I noticed that the current star rating level indicator style really sucks. So I took it upon myself to make a custom star rater. You can easily change around the images, and size (you have to do this in the .m file though.) The images that come with it look nice for a polished (or unified as some people call it) window like in iTunes.

PWLevelIndicator source preview

#import "PWLevelIndicator.h"

@implementation PWLevelIndicatorCell


- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView{

unsigned starCount = (unsigned)roundf([self floatValue]);

NSSize starSize = cellFrame.size;
starSize.width /= 5.0;

[starImg setSize:starSize];
[dotImg setSize:starSize];

NSRect starRect = NSMakeRect(0.0, 0.0, starSize.width, starSize.height);
NSRect imgRect = starRect;

if (starCount) {
unsigned starIndex;
for (starIndex = 0; starIndex < starCount; starIndex++) {
starRect.origin.x = starIndex * starSize.width;
[starImg drawInRect:starRect fromRect:imgRect operation:NSCompositeSourceOver fraction:1.0];
}
}
if ( (starCount < 5) ) {

unsigned starIndex;
for (starIndex = starCount; starIndex < 5; starIndex++) {
starRect.origin.x = starIndex * starSize.width;
[dotImg drawAtPoint:starRect.origin fromRect:imgRect operation:NSCompositeSourceOver fraction:1.0];
}
}
}

-(void)setImage:(NSImage *)image{
if (starImg != image) {
if (starImg != nil) [starImg release];
starImg = [image copy];
[starImg setScalesWhenResized:YES];
}
}

-(void)setDotImage:(NSImage *)dotImage{
if (dotImg != dotImage) {
if (dotImg != nil) [dotImg release];
dotImg = [dotImage copy];
[dotImg setScalesWhenResized:YES];
}
}

- (void) dealloc {
if (starImg != nil) [starImg release];
if (dotImg != nil) [dotImg release];
[super dealloc];
}

@end

@implementation PWLevelIndicator


+ (Class)cellClass{
return [PWLevelIndicatorCell class];
}

- (id) initWithCoder:(NSCoder *)aDecoder{
self = [super initWithCoder:aDecoder];
if (self != nil) {
[self setCell:[[[PWLevelIndicatorCell alloc] initWithLevelIndicatorStyle:NSRatingLevelIndicatorStyle] autorelease]];
NSRect liFrame = [self frame];
liFrame.size.width = 90.0; // new width
liFrame.size.height = 17.0; // new height
[self setFrame:liFrame];
[[self cell] setImage:[NSImage imageNamed:@"star_on.png"]];
[[self cell] setDotImage:[NSImage imageNamed:@"star_off.png"]];
}
return self;

}

- (id) initWithFrame:(NSRect)frameRect {
self = [super initWithFrame:frameRect];
if (self != nil) {
[self setCell:[[[PWLevelIndicatorCell alloc] initWithLevelIndicatorStyle:NSRatingLevelIndicatorStyle] autorelease]];
[[self cell] setImage:[NSImage imageNamed:@"star_on.png"]];
[[self cell] setDotImage:[NSImage imageNamed:@"star_off.png"]];
}
return self;
}


@end

PWLevelIndicator header preview

/* PWLevelIndicator.h */

#import <Cocoa/Cocoa.h>

@interface PWLevelIndicatorCell : NSLevelIndicatorCell{
NSImage *starImg;
NSImage *dotImg;
}

-(void)setDotImage:(NSImage *)dotImage;

@end

@interface PWLevelIndicator : NSLevelIndicator{
}
@end

Compatible with:

• Mac OS X 10.4 PPC
• Mac OS X 10.4 Intel

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