (MPLayout *)childLayoutAtIndex:(NSUInteger)index
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{
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return [self cachableObjectForIndex:index generator:^id{
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NSIndexPath *childPath = [self.function.indexPath indexPathByAddingIndex:index];
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MPExpressionLayout *layout = [[MPExpressionLayout alloc] initWithPath:childPath
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parent:self];
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return layout;
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}];
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}
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#pragma mark Size and Drawing Methods
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- (NSSize)sizeForChildAtIndex:(NSUInteger)index
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{
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MPLayout *childLayout = [self childLayoutAtIndex:index];
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return [childLayout size];
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}
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- (NSSize)generateSize
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{
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return NSZeroSize;
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}
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- (void)drawAtPoint:(NSPoint)point
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{
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}
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@end
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