专门针对 canvas 的 picker 基类 / Base picker class specifically for canvas More...
#include <qwt_canvas_picker.h>
Inheritance diagram for QwtCanvasPicker:
Public Member Functions | |
| QwtCanvasPicker (QWidget *canvas) | |
| QwtPlot * | plot () |
| const QwtPlot * | plot () const |
| QWidget * | canvas () |
| const QWidget * | canvas () const |
 Public Member Functions inherited from QwtPicker | |
| QwtPicker (QWidget *parent) | |
| Constructor. | |
| QwtPicker (RubberBand rubberBand, DisplayMode trackerMode, QWidget *) | |
| Constructor. | |
| virtual | ~QwtPicker () |
| Destructor. | |
| void | setStateMachine (QwtPickerMachine *) |
| Set a state machine and delete the previous one. | |
| const QwtPickerMachine * | stateMachine () const |
| QwtPickerMachine * | stateMachine () |
| void | setRubberBand (RubberBand) |
| Set the rubber band style. | |
| RubberBand | rubberBand () const |
| void | setTrackerMode (DisplayMode) |
| Set the display mode of the tracker. | |
| DisplayMode | trackerMode () const |
| void | setResizeMode (ResizeMode) |
| Set the resize mode. | |
| ResizeMode | resizeMode () const |
| void | setRubberBandPen (const QPen &) |
| Set the pen for the rubberband. | |
| QPen | rubberBandPen () const |
| void | setTrackerPen (const QPen &) |
| Set the pen for the tracker. | |
| QPen | trackerPen () const |
| void | setTrackerFont (const QFont &) |
| Set the font for the tracker. | |
| QFont | trackerFont () const |
| bool | isEnabled () const |
| bool | isActive () const |
| A picker is active between begin() and end(). | |
| virtual bool | eventFilter (QObject *, QEvent *) QWT_OVERRIDE |
| Event filter. | |
| QWidget * | parentWidget () |
| Return the parent widget, where the selection happens. | |
| const QWidget * | parentWidget () const |
| Return the parent widget, where the selection happens. | |
| virtual QPainterPath | pickArea () const |
| Find the area of the observed widget, where selection might happen. | |
| virtual void | drawRubberBand (QPainter *) const |
| Draw a rubber band, depending on rubberBand() | |
| virtual void | drawTracker (QPainter *) const |
| Draw the tracker. | |
| virtual QRegion | trackerMask () const |
| Calculate the mask for the tracker overlay. | |
| virtual QRegion | rubberBandMask () const |
| Calculate the mask for the rubber band overlay. | |
| virtual QwtText | trackerText (const QPoint &pos) const |
| Return the label for a position. | |
| virtual QRect | trackerRect (const QFont &) const |
| Calculate the bounding rectangle for the tracker text from the current position of the tracker. | |
| virtual void | setTrackerPosition (const QPoint &pos) |
| 强制设置trackerPosition，正常这个不需要调用，但有时候没有鼠标也想显示picker可以通过此函数来设置 | |
| QPoint | trackerPosition () const |
| QPolygon | selection () const |
| void | update () |
| void | setActive (bool on) |
| Public Member Functions inherited from QwtEventPattern | |
| QwtEventPattern () | |
| Constructor. | |
| virtual | ~QwtEventPattern () |
| Destructor. | |
| void | initMousePattern (int numButtons) |
| Set default mouse patterns, depending on the number of mouse buttons. | |
| void | initKeyPattern () |
| Set default mouse patterns. | |
| void | setMousePattern (MousePatternCode, Qt::MouseButton button, Qt::KeyboardModifiers=Qt::NoModifier) |
| Change one mouse pattern. | |
| void | setKeyPattern (KeyPatternCode, int key, Qt::KeyboardModifiers modifiers=Qt::NoModifier) |
| Change one key pattern. | |
| void | setMousePattern (const QVector< MousePattern > &) |
| Change the mouse event patterns. | |
| void | setKeyPattern (const QVector< KeyPattern > &) |
| Change the key event patterns. | |
| const QVector< MousePattern > & | mousePattern () const |
| const QVector< KeyPattern > & | keyPattern () const |
| QVector< MousePattern > & | mousePattern () |
| QVector< KeyPattern > & | keyPattern () |
| bool | mouseMatch (MousePatternCode, const QMouseEvent *) const |
| Compare a mouse event with an event pattern. | |
| bool | keyMatch (KeyPatternCode, const QKeyEvent *) const |
| Compare a key event with an event pattern. | |
Additional Inherited Members | |
| Public Types inherited from QwtPicker | |
| enum | RubberBand { NoRubberBand = 0 , HLineRubberBand , VLineRubberBand , CrossRubberBand , RectRubberBand , EllipseRubberBand , PolygonRubberBand , UserRubberBand = 100 } |
| Rubber band style. More... | |
| enum | DisplayMode { AlwaysOff , AlwaysOn , ActiveOnly } |
| Display mode. More... | |
| enum | ResizeMode { Stretch , KeepSize } |
| Controls what to do with the selected points of an active selection when the observed widget is resized. More... | |
| Public Types inherited from QwtEventPattern | |
| enum | MousePatternCode { MouseSelect1 , MouseSelect2 , MouseSelect3 , MouseSelect4 , MouseSelect5 , MouseSelect6 , MousePatternCount } |
| Symbolic mouse input codes. More... | |
| enum | KeyPatternCode { KeySelect1 , KeySelect2 , KeyAbort , KeyLeft , KeyRight , KeyUp , KeyDown , KeyRedo , KeyUndo , KeyHome , KeyPatternCount } |
| Symbolic keyboard input codes. More... | |
| Public Slots inherited from QwtPicker | |
| void | setEnabled (bool) |
| En/disable the picker. | |
| Signals inherited from QwtPicker | |
| void | activated (bool on) |
| A signal indicating, when the picker has been activated. | |
| void | selected (const QPolygon &polygon) |
| A signal emitting the selected points, at the end of a selection. | |
| void | appended (const QPoint &pos) |
| A signal emitted when a point has been appended to the selection. | |
| void | moved (const QPoint &pos) |
| A signal emitted whenever the last appended point of the selection has been moved. | |
| void | removed (const QPoint &pos) |
| A signal emitted whenever the last appended point of the selection has been removed. | |
| void | changed (const QPolygon &selection) |
| A signal emitted when the active selection has been changed. | |
| Protected Member Functions inherited from QwtPicker | |
| virtual QPolygon | adjustedPoints (const QPolygon &) const |
| Map the pickedPoints() into a selection() | |
| virtual void | transition (const QEvent *) |
| Passes an event to the state machine and executes the resulting commands. | |
| virtual void | begin () |
| Open a selection setting the state to active. | |
| virtual void | append (const QPoint &) |
| Append a point to the selection and update rubber band and tracker. | |
| virtual void | move (const QPoint &) |
| Move the last point of the selection The moved() signal is emitted. | |
| virtual void | remove () |
| Remove the last point of the selection The removed() signal is emitted. | |
| virtual bool | end (bool ok=true) |
| Close a selection setting the state to inactive. | |
| virtual bool | accept (QPolygon &) const |
| Validate and fix up the selection. | |
| virtual void | reset () |
| Reset the state machine and terminate ( end(false) ) the selection. | |
| virtual void | widgetMousePressEvent (QMouseEvent *) |
| Handle a mouse press event for the observed widget. | |
| virtual void | widgetMouseReleaseEvent (QMouseEvent *) |
| Handle a mouse release event for the observed widget. | |
| virtual void | widgetMouseDoubleClickEvent (QMouseEvent *) |
| Handle mouse double click event for the observed widget. | |
| virtual void | widgetMouseMoveEvent (QMouseEvent *) |
| Handle a mouse move event for the observed widget. | |
| virtual void | widgetWheelEvent (QWheelEvent *) |
| Handle a wheel event for the observed widget. | |
| virtual void | widgetKeyPressEvent (QKeyEvent *) |
| Handle a key press event for the observed widget. | |
| virtual void | widgetKeyReleaseEvent (QKeyEvent *) |
| Handle a key release event for the observed widget. | |
| virtual void | widgetEnterEvent (QEvent *) |
| Handle a enter event for the observed widget. | |
| virtual void | widgetLeaveEvent (QEvent *) |
| Handle a leave event for the observed widget. | |
| virtual void | stretchSelection (const QSize &oldSize, const QSize &newSize) |
| Scale the selection by the ratios of oldSize and newSize The changed() signal is emitted. | |
| virtual void | updateDisplay () |
| Update the state of rubber band and tracker label. | |
| const QwtWidgetOverlay * | rubberBandOverlay () const |
| const QwtWidgetOverlay * | trackerOverlay () const |
| const QPolygon & | pickedPoints () const |
| Return the points, that have been collected so far. | |
| Protected Member Functions inherited from QwtEventPattern | |
| virtual bool | mouseMatch (const MousePattern &, const QMouseEvent *) const |
| Compare a mouse event with an event pattern. | |
| virtual bool | keyMatch (const KeyPattern &, const QKeyEvent *) const |
| Compare a key event with an event pattern. | |
| Properties inherited from QwtPicker | |
| bool | isEnabled |
| ResizeMode | resizeMode |
| DisplayMode | trackerMode |
| QPen | trackerPen |
| QFont | trackerFont |
| RubberBand | rubberBand |
| QPen | rubberBandPen |
Detailed Description
专门针对 canvas 的 picker 基类 / Base picker class specifically for canvas
提供 canvas 和 plot 的便捷访问方法，作为其他 canvas 相关工具的基类。 Provides convenient access methods for canvas and plot, serving as a base class for other canvas-related tools.
The documentation for this class was generated from the following files:
- /home/runner/work/QWT/QWT/src/qwt_canvas_picker.h
- /home/runner/work/QWT/QWT/src/qwt_canvas_picker.cpp
