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//
// Lynkeos
// $Id: LynkeosLogFields.m 501 2010-12-30 17:21:17Z j-etienne $
//
// Created by Jean-Etienne LAMIAUD on Fri Dec 28 2007.
// Copyright (c) 2007-2008. Jean-Etienne LAMIAUD
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#include "LynkeosLogFields.h"
@implementation LynkeosLogFields
- (id) initWithSlider:(NSSlider*)slider andTextField:(NSTextField*)text
{
if ( (self = [self init]) != nil )
{
_slider = slider;
_text = text;
_offset = 0.0;
}
return( self );
}
- (double) valueFrom:(id)sender
{
double v = 0.0;
if ( sender == _slider )
{
v = exp([_slider doubleValue]) + _offset;
[_text setDoubleValue:v];
}
else if ( sender == _text )
{
const double sliderMin = exp([_slider minValue]) + _offset;
v = [sender doubleValue];
if ( v < sliderMin )
{
if ( v <= 0.0 )
_offset = v - 1.0;
[_slider setMinValue:log(v - _offset)];
}
double l = log(v - _offset);
if ( l > [_slider maxValue] )
[_slider setMaxValue:l];
[_slider setDoubleValue:l];
}
else
NSAssert( NO, @"Inconsistent control" );
return( v );
}
- (void) setDoubleValue:(double)v
{
const double sliderMin = exp([_slider minValue]) + _offset;
if ( v < sliderMin )
{
if ( v <= 0.0 )
_offset = v - 1.0;
[_slider setMinValue:log(v - _offset)];
}
double l = log(v - _offset);
if ( [_text doubleValue] != v )
[_text setDoubleValue:v];
if ( [_slider doubleValue] != l )
{
if ( l > [_slider maxValue] )
[_slider setMaxValue:l];
[_slider setDoubleValue:l];
}
}
@end
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