Initial import of Cocoa code

cocoa/CurrentCostView.m

@@ -0,0 +1,111 @@
+//
+//  CurrentCostView.m
+//  Current Cost
+//
+//  Created by Neil on 05/12/2008.
+//  Copyright 2008 Neil Cowburn. All rights reserved.
+//
+
+#import "CurrentCostView.h"
+
+@interface CurrentCostView ()
+
+- (void)drawStringCenteredIn:(NSRect)rect;
+- (void)prepareAttributes;
+
+@end
+
+@implementation CurrentCostView
+
+@synthesize watts, temp, time;
+
+- (id)initWithFrame:(NSRect)rect 
+{
+	if (![super initWithFrame:rect]) {
+		return nil;
+	}
+	
+	[self prepareAttributes];
+	watts = @"";
+	time = @"00:00";
+	temp = @"0˚C";
+	
+	return self;
+}
+
+- (void)dealloc
+{
+	[watts release];
+	[temp release];
+	[time release];
+	[attributes release];
+	
+	[super dealloc];
+}
+
+- (void)drawRect:(NSRect)rect
+{
+	NSRect bounds = [self bounds];
+	[[NSColor whiteColor] set];
+	[self drawStringCenteredIn:bounds];
+	
+	if (([[self window] firstResponder] == self) && [NSGraphicsContext currentContextDrawingToScreen]) {
+		[NSGraphicsContext saveGraphicsState];
+		NSSetFocusRingStyle(NSFocusRingOnly);
+		[NSBezierPath fillRect:bounds];
+		[NSGraphicsContext restoreGraphicsState];
+	}
+	
+}
+
+- (BOOL)isOpaque
+{
+	return NO;
+}
+
+- (void)setWatts:(NSString *)power
+{
+	power = [power copy];
+	[watts release];
+	watts = power;
+	
+	[self setNeedsDisplay:YES];
+}
+
+
+- (BOOL)acceptsFirstResponder
+{
+	return NO;
+}
+
+- (BOOL)resignFirstResponder
+{
+	[self setNeedsDisplay:YES];
+	return NO;
+}
+
+- (BOOL)becomeFirstResponder
+{
+	[self setNeedsDisplay:YES];
+	return NO;
+}
+
+- (void)drawStringCenteredIn:(NSRect)rect
+{
+	NSSize wattsSize = [watts sizeWithAttributes:attributes];
+	
+	NSPoint origin;
+	origin.x = rect.origin.x + (rect.size.width - wattsSize.width) / 2;
+	origin.y = rect.origin.y + (rect.size.height - wattsSize.height) / 2;
+	
+	[watts drawAtPoint:origin withAttributes:attributes];
+}
+
+- (void)prepareAttributes
+{
+	attributes = [[NSMutableDictionary alloc] init];
+	[attributes setObject:[NSFont fontWithName:@"Helvetica" size:30] forKey:NSFontAttributeName];
+	[attributes setObject:[NSColor blackColor] forKey:NSForegroundColorAttributeName];
+}
+
+@end