git.sesse.net Git - vlc/blob - modules/gui/macosx/fspanel.m

   1 /*****************************************************************************
   2  * fspanel.m: MacOS X full screen panel
   3  *****************************************************************************
   4  * Copyright (C) 2006-2008 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Jérôme Decoodt <djc at videolan dot org>
   8  *          Felix Paul Kühne <fkuehne at videolan dot org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #import "intf.h"
  29 #import "controls.h"
  30 #import "vout.h"
  31 #import "misc.h"
  32 #import "fspanel.h"
  33
  34 /*****************************************************************************
  35  * VLCFSPanel
  36  *****************************************************************************/
  37 @implementation VLCFSPanel
  38 /* We override this initializer so we can set the NSBorderlessWindowMask styleMask, and set a few other important settings */
  39 - (id)initWithContentRect:(NSRect)contentRect
  40                 styleMask:(unsigned int)aStyle
  41                   backing:(NSBackingStoreType)bufferingType
  42                     defer:(BOOL)flag
  43 {
  44     id win = [super initWithContentRect:contentRect styleMask:NSTexturedBackgroundWindowMask backing:bufferingType defer:flag];
  45     [win setOpaque:NO];
  46     [win setHasShadow: NO];
  47     [win setBackgroundColor:[NSColor clearColor]];
  48
  49     /* let the window sit on top of everything else and start out completely transparent */
  50     [win setLevel:NSModalPanelWindowLevel];
  51     i_device = 0;
  52     [win center];
  53     [self setNonActive:nil];
  54
  55     return win;
  56 }
  57
  58 - (void)awakeFromNib
  59 {
  60     [self setContentView:[[VLCFSPanelView alloc] initWithFrame: [self frame]]];
  61     BOOL isInside = (NSPointInRect([NSEvent mouseLocation],[self frame]));
  62     [[self contentView] addTrackingRect:[[self contentView] bounds] owner:self userData:nil assumeInside:isInside];
  63     if (isInside)
  64         [self mouseEntered:NULL];
  65     if (!isInside)
  66         [self mouseExited:NULL];
  67
  68     /* get a notification if VLC isn't the active app anymore */
  69     [[NSNotificationCenter defaultCenter]
  70     addObserver: self
  71        selector: @selector(setNonActive:)
  72            name: NSApplicationDidResignActiveNotification
  73          object: NSApp];
  74
  75     /* get a notification if VLC is the active app again */
  76     [[NSNotificationCenter defaultCenter]
  77     addObserver: self
  78        selector: @selector(setActive:)
  79            name: NSApplicationDidBecomeActiveNotification
  80          object: NSApp];
  81 }
  82
  83 /* Windows created with NSBorderlessWindowMask normally can't be key, but we want ours to be */
  84 - (BOOL)canBecomeKeyWindow
  85 {
  86     return YES;
  87 }
  88
  89 - (BOOL)mouseDownCanMoveWindow
  90 {
  91     return YES;
  92 }
  93
  94 -(void)dealloc
  95 {
  96     [[NSNotificationCenter defaultCenter] removeObserver: self];
  97
  98     if( hideAgainTimer )
  99         [hideAgainTimer release];
 100     [self setFadeTimer:nil];
 101     [super dealloc];
 102 }
 103
 104 -(void)center
 105 {
 106     /* centre the panel in the lower third of the screen */
 107     NSPoint theCoordinate;
 108     NSRect theScreensFrame;
 109     NSRect theWindowsFrame;
 110     NSScreen *screen;
 111
 112     /* user-defined screen */
 113     screen = [NSScreen screenWithDisplayID: (CGDirectDisplayID)i_device];
 114
 115     if (!screen)
 116     {
 117         /* invalid preferences or none specified, using main screen */
 118         screen = [NSScreen mainScreen];
 119     }
 120
 121     theScreensFrame = [screen frame];
 122
 123     theWindowsFrame = [self frame];
 124
 125     theCoordinate.x = (theScreensFrame.size.width - theWindowsFrame.size.width) / 2 + theScreensFrame.origin.x;
 126     theCoordinate.y = (theScreensFrame.size.height / 3) - theWindowsFrame.size.height + theScreensFrame.origin.y;
 127     [self setFrameTopLeftPoint: theCoordinate];
 128 }
 129
 130 - (void)setPlay
 131 {
 132     [[self contentView] setPlay];
 133 }
 134
 135 - (void)setPause
 136 {
 137     [[self contentView] setPause];
 138 }
 139
 140 - (void)setStreamTitle:(NSString *)o_title
 141 {
 142     [[self contentView] setStreamTitle: o_title];
 143 }
 144
 145 - (void)setStreamPos:(float) f_pos andTime:(NSString *)o_time
 146 {
 147     [[self contentView] setStreamPos:f_pos andTime: o_time];
 148 }
 149
 150 - (void)setSeekable:(BOOL) b_seekable
 151 {
 152     [[self contentView] setSeekable: b_seekable];
 153 }
 154
 155 - (void)setVolumeLevel: (float)f_volumeLevel
 156 {
 157     [[self contentView] setVolumeLevel: f_volumeLevel];
 158 }
 159
 160 - (void)setNonActive:(id)noData
 161 {
 162     b_nonActive = YES;
 163     [self orderOut: self];
 164
 165     /* here's fadeOut, just without visibly fading */
 166     b_displayed = NO;
 167     [self setAlphaValue:0.0];
 168     [self setFadeTimer:nil];
 169     b_fadeQueued = NO;
 170 }
 171
 172 - (void)setActive:(id)noData
 173 {
 174     if( [[[[VLCMain sharedInstance] getControls] getVoutView] isFullscreen] )
 175     {
 176         b_nonActive = NO;
 177         [self fadeIn];
 178     }
 179 }
 180
 181 /* This routine is called repeatedly to fade in the window */
 182 - (void)focus:(NSTimer *)timer
 183 {
 184     /* we need to push ourselves to front if the vout window was closed since our last display */
 185     if( b_voutWasUpdated )
 186     {
 187         [self orderFront: self];
 188         b_voutWasUpdated = NO;
 189     }
 190
 191     if( [self alphaValue] < 1.0 )
 192         [self setAlphaValue:[self alphaValue]+0.1];
 193     if( [self alphaValue] >= 1.0 )
 194     {
 195         b_displayed = YES;
 196         [self setAlphaValue: 1.0];
 197         [self setFadeTimer:nil];
 198         if( b_fadeQueued )
 199         {
 200             b_fadeQueued=NO;
 201             [self setFadeTimer:[NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(unfocus:) userInfo:NULL repeats:YES]];
 202         }
 203     }
 204 }
 205
 206 /* This routine is called repeatedly to hide the window */
 207 - (void)unfocus:(NSTimer *)timer
 208 {
 209     if( b_keptVisible )
 210     {
 211         b_keptVisible = NO;
 212         b_fadeQueued = NO;
 213         [self setFadeTimer: NULL];
 214         [self fadeIn];
 215         return;
 216     }
 217     if( [self alphaValue] > 0.0 )
 218         [self setAlphaValue:[self alphaValue]-0.05];
 219     if( [self alphaValue] <= 0.05 )
 220     {
 221         b_displayed = NO;
 222         [self setAlphaValue:0.0];
 223         [self setFadeTimer:nil];
 224         if( b_fadeQueued )
 225         {
 226             b_fadeQueued=NO;
 227             [self setFadeTimer:
 228                 [NSTimer scheduledTimerWithTimeInterval:0.1
 229                                                  target:self
 230                                                selector:@selector(focus:)
 231                                                userInfo:NULL
 232                                                 repeats:YES]];
 233         }
 234     }
 235 }
 236
 237 - (void)mouseExited:(NSEvent *)theEvent
 238 {
 239     /* give up our focus, so the vout may show us again without letting the user clicking it */
 240     if( [[[[VLCMain sharedInstance] getControls] getVoutView] isFullscreen] )
 241         [[[[[VLCMain sharedInstance] getControls] getVoutView] window] makeKeyWindow];
 242 }
 243
 244 - (void)fadeIn
 245 {
 246     /* in case that the user don't want us to appear, just return here */
 247     if(! config_GetInt( VLCIntf, "macosx-fspanel" ) || b_nonActive )
 248         return;
 249
 250     [self orderFront: nil];
 251
 252     if( [self alphaValue] < 1.0 || b_displayed != YES )
 253     {
 254         if (![self fadeTimer])
 255             [self setFadeTimer:[NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(focus:) userInfo:[NSNumber numberWithShort:1] repeats:YES]];
 256         else if ([[[self fadeTimer] userInfo] shortValue]==0)
 257             b_fadeQueued=YES;
 258     }
 259     [self autoHide];
 260 }
 261
 262 - (void)fadeOut
 263 {
 264     if( NSPointInRect([NSEvent mouseLocation],[self frame]))
 265         return;
 266
 267     if( ( [self alphaValue] > 0.0 ) )
 268     {
 269         if (![self fadeTimer])
 270             [self setFadeTimer:[NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(unfocus:) userInfo:[NSNumber numberWithShort:0] repeats:YES]];
 271         else if ([[[self fadeTimer] userInfo] shortValue]==1)
 272             b_fadeQueued=YES;
 273     }
 274 }
 275
 276 /* triggers a timer to autoHide us again after some seconds of no activity */
 277 - (void)autoHide
 278 {
 279     /* this will tell the timer to start over again or to start at all */
 280     b_keptVisible = YES;
 281
 282     /* get us a valid timer */
 283     if(! b_alreadyCounting )
 284     {
 285         i_timeToKeepVisibleInSec = config_GetInt( VLCIntf, "mouse-hide-timeout" ) / 500;
 286         hideAgainTimer = [NSTimer scheduledTimerWithTimeInterval: 0.5
 287                                                           target: self
 288                                                         selector: @selector(keepVisible:)
 289                                                         userInfo: nil
 290                                                          repeats: YES];
 291         [hideAgainTimer fire];
 292         [hideAgainTimer retain];
 293         b_alreadyCounting = YES;
 294     }
 295 }
 296
 297 - (void)keepVisible:(NSTimer *)timer
 298 {
 299     /* if the user triggered an action, start over again */
 300     if( b_keptVisible )
 301         b_keptVisible = NO;
 302
 303     /* count down until we hide ourselfes again and do so if necessary */
 304     i_timeToKeepVisibleInSec -= 1;
 305     if( i_timeToKeepVisibleInSec < 1 )
 306     {
 307         [NSCursor setHiddenUntilMouseMoves: YES];
 308         [self fadeOut];
 309         [timer invalidate];
 310         [timer release];
 311         b_alreadyCounting = NO;
 312         timer = NULL;
 313     }
 314 }
 315
 316 /* A getter and setter for our main timer that handles window fading */
 317 - (NSTimer *)fadeTimer
 318 {
 319     return fadeTimer;
 320 }
 321
 322 - (void)setFadeTimer:(NSTimer *)timer
 323 {
 324     [timer retain];
 325     [fadeTimer invalidate];
 326     [fadeTimer release];
 327     fadeTimer=timer;
 328 }
 329
 330 - (void)mouseDown:(NSEvent *)theEvent
 331 {
 332     mouseClic = [theEvent locationInWindow];
 333 }
 334
 335 - (void)mouseDragged:(NSEvent *)theEvent
 336 {
 337     NSPoint point = [NSEvent mouseLocation];
 338     point.x -= mouseClic.x;
 339     point.y -= mouseClic.y;
 340     [self setFrameOrigin:point];
 341 }
 342
 343 - (BOOL)isDisplayed
 344 {
 345     return b_displayed;
 346 }
 347
 348 - (void)setVoutWasUpdated: (int)i_newdevice;
 349 {
 350     b_voutWasUpdated = YES;
 351     if( i_newdevice != i_device )
 352     {
 353         i_device = i_newdevice;
 354         [self center];
 355     }
 356 }
 357 @end
 358
 359 /*****************************************************************************
 360  * FSPanelView
 361  *****************************************************************************/
 362 @implementation VLCFSPanelView
 363
 364 #define addButton( o_button, imageOff, imageOn, _x, _y, action )                                \
 365     s_rc.origin.x = _x;                                                                         \
 366     s_rc.origin.y = _y;                                                                         \
 367     o_button = [[NSButton alloc] initWithFrame: s_rc];                                 \
 368     [o_button setButtonType: NSMomentaryChangeButton];                                          \
 369     [o_button setBezelStyle: NSRegularSquareBezelStyle];                                        \
 370     [o_button setBordered: NO];                                                                 \
 371     [o_button setFont:[NSFont systemFontOfSize:0]];                                             \
 372     [o_button setImage:[NSImage imageNamed:imageOff]];                                 \
 373     [o_button setAlternateImage:[NSImage imageNamed:imageOn]];                         \
 374     [o_button sizeToFit];                                                                       \
 375     [o_button setTarget: self];                                                                 \
 376     [o_button setAction: @selector(action:)];                                                   \
 377     [self addSubview:o_button];
 378
 379 #define addTextfield( o_text, align, font, color, size )                                    \
 380     o_text = [[NSTextField alloc] initWithFrame: s_rc];                            \
 381     [o_text setDrawsBackground: NO];                                                        \
 382     [o_text setBordered: NO];                                                               \
 383     [o_text setEditable: NO];                                                               \
 384     [o_text setSelectable: NO];                                                             \
 385     [o_text setStringValue: _NS("(no item is being played)")];                                                    \
 386     [o_text setAlignment: align];                                                           \
 387     [o_text setTextColor: [NSColor color]];                                                 \
 388     [o_text setFont:[NSFont font:[NSFont smallSystemFontSize] - size]];                     \
 389     [self addSubview:o_text];
 390
 391 - (id)initWithFrame:(NSRect)frameRect
 392 {
 393     id view = [super initWithFrame:frameRect];
 394     fillColor = [[NSColor clearColor] retain];
 395     NSRect s_rc = [self frame];
 396     addButton( o_prev, @"fs_skip_previous" , @"fs_skip_previous_highlight", 174, 15, prev );
 397     addButton( o_bwd, @"fs_rewind"        , @"fs_rewind_highlight"       , 211, 14, backward );
 398     addButton( o_play, @"fs_play"          , @"fs_play_highlight"         , 267, 10, play );
 399     addButton( o_fwd, @"fs_forward"       , @"fs_forward_highlight"      , 313, 14, forward );
 400     addButton( o_next, @"fs_skip_next"     , @"fs_skip_next_highlight"    , 365, 15, next );
 401     addButton( o_fullscreen, @"fs_exit_fullscreen", @"fs_exit_fullscreen_hightlight", 507, 13, windowAction );
 402 /*
 403     addButton( o_button, @"image (off state)", @"image (on state)", 38, 51, something );
 404  */
 405
 406     /* time slider */
 407     s_rc = [self frame];
 408     s_rc.origin.x = 15;
 409     s_rc.origin.y = 53;
 410     s_rc.size.width = 518;
 411     s_rc.size.height = 9;
 412     o_fs_timeSlider = [[VLCFSTimeSlider alloc] initWithFrame: s_rc];
 413     [o_fs_timeSlider setMinValue:0];
 414     [o_fs_timeSlider setMaxValue:10000];
 415     [o_fs_timeSlider setFloatValue: 0];
 416     [o_fs_timeSlider setContinuous: YES];
 417     [o_fs_timeSlider setTarget: self];
 418     [o_fs_timeSlider setAction: @selector(fsTimeSliderUpdate:)];
 419     [self addSubview: o_fs_timeSlider];
 420
 421     /* volume slider */
 422     s_rc = [self frame];
 423     s_rc.origin.x = 26;
 424     s_rc.origin.y = 17.5;
 425     s_rc.size.width = 95;
 426     s_rc.size.height = 10;
 427     o_fs_volumeSlider = [[VLCFSVolumeSlider alloc] initWithFrame: s_rc];
 428     [o_fs_volumeSlider setMinValue:0];
 429     [o_fs_volumeSlider setMaxValue:32];
 430     [o_fs_volumeSlider setFloatValue: 0];
 431     [o_fs_volumeSlider setContinuous: YES];
 432     [o_fs_volumeSlider setTarget: self];
 433     [o_fs_volumeSlider setAction: @selector(fsVolumeSliderUpdate:)];
 434     [self addSubview: o_fs_volumeSlider];
 435
 436     /* time counter and stream title output fields */
 437     s_rc = [self frame];
 438     s_rc.origin.x = 98;
 439     s_rc.origin.y = 64;
 440     s_rc.size.width = 352;
 441     s_rc.size.height = 14;
 442     addTextfield( o_streamTitle_txt, NSCenterTextAlignment, systemFontOfSize, whiteColor, 0 );
 443     s_rc.origin.x = 486;
 444     s_rc.origin.y = 64;
 445     s_rc.size.width = 50;
 446     addTextfield( o_streamPosition_txt, NSRightTextAlignment, systemFontOfSize, whiteColor, 0 );
 447
 448     return view;
 449 }
 450
 451 - (void)dealloc
 452 {
 453     [o_fs_timeSlider release];
 454     [o_fs_volumeSlider release];
 455     [o_prev release];
 456     [o_next release];
 457     [o_bwd release];
 458     [o_play release];
 459     [o_fwd release];
 460     [o_fullscreen release];
 461     [o_streamTitle_txt release];
 462     [o_streamPosition_txt release];
 463     [super dealloc];
 464 }
 465
 466 - (void)setPlay
 467 {
 468     [o_play setImage:[NSImage imageNamed:@"fs_play"]];
 469     [o_play setAlternateImage: [NSImage imageNamed:@"fs_play_highlight"]];
 470 }
 471
 472 - (void)setPause
 473 {
 474     [o_play setImage: [NSImage imageNamed:@"fs_pause"]];
 475     [o_play setAlternateImage: [NSImage imageNamed:@"fs_pause_highlight"]];
 476 }
 477
 478 - (void)setStreamTitle:(NSString *)o_title
 479 {
 480     [o_streamTitle_txt setStringValue: o_title];
 481 }
 482
 483 - (void)setStreamPos:(float) f_pos andTime:(NSString *)o_time
 484 {
 485     [o_streamPosition_txt setStringValue: o_time];
 486     [o_fs_timeSlider setFloatValue: f_pos];
 487 }
 488
 489 - (void)setSeekable:(BOOL)b_seekable
 490 {
 491     [o_bwd setEnabled: b_seekable];
 492     [o_fwd setEnabled: b_seekable];
 493     [o_fs_timeSlider setEnabled: b_seekable];
 494 }
 495
 496 - (void)setVolumeLevel: (float)f_volumeLevel
 497 {
 498     [o_fs_volumeSlider setFloatValue: f_volumeLevel];
 499 }
 500
 501 - (IBAction)play:(id)sender
 502 {
 503     [[[VLCMain sharedInstance] getControls] play: sender];
 504 }
 505
 506 - (IBAction)forward:(id)sender
 507 {
 508     [[[VLCMain sharedInstance] getControls] forward: sender];
 509 }
 510
 511 - (IBAction)backward:(id)sender
 512 {
 513     [[[VLCMain sharedInstance] getControls] backward: sender];
 514 }
 515
 516 - (IBAction)prev:(id)sender
 517 {
 518     [[[VLCMain sharedInstance] getControls] prev: sender];
 519 }
 520
 521 - (IBAction)next:(id)sender
 522 {
 523     [[[VLCMain sharedInstance] getControls] next: sender];
 524 }
 525
 526 - (IBAction)windowAction:(id)sender
 527 {
 528     [[[VLCMain sharedInstance] getControls] windowAction: sender];
 529 }
 530
 531 - (IBAction)fsTimeSliderUpdate:(id)sender
 532 {
 533     [[VLCMain sharedInstance] timesliderUpdate: sender];
 534 }
 535
 536 - (IBAction)fsVolumeSliderUpdate:(id)sender
 537 {
 538     [[[VLCMain sharedInstance] getControls] volumeSliderUpdated: sender];
 539 }
 540
 541 #define addImage(image, _x, _y, mode, _width)                                               \
 542     img = [NSImage imageNamed:image];                                              \
 543     image_rect.size = [img size];                                                           \
 544     image_rect.origin.x = 0;                                                                \
 545     image_rect.origin.y = 0;                                                                \
 546     frame.origin.x = _x;                                                                    \
 547     frame.origin.y = _y;                                                                    \
 548     frame.size = [img size];                                                                \
 549     if( _width ) frame.size.width = _width;                                                 \
 550     [img drawInRect:frame fromRect:image_rect operation:mode fraction:1];
 551
 552 - (void)drawRect:(NSRect)rect
 553 {
 554     NSRect frame = [self frame];
 555     NSRect image_rect;
 556     NSImage *img;
 557     addImage( @"fs_background", 0, 0, NSCompositeCopy, 0 );
 558     addImage( @"fs_volume_slider_bar", 26, 22, NSCompositeSourceOver, 0 );
 559     addImage( @"fs_volume_mute", 16, 18, NSCompositeSourceOver, 0 );
 560     addImage( @"fs_volume_max", 124, 17, NSCompositeSourceOver, 0 );
 561     addImage( @"fs_time_slider", 15, 53, NSCompositeSourceOver, 0);
 562 }
 563
 564 @end
 565
 566 /*****************************************************************************
 567  * VLCFSTimeSlider
 568  *****************************************************************************/
 569 @implementation VLCFSTimeSlider
 570 - (void)drawKnobInRect:(NSRect)knobRect
 571 {
 572     NSRect image_rect;
 573     NSImage *img = [NSImage imageNamed:@"fs_time_slider_knob_highlight"];
 574     image_rect.size = [img size];
 575     image_rect.origin.x = 0;
 576     image_rect.origin.y = 0;
 577     knobRect.origin.x += (knobRect.size.width - image_rect.size.width) / 2;
 578     knobRect.size.width = image_rect.size.width;
 579     knobRect.size.height = image_rect.size.height;
 580     [img drawInRect:knobRect fromRect:image_rect operation:NSCompositeSourceOver fraction:1];
 581 }
 582
 583 - (void)drawRect:(NSRect)rect
 584 {
 585     /* Draw default to make sure the slider behaves correctly */
 586     [[NSGraphicsContext currentContext] saveGraphicsState];
 587     NSRectClip(NSZeroRect);
 588     [super drawRect:rect];
 589     [[NSGraphicsContext currentContext] restoreGraphicsState];
 590
 591     NSRect knobRect = [[self cell] knobRectFlipped:NO];
 592     knobRect.origin.y+=7.5;
 593     [[[NSColor blackColor] colorWithAlphaComponent:0.6] set];
 594     [self drawKnobInRect: knobRect];
 595 }
 596
 597 @end
 598
 599 /*****************************************************************************
 600 * VLCFSVolumeSlider
 601 *****************************************************************************/
 602 @implementation VLCFSVolumeSlider
 603 - (void)drawKnobInRect:(NSRect) knobRect
 604 {
 605     NSRect image_rect;
 606     NSImage *img = [NSImage imageNamed:@"fs_volume_slider_knob"];
 607     image_rect.size = [img size];
 608     image_rect.origin.x = 0;
 609     image_rect.origin.y = 0;
 610     knobRect.origin.x += (knobRect.size.width - image_rect.size.width) / 2;
 611     knobRect.size.width = image_rect.size.width;
 612     knobRect.size.height = image_rect.size.height;
 613     [img drawInRect:knobRect fromRect:image_rect operation:NSCompositeSourceOver fraction:1];
 614 }
 615
 616 - (void)drawRect:(NSRect)rect
 617 {
 618     /* Draw default to make sure the slider behaves correctly */
 619     [[NSGraphicsContext currentContext] saveGraphicsState];
 620     NSRectClip(NSZeroRect);
 621     [super drawRect:rect];
 622     [[NSGraphicsContext currentContext] restoreGraphicsState];
 623
 624     NSRect knobRect = [[self cell] knobRectFlipped:NO];
 625     knobRect.origin.y+=6;
 626     [[[NSColor blackColor] colorWithAlphaComponent:0.6] set];
 627     [self drawKnobInRect: knobRect];
 628 }
 629
 630 @end
 631