summaryrefslogtreecommitdiffstats
path: root/arts/gui/kde/kpoti_impl.cpp
blob: fbf442f0f8489e7248d63708eb426ad8c6fe4326 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
    /*

    Copyright (C) 2000 Stefan Westerfeld
                       stefan@space.twc.de
                  2001, 2002 Matthias Kretz <kretz@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.

    */

#include "kpoti_impl.h"
#include "kpoti_impl.moc"
#include "anyref.h"
#include "stdio.h"

#include <math.h>

using namespace Arts;
using namespace std;

PotiIntMapper::PotiIntMapper(KPoti_impl *impl, KPoti *kp)
	: TQObject( kp )
	, impl( impl )
{
	connect(kp, TQ_SIGNAL(valueChanged(int)), this, TQ_SLOT(valueChanged(int)));
}

void PotiIntMapper::valueChanged(int pos)
{
	impl->valueChanged(pos);
}

KPoti_impl::KPoti_impl( KPoti * widget )
	: KFrame_impl( widget ? widget : new KPoti( 0, 100, 1, 0 ) )
{
	_min = 0; _max = 1; _value = 0;
	_factor = 1;
	_logarithmic = 0;
	_range = 100;

	_kpoti = static_cast<KPoti*>( _qwidget );
	( void )new PotiIntMapper( this, _kpoti );
}

string KPoti_impl::caption()
{
	return _kpoti->text().utf8().data();
}

void KPoti_impl::caption(const string& newText)
{
	_caption = TQString::fromUtf8( newText.c_str() );
	_kpoti->setText( _caption );
}

string KPoti_impl::color()
{
	return _color;
}

void KPoti_impl::color(const string& newColor)
{
	_color = newColor;
    if(strlen(_color.c_str()))
    {
        TQColor qc(_color.c_str());
        _kpoti->setColor(qc);
    }
}

float KPoti_impl::min()
{
	return _min;
}

void KPoti_impl::min(float newMin)
{
	if(_min != newMin)
	{
		_min = newMin;
		applyValue();
	}
}

float KPoti_impl::max()
{
	return _max;
}

void KPoti_impl::max(float newMax)
{
	if(_max != newMax)
	{
		_max = newMax;
		applyValue();
	}
}

float KPoti_impl::value()
{
	float ret = float(_kpoti->value()) / _factor;
	if(_logarithmic > 0)
		ret = convertFromLog(ret);
	if(ret < _min)
		ret = _min;
	else if(ret > _max)
		ret = _max;
	return ret;
}

void KPoti_impl::value(float newValue)
{
	if(newValue != _value)
	{
		_value = newValue;
		applyValue();
		if(visible())
			value_changed(value());
	}
}

long KPoti_impl::range()
{
	return _range;
}

void KPoti_impl::range(long newRange)
{
	if(_range != newRange)
	{
		_range = newRange;
		applyValue();
	}
}

void KPoti_impl::valueChanged(int newvalue)
{
	_value = (float)newvalue / _factor;
	if(_logarithmic > 0)
		_value = convertFromLog(_value);
	if(visible())
		value_changed(value());
}

float KPoti_impl::convertToLog(float val)
{
	return log(val) / log(_logarithmic);
}

float KPoti_impl::convertFromLog(float val)
{
	return pow(_logarithmic, val);
}

void KPoti_impl::applyValue()
{
	double dmin = _min;
	double dmax = _max;
	double dvalue = _value;
	if(_logarithmic > 0)
	{
		dmin = convertToLog(_min);
		dmax = convertToLog(_max);
		dvalue = convertToLog(_value);
	}
	_factor = _range / (dmax - dmin);
	int imin = int(_factor * dmin);
	int imax = int(_factor * dmax);
	int ivalue = int(_factor * dvalue);
	_kpoti->setRange(imin, imax);
	_kpoti->setValue(ivalue);
}

void KPoti_impl::logarithmic(float newLogarithmic)
{
	if(_logarithmic != newLogarithmic)
	{
		_logarithmic = newLogarithmic;
		applyValue();
	}
}

float KPoti_impl::logarithmic()
{
	return _logarithmic;
}

REGISTER_IMPLEMENTATION(KPoti_impl);