OtaClock/OtaClock/Render.m

//
//  Render.m
//  OtaClock
//
//  Created by Thomas Buck on 17.08.15.
//  Copyright (c) 2015 xythobuz. All rights reserved.
//

#import "MainView.h"
#import "Render.h"

#define FULL_IMAGE_WIDTH 86
#define FULL_IMAGE_HEIGHT 80
#define BUBBLE_Y_OFFSET 45
#define OTACON_X_OFFSET 1
#define EYE_X_OFFSET 60
#define EYE_Y_OFFSET 45

#define FONT_DAYS_WIDTH 17
#define FONT_DAYS_HEIGHT 3
#define FONT_DAYS_PADDING 1
#define FONT_DAYS_X_OFFSET 31
#define FONT_DAYS_Y_OFFSET 72

#define FONT_LARGE_WIDTH 6
#define FONT_LARGE_HEIGHT 7
#define FONT_LARGE_PADDING 1

#define FONT_LARGE_Y_OFFSET 63
#define FONT_LARGE_X0_OFFSET 5
#define FONT_LARGE_X1_OFFSET 12
#define FONT_LARGE_X2_OFFSET 21
#define FONT_LARGE_X3_OFFSET 28
#define FONT_LARGE_X4_OFFSET 37
#define FONT_LARGE_X5_OFFSET 44

#define FONT_SMALL_WIDTH 4
#define FONT_SMALL_HEIGHT 5
#define FONT_SMALL_PADDING 1

#define FONT_SMALL_DATE_Y_OFFSET 71
#define FONT_SMALL_DATE_X0_OFFSET 3
#define FONT_SMALL_DATE_X1_OFFSET 8
#define FONT_SMALL_DATE_X2_OFFSET 17
#define FONT_SMALL_DATE_X3_OFFSET 22

#define FONT_SMALL_ALARM_Y_OFFSET 57
#define FONT_SMALL_ALARM_X0_OFFSET 29
#define FONT_SMALL_ALARM_X1_OFFSET 34
#define FONT_SMALL_ALARM_X2_OFFSET 41
#define FONT_SMALL_ALARM_X3_OFFSET 46

#define ALARM_X_OFFSET 5
#define ALARM_Y_OFFSET 57

#define DOTS_TIME_Y_OFFSET 63
#define DOTS_TIME_X0_OFFSET 18
#define DOTS_TIME_X1_OFFSET 34

#define DOTS_ALARM_X_OFFSET 38
#define DOTS_ALARM_Y_OFFSET 57

#define BLANK_OFFSET_X 13
#define BLANK_OFFSET_Y 71

@interface Render ()

@property (assign) CGImageRef otaconGraphic, bubbleGraphic, alarmGraphic, blankGraphic;
@property (assign) CGImageRef eye0, eye1, eye2, eye3, eye4, dotSmallGraphic, dotLargeGraphic;
@property (assign) CGImageRef fontMonday, fontTuesday, fontWednesday, fontThursday, fontFriday, fontSaturday, fontSunday;
@property (assign) CGImageRef fontSmall1, fontSmall2, fontSmall3, fontSmall4, fontSmall5, fontSmall6, fontSmall7, fontSmall8, fontSmall9, fontSmall0;
@property (assign) CGImageRef fontLarge1, fontLarge2, fontLarge3, fontLarge4, fontLarge5, fontLarge6, fontLarge7, fontLarge8, fontLarge9, fontLarge0;

@property (assign) NSInteger eyeToDraw, dayOfWeek;
@property (assign) NSInteger dateDigit0, dateDigit1, dateDigit2, dateDigit3;
@property (assign) NSInteger alarmDigit0, alarmDigit1, alarmDigit2, alarmDigit3;
@property (assign) NSInteger timeDigit0, timeDigit1, timeDigit2, timeDigit3, timeDigit4, timeDigit5;
@property (assign) BOOL alarmSign, alarmDots, timeDots, drawDate;

@property (assign) NSSize fullSize;
@property (assign) CGContextRef drawContext;

@property (weak) MainView *parent;

@end

@implementation Render

@synthesize otaconGraphic, bubbleGraphic, alarmGraphic, blankGraphic;
@synthesize eye0, eye1, eye2, eye3, eye4, dotSmallGraphic, dotLargeGraphic;
@synthesize fontMonday, fontTuesday, fontWednesday, fontThursday, fontFriday, fontSaturday, fontSunday;
@synthesize fontSmall1, fontSmall2, fontSmall3, fontSmall4, fontSmall5, fontSmall6, fontSmall7, fontSmall8, fontSmall9, fontSmall0;
@synthesize fontLarge1, fontLarge2, fontLarge3, fontLarge4, fontLarge5, fontLarge6, fontLarge7, fontLarge8, fontLarge9, fontLarge0;

@synthesize eyeToDraw, dayOfWeek;
@synthesize dateDigit0, dateDigit1, dateDigit2, dateDigit3;
@synthesize alarmDigit0, alarmDigit1, alarmDigit2, alarmDigit3;
@synthesize timeDigit0, timeDigit1, timeDigit2, timeDigit3, timeDigit4, timeDigit5;
@synthesize alarmSign, alarmDots, timeDots, drawDate;

@synthesize fullSize;
@synthesize drawContext;
@synthesize parent;

- (CGImageRef)eyeHelper:(NSInteger)index {
    if (index == 0) return eye0;
    if (index == 1) return eye1;
    if (index == 2) return eye2;
    if (index == 3) return eye3;
    if (index == 4) return eye4;
    
    NSLog(@"Render:eyeHelper:%ld unknown index!", (long)index);
    return eye0;
}

- (CGImageRef)dayHelper:(NSInteger)index {
    if (index == -1) return fontSunday;
    if (index == 0) return fontMonday;
    if (index == 1) return fontTuesday;
    if (index == 2) return fontWednesday;
    if (index == 3) return fontThursday;
    if (index == 4) return fontFriday;
    if (index == 5) return fontSaturday;
    if (index == 6) return fontSunday;
    
    NSLog(@"Render:dayHelper:%ld unknown index!", (long)index);
    return fontMonday;
}

- (CGImageRef)smallHelper:(NSInteger)index {
    if (index == 0) return fontSmall0;
    if (index == 1) return fontSmall1;
    if (index == 2) return fontSmall2;
    if (index == 3) return fontSmall3;
    if (index == 4) return fontSmall4;
    if (index == 5) return fontSmall5;
    if (index == 6) return fontSmall6;
    if (index == 7) return fontSmall7;
    if (index == 8) return fontSmall8;
    if (index == 9) return fontSmall9;
    
    NSLog(@"Render:smallHelper:%ld unknown index!", (long)index);
    return fontSmall0;
}

- (CGImageRef)largeHelper:(NSInteger)index {
    if (index == 0) return fontLarge0;
    if (index == 1) return fontLarge1;
    if (index == 2) return fontLarge2;
    if (index == 3) return fontLarge3;
    if (index == 4) return fontLarge4;
    if (index == 5) return fontLarge5;
    if (index == 6) return fontLarge6;
    if (index == 7) return fontLarge7;
    if (index == 8) return fontLarge8;
    if (index == 9) return fontLarge9;
    
    NSLog(@"Render:largeHelper:%ld unknown index!", (long)index);
    return fontLarge0;
}

- (id)initWithParent:(MainView *)par {
    self = [super init];
    if (self == nil) return nil;
    
    parent = par;
    
    NSImage *otaconImage = [NSImage imageNamed:@"otacon"];
    NSImage *bubbleImage = [NSImage imageNamed:@"bubble"];
    NSImage *eye0Image = [NSImage imageNamed:@"eyes_0"];
    NSImage *eye1Image = [NSImage imageNamed:@"eyes_1"];
    NSImage *eye2Image = [NSImage imageNamed:@"eyes_2"];
    NSImage *eye3Image = [NSImage imageNamed:@"eyes_3"];
    NSImage *eye4Image = [NSImage imageNamed:@"eyes_4"];
    NSImage *fontDaysImage = [NSImage imageNamed:@"font_days"];
    NSImage *fontSmallImage = [NSImage imageNamed:@"font_small"];
    NSImage *fontLargeImage = [NSImage imageNamed:@"font_large"];
    NSImage *alarmImage = [NSImage imageNamed:@"alarm"];
    NSImage *dotsSmallImage = [NSImage imageNamed:@"dots_small"];
    NSImage *dotsLargeImage = [NSImage imageNamed:@"dots_large"];
    NSImage *blankImage = [NSImage imageNamed:@"blank"];
    
    NSGraphicsContext *context = [NSGraphicsContext graphicsContextWithAttributes:nil];
    
    otaconGraphic = [otaconImage CGImageForProposedRect:nil context:context hints:nil];
    bubbleGraphic = [bubbleImage CGImageForProposedRect:nil context:context hints:nil];
    alarmGraphic = [alarmImage CGImageForProposedRect:nil context:context hints:nil];
    dotSmallGraphic = [dotsSmallImage CGImageForProposedRect:nil context:context hints:nil];
    dotLargeGraphic = [dotsLargeImage CGImageForProposedRect:nil context:context hints:nil];
    blankGraphic = [blankImage CGImageForProposedRect:nil context:context hints:nil];
    eye0 = [eye0Image CGImageForProposedRect:nil context:context hints:nil];
    eye1 = [eye1Image CGImageForProposedRect:nil context:context hints:nil];
    eye2 = [eye2Image CGImageForProposedRect:nil context:context hints:nil];
    eye3 = [eye3Image CGImageForProposedRect:nil context:context hints:nil];
    eye4 = [eye4Image CGImageForProposedRect:nil context:context hints:nil];
    
    CGImageRef fontDays = [fontDaysImage CGImageForProposedRect:nil context:context hints:nil];
    NSRect rectDay;
    rectDay.size.width = FONT_DAYS_WIDTH;
    rectDay.size.height = FONT_DAYS_HEIGHT;
    rectDay.origin.x = 0;
    rectDay.origin.y = 0;
    fontMonday = CGImageCreateWithImageInRect(fontDays, rectDay);
    rectDay.origin.y += FONT_DAYS_HEIGHT + FONT_DAYS_PADDING;
    fontTuesday = CGImageCreateWithImageInRect(fontDays, rectDay);
    rectDay.origin.y += FONT_DAYS_HEIGHT + FONT_DAYS_PADDING;
    fontWednesday = CGImageCreateWithImageInRect(fontDays, rectDay);
    rectDay.origin.y += FONT_DAYS_HEIGHT + FONT_DAYS_PADDING;
    fontThursday = CGImageCreateWithImageInRect(fontDays, rectDay);
    rectDay.origin.y += FONT_DAYS_HEIGHT + FONT_DAYS_PADDING;
    fontFriday = CGImageCreateWithImageInRect(fontDays, rectDay);
    rectDay.origin.y += FONT_DAYS_HEIGHT + FONT_DAYS_PADDING;
    fontSaturday = CGImageCreateWithImageInRect(fontDays, rectDay);
    rectDay.origin.y += FONT_DAYS_HEIGHT + FONT_DAYS_PADDING;
    fontSunday = CGImageCreateWithImageInRect(fontDays, rectDay);
    
    NSRect rect;
    CGImageRef fontSmall = [fontSmallImage CGImageForProposedRect:nil context:context hints:nil];
    rect.size.width = FONT_SMALL_WIDTH;
    rect.size.height = FONT_SMALL_HEIGHT;
    rect.origin.x = 0;
    rect.origin.y = 0;
    fontSmall0 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall1 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall2 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall3 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall4 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall5 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall6 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall7 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall8 = CGImageCreateWithImageInRect(fontSmall, rect);
    rect.origin.x += FONT_SMALL_WIDTH + FONT_SMALL_PADDING;
    fontSmall9 = CGImageCreateWithImageInRect(fontSmall, rect);
    
    CGImageRef fontLarge = [fontLargeImage CGImageForProposedRect:nil context:context hints:nil];
    rect.size.width = FONT_LARGE_WIDTH;
    rect.size.height = FONT_LARGE_HEIGHT;
    rect.origin.x = 0;
    rect.origin.y = 0;
    fontLarge0 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge1 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge2 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge3 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge4 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge5 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge6 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge7 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge8 = CGImageCreateWithImageInRect(fontLarge, rect);
    rect.origin.x += FONT_LARGE_WIDTH + FONT_LARGE_PADDING;
    fontLarge9 = CGImageCreateWithImageInRect(fontLarge, rect);
    
    fullSize.width = FULL_IMAGE_WIDTH;
    fullSize.height = FULL_IMAGE_HEIGHT;
    
    drawContext = CGBitmapContextCreate(NULL, fullSize.width, fullSize.height, 8, 0, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaPremultipliedLast | kCGBitmapByteOrderDefault);
    
    eyeToDraw = 0;
    dayOfWeek = 0;
    dateDigit0 = 1;
    dateDigit1 = 8;
    dateDigit2 = 8;
    dateDigit3 = 8;
    timeDigit0 = 8;
    timeDigit1 = 8;
    timeDigit2 = 8;
    timeDigit3 = 8;
    timeDigit4 = 8;
    timeDigit5 = 8;
    timeDots = YES;
    
    alarmDigit0 = -1;
    alarmDigit1 = -1;
    alarmDigit2 = -1;
    alarmDigit3 = -1;
    alarmSign = NO;
    alarmDots = NO;
    
    return self;
}

- (NSSize)baseSize {
    return fullSize;
}

#define CONVERT_DECIMAL(num, ten, one) do { \
    if (num >= 50) { \
        ten = 5; \
        one = num - 50; \
    } else if (num >= 40) { \
        ten = 4; \
        one = num - 40; \
    } else if (num >= 30) { \
        ten = 3; \
        one = num - 30; \
    } else if (num >= 20) { \
        ten = 2; \
        one = num - 20; \
    } else if (num >= 10) { \
        ten = 1; \
        one = num - 10; \
    } else { \
        ten = 0; \
        one = num; \
    } \
} while (0);

- (void)drawDate:(BOOL)draw {
    drawDate = draw;
}

- (void)drawWithDate:(NSDate *)date {
    NSCalendarUnit comps = NSWeekdayCalendarUnit | NSDayCalendarUnit | NSMonthCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
    NSDateComponents *components = [[NSCalendar currentCalendar] components:comps fromDate:date];
    dayOfWeek = [components weekday] - 2; // map sun=1 to sun=-1
    
    CONVERT_DECIMAL([components month], dateDigit0, dateDigit1);
    CONVERT_DECIMAL([components day], dateDigit2, dateDigit3);
    CONVERT_DECIMAL([components hour], timeDigit0, timeDigit1);
    CONVERT_DECIMAL([components minute], timeDigit2, timeDigit3);
    CONVERT_DECIMAL([components second], timeDigit4, timeDigit5);
}

- (void)drawWithEye:(NSInteger)eyeIndex {
    eyeToDraw = eyeIndex;
}

- (void)drawInto:(NSView *)view {
    // Clear entire canvas
    CGRect size;
    size.size = fullSize;
    size.origin = NSZeroPoint;
    CGContextClearRect(drawContext, size);
    
    // Draw Speech Bubble
    size.size.width = CGImageGetWidth(bubbleGraphic);
    size.size.height = CGImageGetHeight(bubbleGraphic);
    size.origin.y = BUBBLE_Y_OFFSET;
    CGContextDrawImage(drawContext, size, bubbleGraphic);

    if (drawDate == YES) {
        // Draw Date
        size.size.width = FONT_SMALL_WIDTH;
        size.size.height = FONT_SMALL_HEIGHT;
        size.origin.y = FONT_SMALL_DATE_Y_OFFSET;
        if (dateDigit0 == 1) {
            size.origin.x = FONT_SMALL_DATE_X0_OFFSET;
            CGContextDrawImage(drawContext, size, fontSmall1);
        }
        if ((dateDigit1 >= 0) && (dateDigit1 <= 9)) {
            size.origin.x = FONT_SMALL_DATE_X1_OFFSET;
            CGContextDrawImage(drawContext, size, [self smallHelper:dateDigit1]);
        }
        if ((dateDigit2 >= 0) && (dateDigit2 <= 9)) {
            size.origin.x = FONT_SMALL_DATE_X2_OFFSET;
            CGContextDrawImage(drawContext, size, [self smallHelper:dateDigit2]);
        }
        if ((dateDigit3 >= 0) && (dateDigit3 <= 9)) {
            size.origin.x = FONT_SMALL_DATE_X3_OFFSET;
            CGContextDrawImage(drawContext, size, [self smallHelper:dateDigit3]);
        }

        // Draw Day of Week
        CGImageRef day = [self dayHelper:dayOfWeek];
        size.size.width = FONT_DAYS_WIDTH;
        size.size.height = FONT_DAYS_HEIGHT;
        size.origin.x = FONT_DAYS_X_OFFSET;
        size.origin.y = FONT_DAYS_Y_OFFSET;
        CGContextDrawImage(drawContext, size, day);
    } else {
        // Block unneeded date elements
        size.size.width = CGImageGetWidth(blankGraphic);
        size.size.height = CGImageGetHeight(blankGraphic);
        size.origin.x = BLANK_OFFSET_X;
        size.origin.y = BLANK_OFFSET_Y;
        CGContextDrawImage(drawContext, size, blankGraphic);
    }
    
    // Draw Time
    size.size.width = FONT_LARGE_WIDTH;
    size.size.height = FONT_LARGE_HEIGHT;
    size.origin.y = FONT_LARGE_Y_OFFSET;
    if ((timeDigit0 >= 0) && (timeDigit0 <= 9)) {
        size.origin.x = FONT_LARGE_X0_OFFSET;
        CGContextDrawImage(drawContext, size, [self largeHelper:timeDigit0]);
    }
    if ((timeDigit1 >= 0) && (timeDigit1 <= 9)) {
        size.origin.x = FONT_LARGE_X1_OFFSET;
        CGContextDrawImage(drawContext, size, [self largeHelper:timeDigit1]);
    }
    if ((timeDigit2 >= 0) && (timeDigit2 <= 9)) {
        size.origin.x = FONT_LARGE_X2_OFFSET;
        CGContextDrawImage(drawContext, size, [self largeHelper:timeDigit2]);
    }
    if ((timeDigit3 >= 0) && (timeDigit3 <= 9)) {
        size.origin.x = FONT_LARGE_X3_OFFSET;
        CGContextDrawImage(drawContext, size, [self largeHelper:timeDigit3]);
    }
    if ((timeDigit4 >= 0) && (timeDigit4 <= 9)) {
        size.origin.x = FONT_LARGE_X4_OFFSET;
        CGContextDrawImage(drawContext, size, [self largeHelper:timeDigit4]);
    }
    if ((timeDigit5 >= 0) && (timeDigit5 <= 9)) {
        size.origin.x = FONT_LARGE_X5_OFFSET;
        CGContextDrawImage(drawContext, size, [self largeHelper:timeDigit5]);
    }
    
    // Draw dots between hours, minutes and seconds
    if (timeDots == YES) {
        size.size.width = CGImageGetWidth(dotLargeGraphic);
        size.size.height = CGImageGetHeight(dotLargeGraphic);
        size.origin.y = DOTS_TIME_Y_OFFSET;
        size.origin.x = DOTS_TIME_X0_OFFSET;
        CGContextDrawImage(drawContext, size, dotLargeGraphic);
        size.origin.x = DOTS_TIME_X1_OFFSET;
        CGContextDrawImage(drawContext, size, dotLargeGraphic);
    }
    
    // Draw Alarm Graphic
    if (alarmSign == YES) {
        size.size.width = CGImageGetWidth(alarmGraphic);
        size.size.height = CGImageGetHeight(alarmGraphic);
        size.origin.x = ALARM_X_OFFSET;
        size.origin.y = ALARM_Y_OFFSET;
        CGContextDrawImage(drawContext, size, alarmGraphic);
    }
    
    // Draw dots between alarm hours and minutes
    if (alarmDots == YES) {
        size.size.width = CGImageGetWidth(dotSmallGraphic);
        size.size.height = CGImageGetHeight(dotSmallGraphic);
        size.origin.x = DOTS_ALARM_X_OFFSET;
        size.origin.y = DOTS_ALARM_Y_OFFSET;
        CGContextDrawImage(drawContext, size, dotSmallGraphic);
    }
    
    // Draw Alarm Time
    size.size.width = FONT_SMALL_WIDTH;
    size.size.height = FONT_SMALL_HEIGHT;
    size.origin.y = FONT_SMALL_ALARM_Y_OFFSET;
    if ((alarmDigit0 >= 0) && (alarmDigit0 <= 9)) {
        size.origin.x = FONT_SMALL_ALARM_X0_OFFSET;
        CGContextDrawImage(drawContext, size, [self smallHelper:alarmDigit0]);
    }
    if ((alarmDigit1 >= 0) && (alarmDigit1 <= 9)) {
        size.origin.x = FONT_SMALL_ALARM_X1_OFFSET;
        CGContextDrawImage(drawContext, size, [self smallHelper:alarmDigit1]);
    }
    if ((alarmDigit2 >= 0) && (alarmDigit2 <= 9)) {
        size.origin.x = FONT_SMALL_ALARM_X2_OFFSET;
        CGContextDrawImage(drawContext, size, [self smallHelper:alarmDigit2]);
    }
    if ((alarmDigit3 >= 0) && (alarmDigit3 <= 9)) {
        size.origin.x = FONT_SMALL_ALARM_X3_OFFSET;
        CGContextDrawImage(drawContext, size, [self smallHelper:alarmDigit3]);
    }
    
    // Draw Otacon
    size.size.width = CGImageGetWidth(otaconGraphic);
    size.size.height = CGImageGetHeight(otaconGraphic);
    size.origin = NSZeroPoint;
    size.origin.x = CGImageGetWidth(bubbleGraphic) + OTACON_X_OFFSET;
    CGContextDrawImage(drawContext, size, otaconGraphic);
    
    // Draw eyes
    size.size.width = CGImageGetWidth([self eyeHelper:eyeToDraw]);
    size.size.height = CGImageGetHeight([self eyeHelper:eyeToDraw]);
    size.origin.x = EYE_X_OFFSET;
    size.origin.y = EYE_Y_OFFSET;
    CGContextDrawImage(drawContext, size, [self eyeHelper:eyeToDraw]);
    
    // Render resulting canvas into bitmap and scale this into our window
    CGImageRef drawnImage = CGBitmapContextCreateImage(drawContext);
    NSImage *result = [[NSImage alloc] initWithCGImage:drawnImage size:fullSize];
    [result drawInRect:[view bounds] fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0 respectFlipped:NO hints:[NSDictionary dictionaryWithObject:[NSNumber numberWithInteger:NSImageInterpolationNone] forKey:NSImageHintInterpolation]];
    CGImageRelease(drawnImage);
}

@end