* finally use the iTunes volumeslider knob that we have had since 0.7.0 but...

* finally use the iTunes volumeslider knob that we have had since 0.7.0 but which I never cared to enable. closes #209

extras/MacOSX/Resources/English.lproj/MainMenu.nib/classes.nib

 {
     IBClasses = (
         {CLASS = FirstResponder; LANGUAGE = ObjC; SUPERCLASS = NSObject; }, 
+        {CLASS = ITSlider; LANGUAGE = ObjC; SUPERCLASS = NSSlider; }, 
         {CLASS = MPSlider; LANGUAGE = ObjC; SUPERCLASS = NSSlider; }, 
         {CLASS = VLBrushedMetalImageView; LANGUAGE = ObjC; SUPERCLASS = NSImageView; }, 
         {CLASS = VLCApplication; LANGUAGE = ObjC; SUPERCLASS = NSApplication; }, 

extras/MacOSX/Resources/English.lproj/MainMenu.nib/info.nib

@@ -11,19 +11,19 @@
 		<key>2197</key>
 		<string>422 532 596 143 0 0 1440 878 </string>
 		<key>29</key>
-		<string>557 789 437 44 0 0 1440 878 </string>
+		<string>468 906 437 44 0 0 1280 1002 </string>
 		<key>915</key>
 		<string>678 573 187 249 0 0 1280 1002 </string>
 	</dict>
 	<key>IBFramework Version</key>
-	<string>437.0</string>
+	<string>439.0</string>
 	<key>IBLockedObjects</key>
 	<array/>
 	<key>IBOpenObjects</key>
 	<array>
+		<integer>21</integer>
 		<integer>2029</integer>
 		<integer>29</integer>
-		<integer>21</integer>
 	</array>
 	<key>IBSystem Version</key>
 	<string>8C46</string>

modules/gui/macosx/misc.h

@@ -60,7 +60,29 @@
 
 @interface MPSlider : NSSlider
 {
+}
+
+@end
 
+/*****************************************************************************
+ * ITSliderCell
+ *****************************************************************************/
+ 
+@interface ITSlider : NSSlider
+{
+}
+
+@end
+
+/*****************************************************************************
+ * ITSliderCell
+ *****************************************************************************/
+ 
+@interface ITSliderCell : NSSliderCell
+{
+    NSImage *_knobOff;
+    NSImage *_knobOn;
+    BOOL b_mouse_down;
 }
 
 @end

modules/gui/macosx/misc.m

@@ -269,3 +269,97 @@ void _drawFrameInRect(NSRect frameRect)
 
 @end
 
+
+/*****************************************************************************
+ * ITSlider
+ *****************************************************************************/
+
+@implementation ITSlider
+
+- (void)awakeFromNib
+{
+    if ([[self cell] class] != [ITSliderCell class]) {
+        // replace cell
+        NSSliderCell *oldCell = [self cell];
+        NSSliderCell *newCell = [[[ITSliderCell alloc] init] autorelease];
+        [newCell setTag:[oldCell tag]];
+        [newCell setTarget:[oldCell target]];
+        [newCell setAction:[oldCell action]];
+        [newCell setControlSize:[oldCell controlSize]];
+        [newCell setType:[oldCell type]];
+        [newCell setState:[oldCell state]]; 
+        [newCell setAllowsTickMarkValuesOnly:[oldCell allowsTickMarkValuesOnly]];
+        [newCell setAltIncrementValue:[oldCell altIncrementValue]];
+        [newCell setControlTint:[oldCell controlTint]];
+        [newCell setKnobThickness:[oldCell knobThickness]];
+        [newCell setMaxValue:[oldCell maxValue]];
+        [newCell setMinValue:[oldCell minValue]];
+        [newCell setDoubleValue:[oldCell doubleValue]];
+        [newCell setNumberOfTickMarks:[oldCell numberOfTickMarks]];
+        [newCell setSliderType:[oldCell sliderType]];
+        [newCell setEditable:[oldCell isEditable]];
+        [newCell setEnabled:[oldCell isEnabled]];
+        [newCell setEntryType:[oldCell entryType]];
+        [newCell setFocusRingType:[oldCell focusRingType]];
+        [newCell setHighlighted:[oldCell isHighlighted]];
+        [newCell setTickMarkPosition:[oldCell tickMarkPosition]];
+        [self setCell:newCell];
+    }
+}
+
+@end
+
+/*****************************************************************************
+ * ITSliderCell
+ *****************************************************************************/
+@implementation ITSliderCell
+
+- (id)init
+{
+    self = [super init];
+    _knobOff = [[NSImage imageNamed:@"volumeslider_normal"] retain];
+    _knobOn = [[NSImage imageNamed:@"volumeslider_blue"] retain];
+    b_mouse_down = FALSE;
+    return self;
+}
+
+- (void)dealloc
+{
+    [_knobOff release];
+    [_knobOn release];
+    [super dealloc];
+}
+
+- (void)drawKnob:(NSRect)knob_rect
+{
+    NSImage *knob;
+
+    if( b_mouse_down )
+        knob = _knobOn;
+    else
+        knob = _knobOff;
+
+    [[self controlView] lockFocus];
+    [knob compositeToPoint:NSMakePoint( knob_rect.origin.x + 1,
+        knob_rect.origin.y + knob_rect.size.height -2 )  
+        operation:NSCompositeSourceOver];
+    [[self controlView] unlockFocus];
+}
+
+- (void)stopTracking:(NSPoint)lastPoint at:(NSPoint)stopPoint inView: 
+        (NSView *)controlView mouseIsUp:(BOOL)flag
+{
+    b_mouse_down = NO;
+    [self drawKnob];
+    [super stopTracking:lastPoint at:stopPoint inView:controlView mouseIsUp:flag];
+}
+
+- (BOOL)startTrackingAt:(NSPoint)startPoint inView:(NSView *)controlView
+{
+    b_mouse_down = YES;
+    [self drawKnob];
+    return [super startTrackingAt:startPoint inView:controlView];
+}
+
+@end
+