Public Types | |
| enum | Orientation { Horizontal, Vertical } |
Orientation of the widget. | |
Signals | |
| void | angleChangedTo (double _angle) |
| void | angleChangedBy (double _angle) |
| void | gearUp () |
| void | gearDown () |
| Like gearUp() but the value of gear() halves. | |
| void | hideWheel () |
| Emitted when the wheel will be hidden by the context menu. | |
Public Member Functions | |
| QtWheel (QWidget *_parent=0, const char *_name=0, Orientation _orientation=Horizontal) | |
| Constructor. | |
| virtual | ~QtWheel () |
| Destructor. | |
| int | ticks () const |
| get number of ticks on the wheel | |
| void | setTicks (int _number) |
set _number of ticks on the wheel (default: 36) | |
| double | angle () const |
| get current angle of the wheel (radiants, unbounded, cf. clip()) | |
| void | setAngle (double _angle) |
| set current angle of the wheel (radiants, unbounded, cf. clip()) | |
| double | diffAngle () const |
| bool | marker () const |
| Are there markers on the wheel? | |
| void | setMarker (bool _b) |
| enable/disable markers on the wheel | |
| Orientation | orientation () const |
| get orientation | |
| void | setOrientation (Orientation _orientation) |
| set orientation | |
| bool | draggingWheel () const |
| Is the user currently dragging the wheel whith the mouse? | |
| void | setTracking (bool _b) |
| bool | tracking () const |
| Is tracking on? | |
| void | setGear (double _g) |
| double | gear () const |
| How fast does angle() change when the wheel is turned? (see above). | |
| virtual QSizePolicy | sizePolicy () const |
| reimplemented | |
| virtual QSize | sizeHint () const |
| reimplemented | |
Static Public Member Functions | |
| static double | clip (double _angle) |
| static double | deg (double _angle) |
maps _angle from radiants to degrees (works also for clip()ped angles) | |
Protected Member Functions | |
| virtual void | mousePressEvent (QMouseEvent *) |
| reimplemented | |
| virtual void | mouseReleaseEvent (QMouseEvent *) |
| reimplemented | |
| virtual void | mouseMoveEvent (QMouseEvent *) |
| reimplemented | |
| virtual void | mouseDoubleClickEvent (QMouseEvent *) |
| reimplemented | |
| virtual void | keyPressEvent (QKeyEvent *) |
| reimplemented | |
| virtual void | keyReleaseEvent (QKeyEvent *) |
| reimplemented | |
| virtual void | resizeEvent (QResizeEvent *) |
| reimplemented | |
| virtual void | paintEvent (QPaintEvent *) |
| reimplemented | |
| virtual void | drawContents (QPainter *) |
| reimplemented | |
| virtual void | redrawPixmap () |
| draw wheel to pixmap (double buffering) | |
Private Slots | |
| void | slotCustomContextMenuRequested (const QPoint &pos) |
Private Member Functions | |
| QtWheel (const QtWheel &) | |
| Copy constructor. Never used! | |
| QtWheel & | operator= (const QtWheel &) |
| Assignment operator. Never used! | |
| double | turn (const QPoint &_pos) |
| void | updateMenu () |
| updates the ticks of the menu | |
| void | shrinkRect (QRect &, int, int) |
| expands a rectangle in x/y direction | |
Private Attributes | |
| double | angle_ |
| current angle of the wheel | |
| double | lastAngle_ |
| last angle, depends on tracking_ | |
| int | size_ |
| size of wheel in pixels | |
| double | gear_ |
| speed of revolution | |
| int | gearShift_ |
| click-shifted gear by 2^gearShift_ | |
| Orientation | orientation_ |
| orientation of the widget | |
| int | ticks_ |
| number of ticks on the wheel | |
| bool | marker_ |
| should ticks be marked by colors? | |
| QPoint | pos_ |
| recent mouse position | |
| bool | dragging_ |
| currently dragging the slider? | |
| bool | tracking_ |
| tracking on? | |
| QPalette | palette_ |
| color group | |
| QPixmap | pixmap_ |
| pixmap of the wheel | |
Definition at line 100 of file QtWheel.hh.
| void ACG::QtWidgets::QtWheel::angleChangedBy | ( | double | _angle | ) | [signal] |
The angle chaned by the relative _angle (cf. clip()).
Note: Do not use this signal together with angleChangedBy()! The reason for this is that you cannot be sure in which order the you get the signals!
If you need both values the angle and the relative difference then use this signal and angle() or angleChangedTo() and diffAngle() respectively!
Referenced by keyPressEvent(), keyReleaseEvent(), and mouseMoveEvent().
| void ACG::QtWidgets::QtWheel::angleChangedTo | ( | double | _angle | ) | [signal] |
The angle changed to the absolute _angle (cf. clip()). Note: Do not use together with angleChangedBy() (see there)!
Referenced by keyPressEvent(), keyReleaseEvent(), and mouseMoveEvent().
| double ACG::QtWidgets::QtWheel::clip | ( | double | _angle | ) | [static] |
Clips _angle to range [0,2pi[. All angle()s provided by this widget are unbounded in a sense that a full turn of the wheel is 2pi not 0. As a consequence two full turns are 4pi, etc.
This methods clips the angle again [0,2pi[
Definition at line 445 of file QtWheel.cc.
Referenced by ACG::QtWidgets::QtBaseViewer::slotWheelX(), glViewer::slotWheelX(), ACG::QtWidgets::QtBaseViewer::slotWheelY(), and glViewer::slotWheelY().
| double ACG::QtWidgets::QtWheel::diffAngle | ( | ) | const [inline] |
Get difference angle. You may call this method from a slot connected to angleChangedTo() and obtain the difference angle (equal to the argument to angleChangedBy()).
Definition at line 143 of file QtWheel.hh.
| void ACG::QtWidgets::QtWheel::gearUp | ( | ) | [signal] |
The gear() has been "shifted" by double clicking the widget. Up-shifting will double the value of gear(). The signal is emitted after gear() has been changed.
Referenced by mouseDoubleClickEvent().
| void ACG::QtWidgets::QtWheel::paintEvent | ( | QPaintEvent * | _e | ) | [protected, virtual] |
reimplemented
Definition at line 285 of file QtWheel.cc.
References pixmap_.
| void ACG::QtWidgets::QtWheel::setGear | ( | double | _g | ) | [inline] |
How fast does angle() changed when the wheel is turned? The default setting is 1.0. Then angle() will be changed by pi (180 degrees) when dragging the wheel from one end of the widget to the other. In general this angular difference will be multiplied by gear(), i.e. for values >1,0 the angle changes faster.
Definition at line 179 of file QtWheel.hh.
| void ACG::QtWidgets::QtWheel::setTracking | ( | bool | _b | ) | [inline] |
Enables wheel tracking (default: true)
If tracking is enabled, then the QtWheel emits signals whenever the it is dragged. Otherwise signals are emitted only when a dragging process is finished.
Definition at line 168 of file QtWheel.hh.
Project OpenFlipper,
© Computer Graphics Group, RWTH Aachen.
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