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127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
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/*
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NSScroller.h
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The scroller class
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Copyright (C) 1996 Free Software Foundation, Inc.
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Author: Ovidiu Predescu <ovidiu@net-community.com>
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A completely rewritten version of the original source by Scott Christley.
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Date: July 1997
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This file is part of the GNUstep GUI Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; see the file COPYING.LIB.
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If not, write to the Free Software Foundation,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _GNUstep_H_NSScroller
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#define _GNUstep_H_NSScroller
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#include <AppKit/NSControl.h>
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#include <AppKit/NSCell.h>
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@class NSEvent;
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typedef enum _NSScrollArrowPosition {
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NSScrollerArrowsMaxEnd,
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NSScrollerArrowsMinEnd,
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NSScrollerArrowsNone
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} NSScrollArrowPosition;
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typedef enum _NSScrollerPart {
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NSScrollerNoPart = 0,
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NSScrollerDecrementPage,
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NSScrollerKnob,
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NSScrollerIncrementPage,
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NSScrollerDecrementLine,
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NSScrollerIncrementLine,
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NSScrollerKnobSlot
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} NSScrollerPart;
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typedef enum _NSScrollerUsablePart {
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NSNoScrollerParts = 0,
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NSOnlyScrollerArrows,
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NSAllScrollerParts
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} NSUsableScrollerParts;
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typedef enum _NSScrollerArrow {
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NSScrollerIncrementArrow,
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NSScrollerDecrementArrow
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} NSScrollerArrow;
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@interface NSScroller : NSControl <NSCoding>
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{
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float _floatValue;
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float _knobProportion;
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id _target;
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SEL _action;
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BOOL _isHorizontal;
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BOOL _isEnabled;
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NSScrollerPart _hitPart;
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NSScrollArrowPosition _arrowsPosition;
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NSUsableScrollerParts _usableParts;
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BOOL _cacheValid;
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}
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//
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// Laying out the NSScroller
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//
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+ (float)scrollerWidth;
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- (NSScrollArrowPosition)arrowsPosition;
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- (void)checkSpaceForParts;
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- (NSRect)rectForPart:(NSScrollerPart)partCode;
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- (void)setArrowsPosition:(NSScrollArrowPosition)where;
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- (NSUsableScrollerParts)usableParts;
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//
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// Setting the NSScroller's Values
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//
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- (float)knobProportion;
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- (void)setFloatValue:(float)aFloat knobProportion:(float)ratio;
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//
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// Displaying
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//
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- (void)drawArrow:(NSScrollerArrow)whichButton highlight:(BOOL)flag;
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- (void)drawKnobSlot;
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- (void)drawKnob;
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- (void)drawParts;
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- (void)highlight:(BOOL)flag;
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//
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// Handling Events
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//
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- (NSScrollerPart)hitPart;
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/* Return the part of the scroller which contains thePoint. thePoint
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* is in the window's coordinate system.
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*/
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- (NSScrollerPart)testPart:(NSPoint)thePoint;
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- (void)trackKnob:(NSEvent *)theEvent;
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- (void)trackScrollButtons:(NSEvent *)theEvent;
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#ifndef STRICT_OPENSTEP
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+ (float)scrollerWidthForControlSize:(NSControlSize)controlSize;
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- (void)setControlSize:(NSControlSize)controlSize;
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- (NSControlSize)controlSize;
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- (void)setControlTint:(NSControlTint)controlTint;
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- (NSControlTint)controlTint;
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#endif
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@end
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#endif // _GNUstep_H_NSScroller
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