Developer Documentation
matrix4x4Widget.cc
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41 
42 
43 
44 //== INCLUDES =================================================================
45 #include <QGridLayout>
46 #include <QLineEdit>
47 #include <QLabel>
48 
49 #include "matrix4x4Widget.hh"
50 
51 //== NAMESPACES ===============================================================
52 namespace VSI {
53 
54 //=============================================================================
55 //
56 // CLASS VSI::Matrix4x4Widget - IMPLEMENTATION
57 //
58 //=============================================================================
59 
61 Matrix4x4Widget::Matrix4x4Widget(QMap< QString, QString > &_hints, QString _typeName, QWidget *_parent) :
62  TypeWidget (_hints, _typeName, _parent)
63 {
64  bool ok;
65 
66  QGridLayout *gL = new QGridLayout;
67 
68  for (int i = 0; i < 16; i++)
69  {
70  default_[i] = 0.0;
71  if (i%5 == 0) //set diagonal to 1, convenient for e.g. transformation matrices
72  default_[i] = 1.0;
73  }
74 
75  ok = true;
76  if (_hints.contains ("default"))
77  {
78  QStringList sl = _hints["default"].split (',');
79 
80  if (sl.length () == 16)
81  {
82  for (int i = 0; i < 16 && ok; i++)
83  default_[i] = sl[i].toFloat (&ok);
84 
85  if (!ok)
86  for (int i = 0; i < 16; i++)
87  default_[i] = 0.0;
88  }
89  }
90 
91  for (int i = 0; i < 16; i++)
92  fields_[i] = new QLineEdit;
93 
94  for (int i = 0; i < 4; i++)
95  {
96  gL->addWidget (new QLabel ("("),i, 0);
97  gL->addWidget (fields_[i], i, 1);
98  gL->addWidget (new QLabel (","), i, 2);
99  gL->addWidget (fields_[i + 4], i, 3);
100  gL->addWidget (new QLabel (","), i, 4);
101  gL->addWidget (fields_[i + 8], i, 5);
102  gL->addWidget (new QLabel (","), i, 6);
103  gL->addWidget (fields_[i + 12], i, 7);
104  gL->addWidget (new QLabel (")"), i, 8);
105  }
106 
107  for (int i = 0; i < 16; i++)
108  {
109  fields_[i]->setText (QString::number (default_[i]));
110  connect (fields_[i], SIGNAL (editingFinished ()), this, SLOT (editingFinished ()));
111  }
112 
113  setLayout (gL);
114 
115  for (int i = 0; i < 16; i++)
116  current_[i] = default_[i];
117 }
118 
120 Matrix4x4Widget::~ Matrix4x4Widget()
121 {
122 }
123 
124 //------------------------------------------------------------------------------
125 
128 {
129  QString rv = "Matrix4x4 (";
130  for (int i = 0; i < 16; i++)
131  rv += QString::number (current_[i]) + ",";
132 
133  rv.remove (rv.length () - 1, 1);
134  rv += ")";
135  return rv;
136 }
137 
138 //------------------------------------------------------------------------------
139 
141 void Matrix4x4Widget::fromValue(QString _from)
142 {
143  if (_from.startsWith ("Matrix4x4 ("))
144  _from.remove (0, 11);
145  if (_from.endsWith (")"))
146  _from.remove (_from.length () - 1, 1);
147 
148  QStringList sl = _from.split (',');
149 
150  float v[16];
151  bool ok = true;
152 
153  if (sl.length () == 16)
154  {
155  for (int i = 0; i < 16 && ok; i++)
156  v[i] = sl[i].toFloat (&ok);
157 
158  if (ok)
159  for (int i = 0; i < 16; i++)
160  {
161  current_[i] = v[i];
162  fields_[i]->setText (QString::number (current_[i]));
163  }
164  }
165 }
166 
167 //------------------------------------------------------------------------------
168 
169 // handle slider changes
170 void Matrix4x4Widget::editingFinished ()
171 {
172  bool ok;
173 
174  for (int i = 0; i < 16; i++)
175  {
176  const float v = fields_[i]->text ().toFloat (&ok);
177 
178  if (ok)
179  current_[i] = v;
180  else
181  fields_[i]->setText (QString::number (current_[i]));
182  }
183 }
184 
185 
186 
187 //------------------------------------------------------------------------------
188 
191 {
192  for (int i = 0; i < 16; i++)
193  {
194  current_[i] = default_[i];
195  fields_[i]->setText (QString::number (current_[i]));
196  }
197 }
198 
199 //------------------------------------------------------------------------------
200 }
201 
void fromValue(QString _from)
Read value from string.
Matrix4x4Widget(QMap< QString, QString > &_hints, QString _typeName, QWidget *_parent=NULL)
Constructor.
void toDefault()
Reset to default.
QString toValue()
Convert current value to string.