4a3ea0cede
Added Keyboard Selection Support Added Mouse Selection Support Added Keyboard Editing Support Corrected Some Bugs Abstracted the Layout System further Added Functions Button (test)
87 lines
2.8 KiB
Objective-C
87 lines
2.8 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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inRootExpression:(MPExpression *)rootExpression
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parent:(MPExpressionLayout *)parent
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{
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MPFunction *function = [rootExpression 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] initWithElementAtPath:path
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inRootExpression:rootExpression
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parent:parent];
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}
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return [[self alloc] initWithElementAtPath:path
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inRootExpression:rootExpression
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parent:parent];
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}
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- (instancetype)initWithElementAtPath:(NSIndexPath *)path
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inRootExpression:(MPExpression *)rootExpression
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parent:(MPLayout *)parent
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{
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self = [super initWithElementAtPath:path
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inRootExpression:rootExpression
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parent:parent];
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if (self) {
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_function = [rootExpression elementAtIndexPath:path];
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}
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return self;
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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] initWithElementAtPath:childPath
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inRootExpression:self.function.rootExpression
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parent:self];
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layout.flipped = self.flipped;
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layout.usesSmallSize = (index == 0 || index == 1) ? YES : self.usesSmallSize;
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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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- (NSRect)generateBounds
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{
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return NSZeroRect;
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}
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- (void)draw
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{
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}
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@end
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