Reorganized File Structure
Added Documentation
This commit is contained in:
Kim Wittenburg
272
MathKit/MPFunctionsViewController.m
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272
MathKit/MPFunctionsViewController.m
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//
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// MPFunctionsViewController.m
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// MathPad
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//
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// Created by Kim Wittenburg on 28.09.14.
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// Copyright (c) 2014 Kim Wittenburg. All rights reserved.
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//
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#import "MPFunctionsViewController.h"
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#import "MPExpression.h"
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#import "NSString+MPExpressionElement.h"
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#import "MPFunction.h"
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#import "MPSumFunction.h"
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#import "MPParenthesisFunction.h"
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#import "MPPowerFunction.h"
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#import "MPFractionFunction.h"
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#import "MPFunctionLayout.h"
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@class MPFunctionsCollectionView, MPFunctionTemplateView, MPFunctionTemplateItem;
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@interface MPFunctionsCollectionView : NSCollectionView
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@property (nonatomic, weak) MPFunctionTemplateItem *hoverItem;
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@property (nonatomic, weak) id target;
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@property (nonatomic) SEL action;
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@end
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@interface MPFunctionTemplateView : NSView
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@property (nonatomic, strong) MPFunction *functionTemplate;
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@property (readonly, nonatomic, strong) MPFunctionLayout *functionTemplateLayout;
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@property (nonatomic, strong) NSTrackingArea *trackingArea;
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@property (nonatomic) BOOL mouseOver;
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@end
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@interface MPFunctionTemplateItem : NSCollectionViewItem
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@property (nonatomic, copy) NSString *templateName;
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@end
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@implementation MPFunctionsCollectionView
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- (void)mouseDown:(NSEvent *)theEvent
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{
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}
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- (void)mouseUp:(NSEvent *)theEvent
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{
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NSPoint pointInView = [self convertPoint:theEvent.locationInWindow
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fromView:nil];
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for (NSUInteger index = 0; index < self.content.count; index++) {
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NSCollectionViewItem *viewItem = [self itemAtIndex:index];
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if (NSMouseInRect(pointInView, viewItem.view.frame, self.isFlipped)) {
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if (self.target && self.action) {
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[self.target performSelector:self.action
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withObject:[[viewItem.representedObject objectForKey:@"function" ] copy]
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afterDelay:0.0];
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}
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break;
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}
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}
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}
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@end
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@implementation MPFunctionTemplateView
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- (void)updateTrackingAreas
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{
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if (!self.trackingArea) {
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self.trackingArea = [[NSTrackingArea alloc] initWithRect:self.bounds
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options:NSTrackingMouseEnteredAndExited|NSTrackingActiveInKeyWindow|NSTrackingInVisibleRect
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owner:self
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userInfo:nil];
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[self addTrackingArea:self.trackingArea];
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}
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[super updateTrackingAreas];
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}
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- (void)mouseEntered:(NSEvent *)theEvent
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{
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self.mouseOver = YES;
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self.needsDisplay = YES;
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}
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- (void)mouseExited:(NSEvent *)theEvent
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{
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self.mouseOver = NO;
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self.needsDisplay = YES;
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}
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- (void)setFunctionTemplate:(MPFunction *)functionTemplate
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{
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_functionTemplate = functionTemplate;
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_functionTemplateLayout = nil;
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}
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@synthesize functionTemplateLayout = _functionTemplateLayout;
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- (MPFunctionLayout *)functionTemplateLayout
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{
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if (!_functionTemplateLayout) {
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_functionTemplateLayout = [MPFunctionLayout functionLayoutForFunction:self.functionTemplate
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parent:nil];
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_functionTemplateLayout.usesSmallSize = YES;
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}
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return _functionTemplateLayout;
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}
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- (NSSize)intrinsicContentSize
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{
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return [self.functionTemplateLayout bounds].size;
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}
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- (BOOL)isOpaque
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{
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return NO;
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}
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- (void)drawRect:(NSRect)dirtyRect
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{
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if (self.mouseOver) {
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[[NSColor selectedTextBackgroundColor] set];
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NSBezierPath *background = [NSBezierPath bezierPathWithRoundedRect:self.bounds
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xRadius:10
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yRadius:10];
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[background fill];
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}
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[[NSColor textColor] set];
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NSPoint origin = NSMakePoint((self.bounds.size.width - self.functionTemplateLayout.bounds.size.width) / 2, (self.bounds.size.height - self.functionTemplateLayout.bounds.size.height) / 2);
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origin.y -= self.functionTemplateLayout.bounds.origin.y;
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[self.functionTemplateLayout drawAtPoint:origin];
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}
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@end
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@implementation MPFunctionTemplateItem
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static void *MPFunctionTemplateViewMouseOverContext = @"MPFunctionTemplateViewMouseOverContext";
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- (id)awakeAfterUsingCoder:(NSCoder *)aDecoder
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{
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return [super awakeAfterUsingCoder:aDecoder];
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}
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- (void)observeValueForKeyPath:(NSString *)keyPath
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ofObject:(id)object
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change:(NSDictionary *)change
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context:(void *)context
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{
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if (context == MPFunctionTemplateViewMouseOverContext) {
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MPFunctionTemplateView *view = (MPFunctionTemplateView *)self.view;
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((MPFunctionsCollectionView *)self.collectionView).hoverItem = view.mouseOver ? self : nil;
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} else {
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[super observeValueForKeyPath:keyPath
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ofObject:object
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change:change
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context:context];
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}
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}
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- (void)setRepresentedObject:(id)representedObject
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{
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MPFunctionTemplateView *view = (MPFunctionTemplateView *)self.view;
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view.functionTemplate = [representedObject objectForKey:@"function"];
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self.templateName = [representedObject objectForKey:@"name"];
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[view addObserver:self
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forKeyPath:@"mouseOver"
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options:0
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context:MPFunctionTemplateViewMouseOverContext];
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[super setRepresentedObject:representedObject];
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}
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@end
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@interface MPFunctionsViewController ()
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@end
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@implementation MPFunctionsViewController
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- (id)init
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{
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return [self initWithNibName:@"MPFunctionsViewController"
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bundle:[NSBundle bundleForClass:[self class]]];
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}
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- (void)awakeFromNib
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{
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MPFunction *sumFunction = [[MPSumFunction alloc] init];
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MPFunction *parenthesisFunction = [[MPParenthesisFunction alloc] init];
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MPFunction *powerFunction = [[MPPowerFunction alloc] init];
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MPPowerFunction *squareFunction = [[MPPowerFunction alloc] init];
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squareFunction.exponentExpression = [[MPExpression alloc] initWithElement:@"2"];
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MPPowerFunction *cubicFunction = [[MPPowerFunction alloc] init];
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cubicFunction.exponentExpression = [[MPExpression alloc] initWithElement:@"3"];
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MPFractionFunction *fractionFunction = [[MPFractionFunction alloc] init];
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self.functionPrototypes = @[
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@{@"function": sumFunction,
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@"name": NSLocalizedString(@"Sum", @"Sum Function Name")},
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@{@"function": parenthesisFunction,
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@"name": NSLocalizedString(@"Parenthesis", @"Parenthesis Function Name")},
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@{@"function": squareFunction,
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@"name": NSLocalizedString(@"Square", @"Square Function Name")},
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@{@"function": cubicFunction,
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@"name": NSLocalizedString(@"Cubic", @"Cubic Function Name")},
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@{@"function": powerFunction,
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@"name": NSLocalizedString(@"Power", @"Power Function Name")},
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@{@"function": fractionFunction,
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@"name": NSLocalizedString(@"Fraction", @"Fraction Function Name")}
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];
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[self.collectionView addObserver:self
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forKeyPath:@"hoverItem"
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options:0
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context:MPCollectionViewHoverItemChangeContext];
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self.collectionView.target = self.target;
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self.collectionView.action = self.action;
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}
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static void *MPCollectionViewHoverItemChangeContext = @"MPCollectionViewHoverItemChangeContext";
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- (void)setView:(NSView *)view
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{
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[super setView:view];
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}
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- (void)setTarget:(id)target
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{
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_target = target;
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if (self.collectionView) {
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self.collectionView.target = target;
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}
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}
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- (void)setAction:(SEL)action
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{
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_action = action;
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if (self.collectionView) {
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self.collectionView.action = action;
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}
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}
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- (void)observeValueForKeyPath:(NSString *)keyPath
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ofObject:(id)object
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change:(NSDictionary *)change
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context:(void *)context
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{
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if (context == MPCollectionViewHoverItemChangeContext) {
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self.currentDescription = self.collectionView.hoverItem.templateName;
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} else {
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[super observeValueForKeyPath:keyPath
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ofObject:object
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change:change
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context:context];
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}
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}
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@end
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