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 @interface VLCFSPanel ()
  35 - (void)hideMouse;
  36 @end
  37
  38 /*****************************************************************************
  39  * VLCFSPanel
  40  *****************************************************************************/
  41 @implementation VLCFSPanel
  42 /* We override this initializer so we can set the NSBorderlessWindowMask styleMask, and set a few other important settings */
  43 - (id)initWithContentRect:(NSRect)contentRect
  44                 styleMask:(NSUInteger)aStyle
  45                   backing:(NSBackingStoreType)bufferingType
  46                     defer:(BOOL)flag
  47 {
  48     id win = [super initWithContentRect:contentRect styleMask:NSTexturedBackgroundWindowMask backing:bufferingType defer:flag];
  49     [win setOpaque:NO];
  50     [win setHasShadow: NO];
  51     [win setBackgroundColor:[NSColor clearColor]];
  52
  53     /* let the window sit on top of everything else and start out completely transparent */
  54     [win setLevel:NSModalPanelWindowLevel];
  55     i_device = 0;
  56     [win center];
  57     hideAgainTimer = fadeTimer = nil;
  58     [self setNonActive:nil];
  59     return win;
  60 }
  61
  62 - (void)awakeFromNib
  63 {
  64     [self setContentView:[[VLCFSPanelView alloc] initWithFrame: [self frame]]];
  65     BOOL isInside = (NSPointInRect([NSEvent mouseLocation],[self frame]));
  66     [[self contentView] addTrackingRect:[[self contentView] bounds] owner:self userData:nil assumeInside:isInside];
  67     if (isInside)
  68         [self mouseEntered:NULL];
  69     if (!isInside)
  70         [self mouseExited:NULL];
  71
  72     /* get a notification if VLC isn't the active app anymore */
  73     [[NSNotificationCenter defaultCenter]
  74     addObserver: self
  75        selector: @selector(setNonActive:)
  76            name: NSApplicationDidResignActiveNotification
  77          object: NSApp];
  78
  79     /* get a notification if VLC is the active app again */
  80     [[NSNotificationCenter defaultCenter]
  81     addObserver: self
  82        selector: @selector(setActive:)
  83            name: NSApplicationDidBecomeActiveNotification
  84          object: NSApp];
  85 }
  86
  87 /* Windows created with NSBorderlessWindowMask normally can't be key, but we want ours to be */
  88 - (BOOL)canBecomeKeyWindow
  89 {
  90     return YES;
  91 }
  92
  93 - (BOOL)mouseDownCanMoveWindow
  94 {
  95     return YES;
  96 }
  97
  98 -(void)dealloc
  99 {
 100     [[NSNotificationCenter defaultCenter] removeObserver: self];
 101
 102     if( hideAgainTimer )
 103     {
 104         [hideAgainTimer invalidate];
 105         [hideAgainTimer release];
 106     }
 107     [self setFadeTimer:nil];
 108     [super dealloc];
 109 }
 110
 111 -(void)center
 112 {
 113     /* centre the panel in the lower third of the screen */
 114     NSPoint theCoordinate;
 115     NSRect theScreensFrame;
 116     NSRect theWindowsFrame;
 117     NSScreen *screen;
 118
 119     /* user-defined screen */
 120     screen = [NSScreen screenWithDisplayID: (CGDirectDisplayID)i_device];
 121
 122     if (!screen)
 123     {
 124         /* invalid preferences or none specified, using main screen */
 125         screen = [NSScreen mainScreen];
 126     }
 127
 128     theScreensFrame = [screen frame];
 129
 130     theWindowsFrame = [self frame];
 131
 132     theCoordinate.x = (theScreensFrame.size.width - theWindowsFrame.size.width) / 2 + theScreensFrame.origin.x;
 133     theCoordinate.y = (theScreensFrame.size.height / 3) - theWindowsFrame.size.height + theScreensFrame.origin.y;
 134     [self setFrameTopLeftPoint: theCoordinate];
 135 }
 136
 137 - (void)setPlay
 138 {
 139     [[self contentView] setPlay];
 140 }
 141
 142 - (void)setPause
 143 {
 144     [[self contentView] setPause];
 145 }
 146
 147 - (void)setStreamTitle:(NSString *)o_title
 148 {
 149     [[self contentView] setStreamTitle: o_title];
 150 }
 151
 152 - (void)setStreamPos:(float) f_pos andTime:(NSString *)o_time
 153 {
 154     [[self contentView] setStreamPos:f_pos andTime: o_time];
 155 }
 156
 157 - (void)setSeekable:(BOOL) b_seekable
 158 {
 159     [[self contentView] setSeekable: b_seekable];
 160 }
 161
 162 - (void)setVolumeLevel: (float)f_volumeLevel
 163 {
 164     [[self contentView] setVolumeLevel: f_volumeLevel];
 165 }
 166
 167 - (void)setNonActive:(id)noData
 168 {
 169     b_nonActive = YES;
 170     [self orderOut: self];
 171
 172     /* here's fadeOut, just without visibly fading */
 173     b_displayed = NO;
 174     [self setAlphaValue:0.0];
 175     [self setFadeTimer:nil];
 176     b_fadeQueued = NO;
 177 }
 178
 179 - (void)setActive:(id)noData
 180 {
 181     if( [[[VLCMain sharedInstance] controls] voutView] != nil )
 182     {
 183         if( [[[[VLCMain sharedInstance] controls] voutView] isFullscreen] )
 184         {
 185             b_nonActive = NO;
 186             [self fadeIn];
 187         }
 188     }
 189 }
 190
 191 /* This routine is called repeatedly to fade in the window */
 192 - (void)focus:(NSTimer *)timer
 193 {
 194     /* we need to push ourselves to front if the vout window was closed since our last display */
 195     if( b_voutWasUpdated )
 196     {
 197         [self orderFront: self];
 198         b_voutWasUpdated = NO;
 199     }
 200
 201     if( [self alphaValue] < 1.0 )
 202         [self setAlphaValue:[self alphaValue]+0.1];
 203     if( [self alphaValue] >= 1.0 )
 204     {
 205         b_displayed = YES;
 206         [self setAlphaValue: 1.0];
 207         [self setFadeTimer:nil];
 208         if( b_fadeQueued )
 209         {
 210             b_fadeQueued=NO;
 211             [self setFadeTimer:[NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(unfocus:) userInfo:NULL repeats:YES]];
 212         }
 213     }
 214 }
 215
 216 /* This routine is called repeatedly to hide the window */
 217 - (void)unfocus:(NSTimer *)timer
 218 {
 219     if( b_keptVisible )
 220     {
 221         b_keptVisible = NO;
 222         b_fadeQueued = NO;
 223         [self setFadeTimer: NULL];
 224         [self fadeIn];
 225         return;
 226     }
 227     if( [self alphaValue] > 0.0 )
 228         [self setAlphaValue:[self alphaValue]-0.05];
 229     if( [self alphaValue] <= 0.05 )
 230     {
 231         b_displayed = NO;
 232         [self setAlphaValue:0.0];
 233         [self setFadeTimer:nil];
 234         if( b_fadeQueued )
 235         {
 236             b_fadeQueued=NO;
 237             [self setFadeTimer:
 238                 [NSTimer scheduledTimerWithTimeInterval:0.1
 239                                                  target:self
 240                                                selector:@selector(focus:)
 241                                                userInfo:NULL
 242                                                 repeats:YES]];
 243         }
 244     }
 245 }
 246
 247 - (void)mouseExited:(NSEvent *)theEvent
 248 {
 249     /* give up our focus, so the vout may show us again without letting the user clicking it */
 250     if( [[[[VLCMain sharedInstance] controls] voutView] isFullscreen] )
 251         [[[[[VLCMain sharedInstance] controls] voutView] window] makeKeyWindow];
 252 }
 253
 254 - (void)hideMouse
 255 {
 256     [NSCursor setHiddenUntilMouseMoves: YES];
 257 }
 258
 259 - (void)fadeIn
 260 {
 261     /* in case that the user don't want us to appear, make sure we hide the mouse */
 262
 263     if( !config_GetInt( VLCIntf, "macosx-fspanel" ) )
 264     {
 265         float time = (float)var_CreateGetInteger( VLCIntf, "mouse-hide-timeout" ) / 1000.;
 266         [self setFadeTimer:[NSTimer scheduledTimerWithTimeInterval:time target:self selector:@selector(hideMouse) userInfo:nil repeats:NO]];
 267         return;
 268     }
 269
 270     if( b_nonActive )
 271         return;
 272
 273     [self orderFront: nil];
 274
 275     if( [self alphaValue] < 1.0 || b_displayed != YES )
 276     {
 277         if (![self fadeTimer])
 278             [self setFadeTimer:[NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(focus:) userInfo:[NSNumber numberWithShort:1] repeats:YES]];
 279         else if ([[[self fadeTimer] userInfo] shortValue]==0)
 280             b_fadeQueued=YES;
 281     }
 282     [self autoHide];
 283 }
 284
 285 - (void)fadeOut
 286 {
 287     if( NSPointInRect([NSEvent mouseLocation],[self frame]))
 288         return;
 289
 290     if( ( [self alphaValue] > 0.0 ) )
 291     {
 292         if (![self fadeTimer])
 293             [self setFadeTimer:[NSTimer scheduledTimerWithTimeInterval:0.05 target:self selector:@selector(unfocus:) userInfo:[NSNumber numberWithShort:0] repeats:YES]];
 294         else if ([[[self fadeTimer] userInfo] shortValue]==1)
 295             b_fadeQueued=YES;
 296     }
 297 }
 298
 299 /* triggers a timer to autoHide us again after some seconds of no activity */
 300 - (void)autoHide
 301 {
 302     /* this will tell the timer to start over again or to start at all */
 303     b_keptVisible = YES;
 304
 305     /* get us a valid timer */
 306     if(! b_alreadyCounting )
 307     {
 308         i_timeToKeepVisibleInSec = var_CreateGetInteger( VLCIntf, "mouse-hide-timeout" ) / 500;
 309         if( hideAgainTimer )
 310         {
 311             [hideAgainTimer invalidate];
 312             [hideAgainTimer autorelease];
 313         }
 314         /* released in -autoHide and -dealloc */
 315         hideAgainTimer = [[NSTimer scheduledTimerWithTimeInterval: 0.5
 316                                                           target: self
 317                                                         selector: @selector(keepVisible:)
 318                                                         userInfo: nil
 319                                                          repeats: YES] retain];
 320         b_alreadyCounting = YES;
 321     }
 322 }
 323
 324 - (void)keepVisible:(NSTimer *)timer
 325 {
 326     /* if the user triggered an action, start over again */
 327     if( b_keptVisible )
 328         b_keptVisible = NO;
 329
 330     /* count down until we hide ourselfes again and do so if necessary */
 331     if( --i_timeToKeepVisibleInSec < 1 )
 332     {
 333         [self hideMouse];
 334         [self fadeOut];
 335         [hideAgainTimer invalidate]; /* released in -autoHide and -dealloc */
 336         b_alreadyCounting = NO;
 337     }
 338 }
 339
 340 /* A getter and setter for our main timer that handles window fading */
 341 - (NSTimer *)fadeTimer
 342 {
 343     return fadeTimer;
 344 }
 345
 346 - (void)setFadeTimer:(NSTimer *)timer
 347 {
 348     [timer retain];
 349     [fadeTimer invalidate];
 350     [fadeTimer autorelease];
 351     fadeTimer=timer;
 352 }
 353
 354 - (void)mouseDown:(NSEvent *)theEvent
 355 {
 356     mouseClic = [theEvent locationInWindow];
 357 }
 358
 359 - (void)mouseDragged:(NSEvent *)theEvent
 360 {
 361     NSPoint point = [NSEvent mouseLocation];
 362     point.x -= mouseClic.x;
 363     point.y -= mouseClic.y;
 364     [self setFrameOrigin:point];
 365 }
 366
 367 - (BOOL)isDisplayed
 368 {
 369     return b_displayed;
 370 }
 371
 372 - (void)setVoutWasUpdated: (int)i_newdevice;
 373 {
 374     b_voutWasUpdated = YES;
 375     if( i_newdevice != i_device )
 376     {
 377         i_device = i_newdevice;
 378         [self center];
 379     }
 380 }
 381 @end
 382
 383 /*****************************************************************************
 384  * FSPanelView
 385  *****************************************************************************/
 386 @implementation VLCFSPanelView
 387
 388 #define addButton( o_button, imageOff, imageOn, _x, _y, action )                                \
 389     s_rc.origin.x = _x;                                                                         \
 390     s_rc.origin.y = _y;                                                                         \
 391     o_button = [[NSButton alloc] initWithFrame: s_rc];                                 \
 392     [o_button setButtonType: NSMomentaryChangeButton];                                          \
 393     [o_button setBezelStyle: NSRegularSquareBezelStyle];                                        \
 394     [o_button setBordered: NO];                                                                 \
 395     [o_button setFont:[NSFont systemFontOfSize:0]];                                             \
 396     [o_button setImage:[NSImage imageNamed:imageOff]];                                 \
 397     [o_button setAlternateImage:[NSImage imageNamed:imageOn]];                         \
 398     [o_button sizeToFit];                                                                       \
 399     [o_button setTarget: self];                                                                 \
 400     [o_button setAction: @selector(action:)];                                                   \
 401     [self addSubview:o_button];
 402
 403 #define addTextfield( o_text, align, font, color, size )                                    \
 404     o_text = [[NSTextField alloc] initWithFrame: s_rc];                            \
 405     [o_text setDrawsBackground: NO];                                                        \
 406     [o_text setBordered: NO];                                                               \
 407     [o_text setEditable: NO];                                                               \
 408     [o_text setSelectable: NO];                                                             \
 409     [o_text setStringValue: _NS("(no item is being played)")];                                                    \
 410     [o_text setAlignment: align];                                                           \
 411     [o_text setTextColor: [NSColor color]];                                                 \
 412     [o_text setFont:[NSFont font:[NSFont smallSystemFontSize] - size]];                     \
 413     [self addSubview:o_text];
 414
 415 - (id)initWithFrame:(NSRect)frameRect
 416 {
 417     id view = [super initWithFrame:frameRect];
 418     fillColor = [[NSColor clearColor] retain];
 419     NSRect s_rc = [self frame];
 420     addButton( o_prev, @"fs_skip_previous" , @"fs_skip_previous_highlight", 174, 15, prev );
 421     addButton( o_bwd, @"fs_rewind"        , @"fs_rewind_highlight"       , 211, 14, backward );
 422     addButton( o_play, @"fs_play"          , @"fs_play_highlight"         , 267, 10, play );
 423     addButton( o_fwd, @"fs_forward"       , @"fs_forward_highlight"      , 313, 14, forward );
 424     addButton( o_next, @"fs_skip_next"     , @"fs_skip_next_highlight"    , 365, 15, next );
 425     addButton( o_fullscreen, @"fs_exit_fullscreen", @"fs_exit_fullscreen_hightlight", 507, 13, windowAction );
 426 /*
 427     addButton( o_button, @"image (off state)", @"image (on state)", 38, 51, something );
 428  */
 429
 430     /* time slider */
 431     s_rc = [self frame];
 432     s_rc.origin.x = 15;
 433     s_rc.origin.y = 53;
 434     s_rc.size.width = 518;
 435     s_rc.size.height = 9;
 436     o_fs_timeSlider = [[VLCFSTimeSlider alloc] initWithFrame: s_rc];
 437     [o_fs_timeSlider setMinValue:0];
 438     [o_fs_timeSlider setMaxValue:10000];
 439     [o_fs_timeSlider setFloatValue: 0];
 440     [o_fs_timeSlider setContinuous: YES];
 441     [o_fs_timeSlider setTarget: self];
 442     [o_fs_timeSlider setAction: @selector(fsTimeSliderUpdate:)];
 443     [self addSubview: o_fs_timeSlider];
 444
 445     /* volume slider */
 446     s_rc = [self frame];
 447     s_rc.origin.x = 26;
 448     s_rc.origin.y = 17.5;
 449     s_rc.size.width = 95;
 450     s_rc.size.height = 10;
 451     o_fs_volumeSlider = [[VLCFSVolumeSlider alloc] initWithFrame: s_rc];
 452     [o_fs_volumeSlider setMinValue:0];
 453     [o_fs_volumeSlider setMaxValue:32];
 454     [o_fs_volumeSlider setFloatValue: 0];
 455     [o_fs_volumeSlider setContinuous: YES];
 456     [o_fs_volumeSlider setTarget: self];
 457     [o_fs_volumeSlider setAction: @selector(fsVolumeSliderUpdate:)];
 458     [self addSubview: o_fs_volumeSlider];
 459
 460     /* time counter and stream title output fields */
 461     s_rc = [self frame];
 462     s_rc.origin.x = 98;
 463     s_rc.origin.y = 64;
 464     s_rc.size.width = 352;
 465     s_rc.size.height = 14;
 466     addTextfield( o_streamTitle_txt, NSCenterTextAlignment, systemFontOfSize, whiteColor, 0 );
 467     s_rc.origin.x = 486;
 468     s_rc.origin.y = 64;
 469     s_rc.size.width = 50;
 470     addTextfield( o_streamPosition_txt, NSRightTextAlignment, systemFontOfSize, whiteColor, 0 );
 471
 472     return view;
 473 }
 474
 475 - (void)dealloc
 476 {
 477     [o_fs_timeSlider release];
 478     [o_fs_volumeSlider release];
 479     [o_prev release];
 480     [o_next release];
 481     [o_bwd release];
 482     [o_play release];
 483     [o_fwd release];
 484     [o_fullscreen release];
 485     [o_streamTitle_txt release];
 486     [o_streamPosition_txt release];
 487     [super dealloc];
 488 }
 489
 490 - (void)setPlay
 491 {
 492     [o_play setImage:[NSImage imageNamed:@"fs_play"]];
 493     [o_play setAlternateImage: [NSImage imageNamed:@"fs_play_highlight"]];
 494 }
 495
 496 - (void)setPause
 497 {
 498     [o_play setImage: [NSImage imageNamed:@"fs_pause"]];
 499     [o_play setAlternateImage: [NSImage imageNamed:@"fs_pause_highlight"]];
 500 }
 501
 502 - (void)setStreamTitle:(NSString *)o_title
 503 {
 504     [o_streamTitle_txt setStringValue: o_title];
 505 }
 506
 507 - (void)setStreamPos:(float) f_pos andTime:(NSString *)o_time
 508 {
 509     [o_streamPosition_txt setStringValue: o_time];
 510     [o_fs_timeSlider setFloatValue: f_pos];
 511 }
 512
 513 - (void)setSeekable:(BOOL)b_seekable
 514 {
 515     [o_bwd setEnabled: b_seekable];
 516     [o_fwd setEnabled: b_seekable];
 517     [o_fs_timeSlider setEnabled: b_seekable];
 518 }
 519
 520 - (void)setVolumeLevel: (float)f_volumeLevel
 521 {
 522     [o_fs_volumeSlider setFloatValue: f_volumeLevel];
 523 }
 524
 525 - (IBAction)play:(id)sender
 526 {
 527     [[[VLCMain sharedInstance] controls] play: sender];
 528 }
 529
 530 - (IBAction)forward:(id)sender
 531 {
 532     [[[VLCMain sharedInstance] controls] forward: sender];
 533 }
 534
 535 - (IBAction)backward:(id)sender
 536 {
 537     [[[VLCMain sharedInstance] controls] backward: sender];
 538 }
 539
 540 - (IBAction)prev:(id)sender
 541 {
 542     [[[VLCMain sharedInstance] controls] prev: sender];
 543 }
 544
 545 - (IBAction)next:(id)sender
 546 {
 547     [[[VLCMain sharedInstance] controls] next: sender];
 548 }
 549
 550 - (IBAction)windowAction:(id)sender
 551 {
 552     [[[VLCMain sharedInstance] controls] windowAction: sender];
 553 }
 554
 555 - (IBAction)fsTimeSliderUpdate:(id)sender
 556 {
 557     [[VLCMain sharedInstance] timesliderUpdate: sender];
 558 }
 559
 560 - (IBAction)fsVolumeSliderUpdate:(id)sender
 561 {
 562     [[[VLCMain sharedInstance] controls] volumeSliderUpdated: sender];
 563 }
 564
 565 #define addImage(image, _x, _y, mode, _width)                                               \
 566     img = [NSImage imageNamed:image];                                              \
 567     image_rect.size = [img size];                                                           \
 568     image_rect.origin.x = 0;                                                                \
 569     image_rect.origin.y = 0;                                                                \
 570     frame.origin.x = _x;                                                                    \
 571     frame.origin.y = _y;                                                                    \
 572     frame.size = [img size];                                                                \
 573     if( _width ) frame.size.width = _width;                                                 \
 574     [img drawInRect:frame fromRect:image_rect operation:mode fraction:1];
 575
 576 - (void)drawRect:(NSRect)rect
 577 {
 578     NSRect frame = [self frame];
 579     NSRect image_rect;
 580     NSImage *img;
 581     addImage( @"fs_background", 0, 0, NSCompositeCopy, 0 );
 582     addImage( @"fs_volume_slider_bar", 26, 22, NSCompositeSourceOver, 0 );
 583     addImage( @"fs_volume_mute", 16, 18, NSCompositeSourceOver, 0 );
 584     addImage( @"fs_volume_max", 124, 17, NSCompositeSourceOver, 0 );
 585     addImage( @"fs_time_slider", 15, 53, NSCompositeSourceOver, 0);
 586 }
 587
 588 @end
 589
 590 /*****************************************************************************
 591  * VLCFSTimeSlider
 592  *****************************************************************************/
 593 @implementation VLCFSTimeSlider
 594 - (void)drawKnobInRect:(NSRect)knobRect
 595 {
 596     NSRect image_rect;
 597     NSImage *img = [NSImage imageNamed:@"fs_time_slider_knob_highlight"];
 598     image_rect.size = [img size];
 599     image_rect.origin.x = 0;
 600     image_rect.origin.y = 0;
 601     knobRect.origin.x += (knobRect.size.width - image_rect.size.width) / 2;
 602     knobRect.size.width = image_rect.size.width;
 603     knobRect.size.height = image_rect.size.height;
 604     [img drawInRect:knobRect fromRect:image_rect operation:NSCompositeSourceOver fraction:1];
 605 }
 606
 607 - (void)drawRect:(NSRect)rect
 608 {
 609     /* Draw default to make sure the slider behaves correctly */
 610     [[NSGraphicsContext currentContext] saveGraphicsState];
 611     NSRectClip(NSZeroRect);
 612     [super drawRect:rect];
 613     [[NSGraphicsContext currentContext] restoreGraphicsState];
 614
 615     NSRect knobRect = [[self cell] knobRectFlipped:NO];
 616     knobRect.origin.y+=7.5;
 617     [[[NSColor blackColor] colorWithAlphaComponent:0.6] set];
 618     [self drawKnobInRect: knobRect];
 619 }
 620
 621 @end
 622
 623 /*****************************************************************************
 624 * VLCFSVolumeSlider
 625 *****************************************************************************/
 626 @implementation VLCFSVolumeSlider
 627 - (void)drawKnobInRect:(NSRect) knobRect
 628 {
 629     NSRect image_rect;
 630     NSImage *img = [NSImage imageNamed:@"fs_volume_slider_knob"];
 631     image_rect.size = [img size];
 632     image_rect.origin.x = 0;
 633     image_rect.origin.y = 0;
 634     knobRect.origin.x += (knobRect.size.width - image_rect.size.width) / 2;
 635     knobRect.size.width = image_rect.size.width;
 636     knobRect.size.height = image_rect.size.height;
 637     [img drawInRect:knobRect fromRect:image_rect operation:NSCompositeSourceOver fraction:1];
 638 }
 639
 640 - (void)drawRect:(NSRect)rect
 641 {
 642     /* Draw default to make sure the slider behaves correctly */
 643     [[NSGraphicsContext currentContext] saveGraphicsState];
 644     NSRectClip(NSZeroRect);
 645     [super drawRect:rect];
 646     [[NSGraphicsContext currentContext] restoreGraphicsState];
 647
 648     NSRect knobRect = [[self cell] knobRectFlipped:NO];
 649     knobRect.origin.y+=6;
 650     [[[NSColor blackColor] colorWithAlphaComponent:0.6] set];
 651     [self drawKnobInRect: knobRect];
 652 }
 653
 654 @end
 655