NSScroller Class Reference

Tasks

Managing Overlay Style Compatibility

• + isCompatibleWithOverlayScrollers

Determining Scroller Size

• + scrollerWidthForControlSize:scrollerStyle:
• + scrollerWidth
• + scrollerWidthForControlSize:
• – setControlSize:
• – controlSize

Laying out a Scroller

• – setArrowsPosition:
• – arrowsPosition

Setting the Knob Position

• – setKnobProportion:
• – knobProportion
• – setFloatValue:knobProportion: Deprecated in OS X v10.5

Calculating Layout

• – rectForPart:
• – testPart:
• – checkSpaceForParts
• – usableParts

Drawing Scroller Parts

• – drawArrow:highlight:
• – drawKnobSlotInRect:highlight:
• – drawKnob
• – highlight:
• – drawParts Deprecated in OS X v10.7

Event Handling

• – hitPart
• – trackKnob:
• – trackScrollButtons:

Setting Control Tint

• – controlTint
• – setControlTint:

Managing Presentation Style

• + preferredScrollerStyle
• – scrollerStyle
• – setScrollerStyle:
• – knobStyle
• – setKnobStyle:

+ (BOOL)isCompatibleWithOverlayScrollers {

    return self == [MyCustomScroller class];

}

enum {
   NSScrollerStyleLegacy       = 0,
   NSScrollerStyleOverlay      = 1
};
typedef NSInteger NSScrollerStyle;

enum {
   NSScrollerKnobStyleDefault  = 0,
   NSScrollerKnobStyleDark     = 1,
   NSScrollerKnobStyleLight    = 2
};
typedef NSInteger NSScrollerKnobStyle;

enum {
   NSScrollerNoPart            = 0,
   NSScrollerDecrementPage     = 1,
   NSScrollerKnob              = 2,
   NSScrollerIncrementPage     = 3,
   NSScrollerDecrementLine     = 4,
   NSScrollerIncrementLine     = 5,
   NSScrollerKnobSlot          = 6
};
typedef NSUInteger NSScrollerPart;

enum {
   NSScrollerIncrementArrow = 0,
   NSScrollerDecrementArrow = 1
};
typedef NSUInteger NSScrollerArrow;

enum {
   NSScrollerArrowsMaxEnd                = 0, /* Previously deprecated. */
   NSScrollerArrowsMinEnd                = 1, /* Previously deprecated. */
   NSScrollerArrowsDefaultSetting        = 0,
   NSScrollerArrowsNone                  = 2
};
typedef NSUInteger NSScrollArrowPosition;

enum {
   NSNoScrollerParts     = 0,
   NSOnlyScrollerArrows  = 1,
   NSAllScrollerParts    = 2
};
typedef NSUInteger NSUsableScrollerParts;