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NSScroller.h
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1996-10-17
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78 lines
/*
NSScroller.h
Application Kit
Copyright (c) 1994-1996, NeXT Software, Inc.
All rights reserved.
*/
#import <AppKit/NSControl.h>
typedef enum _NSScrollArrowPosition {
NSScrollerArrowsMaxEnd = 0,
NSScrollerArrowsMinEnd = 1,
NSScrollerArrowsNone = 2
} NSScrollArrowPosition;
typedef enum _NSUsableScrollerParts {
NSNoScrollerParts = 0,
NSOnlyScrollerArrows = 1,
NSAllScrollerParts = 2
} NSUsableScrollerParts;
typedef enum _NSScrollerPart {
NSScrollerNoPart = 0,
NSScrollerDecrementPage = 1,
NSScrollerKnob = 2,
NSScrollerIncrementPage = 3,
NSScrollerDecrementLine = 4,
NSScrollerIncrementLine = 5,
NSScrollerKnobSlot = 6
} NSScrollerPart;
typedef enum _NSScrollerArrow {
NSScrollerIncrementArrow = 0,
NSScrollerDecrementArrow = 1
} NSScrollerArrow;
@interface NSScroller : NSControl
{
float _curValue;
float _percent;
float _knobSize;
int _hitPart;
id _target;
SEL _action;
struct _sFlags {
unsigned int isHoriz:1;
NSScrollArrowPosition arrowsLoc:2;
NSUsableScrollerParts partsUsable:2;
unsigned int fine:1;
unsigned int needsEnableFlush:1;
unsigned int thumbing:1;
unsigned int slotDrawn:1;
unsigned int knobDrawn:1;
unsigned int lit:1;
unsigned int RESERVED:21;
} sFlags;
}
+ (float)scrollerWidth;
- (void)drawParts;
- (NSRect)rectForPart:(NSScrollerPart)partCode;
- (void)checkSpaceForParts;
- (NSUsableScrollerParts)usableParts;
- (void)setArrowsPosition:(NSScrollArrowPosition)where;
- (NSScrollArrowPosition)arrowsPosition;
- (void)drawArrow:(NSScrollerArrow)whichArrow highlight:(BOOL)flag;
- (void)drawKnob;
- (void)highlight:(BOOL)flag;
- (NSScrollerPart)testPart:(NSPoint)thePoint;
- (void)trackKnob:(NSEvent *)theEvent;
- (void)trackScrollButtons:(NSEvent *)theEvent;
- (NSScrollerPart)hitPart;
- (void)setFloatValue:(float)aFloat knobProportion:(float)percent;
- (float)knobProportion;
@end