#include <plotzoomer.h>
Public Member Functions | |
| void | keepAspectratio (bool doKeep) |
| PlotZoomer () | |
| PlotZoomer (QWidget *) | |
| virtual | ~PlotZoomer () override |
Protected Member Functions | |
| virtual bool | accept (QPolygon &) const override |
| Check and correct a selected rectangle. | |
| virtual QSizeF | minZoomSize () const override |
| Limit zooming by a minimum rectangle. | |
| virtual void | widgetMouseMoveEvent (QMouseEvent *event) override |
| virtual void | widgetMousePressEvent (QMouseEvent *event) override |
| virtual void | widgetMouseReleaseEvent (QMouseEvent *event) override |
| virtual void | zoom (const QRectF &rect) override |
| Zoom in. | |
Private Attributes | |
| QPoint | _initial_pos |
| bool | _keep_aspect_ratio |
| bool | _mouse_pressed |
| bool | _zoom_enabled |
Detailed Description
Definition at line 7 of file plotzoomer.h.
Constructor & Destructor Documentation
| PlotZoomer::PlotZoomer | ( | QWidget * | canvas | ) | [explicit] |
Definition at line 7 of file plotzoomer.cpp.
| virtual PlotZoomer::~PlotZoomer | ( | ) | [override, virtual] |
Member Function Documentation
| bool PlotZoomer::accept | ( | QPolygon & | pa | ) | const [override, protected, virtual] |
Check and correct a selected rectangle.
Reject rectangles with a height or width < 2, otherwise expand the selected rectangle to a minimum size of 11x11 and accept it.
- Returns:
- true If the rectangle is accepted, or has been changed to an accepted one.
Reimplemented from QwtPlotZoomer.
Definition at line 75 of file plotzoomer.cpp.
| void PlotZoomer::keepAspectratio | ( | bool | doKeep | ) | [inline] |
Definition at line 16 of file plotzoomer.h.
| QSizeF PlotZoomer::minZoomSize | ( | ) | const [override, protected, virtual] |
Limit zooming by a minimum rectangle.
- Returns:
- zoomBase().width() / 10e4, zoomBase().height() / 10e4
Reimplemented from QwtPlotZoomer.
Definition at line 119 of file plotzoomer.cpp.
| void PlotZoomer::widgetMouseMoveEvent | ( | QMouseEvent * | mouseEvent | ) | [override, protected, virtual] |
Handle a mouse move event for the observed widget.
- Parameters:
-
mouseEvent Mouse event
- See also:
- eventFilter(), widgetMousePressEvent(), widgetMouseReleaseEvent(), widgetMouseDoubleClickEvent(), widgetWheelEvent(), widgetKeyPressEvent(), widgetKeyReleaseEvent()
Reimplemented from QwtPicker.
Definition at line 32 of file plotzoomer.cpp.
| void PlotZoomer::widgetMousePressEvent | ( | QMouseEvent * | mouseEvent | ) | [override, protected, virtual] |
Handle a mouse press event for the observed widget.
- Parameters:
-
mouseEvent Mouse event
- See also:
- eventFilter(), widgetMouseReleaseEvent(), widgetMouseDoubleClickEvent(), widgetMouseMoveEvent(), widgetWheelEvent(), widgetKeyPressEvent(), widgetKeyReleaseEvent()
Reimplemented from QwtPicker.
Definition at line 16 of file plotzoomer.cpp.
| void PlotZoomer::widgetMouseReleaseEvent | ( | QMouseEvent * | me | ) | [override, protected, virtual] |
Qt::MidButton zooms out one position on the zoom stack, Qt::RightButton to the zoom base.
Changes the current position on the stack, but doesn't pop any rectangle.
- Note:
- The mouse events can be changed, using QwtEventPattern::setMousePattern: 2, 1
Reimplemented from QwtPlotZoomer.
Definition at line 67 of file plotzoomer.cpp.
| void PlotZoomer::zoom | ( | const QRectF & | rect | ) | [override, protected, virtual] |
Zoom in.
Clears all rectangles above the current position of the zoom stack and pushes the normalized rectangle on it.
- Note:
- If the maximal stack depth is reached, zoom is ignored.
- The zoomed signal is emitted.
Reimplemented from QwtPlotZoomer.
Definition at line 92 of file plotzoomer.cpp.
Member Data Documentation
QPoint PlotZoomer::_initial_pos [private] |
Definition at line 34 of file plotzoomer.h.
bool PlotZoomer::_keep_aspect_ratio [private] |
Definition at line 33 of file plotzoomer.h.
bool PlotZoomer::_mouse_pressed [private] |
Definition at line 31 of file plotzoomer.h.
bool PlotZoomer::_zoom_enabled [private] |
Definition at line 32 of file plotzoomer.h.
The documentation for this class was generated from the following files: