// Copyright 1991, 1994, 1997 Scott Hess.  Permission to use, copy,
// modify, and distribute this software and its documentation for
// any purpose and without fee is hereby granted, provided that
// this copyright notice appear in all copies.
// 
// Scott Hess makes no representations about the suitability of
// this software for any purpose.  It is provided "as is" without
// express or implied warranty.
//
#import <AppKit/AppKit.h>
#import "loadave.h"

typedef unsigned long long CPUTime[CPUSTATES];

@interface Percentages : NSObject
{
    CPUTime *oldTimes;		// The array of collected CPU times for
				// the previous lagFactor+layerFactor^2
				// time slices.
    int laIndex;		// Index into the array of collected values.
    int laSize;			// lagFactor+layerFactor^2
    int lagFactor;		// How long to average for the inner circle.
    int layerFactor;		// The factor that differentiates layers.
    unsigned steps;		// Number of steps we've done.
    float pcents[3][CPUSTATES];	// Percentages for display.
    float lpcents[3][CPUSTATES];// Last-displayed percentages.

    BOOL updateFlags[ 3];	// Which percentages to update.
    NSTimer *te;		// The timed entry keeping us alive.
    NSInvocation *selfStep;	// The invocation describing [self step]
    NSUserDefaults *defaults;
    id periodText;		// Period of the display.
    id lagText;			// Lag factore for the inner circle.
    id factorText;		// Factor between layers.
    id pauseMenuCell;		// To change when we pause/unpause.
    id colorFields;		// Fields that contain the color scheme.
    id readmeText;              // the readme text...
    NSImage *stipple;		// Icon background color stipple for NS3.0.
}

// Action methods
- (void)togglePause:(id)sender;
- (void)setPeriod:(id)sender;
- (void)setLag:(id)sender;
- (void)setFactor:(id)sender;

    // Update as indicated by updateFlags.
- (void)update;
    // Get new _cp_time and apply that data to percentages.
- (void)step;
    // Hook into initialization process of app.
- (void)applicationDidFinishLaunching:(NSNotification *)notification;
    // Pull out timed entries and stuff.
- (BOOL)applicationShouldTerminate:(id)sender;
- (void)display;

@end