MainController.m

   1 /*
   2  *      CPU History
   3  *      Christopher Bowns, 2008
   4  *
   5  *      Formerly: Memory Monitor, by Bernhard Baehr
   6  *
   7  *      Copyright © 2001-2003 Bernhard Baehr
   8  *
   9  *      MainController.m - Main Application Controller Class
  10  *
  11  *      This program is free software; you can redistribute it and/or modify
  12  *      it under the terms of the GNU General Public License as published by
  13  *      the Free Software Foundation; either version 2 of the License, or
  14  *      (at your option) any later version.
  15  *
  16  *      This program is distributed in the hope that it will be useful,
  17  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *      GNU General Public License for more details.
  20  *
  21  *      You should have received a copy of the GNU General Public License
  22  *      along with this program; if not, write to the Free Software
  23  *      Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  24  */
  25
  26
  27 #import "MainController.h"
  28
  29
  30 #define GRAPH_SIZE      128
  31 #define GRAPH_WIDTH     8
  32
  33 @implementation MainController
  34
  35
  36 - (void)drawImageOnWindow
  37 {
  38         [displayImage drawInRect:NSMakeRect(0, 0, NSWidth([window frame]), NSHeight([window frame]))
  39                 fromRect:NSMakeRect(0, 0, GRAPH_SIZE, GRAPH_SIZE) operation:NSCompositeCopy
  40                 fraction:1.0];
  41 }
  42
  43
  44 - (void)showHideWindow
  45 {
  46         float   size;
  47
  48         if ([[preferences objectForKey:SHOW_GRAPH_WINDOW_KEY] boolValue]) {
  49                 size = [[preferences objectForKey:GRAPH_WINDOW_SIZE_KEY] floatValue];
  50                 [window setContentSize:NSMakeSize(size, size)];
  51                 [window orderWindow:NSWindowBelow relativeTo:[preferences windowNumber]];
  52                 [window setLevel:([[preferences objectForKey:GRAPH_WINDOW_ON_TOP_KEY] boolValue] ?
  53                         NSFloatingWindowLevel : NSNormalWindowLevel)];
  54         } else
  55                 [window orderOut:self];
  56 }
  57
  58
  59 - (void)drawComplete
  60 // completely redraw graphImage, put graph into displayImage
  61 {
  62         CPUData                 cpudata;
  63
  64
  65         int                             x;
  66         float                   y, yy;
  67
  68         // double interval = 0.1 * [[preferences objectForKey:UPDATE_FREQUENCY_KEY] floatValue];
  69
  70         [graphImage lockFocus];
  71
  72         // draw the cpu usage graph
  73         [cpuInfo startIterate];
  74         // for (x = 0; [memInfo getNext:&vmdata]; x++) {
  75         for (x = 0; [cpuInfo getNext:&cpudata]; x+=GRAPH_WIDTH) {
  76
  77                 // y += vmdata.active * GRAPH_SIZE;
  78                 y = cpudata.sys * GRAPH_SIZE;
  79                 [[preferences objectForKey:ACTIVE_COLOR_KEY] set];
  80                 NSRectFill (NSMakeRect(x - GRAPH_WIDTH, 0.0, x, y));
  81                 yy = y;
  82                 // y += vmdata.inactive * GRAPH_SIZE;
  83                 y += cpudata.nice * GRAPH_SIZE;
  84                 [[preferences objectForKey:INACTIVE_COLOR_KEY] set];
  85                 NSRectFill (NSMakeRect(x - GRAPH_WIDTH, yy, x, y));
  86                 // y = vmdata.wired * GRAPH_SIZE;
  87                 yy = y;
  88
  89                 y += cpudata.user * GRAPH_SIZE;
  90                 [[preferences objectForKey:WIRED_COLOR_KEY] set];
  91                 NSRectFill (NSMakeRect(x - GRAPH_WIDTH, yy, x, y));
  92
  93                 // free data here
  94                 [[preferences objectForKey:FREE_COLOR_KEY] set];
  95                 NSRectFill (NSMakeRect(x - GRAPH_WIDTH, y, x, GRAPH_SIZE));
  96         }
  97
  98         // transfer graph image to icon image
  99         [graphImage unlockFocus];
 100         [displayImage lockFocus];
 101         [graphImage compositeToPoint:NSMakePoint(0.0, 0.0) operation:NSCompositeCopy];
 102
 103         [displayImage unlockFocus];
 104 }
 105
 106
 107 - (void)drawDelta
 108 // update graphImage (based on previous graphImage), put graph into displayImage
 109 {
 110         // VMData                       vmdata, vmdata0;
 111         CPUData                 cpudata, cpudata0;
 112         float                   y, yy;
 113
 114         // double interval = 0.1 * [[preferences objectForKey:UPDATE_FREQUENCY_KEY] floatValue];
 115
 116         [graphImage lockFocus];
 117
 118         // offset the old graph image
 119         [graphImage compositeToPoint:NSMakePoint(-GRAPH_WIDTH, 0) operation:NSCompositeCopy];
 120
 121         // [memInfo getLast:&vmdata0];
 122         [cpuInfo getLast:&cpudata0];
 123         // [memInfo getCurrent:&vmdata];
 124         [cpuInfo getCurrent:&cpudata];
 125
 126         // draw chronological graph into graph image
 127
 128         // y += vmdata.active * GRAPH_SIZE;
 129         y = cpudata.sys * GRAPH_SIZE;
 130         [[preferences objectForKey:ACTIVE_COLOR_KEY] set];
 131         NSRectFill (NSMakeRect(GRAPH_SIZE - GRAPH_WIDTH, 0.0, GRAPH_SIZE - GRAPH_WIDTH, y));
 132         yy = y;
 133
 134         // y += vmdata.inactive * GRAPH_SIZE;
 135         y += cpudata.nice * GRAPH_SIZE;
 136         [[preferences objectForKey:INACTIVE_COLOR_KEY] set];
 137         NSRectFill (NSMakeRect(GRAPH_SIZE - GRAPH_WIDTH, yy, GRAPH_SIZE - GRAPH_WIDTH, y));
 138         yy = y;
 139
 140         // y = vmdata.wired * GRAPH_SIZE;
 141         y += cpudata.user * GRAPH_SIZE;
 142         [[preferences objectForKey:WIRED_COLOR_KEY] set];
 143         NSRectFill (NSMakeRect(GRAPH_SIZE - GRAPH_WIDTH, yy, GRAPH_SIZE - GRAPH_WIDTH, y));
 144
 145         // free data here
 146         [[preferences objectForKey:FREE_COLOR_KEY] set];
 147         NSRectFill (NSMakeRect(GRAPH_SIZE - GRAPH_WIDTH, y, GRAPH_SIZE - GRAPH_WIDTH, GRAPH_SIZE));
 148
 149
 150         // transfer graph image to icon image
 151         [graphImage unlockFocus];
 152         [displayImage lockFocus];
 153         [graphImage compositeToPoint:NSMakePoint(0.0, 0.0) operation:NSCompositeCopy];
 154
 155         [displayImage unlockFocus];
 156 }
 157
 158
 159 - (void)setApplicationIcon
 160 // set the (scaled) application icon
 161 {
 162         float inc = GRAPH_SIZE * (1.0 - [[preferences objectForKey:DOCK_ICON_SIZE_KEY] floatValue]); // icon scaling
 163         [iconImage lockFocus];
 164         [displayImage drawInRect:NSMakeRect(inc, inc, GRAPH_SIZE - 2 * inc, GRAPH_SIZE - 2 * inc) fromRect:NSMakeRect(0, 0, GRAPH_SIZE, GRAPH_SIZE) operation:NSCompositeCopy fraction:1.0];
 165         [iconImage unlockFocus];
 166         [NSApp setApplicationIconImage:iconImage];
 167 }
 168
 169
 170 - (void)refreshGraph
 171 // get a new sample and refresh the graph
 172 {
 173         // [memInfo refresh];
 174         [cpuInfo refresh];
 175         [self drawDelta];
 176         [self setApplicationIcon];
 177
 178         if ([[preferences objectForKey:SHOW_GRAPH_WINDOW_KEY] boolValue]) {
 179                 [window disableFlushWindow];
 180                 [view display];
 181                 [window enableFlushWindow];
 182                 [window flushWindow];
 183         }
 184 }
 185
 186
 187 - (void)updateGraph
 188 // completely redraw the graph (to show new preferences settings)
 189 {
 190         [self drawComplete];
 191         [iconImage lockFocus];
 192         [[NSColor clearColor] set];
 193         NSRectFill (NSMakeRect(0, 0, GRAPH_SIZE, GRAPH_SIZE));
 194         [iconImage unlockFocus];
 195         [self setApplicationIcon];
 196
 197         if ([[preferences objectForKey:SHOW_GRAPH_WINDOW_KEY] boolValue]) {
 198                 [window disableFlushWindow];
 199                 [view display];
 200                 [window enableFlushWindow];
 201                 [window flushWindow];
 202         }
 203 }
 204
 205
 206 - (void)setTimer
 207 {
 208         double newInterval = 0.1 * [[preferences objectForKey:UPDATE_FREQUENCY_KEY] floatValue];
 209
 210         if (timer) {
 211                 if (fabs([timer timeInterval] - newInterval) < 0.001)
 212                         return;         /* frequency not changed */
 213                 [timer invalidate];
 214                 [timer release];
 215         }
 216         timer = [NSTimer scheduledTimerWithTimeInterval:newInterval
 217                 target:self selector:@selector(refreshGraph) userInfo:nil repeats:YES];
 218         [timer retain];
 219 }
 220
 221
 222 - (void)showPreferences:(id)sender
 223 {
 224         [NSApp activateIgnoringOtherApps:YES];  /* activate application when called from Dock menu */
 225         [preferences showPreferences:self];
 226 }
 227
 228
 229 - (void)showAboutBox:(id)sender
 230 {
 231         [NSApp activateIgnoringOtherApps:YES];  /* activate application when called from Dock menu */
 232         [NSApp orderFrontStandardAboutPanel:sender];
 233 }
 234
 235
 236 - (BOOL)isLoginItem
 237 {
 238         id      obj;
 239
 240         NSString *cpuHistoryPath = [[NSBundle mainBundle] bundlePath];
 241         NSDictionary *loginItemDict = [NSDictionary dictionaryWithContentsOfFile:[NSString stringWithFormat:@"%@/Library/Preferences/loginwindow.plist", NSHomeDirectory()]];
 242         NSEnumerator *loginItemEnumerator = [[loginItemDict objectForKey:@"AutoLaunchedApplicationDictionary"] objectEnumerator];
 243
 244         while ((obj = [loginItemEnumerator nextObject])) {
 245                 if ([[obj objectForKey:@"Path"] isEqualTo:cpuHistoryPath])
 246                         return (YES);
 247         }
 248         return (NO);
 249 }
 250
 251
 252 - (unsigned)systemVersion
 253 // returns the system version normally retrieved with Gestalt(gestaltSystemVersion, &systemVersion)
 254 {
 255         const char      *p;
 256
 257         unsigned version = 0;
 258
 259         for (p = [[[NSDictionary dictionaryWithContentsOfFile:@"/System/Library/CoreServices/SystemVersion.plist"]
 260                 objectForKey:@"ProductVersion"] cString]; *p; p++) {
 261                 if (*p != '.')
 262                         version = (version << 4) | (*p - '0');
 263         }
 264         if (version < 0x1000)   // for 10.0, 10.1
 265                 version <<= 4;
 266         return (version);
 267 }
 268
 269
 270 - (BOOL)updateFrameName
 271 // calculate the frameName used to save the window position; return TRUE iff the name changed,
 272 // i. e. the display configuration changed since last call of this method
 273 {
 274         NSRect          rect;
 275         NSScreen        *screen;
 276         BOOL            nameDidChange;
 277
 278         NSString *string = @"CHWL";     // CPUHistoryWindowLocation
 279         NSEnumerator *enumerator = [[NSScreen screens] objectEnumerator];
 280
 281         while ((screen = [enumerator nextObject])) {
 282                 rect = [screen frame];
 283                 string = [string
 284                         stringByAppendingString:[NSString stringWithFormat:@"%.0f%.0f%.0f%.0f",
 285                         rect.origin.x, rect.origin.y, rect.size.width, rect.size.height]];
 286         }
 287         nameDidChange = ! [string isEqualToString:frameName];
 288         [frameName release];
 289         frameName = string;
 290         [frameName retain];
 291         return (nameDidChange);
 292 }
 293
 294
 295 - (void)applicationDidFinishLaunching:(NSNotification *)notification
 296 {
 297         preferences = [[Preferences alloc] init];
 298         // memInfo = [[MemInfo alloc] initWithCapacity:GRAPH_SIZE];
 299         cpuInfo = [[CPUInfo alloc] initWithCapacity:GRAPH_SIZE];
 300         if (nil == cpuInfo) //then we need to bomb out. We can't go anywhere from here.
 301         {
 302                 NSLog(@"%s failed to create CPUInfo object! App will crash in a minute. This is unavoidable until we learn how to gracefully exit.", _cmd);
 303                 /*
 304                         TODO appDidFinishLaunching: error on creating cpuInfo obj: shut down the app gracefully. Display error message?
 305                 */
 306         }
 307
 308         displayImage = [[NSImage allocWithZone:[self zone]] initWithSize:NSMakeSize(GRAPH_SIZE, GRAPH_SIZE)];
 309         graphImage = [[NSImage allocWithZone:[self zone]] initWithSize:NSMakeSize(GRAPH_SIZE, GRAPH_SIZE)];
 310         iconImage = [[NSImage allocWithZone:[self zone]] initWithSize:NSMakeSize(GRAPH_SIZE, GRAPH_SIZE)];
 311         [self drawComplete];
 312
 313         window = [[TranslucentWindow allocWithZone:[self zone]]
 314                 initWithContentRect:NSMakeRect(0.0, 0.0, GRAPH_SIZE, GRAPH_SIZE)
 315                 styleMask:NSBorderlessWindowMask backing:NSBackingStoreBuffered defer:NO];
 316         [window setReleasedWhenClosed:NO];
 317         [window setBackgroundColor:[NSColor clearColor]];
 318         [self updateFrameName];
 319         if (! [window setFrameUsingName:frameName]) {
 320                 // for compatibility with version 1.1 preferences file
 321                 [window setFrameUsingName:@"CPUHistoryWindowLocation"];
 322                 [NSWindow removeFrameUsingName:@"CPUHistoryWindowLocation"];
 323                 [window saveFrameUsingName:frameName];
 324         }
 325         [window setDelegate:self];
 326
 327         view = [[TranslucentView allocWithZone:[self zone]] initWithFrame:NSMakeRect(0.0, 0.0, GRAPH_SIZE, GRAPH_SIZE)];
 328         [window setContentView:view];
 329         [view setContentDrawer:self method:@selector(drawImageOnWindow)];
 330         [view setAutoresizingMask:(NSViewHeightSizable | NSViewWidthSizable)];
 331         [view setToolTip:@"CPU History"];
 332
 333
 334         [self showHideWindow];
 335
 336         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showHideWindow) name:PREFERENCES_CHANGED object:nil];
 337         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateGraph) name:PREFERENCES_CHANGED object:nil];
 338         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(setTimer) name:PREFERENCES_CHANGED object:nil];
 339
 340         if ([self systemVersion] < 0x1010 && [self isLoginItem])
 341                 [NSTimer scheduledTimerWithTimeInterval:30 target:self selector:@selector(setTimer) userInfo:nil repeats:NO];
 342         else
 343                 [self setTimer];
 344 }
 345
 346
 347 - (void)applicationWillTerminate:(NSNotification *)aNotification
 348 {
 349         if (timer) {
 350                 [timer invalidate];
 351                 [timer release];
 352                 timer = nil;
 353         }
 354         [preferences savePreferences];
 355         [NSApp setApplicationIconImage:[NSImage imageNamed:@"CPUHistory.icns"]];
 356 }
 357
 358
 359 - (void)applicationDidChangeScreenParameters:(NSNotification *)aNotification
 360 {
 361         [self updateFrameName];
 362         [window setFrameUsingName:frameName];
 363 }
 364
 365
 366 - (void)windowDidMove:(NSNotification *)aNotification
 367 {
 368         if (! [self updateFrameName])
 369                 [window saveFrameUsingName:frameName];
 370 }
 371
 372
 373 @end