DockIconCounter - CocoaDev

How do you have that little image by the icon, like in Mail?

I don’t know how the question was aimed at, but I’m pretty sure its an NSBezierPath as a circle in red with a 2 in it. Well, at least thats what I do. – MatPeterson

Actually, I believe it’s an image from within the bundle, with the text applied to it. As for how you apply it to the dock icon, I really don’t recall; you might begin looking in NSApplication’s documentation. – RobRix

Executive summary of the example code below:

Create an NSImage of your icon and overlay that number image on top of it
Use NSApplication’s setApplicationIconImage: to put that icon into the dock
PROFIT!

Also see BezierPathForDockIconCountBadge

Controller Header

#import <Cocoa/Cocoa.h>

@interface IconImageCounterController : NSObject { NSImage *iconImageBuffer; NSImage *originalIcon; NSTimer *timer; NSDictionary *attributes; int count; }

(void)drawCountdownIcon:(int)number;
(void)timerAction:(NSTimer *)_timer; @end

Controller Source

#import “IconImageCounterController.h”

@implementation IconImageCounterController

(void)awakeFromNib { if (timer) return; originalIcon = [[NSApp applicationIconImage] copy]; iconImageBuffer = [originalIcon copy]; timer = [[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timerAction:) userInfo:nil repeats:YES] retain]; attributes = [[NSDictionary alloc] initWithObjectsAndKeys: [NSFont fontWithName:@”Helvetica-Bold” size:26], NSFontAttributeName, [NSColor whiteColor], NSForegroundColorAttributeName, nil];

count = 20; }
(void)dealloc { [originalIcon release]; [iconImageBuffer release]; [attributes release]; [super dealloc]; }
(void)timerAction:(NSTimer *)_timer { if (count < 0 && timer == _timer) {[timer invalidate]; [timer release]; timer = nil; return;} [self drawCountdownIcon:count–];

}

(void)drawCountdownIcon:(int)number {

NSString *countdown = [NSString stringWithFormat:@”%i”, number]; NSSize numSize = [countdown sizeWithAttributes:attributes]; NSSize iconSize = [originalIcon size]; if (number) { [iconImageBuffer lockFocus]; [originalIcon drawAtPoint:NSMakePoint(0, 0) fromRect:NSMakeRect(0, 0, iconSize.width, iconSize.height) operation:NSCompositeSourceOver fraction:1.0f]; float max = (numSize.width > numSize.height) ? numSize.width : numSize.height; max += 16; NSRect circleRect = NSMakeRect(iconSize.width - max, iconSize.height - max, max, max); NSBezierPath *bp = [NSBezierPath bezierPathWithOvalInRect:circleRect]; [[NSColor colorWithCalibratedRed:0.8f green:0.0f blue:0.0f alpha:1.0f] set]; [bp fill]; [countdown drawAtPoint:NSMakePoint(NSMidX(circleRect) - numSize.width / 2.0f, NSMidY(circleRect) - numSize.height / 2.0f + 2.0f) withAttributes:attributes];
```
  [iconImageBuffer unlockFocus];
  [NSApp setApplicationIconImage:iconImageBuffer];   }   else [NSApp setApplicationIconImage:originalIcon];
```

}

– zootbobbalu

You Rock! -EcumeDesJours

I found a very nice implementation available free here: http://blog.oofn.net/2006/01/08/badging-for-everyone/ –GrahamCox

Here’s my implementation of a dock badge (like Acquisition’s): http://johndevor.wordpress.com/2007/01/17/dock-badging-is-fun/ –JohnDevor

If you’re using Leopard you can do the following:

[[NSApp dockTile] setBadgeLabel:@”1000”];

Check out the source of Transmission – http://www.transmissionbt.com/ , the files Badger and BadgerView, if you need to do custom badge work or support pre-leopard machines.

MatthieuCormier