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ThermostatView.m
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ThermostatView.m
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//
// ThermostatView.m
// Shion
//
// Created by Chris Karr on 4/15/10.
// Copyright 2010 CASIS LLC. All rights reserved.
//
#import "ThermostatView.h"
#import "EventManager.h"
#import "Thermostat.h"
@implementation ThermostatView
- (void) drawChartForEvents:(NSArray *) events days:(int) days
{
if ([events count] > 1)
{
NSMutableArray * chartEvents = [NSMutableArray arrayWithArray:events];
NSManagedObjectContext * context = [[EventManager sharedInstance] managedObjectContext];
NSManagedObject * e = [NSEntityDescription insertNewObjectForEntityForName:@"Event"
inManagedObjectContext:context];
[e setValue:@"device" forKey:@"type"];
[e setValue:@"" forKey:@"source"];
[e setValue:@"" forKey:@"initiator"];
[e setValue:@"" forKey:@"event_description"];
[e setValue:@"0" forKey:@"value"];
[e setValue:[NSDate date] forKey:@"date"];
[chartEvents addObject:e];
NSRect bounds = [self bounds];
bounds.size.width -= 20;
bounds.size.height -= 70;
bounds.origin.x += 10;
bounds.origin.y += 10;
if (days == 0)
days = (int) (bounds.size.height / 30);
float daySeconds = 24 * 60 * 60;
NSDate * today = [NSDate dateWithNaturalLanguageString:@"12:00:00 am"];
NSTimeInterval latestInterval = floor([today timeIntervalSince1970]) + daySeconds;
NSTimeInterval startInterval = latestInterval - (days * daySeconds);
NSString * cacheKey = [NSString stringWithFormat:@"%@-%f-%f", [[events lastObject] source], startInterval, latestInterval];
PresenceTimeline * timeline = [[[EventManager sharedInstance] timelineCache] valueForKey:cacheKey];
if (timeline == nil)
{
timeline = [[PresenceTimeline alloc] initWithStart:startInterval
end:latestInterval
initialValue:0];
float averageTemp = 0;
int invalidTemps = 0;
NSEnumerator * eventIter = [chartEvents objectEnumerator];
NSManagedObject * event = nil;
while ((event = [eventIter nextObject]))
{
float temp = [[event valueForKey:@"value"] floatValue];
if (temp == 0)
invalidTemps += 1;
averageTemp += temp;
}
averageTemp = averageTemp / ([chartEvents count] - invalidTemps);
minTemp = 9999;
maxTemp = -9999;
eventIter = [chartEvents objectEnumerator];
event = nil;
while ((event = [eventIter nextObject]))
{
float temp = [[event valueForKey:@"value"] floatValue];
if (fabs(averageTemp - temp) < 20)
{
if (temp < minTemp)
minTemp = temp;
if (temp > maxTemp)
maxTemp = temp;
}
}
float diff = maxTemp - minTemp;
unsigned int length = [chartEvents count];
if (length > 0)
{
unsigned int i = 0;
NSManagedObject * thisEvent = [chartEvents objectAtIndex:0];
NSManagedObject * nextEvent = nil;
NSTimeInterval thisTime = [[thisEvent valueForKey:@"date"] timeIntervalSince1970];
NSTimeInterval nextTime = 0;
if (length > 1)
{
nextEvent = [chartEvents objectAtIndex:1];
nextTime = [[nextEvent valueForKey:@"date"] timeIntervalSince1970];
}
for (i = 0; i < length; i++)
{
if (thisTime > startInterval)
{
float normalizedTemp = ([[thisEvent valueForKey:@"value"] floatValue] - minTemp) / diff;
if (normalizedTemp < 0)
normalizedTemp = 0;
if (normalizedTemp > 1)
normalizedTemp = 1;
if (nextEvent != nil)
[timeline setValue:(255 * normalizedTemp) atInterval:thisTime duration:(nextTime - thisTime)];
else
[timeline setValue:(255 * normalizedTemp) atInterval:thisTime];
}
if (nextEvent != nil)
{
thisEvent = nextEvent;
thisTime = nextTime;
}
if (i < (length - 1))
{
nextEvent = [chartEvents objectAtIndex:(i + 1)];
nextTime = [[nextEvent valueForKey:@"date"] timeIntervalSince1970];
}
else
nextEvent = nil;
}
}
/* eventIter = [chartEvents objectEnumerator];
event = nil;
while ((event = [eventIter nextObject]))
{
if ([[event date] timeIntervalSince1970] > startInterval)
{
float normalizedTemp = ([[event value] floatValue] - minTemp) / diff;
if (normalizedTemp < 0)
normalizedTemp = 0;
if (normalizedTemp > 1)
normalizedTemp = 1;
[timeline setValue:(255 * normalizedTemp) atInterval:[[event date] timeIntervalSince1970]];
}
}
*/
[[[EventManager sharedInstance] timelineCache] setValue:timeline forKey:cacheKey];
[timeline release];
}
NSMutableArray * labels = [NSMutableArray array];
[NSDateFormatter setDefaultFormatterBehavior:NSDateFormatterBehavior10_4];
NSDateFormatter * formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"MMM d"];
for (int day = 0; day < days; day++)
{
NSTimeInterval startInterval = latestInterval - (daySeconds * day);
NSDate * date = [NSDate dateWithTimeIntervalSince1970:startInterval - (60 * 60 * 24)];
[labels addObject:[formatter stringFromDate:date]];
}
[formatter release];
NSMutableDictionary * attributes = [NSMutableDictionary dictionary];
[attributes setValue:[NSFont fontWithName:@"Lucida Grande" size:10] forKey:NSFontAttributeName];
[attributes setValue:[NSColor whiteColor] forKey:NSForegroundColorAttributeName];
float labelWidth = 0;
NSEnumerator * labelIter = [labels objectEnumerator];
NSString * label = nil;
while (label = [labelIter nextObject])
{
NSSize labelSize = [label sizeWithAttributes:attributes];
if (labelSize.width > labelWidth)
labelWidth = labelSize.width;
}
for (int day = 0; day < days; day++)
{
NSString * label = [labels objectAtIndex:day];
NSSize labelSize = [label sizeWithAttributes:attributes];
float offset = labelWidth - labelSize.width;
[label drawAtPoint:NSMakePoint(bounds.origin.x + offset, bounds.origin.y + bounds.size.height - 3 - (30 * (day + 1))) withAttributes:attributes];
}
labelWidth += 5;
for (int day = 0; day < days; day++)
{
NSTimeInterval startInterval = latestInterval - daySeconds;
NSRect timeRect = NSMakeRect(bounds.origin.x, bounds.origin.y + bounds.size.height - (30 * (day + 1)), bounds.size.width, 30);
timeRect.origin.x += ceil(labelWidth);
timeRect.size.width -= ceil(labelWidth);
[self drawTimeline:timeline start:startInterval end:latestInterval inRect:timeRect];
latestInterval -= daySeconds;
}
[context deleteObject:e];
}
}
- (void)drawRect:(NSRect)dirtyRect
{
[super drawRect:dirtyRect];
Thermostat * thermostat = [objectController content];
if ([thermostat isKindOfClass:[Thermostat class]])
{
NSRect bounds = [self bounds];
NSArray * events = [[EventManager sharedInstance] eventsForIdentifier:[thermostat identifier] event:@"device"];
NSString * name = [thermostat name];
[self drawChartForEvents:events];
NSManagedObject * lastEvent = nil;
if ([events count] > 0)
{
NSString * state = @"Inactive";
if ([thermostat isRunning])
state = @"Active";
name = [NSString stringWithFormat:@"%@ (Range: %0.0f° - %0.0f°, %@)", name, minTemp, maxTemp, state];
lastEvent = [events lastObject];
NSNumber * lastLevel = [lastEvent valueForKey:@"value"];
NSString * desc = [NSString stringWithFormat:@"Current Temperature: %@°", lastLevel];;
NSColor * color = [NSColor whiteColor];
NSMutableDictionary * attributes = [NSMutableDictionary dictionary];
[attributes setValue:[NSFont fontWithName:@"Lucida Grande" size:18] forKey:NSFontAttributeName];
[attributes setValue:color forKey:NSForegroundColorAttributeName];
NSSize descSize = [desc sizeWithAttributes:attributes];
NSPoint point = NSMakePoint(bounds.size.width - descSize.width - 10, bounds.size.height - descSize.height - 5);
[desc drawAtPoint:point withAttributes:attributes];
[attributes setValue:[NSFont fontWithName:@"Lucida Grande" size:12] forKey:NSFontAttributeName];
[attributes setValue:[NSColor whiteColor] forKey:NSForegroundColorAttributeName];
NSSize titleSize = [name sizeWithAttributes:attributes];
point = NSMakePoint(bounds.size.width - titleSize.width - 10, bounds.size.height - descSize.height - titleSize.height - 5);
[name drawAtPoint:point withAttributes:attributes];
}
}
}
- (void) drawTimeline:(PresenceTimeline *) timeline start:(NSTimeInterval) start end:(NSTimeInterval) end inRect:(NSRect) rect object:(id) object
{
float height = rect.size.height - 10;
[[self primaryColorForObject:object] setStroke];
float daySeconds = 24 * 60 * 60;
float secondsPerPixel = daySeconds / rect.size.width;
for (unsigned int i = 0; i < rect.size.width; i++)
{
float value = [timeline averageForStart:(start + (secondsPerPixel * i)) end:(start + (secondsPerPixel * (i + 1)))];
if (value > 0)
{
if (value > 255)
value = 255;
NSBezierPath * path = [NSBezierPath bezierPath];
float x = rect.origin.x + i - 0.5;
float y = rect.origin.y;
[path moveToPoint:NSMakePoint(x, y)];
[path lineToPoint:NSMakePoint(x, y + ceil(height * (value / 255)))];
[path stroke];
}
}
[[NSColor whiteColor] setStroke];
NSBezierPath * axes = [NSBezierPath bezierPath];
[axes moveToPoint:NSMakePoint(rect.origin.x - 0.5, rect.origin.y + height)];
[axes lineToPoint:NSMakePoint(rect.origin.x - 0.5, rect.origin.y - 0.5)];
[axes lineToPoint:NSMakePoint(rect.origin.x + rect.size.width - 1, rect.origin.y - 0.5)];
[axes stroke];
float hourWidth = rect.size.width / 24;
for (int i = 1; i < 24; i++)
{
NSPoint tick = NSMakePoint(rect.origin.x - 0.5 + ceil(i * hourWidth), rect.origin.y - 0.5);
float tickLength = 2;
if (i % 6 == 0)
tickLength = 6;
else if (i % 3 == 0)
tickLength = 4;
NSBezierPath * tickPath = [NSBezierPath bezierPath];
[tickPath moveToPoint:NSMakePoint(tick.x, tick.y)];
[tickPath lineToPoint:NSMakePoint(tick.x, tick.y - tickLength - 0.5)];
[tickPath stroke];
}
}
@end