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NSStepper class : first implementation
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@10734 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Pierre-Yves Rivaille
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61
Headers/gnustep/gui/NSStepper.h
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61
Headers/gnustep/gui/NSStepper.h
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/*
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NSStepper.h
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The stepper class
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Copyright (C) 2001 Free Software Foundation, Inc.
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Author: Pierre-Yves Rivaille <pyrivail@ens-lyon.fr>
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Date: August 2001
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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_NSStepper
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#define _GNUstep_H_NSStepper
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#include <AppKit/NSControl.h>
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@class NSEvent;
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@interface NSStepper : NSControl
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{
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// Attributes
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}
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- (double) maxValue;
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- (void) setMaxValue: (double)maxValue;
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- (double) minValue;
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- (void) setMinValue: (double)minValue;
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- (double) increment;
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- (void) setIncrement: (double)increment;
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- (BOOL)autorepeat;
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- (void)setAutorepeat: (BOOL)autorepeat;
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- (BOOL)valueWraps;
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- (void)setValueWraps: (BOOL)valueWraps;
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- (void)mouseDown:(NSEvent*)event;
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@end
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@interface NSStepper (Private)
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- (void)_increment;
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- (void)_decrement;
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@end
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#endif // _GNUstep_H_NSStepper
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360
Source/NSStepper.m
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360
Source/NSStepper.m
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/*
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NSStepper.m
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Copyright (C) 2001 Free Software Foundation, Inc.
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Author: Pierre-Yves Rivaille <pyrivail@ens-lyon.fr>
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Date: August 2001
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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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#include <gnustep/gui/config.h>
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#include <Foundation/NSException.h>
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#include <AppKit/NSStepper.h>
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#include <AppKit/NSControl.h>
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#include <AppKit/NSColor.h>
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#include <AppKit/NSEvent.h>
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#include <AppKit/NSWindow.h>
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#include <AppKit/NSApplication.h>
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#include <AppKit/NSStepperCell.h>
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//
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// class variables
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//
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id _nsstepperCellClass = nil;
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@implementation NSStepper
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//
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// Class methods
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//
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+ (void) initialize
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{
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if (self == [NSStepper class])
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{
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NSDebugLog(@"Initialize NSStepper class\n");
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[self setVersion: 1];
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[self setCellClass: [NSStepperCell class]];
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}
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}
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//
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// Initializing the NSStepper Factory
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//
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+ (Class) cellClass
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{
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return _nsstepperCellClass;
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}
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+ (void) setCellClass: (Class)classId
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{
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_nsstepperCellClass = classId;
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}
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//
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// Instance methods
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//
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- (BOOL) acceptsFirstMouse: (NSEvent *)theEvent
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{
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return YES;
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}
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//
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// Determining the first responder
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//
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- (BOOL) acceptsFirstResponder
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{
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return [self isEnabled];
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}
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- (BOOL) becomeFirstResponder
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{
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[_cell setShowsFirstResponder: YES];
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[self setNeedsDisplay: YES];
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return YES;
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}
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- (BOOL) resignFirstResponder
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{
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[_cell setShowsFirstResponder: NO];
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[self setNeedsDisplay: YES];
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return YES;
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}
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- (void) keyDown: (NSEvent*)theEvent
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{
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}
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- (void) encodeWithCoder: (NSCoder *)aCoder
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{
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[super encodeWithCoder: aCoder];
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}
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- (id) initWithCoder: (NSCoder *)aDecoder
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{
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[super initWithCoder: aDecoder];
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return self;
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}
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- (double) maxValue
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{
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return [_cell maxValue];
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}
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- (void) setMaxValue: (double)maxValue
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{
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[_cell setMaxValue: maxValue];
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}
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- (double) minValue
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{
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return [_cell minValue];
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}
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- (void) setMinValue: (double)minValue
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{
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[_cell setMinValue: minValue];
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}
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- (double) increment
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{
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return [_cell increment];
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}
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- (void) setIncrement: (double)increment
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{
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[_cell setIncrement: increment];
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}
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- (BOOL)autorepeat
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{
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return [_cell autorepeat];
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}
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- (void)setAutorepeat: (BOOL)autorepeat
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{
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[_cell setAutorepeat: autorepeat];
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}
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- (BOOL)valueWraps
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{
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return [_cell valueWraps];
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}
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- (void)setValueWraps: (BOOL)valueWraps
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{
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[_cell setValueWraps: valueWraps];
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}
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- (void) mouseDown: (NSEvent *)event
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{
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NSPoint point = [event locationInWindow];
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NSRect upRect;
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NSRect downRect;
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NSRect rect;
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BOOL isDirectionUp;
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BOOL autorepeat = [_cell autorepeat];
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if([event type] != NSLeftMouseDown)
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return;
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upRect = [_cell upButtonRectWithFrame: _bounds];
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downRect = [_cell downButtonRectWithFrame: _bounds];
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point = [self convertPoint: point fromView: nil];
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if (NSMouseInRect(point, upRect, NO))
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{
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isDirectionUp = YES;
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rect = upRect;
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}
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else if (NSMouseInRect(point, downRect, NO))
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{
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isDirectionUp = NO;
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rect = downRect;
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}
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else
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{
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return;
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}
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{
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BOOL overButton = YES;
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int ignore = 3;
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unsigned int eventMask = NSLeftMouseUpMask
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| NSLeftMouseDraggedMask
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| NSPeriodicMask;
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NSDate *farAway = [NSDate distantFuture];
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[_window flushWindow];
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[_cell highlight: YES
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upButton: isDirectionUp
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withFrame: _bounds
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inView: self];
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[_window _captureMouse: self];
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if (autorepeat)
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{
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[NSEvent startPeriodicEventsAfterDelay: 0.5 withPeriod: 0.025];
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if (isDirectionUp)
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[self _increment];
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else
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[self _decrement];
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[_cell drawWithFrame:_bounds
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inView:self];
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[_window flushWindow];
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}
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else
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[_window flushWindow];
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event = [NSApp nextEventMatchingMask: eventMask
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untilDate: farAway
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inMode: NSEventTrackingRunLoopMode
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dequeue: YES];
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while([event type] != NSLeftMouseUp)
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{
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if ([event type] == NSPeriodic)
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{
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ignore ++;
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if (ignore == 4) ignore = 0;
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if (ignore == 0)
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{
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if (isDirectionUp)
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[self _increment];
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else
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[self _decrement];
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[_cell drawWithFrame:_bounds
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inView:self];
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[_window flushWindow];
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}
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}
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else if (NSMouseInRect(point, rect, NO) != overButton)
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{
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overButton = !overButton;
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if (overButton && autorepeat)
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{
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[NSEvent startPeriodicEventsAfterDelay: 0.5
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withPeriod: 0.025];
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ignore = 3;
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}
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else
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{
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[NSEvent stopPeriodicEvents];
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}
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[_cell highlight: overButton
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upButton: isDirectionUp
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withFrame: _bounds
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inView: self];
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[_window flushWindow];
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}
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event = [NSApp nextEventMatchingMask: eventMask
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untilDate: farAway
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inMode: NSEventTrackingRunLoopMode
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dequeue: YES];
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point = [self convertPoint: [event locationInWindow]
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fromView: nil];
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}
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if (overButton && autorepeat)
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[NSEvent stopPeriodicEvents];
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if (overButton && !autorepeat)
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{
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if (isDirectionUp)
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[self _increment];
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else
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[self _decrement];
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[_cell drawWithFrame:_bounds
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inView:self];
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}
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[_cell highlight: NO
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upButton: isDirectionUp
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withFrame: _bounds
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inView: self];
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[_window flushWindow];
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[_window _releaseMouse: self];
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}
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}
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- (void)_increment
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{
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double newValue;
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double maxValue = [_cell maxValue];
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double minValue = [_cell minValue];
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double increment = [_cell increment];
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newValue = [_cell doubleValue] + increment;
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if ([_cell valueWraps])
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{
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if (newValue > maxValue)
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[_cell setDoubleValue:
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newValue - maxValue + minValue - 1];
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else if (newValue < minValue)
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[_cell setDoubleValue:
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newValue + maxValue - minValue + 1];
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else
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[_cell setDoubleValue: newValue];
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}
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else
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{
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if (newValue > maxValue)
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[_cell setDoubleValue: maxValue];
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else if (newValue < minValue)
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[_cell setDoubleValue: minValue];
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else
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[_cell setDoubleValue: newValue];
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}
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}
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- (void)_decrement
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{
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double newValue;
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double maxValue = [_cell maxValue];
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double minValue = [_cell minValue];
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double increment = [_cell increment];
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newValue = [_cell doubleValue] - increment;
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if ([_cell valueWraps])
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{
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if (newValue > maxValue)
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[_cell setDoubleValue:
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newValue - maxValue + minValue - 1];
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else if (newValue < minValue)
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[_cell setDoubleValue:
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newValue + maxValue - minValue + 1];
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else
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[_cell setDoubleValue: newValue];
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}
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else
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{
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if (newValue > maxValue)
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[_cell setDoubleValue: maxValue];
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else if (newValue < minValue)
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[_cell setDoubleValue: minValue];
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else
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[_cell setDoubleValue: newValue];
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}
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}
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@end
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