Developer Documentation

numWidget.cc
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40 \*===========================================================================*/
41
42
43
44 //== INCLUDES =================================================================
45 #include <cmath>
46
47 #include <QHBoxLayout>
48 #include <QSlider>
49 #include <QPushButton>
50 #include <QDoubleSpinBox>
51
52 #include "numWidget.hh"
53
54 //== NAMESPACES ===============================================================
55 namespace VSI {
56
57 //=============================================================================
58 //
59 // CLASS VSI::NumWidget - IMPLEMENTATION
60 //
61 //=============================================================================
62
64 NumWidget::NumWidget(QMap< QString, QString > &_hints, QString _typeName, QWidget *_parent) :
65 TypeWidget (_hints, _typeName, _parent),
66 precision_ (1.0),
67 isFloat_ (false),
68 numDecimals_ (0),
69 sliderMul_ (1.0),
70 slider_ (0),
71 spin_ (0)
72 {
73 bool ok;
74
75 QHBoxLayout *hL = new QHBoxLayout;
76
77 if (_hints.contains ("precision"))
78 {
79 double v = _hints["precision"].toDouble (&ok);
80 if (ok)
81 precision_ = v;
82 }
83
84
85
86 while (precision_ * sliderMul_ != floor(precision_ * sliderMul_) && numDecimals_ <= 10)
87 {
88 sliderMul_ *= 10.0;
89 numDecimals_++;
90 }
91
92 if (_typeName == "Float")
93 isFloat_ = true;
94 else if (_typeName == "Integer")
95 isFloat_ = false;
96 else if (precision_ != int(precision_))
97 isFloat_ = true;
98
99
100 if (_hints.contains ("min") && _hints.contains ("max"))
101 {
102 double min = _hints["min"].toDouble (&ok);
103 if (!ok)
104 min = -65535;
105 if (!isFloat_)
106 min = int (min);
107
108 double max = _hints["max"].toDouble (&ok);
109 if (!ok)
110 max = 65535;
111 if (!isFloat_)
112 max = int (max);
113
114 if (min > max)
115 max = min + precision_;
116
117 max *= sliderMul_;
118 min *= sliderMul_;
119
120 slider_ = new QSlider;
121 slider_->setRange (min, max);
122 slider_->setSingleStep (precision_ * sliderMul_);
123 slider_->setOrientation (Qt::Horizontal);
124
125 connect (slider_, SIGNAL (valueChanged(int)), this, SLOT (sliderValueChanged(int)));
126
127 hL->addWidget(slider_);
128 }
129 else
130 {
131 hL->addStretch ();
132 }
133
134 spin_ = new QDoubleSpinBox;
135
136 if (_hints.contains ("min") && _hints.contains ("max"))
137 {
138 double min = _hints["min"].toDouble (&ok);
139 if (!ok)
140 min = -65535;
141 if (!isFloat_)
142 min = int (min);
143
144 double max = _hints["max"].toDouble (&ok);
145 if (!ok)
146 max = 65535;
147 if (!isFloat_)
148 max = int (max);
149
150 if (min > max)
151 max = min + precision_;
152
153 spin_->setRange (min, max);
154 }
155 else
156 spin_->setRange (-1000000, 1000000);
157
158 spin_->setSingleStep (precision_);
159 spin_->setDecimals (numDecimals_);
160 connect (spin_, SIGNAL (valueChanged(double)), this, SLOT (spinValueChanged(double)));
161
162 ok = false;
163 if (_hints.contains ("default"))
164 default_ = _hints["default"].toFloat (&ok);
165
166 if (!ok)
167 default_ = (spin_->minimum () + spin_->maximum ()) / 2;
168
169 spin_->setValue (default_);
170
171 hL->addWidget (spin_);
172
173 setLayout (hL);
174 }
175
177 NumWidget::~ NumWidget()
178 {
179 }
180
181 //------------------------------------------------------------------------------
182
184 QString NumWidget::toValue()
185 {
186 return QString::number (spin_->value ());
187 }
188
189 //------------------------------------------------------------------------------
190
192 void NumWidget::fromValue(QString _from)
193 {
194 spin_->setValue (_from.toDouble());
195 }
196
197 //------------------------------------------------------------------------------
198
199 // handle slider changes
200 void VSI::NumWidget::sliderValueChanged(int _value)
201 {
202 double v = _value / sliderMul_;
203
204 if (v != spin_->value ())
205 spin_->setValue (v);
206 }
207
208 //------------------------------------------------------------------------------
209
210 // handle spinbox changes
211 void VSI::NumWidget::spinValueChanged(double _value)
212 {
213 double v = _value * sliderMul_;
214
215 if (slider_ && v != slider_->value ())
216 slider_->setValue (v);
217 }
218
219 //------------------------------------------------------------------------------
220
222 void VSI::NumWidget::toDefault()
223 {
224 spin_->setValue (default_);
225 }
226
227 //------------------------------------------------------------------------------
228 }
229
VSI::TypeWidget
Definition: typeWidget.hh:59
VSI::NumWidget::toValue
QString toValue()
Convert current value to string.
Definition: numWidget.cc:184
VSI
Definition: baseWidget.cc:72
VSI::NumWidget::NumWidget
NumWidget(QMap< QString, QString > &_hints, QString _typeName, QWidget *_parent=NULL)
Constructor.
Definition: numWidget.cc:64
VSI::NumWidget::toDefault
void toDefault()
Reset to default.
Definition: numWidget.cc:222
VSI::NumWidget::fromValue
void fromValue(QString _from)
Read value from string.
Definition: numWidget.cc:192