Developer Documentation
QtWheel.hh
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45 
46 //=============================================================================
47 //
48 // CLASS QWheel
49 //
50 //=============================================================================
51 
52 #ifndef ACG_QT_WHEEL_HH
53 #define ACG_QT_WHEEL_HH
54 
55 
56 //== INCLUDES =================================================================
57 
58 #include <QPalette>
59 #include <QFrame>
60 #include <QMouseEvent>
61 #include <QPixmap>
62 #include <QKeyEvent>
63 #include <QResizeEvent>
64 #include <QPaintEvent>
65 
66 #include "../Config/ACGDefines.hh"
67 
68 
69 //== FORWARDDECLARATIONS ======================================================
70 
71 class QPaintEvent;
72 class QMouseEvent;
73 class QPainter;
74 
75 
76 //== NAMESPACES ===============================================================
77 
78 
79 namespace ACG {
80 namespace QtWidgets {
81 
82 
83 //== CLASS DEFINITION =========================================================
84 
85 
101 class ACGDLLEXPORT QtWheel : public QFrame
102 {
103  Q_OBJECT
104 public:
105 
107  enum Orientation { Horizontal, Vertical };
108 
109  //
110  // CONSTRUCTORS
111  //
112 
114  QtWheel(QWidget* _parent=0,
115  const char* _name=0,
116  Orientation _orientation = Horizontal);
117 
119  virtual ~QtWheel();
120 
121 
122  //
123  // METHODS
124  //
125 
127  int ticks() const { return ticks_; }
129  void setTicks(int _number) {
130  ticks_=_number; redrawPixmap(); repaint();
131  }
132 
134  double angle() const { return angle_; }
136  void setAngle(double _angle) {
137  angle_=_angle; lastAngle_=0.0; redrawPixmap(); repaint();
138  }
144  double diffAngle() const { return angle_-lastAngle_; }
145 
147  bool marker() const { return marker_; }
149  void setMarker(bool _b) {
150  marker_=_b; redrawPixmap(); repaint();
151  }
152 
154  Orientation orientation() const;
156  void setOrientation(Orientation _orientation) {
157  orientation_=_orientation; redrawPixmap(); repaint();
158  }
159 
161  bool draggingWheel() const { return dragging_; }
162 
169  void setTracking(bool _b) { tracking_=_b; }
171  bool tracking() const { return tracking_; }
172 
180  void setGear(double _g) { gear_=_g; }
182  double gear() const { return gear_; }
183 
185  virtual QSizePolicy sizePolicy() const;
187  virtual QSize sizeHint() const;
188 
197  static double clip(double _angle);
198 
200  static double deg(double _angle);
201 
202 signals:
206  void angleChangedTo(double _angle);
217  void angleChangedBy(double _angle);
218 
223  void gearUp();
225  void gearDown();
226 
228  void hideWheel();
229 
230 protected:
232  virtual void mousePressEvent(QMouseEvent*);
234  virtual void mouseReleaseEvent(QMouseEvent*);
236  virtual void mouseMoveEvent(QMouseEvent*);
238  virtual void mouseDoubleClickEvent(QMouseEvent*);
240  virtual void keyPressEvent(QKeyEvent*);
242  virtual void keyReleaseEvent(QKeyEvent*);
243 
245  virtual void resizeEvent(QResizeEvent*);
247  virtual void paintEvent(QPaintEvent*);
249  virtual void drawContents(QPainter*) {};
250 
251 
253  virtual void redrawPixmap();
254 
255 private slots:
256  void slotCustomContextMenuRequested ( const QPoint & pos );
257 
258 private:
259 
261  QtWheel(const QtWheel&);
263  QtWheel& operator=(const QtWheel&);
264 
266  double turn(const QPoint& _pos);
267  void updateMenu();
268  void shrinkRect(QRect&, int, int);
269 
270  double angle_;
271  double lastAngle_;
272  int size_;
273 
274  double gear_;
276 
278 
279  int ticks_;
280  bool marker_;
281 
282  QPoint pos_;
283  bool dragging_;
284  bool tracking_;
285 
286  QPalette palette_;
287  QPixmap pixmap_;
288 };
289 
290 //=============================================================================
291 } // namespace QtWidgets
292 } // namespace ACG
293 //=============================================================================
294 #endif // ACG_QWHEEL_HH defined
295 //=============================================================================
296 
Namespace providing different geometric functions concerning angles.
int gearShift_
click-shifted gear by 2^gearShift_
Definition: QtWheel.hh:275
bool draggingWheel() const
Is the user currently dragging the wheel whith the mouse?
Definition: QtWheel.hh:161
double diffAngle() const
Definition: QtWheel.hh:144
int ticks_
number of ticks on the wheel
Definition: QtWheel.hh:279
void setTicks(int _number)
set _number of ticks on the wheel (default: 36)
Definition: QtWheel.hh:129
virtual void drawContents(QPainter *)
reimplemented
Definition: QtWheel.hh:249
QPoint pos_
recent mouse position
Definition: QtWheel.hh:282
double angle_
current angle of the wheel
Definition: QtWheel.hh:270
void setMarker(bool _b)
enable/disable markers on the wheel
Definition: QtWheel.hh:149
double gear() const
How fast does angle() change when the wheel is turned? (see above)
Definition: QtWheel.hh:182
Orientation orientation_
orientation of the widget
Definition: QtWheel.hh:277
bool tracking_
tracking on?
Definition: QtWheel.hh:284
void setTracking(bool _b)
Definition: QtWheel.hh:169
bool dragging_
currently dragging the slider?
Definition: QtWheel.hh:283
bool marker_
should ticks be marked by colors?
Definition: QtWheel.hh:280
void setOrientation(Orientation _orientation)
set orientation
Definition: QtWheel.hh:156
QPixmap pixmap_
pixmap of the wheel
Definition: QtWheel.hh:287
void setAngle(double _angle)
set current angle of the wheel (radiants, unbounded, cf. clip())
Definition: QtWheel.hh:136
int ticks() const
get number of ticks on the wheel
Definition: QtWheel.hh:127
double gear_
speed of revolution
Definition: QtWheel.hh:274
bool tracking() const
Is tracking on?
Definition: QtWheel.hh:171
double lastAngle_
last angle, depends on tracking_
Definition: QtWheel.hh:271
Orientation
Orientation of the widget.
Definition: QtWheel.hh:107
bool marker() const
Are there markers on the wheel?
Definition: QtWheel.hh:147
QPalette palette_
color group
Definition: QtWheel.hh:286
void setGear(double _g)
Definition: QtWheel.hh:180
int size_
size of wheel in pixels
Definition: QtWheel.hh:272
double angle() const
get current angle of the wheel (radiants, unbounded, cf. clip())
Definition: QtWheel.hh:134