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QtGLViewerLayout.cc
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51 
52 
53 //=============================================================================
54 //
55 // CLASS QtGLViewerLayout - IMPLEMENTATION
56 //
57 //=============================================================================
58 
59 //== INCLUDES =================================================================
60 
61 #include "QtGLViewerLayout.hh"
62 
63 //== NAMESPACES ===============================================================
64 
65 
66 //== CLASS IMPLEMENTATION======================================================
67 
68 QtGLViewerLayout::QtGLViewerLayout (QGraphicsLayoutItem * _parent) :
69  QGraphicsLayout (_parent),
70  wheelX_ (0),
71  wheelY_ (0),
72  wheelZ_ (0)
73 {
74 }
75 
76 //-----------------------------------------------------------------------------
77 
78 void QtGLViewerLayout::addWheelX (QGraphicsWidget *_item)
79 {
80  if (wheelX_)
81  items_.remove(items_.indexOf(wheelX_));
82  wheelX_ = _item;
83  items_.append(_item);
84 }
85 
86 //-----------------------------------------------------------------------------
87 
88 void QtGLViewerLayout::addWheelY (QGraphicsWidget *_item)
89 {
90  if (wheelY_)
91  items_.remove(items_.indexOf(wheelY_));
92  wheelY_ = _item;
93  items_.append(_item);
94 }
95 
96 //-----------------------------------------------------------------------------
97 
98 void QtGLViewerLayout::addWheelZ (QGraphicsWidget *_item)
99 {
100  if (wheelZ_)
101  items_.remove(items_.indexOf(wheelZ_));
102  wheelZ_ = _item;
103  items_.append(_item);
104 }
105 
106 //-----------------------------------------------------------------------------
107 
109 {
110  return items_.size();
111 }
112 
113 //-----------------------------------------------------------------------------
114 
115 QGraphicsLayoutItem * QtGLViewerLayout::itemAt(int _i) const
116 {
117  if (_i < 0 || _i >= items_.size())
118  return 0;
119 
120  return items_[_i];
121 }
122 
123 //-----------------------------------------------------------------------------
124 
125 void QtGLViewerLayout::removeAt (int _index)
126 {
127  if (_index < 0 || _index >= items_.size())
128  return;
129 
130  if (items_[_index] == wheelX_)
131  wheelX_ = 0;
132  if (items_[_index] == wheelY_)
133  wheelY_ = 0;
134  if (items_[_index] == wheelZ_)
135  wheelZ_ = 0;
136 
137  items_.remove(_index);
138 }
139 
140 //-----------------------------------------------------------------------------
141 
142 QSizeF QtGLViewerLayout::sizeHint(Qt::SizeHint /*_which*/, const QSizeF & _constraint) const
143 {
144  return _constraint;
145 }
146 
147 //-----------------------------------------------------------------------------
148 
149 void QtGLViewerLayout::setGeometry(const QRectF & rect)
150 {
151  QGraphicsLayoutItem::setGeometry (rect);
152  reLayout ();
153 }
154 
155 //-----------------------------------------------------------------------------
156 
158 {
159  if (!wheelX_ || !wheelY_ || !wheelZ_)
160  return;
161 
162  QRectF r = contentsRect ();
163  float scale = qMin(300.0, qMin(r.width(), r.height())) / 300.0;
164 
165  foreach (QGraphicsWidget *item, items_)
166  {
167  if (item->size() != item->preferredSize ())
168  item->resize (item->preferredSize ());
169  item->resetTransform();
170  item->setScale (scale);
171  }
172 
173  wheelX_->setPos (r.left(),
174  r.bottom() - ((wheelY_->size().height() + wheelX_->size().height()) * scale));
175  wheelY_->setPos (r.left() + (wheelX_->size().width() * scale),
176  r.bottom() - (wheelY_->size().height() * scale));
177  wheelZ_->setPos (r.right() - (wheelZ_->size().width() * scale),
178  r.bottom() - ((wheelY_->size().height() + wheelZ_->size().height()) * scale));
179 }
180 
181 
182 //=============================================================================
183 //=============================================================================
void addWheelX(QGraphicsWidget *_item)
Add Wheel Widget to Layout.
virtual void setGeometry(const QRectF &rect)
Tracks geometry changes.
void reLayout()
Recalculate layout.
virtual int count() const
Pure virtual functions that have to be implemented.
QGraphicsWidget * wheelX_
Items.