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GraphViewController.m
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GraphViewController.m
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//
// GraphViewController.m
// Metasome
//
// Created by Omar Metwally on 8/21/13.
// Copyright (c) 2013 Logisome. All rights reserved.
//
#import "GraphViewController.h"
#import "GraphView.h"
#import "MetasomeDataPointStore.h"
#import "AxisView.h"
#import "HoveringLabel.h"
#import "LineView.h"
#import "MetasomeEventStore.h"
#import "MetasomeEvent.h"
#import "Legend.h"
#import "MetasomeParameter.h"
#import "MetasomeParameterStore.h"
#import "HoveringLabel.h"
@implementation GraphViewController
UISegmentedControl *segmentControl;
float const VERTICAL_AXIS_BACKGROUND_WIDTH = 50;
float const VERTICAL_AXIS_BACKGROUND_HEIGHT = 330;
float const SCROLL_VIEW_CORRECTION_FACTOR = 64.0;
// hovering labels are the vertical axis labels as UILabels
float const VERTICAL_INTERVALS = 10.0;
float const HOVERING_AXIS_LABEL_WIDTH = 45;
float const HOVERING_AXIS_LABEL_HEIGHT = 20;
float const HOVERING_AXIS_LABEL_X_OFFSET = -45;
float const HOVERING_AXIS_LABEL_Y_OFFSET = -10;
float const VERTICAL_AXIS_LABEL_FONTSIZE = 14.0;
@synthesize ctx, verticalAxisLine, verticalAxisBackground, verticalAxisBackgroundX, verticalAxisBackgroundY, verticalAxisBackgroundWidth, verticalAxisBackgroundHeight;
@synthesize hoveringLabels, titleLabel, hoveringVerticalAxisLine;
@synthesize hoveringHorizontalLabels;
@synthesize graphView, hoveringVerticalLabels, allEventLabels;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
hoveringLabels = [[NSMutableArray alloc] init];
titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(50, 0, 200, 30)];
titleLabel.backgroundColor = [UIColor colorWithRed:0.2 green:0.0 blue:1.0 alpha:0.2];
titleLabel.layer.cornerRadius = 10.0;
titleHoveringLabel = [[HoveringLabel alloc] initWithLabel:titleLabel point:titleLabel.frame.origin];
titleLabel.backgroundColor = [UIColor clearColor];
NSLog(@"units: %@", [[[MetasomeDataPointStore sharedStore] parameterToGraph] units]);
// if the selected parameter has associated units, add them in parenthesis
if ([[[MetasomeDataPointStore sharedStore] parameterToGraph] units]) {
NSString *zeroPart = [[[[MetasomeDataPointStore sharedStore] parameterToGraph] parameterName] stringByAppendingString:@" vs time "];
NSString *firstPart = @" (";
NSString *middlePart = [[[MetasomeDataPointStore sharedStore] parameterToGraph] units];
NSString *lastPart = @")";
NSString *longTitle = [[firstPart stringByAppendingString:middlePart] stringByAppendingString:lastPart];
titleLabel.text = [zeroPart stringByAppendingString:longTitle];
NSLog(@"longTitle: %@", longTitle);
} else {
titleLabel.text = [[[[MetasomeDataPointStore sharedStore] parameterToGraph] parameterName] stringByAppendingString:@" vs time "];
}
titleLabel.textColor = [UIColor blackColor];
//titleLabel.font = [UIFont fontWithName:@"AvenirNext-Bold" size:15.0];
[titleLabel setFont:[UIFont preferredFontForTextStyle:UIFontTextStyleHeadline]];
titleLabel.textAlignment = NSTextAlignmentCenter;
titleLabel.adjustsFontSizeToFitWidth = YES;
verticalAxisLine = [[UILabel alloc] initWithFrame:CGRectZero];
verticalAxisLine.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.5];
hoveringVerticalAxisLine = [[HoveringLabel alloc] initWithLabel:verticalAxisLine point:verticalAxisLine.frame.origin];
hoveringHorizontalLabels = [[NSMutableArray alloc] init];
hoveringVerticalLabels = [[NSMutableArray alloc] init];
allEventLabels = [[NSMutableArray alloc] init];
}
return self;
}
-(void)addTitle
{
[titleLabel removeFromSuperview];
//[titleLabel setText:[graphView graphTitle]];
[[titleLabel layer] setDrawsAsynchronously:YES];
[scrollView addSubview:titleLabel];
}
-(void)addVerticalAxisLine
{
[verticalAxisLine removeFromSuperview];
[verticalAxisLine setFrame:CGRectMake([graphView originHorizontalOffset], [graphView topBuffer], 3.0, [graphView scrollViewHeight] - [graphView originVerticalOffset] - [graphView topBuffer])];
[hoveringVerticalAxisLine setInitialPoint:verticalAxisLine.frame.origin];
[scrollView addSubview:verticalAxisLine];
}
-(void)drawHorizontalAxisLabels
{
for (UILabel *l in hoveringHorizontalLabels) {
[l removeFromSuperview];
[scrollView addSubview:l];
}
}
-(void)drawVerticalAxisBackground
{
UILabel *backgroundLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0 , 0.0, graphView.originHorizontalOffset, graphView.scrollViewHeight)];
//backgroundLabel.backgroundColor = [UIColor whiteColor];
backgroundLabel.backgroundColor = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:0.9];
backgroundLabel.layer.zPosition = 10.0;
HoveringLabel *hoveringBackgroundLabel = [[HoveringLabel alloc] initWithLabel:backgroundLabel point:backgroundLabel.frame.origin];
[hoveringLabels addObject:hoveringBackgroundLabel];
[backgroundLabel removeFromSuperview];
[scrollView addSubview:backgroundLabel];
}
-(void)loadView
{
// set scale to last week's points by default
float interval = [[NSDate date] timeIntervalSince1970] - 604800;
NSDate *oneWeekAgo = [[NSDate alloc] initWithTimeIntervalSince1970:interval];
[[MetasomeDataPointStore sharedStore] setSince:oneWeekAgo];
CGRect frame = [[UIScreen mainScreen] bounds];
scrollView = [[UIScrollView alloc] initWithFrame:frame];
CGRect bigRect;
bigRect.size.width = frame.size.width*3;
bigRect.size.height = frame.size.height * 0.75;
[self setView:scrollView];
graphView = [[GraphView alloc] initWithFrame:bigRect];
[graphView setParentGraphViewController:self];
scrollView.delegate = self;
[graphView setScrollViewWidth:bigRect.size.width];
[graphView setScrollViewHeight:bigRect.size.height];
[graphView setHorizontalAxisLength:[graphView scrollViewWidth] - [graphView originHorizontalOffset] - [graphView rightBuffer]];
[graphView setBackgroundColor:[UIColor whiteColor]];
[scrollView setBackgroundColor:[UIColor whiteColor]];
[graphView setMinimumZoomScale:1.0];
[graphView setMaximumZoomScale:5.0];
[scrollView addSubview:graphView];
[scrollView setContentSize:bigRect.size];
[self drawVerticalAxisBackground];
[graphView generateAxisLabels];
[self generateHorizontalAxisLabels];
[self generateVerticalAxisLabels];
[self drawHorizontalAxisLabels];
[self drawVerticalAxisLabels];
[self addTitle];
[self addVerticalAxisLine];
NSArray *itemArray = [NSArray arrayWithObjects:@"Week", @"Month", @"3 mo", @"1 yr", nil];
segmentControl = [[UISegmentedControl alloc] initWithItems:itemArray];
//segmentControl.segmentedControlStyle = UISegmentedControlStyleBar;
segmentControl.selectedSegmentIndex = 0;
[segmentControl addTarget:self action:@selector(changeInterval) forControlEvents:UIControlEventValueChanged];
UIBarButtonItem *segmentButton = [[UIBarButtonItem alloc] initWithCustomView:segmentControl];
self.navigationItem.rightBarButtonItem = segmentButton;
//new addition
[graphView initializeGraphView];
[self generateEventLabels:[[MetasomeEventStore sharedStore] allEvents]];
[self drawEventLabels];
}
-(void)changeInterval
{
int index = ( [segmentControl selectedSegmentIndex] );
NSDate *date;
switch(index)
{
//Graph last week
case 0:
date =[[NSDate alloc] initWithTimeIntervalSince1970:( [[NSDate date] timeIntervalSince1970] - 604800)];
break;
//Graph last month
case 1:
date =[[NSDate alloc] initWithTimeIntervalSince1970:( [[NSDate date] timeIntervalSince1970] - 2.62974e6)];
break;
//Graph last 3 months
case 2:
date =[[NSDate alloc] initWithTimeIntervalSince1970:( [[NSDate date] timeIntervalSince1970] - 7.88923e6)];
break;
//Graph last year
case 3:
date =[[NSDate alloc] initWithTimeIntervalSince1970:( [[NSDate date] timeIntervalSince1970] - 3.15569e7)];
break;
default:
NSLog(@"Invalid segmented bar selection.");
}
[[MetasomeDataPointStore sharedStore] setSince:date];
date = nil;
// must re-initialize graphView
[graphView initializeGraphView];
[graphView setParentGraphViewController:self];
// clear graphView's horizontal axis labels
[hoveringHorizontalLabels makeObjectsPerformSelector:@selector(removeFromSuperview) withObject:nil];
[hoveringVerticalLabels makeObjectsPerformSelector:@selector(removeFromSuperview) withObject:nil];
// clear event labels
[allEventLabels makeObjectsPerformSelector:@selector(removeFromSuperview) withObject:nil];
[self generateHorizontalAxisLabels];
[self generateVerticalAxisLabels];
[self drawHorizontalAxisLabels];
[self drawVerticalAxisLabels];
// start new code
[self drawVerticalAxisLabels];
// end new code
[self generateEventLabels:[[MetasomeEventStore sharedStore] allEvents]];
[self drawEventLabels];
for (HoveringLabel *hl in hoveringLabels) {
[self updateLabelPosition:hl withinScrollView:scrollView];
}
[graphView setNeedsDisplay];
[scrollView setNeedsDisplay];
}
-(void)updateLabelPosition:(HoveringLabel *)hl withinScrollView:(UIScrollView *)sv
{
CGRect fixedFrame = hl.label.frame;
fixedFrame.origin.x = hl.initialPoint.x + sv.contentOffset.x;
fixedFrame.origin.y = hl.initialPoint.y + sv.contentOffset.y;
// iOS 7-specific change (navigation bars are now transparent)
fixedFrame.origin.y += SCROLL_VIEW_CORRECTION_FACTOR;
hl.label.frame = fixedFrame;
}
-(void)scrollViewDidScroll:(UIScrollView *)scrollView
{
// remove all menus
[[UIMenuController sharedMenuController] setMenuVisible:NO animated:YES];
[self updateLabelPosition:titleHoveringLabel withinScrollView:scrollView];
[self updateLabelPosition:hoveringVerticalAxisLine withinScrollView:scrollView];
for (HoveringLabel *hl in hoveringLabels) {
[self updateLabelPosition:hl withinScrollView:scrollView];
}
// print out contentInset/Offset
// NSLog(@"content: %f", scrollView.contentOffset.x);
}
-(void)preferredContentSizeChanged:(NSNotification *)aNotification
{
[titleLabel setFont:[UIFont preferredFontForTextStyle:UIFontTextStyleHeadline]];
[graphView setNeedsLayout];
}
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:YES];
[scrollView setContentOffset:CGPointMake(640.0, 0)];
}
- (void)viewDidLoad
{
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(preferredContentSizeChanged:) name:UIContentSizeCategoryDidChangeNotification object:nil];
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:YES];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
return graphView;
}
-(void)test
{
}
-(void)viewWillDisappear:(BOOL)animated
{
if (self.isMovingFromParentViewController) {
[self removeFromParentViewController];
}
[[self navigationController] popToRootViewControllerAnimated:YES];
}
/* setVerticalAxisBackgroundDimensions takes an array of UILabels
representing vertical axis labels as arguments */
-(void)setVerticalAxisBackgroundDimensions:(NSArray *)array
{
[self setVerticalAxisBackgroundX:2000];
[self setVerticalAxisBackgroundY:2000];
// verticalAxisBackgroundX will be set to the UILabel with the
// smallest x value
// verticalAxisBackgroundY will be set to the UILabel with the
// smallest y value
for (HoveringLabel *l in array) {
if (l.label.frame.origin.y > 1.0) {
if (l.label.frame.origin.x < [self verticalAxisBackgroundX])
verticalAxisBackgroundX = l.label.frame.origin.x;
if (l.label.frame.origin.y < [self verticalAxisBackgroundY])
verticalAxisBackgroundY = l.label.frame.origin.y;
}
}
verticalAxisBackgroundX = 0.0;
//verticalAxisBackgroundY -= 10.0;
verticalAxisBackgroundY -= 20.0;
[self setVerticalAxisBackgroundWidth:VERTICAL_AXIS_BACKGROUND_WIDTH];
[self setVerticalAxisBackgroundHeight:VERTICAL_AXIS_BACKGROUND_HEIGHT];
}
-(void)generateVerticalAxisLabels
{
// clear hoveringVerticalLabels array before re-populating it
[hoveringVerticalLabels removeAllObjects];
CGPoint begin = CGPointMake([graphView originHorizontalOffset], [graphView scrollViewHeight] - [graphView originVerticalOffset]);
CGPoint end = CGPointMake([graphView originHorizontalOffset], [graphView topBuffer]);
//CGPoints used for drawing grid lines
CGPoint beginGrid, endGrid;
[graphView setVerticalAxisLength:(begin.y - end.y)];
//Step size while drawing axes
float verticalStep = [graphView verticalAxisLength] / VERTICAL_INTERVALS;
float valueStep = ([graphView maxValueOnVerticalAxis] - [graphView minValueOnVerticalAxis]) / VERTICAL_INTERVALS;
// Draw horizontal grid lines
float valueCounter = 1;
float verticalValue = [graphView minValueOnVerticalAxis];
NSString *verticalDisplay;
for (float y = [graphView scrollViewHeight] - [graphView originVerticalOffset] - verticalStep; y > [graphView topBuffer]; y -= verticalStep)
{
beginGrid = CGPointMake( [graphView originHorizontalOffset], y );
endGrid = CGPointMake( [graphView scrollViewWidth] - [graphView rightBuffer], y);
verticalValue = [graphView minValueOnVerticalAxis] + (valueCounter * valueStep);
// if input is an integer type (e.g. from a slider), get rid of decimal places
if ([[[MetasomeDataPointStore sharedStore] parameterToGraph] inputType] == ParameterInputSlider || [[[MetasomeDataPointStore sharedStore] parameterToGraph] inputType] == ParameterInputInteger || [[[MetasomeDataPointStore sharedStore] parameterToGraph] inputType] == ParameterBloodPressure) {
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setMaximumFractionDigits:0];
[numberFormatter setRoundingMode:NSNumberFormatterRoundUp];
verticalDisplay = [numberFormatter stringFromNumber:[NSNumber numberWithFloat:verticalValue]];
} else {
verticalDisplay = [NSString localizedStringWithFormat:@"%.1F", verticalValue];
}
UILabel *l = [[UILabel alloc] initWithFrame:CGRectMake(beginGrid.x + HOVERING_AXIS_LABEL_X_OFFSET, beginGrid.y + HOVERING_AXIS_LABEL_Y_OFFSET, HOVERING_AXIS_LABEL_WIDTH, HOVERING_AXIS_LABEL_HEIGHT)];
l.text = verticalDisplay;
l.textColor = [UIColor blackColor];
l.backgroundColor = [UIColor clearColor];
l.font = [UIFont systemFontOfSize:VERTICAL_AXIS_LABEL_FONTSIZE];
//l.adjustsFontSizeToFitWidth = YES;
l.layer.zPosition = 15;
l.layer.drawsAsynchronously = YES;
l.textAlignment = NSTextAlignmentRight;
[hoveringVerticalLabels addObject:l];
HoveringLabel *hl = [[HoveringLabel alloc] initWithLabel:l point:l.frame.origin];
[hoveringLabels addObject:hl];
l = nil;
valueCounter += 1;
}
}
-(void)drawVerticalAxisLabels
{
for (UILabel *l in hoveringVerticalLabels) {
[l removeFromSuperview];
[scrollView addSubview:l];
}
}
-(void)generateHorizontalAxisLabels
{
int lastDay = 0;
// clear hoveringHorizontalLabels array before (re-)populating it
[hoveringHorizontalLabels removeAllObjects];
CGPoint begin = CGPointMake([graphView originHorizontalOffset], [graphView scrollViewHeight] - [graphView originVerticalOffset]);
CGPoint end = CGPointMake([graphView originHorizontalOffset], [graphView topBuffer]);
//CGPoints used for drawing grid lines
CGPoint beginGrid, endGrid;
//[self setVerticalAxisLength:(begin.y - end.y)];
//Step size while drawing axes
float horizontalStep = [graphView horizontalAxisLength] / 20.0;
float dateStep = ([graphView maxValueOnHorizontalAxis] - [graphView minValueOnHorizontalAxis]) / 20.0;
float dateCounter = 1;
float horizontalValue = [graphView minValueOnHorizontalAxis];
float x;
NSDate *runningDate;
NSString *horizontalDisplay;
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"MM/dd"];
for (
x = [graphView originHorizontalOffset] + horizontalStep; x < ( [graphView scrollViewWidth] - [graphView rightBuffer] ); x += horizontalStep )
{
beginGrid = CGPointMake(x, [graphView scrollViewHeight] - [graphView originVerticalOffset]);
endGrid = CGPointMake(x, [graphView topBuffer]);
horizontalValue = [graphView minValueOnHorizontalAxis] + (dateCounter * dateStep);
runningDate = [NSDate dateWithTimeIntervalSince1970:horizontalValue];
NSDate *currentDate = runningDate;
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit fromDate:currentDate]; // Get necessary date components
horizontalDisplay = [dateFormatter stringFromDate:runningDate];
UILabel *dateLabel = [[UILabel alloc] initWithFrame:CGRectMake(beginGrid.x - (30.0 / 2.0), beginGrid.y, 50.0, 50.0)];
dateLabel.text = horizontalDisplay;
dateLabel.textColor = [UIColor blackColor];
dateLabel.backgroundColor = [UIColor clearColor];
//dateLabel.font = [UIFont systemFontOfSize:20.0];
dateLabel.font = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
dateLabel.adjustsFontSizeToFitWidth = YES;
dateLabel.layer.drawsAsynchronously = YES;
dateLabel.layer.zPosition = 5;
// rotate the date label
dateLabel.transform = CGAffineTransformMakeRotation(M_PI_4);
[hoveringHorizontalLabels addObject:dateLabel];
// NSLog(@"day: %i, lastDay = %i", [components day], lastDay);
if (lastDay == [components day]) {
//NSLog(@"equal");
}
else {
lastDay = [components day];
dateLabel.font = [UIFont preferredFontForTextStyle:UIFontTextStyleHeadline];
// NSLog(@"not equal");
}
dateLabel = nil;
dateCounter +=1;
}
}
-(void)generateEventLabels:(NSArray *)events
{
float horizontalPos, verticalPos;
[allEventLabels removeAllObjects];
for (MetasomeEvent *ev in events) {
if ([[ev date] timeIntervalSince1970] > [[[MetasomeDataPointStore sharedStore] since] timeIntervalSince1970] && [ev visible]) {
horizontalPos = ([[ev date] timeIntervalSince1970] - [graphView minValueOnHorizontalAxis]) * [graphView horizontalScaleFactor] + [graphView originHorizontalOffset];
horizontalPos -= graphView.verticalAxisLength / 2.0;
verticalPos = graphView.scrollViewHeight - graphView.originVerticalOffset - graphView.verticalAxisLength/2.0;
verticalPos -= 15;
UILabel *eventLabel = [[UILabel alloc] initWithFrame:CGRectMake(horizontalPos, verticalPos, [graphView verticalAxisLength], 30.0)];
//eventLabel.backgroundColor = [UIColor colorWithRed:1.0 green:0.0 blue:0.0 alpha:0.5];
eventLabel.backgroundColor = [UIColor colorWithRed:0.65 green:0.51 blue:0.93 alpha:0.5];
eventLabel.layer.cornerRadius = 5;
[eventLabel.layer setBorderColor:[[[UIColor grayColor] colorWithAlphaComponent:0.5] CGColor]];
[eventLabel.layer setBorderWidth:1.0];
[eventLabel setText:[ev title]];
[eventLabel setTextAlignment:NSTextAlignmentCenter];
[eventLabel setTextColor:[UIColor whiteColor]];
[eventLabel setAdjustsFontSizeToFitWidth:YES];
eventLabel.transform = CGAffineTransformMakeRotation(-M_PI_2);
eventLabel.layer.drawsAsynchronously = YES;
[allEventLabels addObject:eventLabel];
eventLabel = nil;
}
}
}
-(void)removeEventLabels
{
[allEventLabels makeObjectsPerformSelector:@selector(removeFromSuperview) withObject:nil];
}
-(void)drawEventLabels
{
for (UILabel *l in allEventLabels) {
[scrollView addSubview:l];
}
}
@end