Developer Documentation
QtBaseViewerKeyHandling.cc
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51 
52 //=============================================================================
53 //
54 // CLASS QtBaseViewer - IMPLEMENTATION
55 //
56 //=============================================================================
57 
58 
59 //== INCLUDES =================================================================
60 
61 #include "QtBaseViewer.hh"
62 #include <QInputDialog>
63 
64 //== NAMESPACES ===============================================================
65 
66 namespace ACG {
67 namespace QtWidgets {
68 
69 
70 //== IMPLEMENTATION ==========================================================
71 
73  disableKeyHandling_ = _state;
74 };
75 
76 //-----------------------------------------------------------------------------
77 
79  return disableKeyHandling_;
80 };
81 
82 //-----------------------------------------------------------------------------
83 
84 void QtBaseViewer::glKeyReleaseEvent(QKeyEvent* _event) {
85  _event->ignore();
86 };
87 
88 //-----------------------------------------------------------------------------
89 
90 void QtBaseViewer::glKeyPressEvent(QKeyEvent* _event)
91 {
92  // Pass key event to parent widget without any handling
93  if ( disableKeyHandling_ ) {
94  _event->ignore();
95  return;
96  }
97 
98  bool handled(false);
99 
100 
101  // CTRL + ALT events
102  if ((_event->modifiers() & Qt::ControlModifier) &&
103  (_event->modifiers() & Qt::AltModifier))
104  {
105 
106  switch (_event->key())
107  {
108  // Stereo steeing: eye distance
109  case Qt::Key_E:
110  {
111  bool save(glareaGrabbed_);
112  bool ok(false);
113 
114  // release grabbing to process input dialog
115  if(save) releaseGLArea();
116 
117  double val = QInputDialog::getDouble( this, "Eye Dist", "Eye Dist:",
118  eyeDist_,
119  0.0, 100.0, 10,
120  &ok);
121  // restore old setting
122  if(save) grabGLArea();
123 
124  if (ok) {
125  eyeDist_ = val;
126  handled = true;
127  updateGL();
128  }
129 
130  break;
131  }
132 
133 
134  // Stereo setting: focal length
135  case Qt::Key_F:
136  {
137  bool save(glareaGrabbed_);
138  bool ok(false);
139 
140  // release grabbing to process input dialog
141  if(save) releaseGLArea();
142 
143  double val = QInputDialog::getDouble( this, "Focal Dist", "Focal Dist:",
144  focalDist_,
145  0.0, 100.0, 10,
146  &ok);
147  //restore old setting
148  if(save) grabGLArea();
149 
150  if (ok) {
151  focalDist_ = val;
152  handled = true;
153  updateGL();
154  }
155  break;
156  }
157  }
158  } else { // Normal events
159 
160  switch (_event->key())
161  {
162  // Lock / unlock update
163  case Qt::Key_ScrollLock:
164  {
165  if (!updateLocked_) {
166  lockUpdate();
167  handled = true;
168  std::cerr << "Display update locked\n";
169 
170  } else {
171  unlockAndUpdate();
172  handled = true;
173  std::cerr << "Display update un-locked\n";
174  }
175  break;
176  }
177 
178  case Qt::Key_Escape:
179  {
180  actionMode(lastActionMode_);
181  handled = true;
182  break;
183  }
184  }
185  }
186 
187  // If the event has not been handled by the baseviewer, check for Key events from subclasses
188  if(!handled) {
189  handled = viewKeyPressEvent(_event);
190  }
191 
192 
193  // give event to application
194  if (!handled) {
195  _event->ignore();
196  emit(signalKeyPressEvent(_event));
197  }
198 
199 }
200 
201 
202 
203 
204 //=============================================================================
205 } // namespace QtWidgets
206 } // namespace ACG
207 //=============================================================================
virtual bool viewKeyPressEvent(QKeyEvent *_event)=0
Handle key events in view mode.
double eyeDist_
Set eye distance for stereo.
void signalKeyPressEvent(QKeyEvent *)
Key Event received.
virtual void glKeyPressEvent(QKeyEvent *)
Get keyPress events from the glArea.
virtual void updateGL()
Redraw scene. Triggers paint event for updating the view (cf. drawNow()).
bool disableKeyHandling_
Enable or disable internal Key handling.
virtual void glKeyReleaseEvent(QKeyEvent *_event)
Get keyRelease events from the glArea.
void disableKeyHandling(bool _state)
Enable or disable internal Key handling.
Namespace providing different geometric functions concerning angles.
Definition: DBSCANT.cc:51
ActionMode actionMode() const
get action mode
bool keyHandlingState()
get the current key handling state.
double focalDist_
Set eye distance for stereo.