Canvas of a QwtPolarPlot. More...
#include <qwt_polar_canvas.h>
Classes | |
| class | PrivateData |
Public Types | |
| enum | PaintAttribute { BackingStore = 0x01 } |
| Paint attributes. More... | |
Public Member Functions | |
| const QPixmap * | backingStore () const |
| void | invalidateBackingStore () |
| Invalidate the internal backing store. More... | |
| QwtPointPolar | invTransform (const QPoint &) const |
| QwtPolarPlot * | plot () |
| const QwtPolarPlot * | plot () const |
| QwtPolarCanvas (QwtPolarPlot *) | |
| Constructor. More... | |
| void | setPaintAttribute (PaintAttribute, bool on=true) |
| Changing the paint attributes. More... | |
| bool | testPaintAttribute (PaintAttribute) const |
| QPoint | transform (const QwtPointPolar &) const |
| virtual | ~QwtPolarCanvas () |
| Destructor. More... | |
Protected Member Functions | |
| virtual void | paintEvent (QPaintEvent *) QWT_OVERRIDE |
| virtual void | resizeEvent (QResizeEvent *) QWT_OVERRIDE |
Private Attributes | |
| PrivateData * | m_data |
Detailed Description
Canvas of a QwtPolarPlot.
The canvas is the widget, where all polar items are painted to.
- Note
- In opposite to QwtPlot all axes are painted on the canvas.
- See also
- QwtPolarPlot
Definition at line 27 of file qwt_polar_canvas.h.
Member Enumeration Documentation
◆ PaintAttribute
Paint attributes.
The default setting enables BackingStore
| Enumerator | |
|---|---|
| BackingStore | Paint double buffered and reuse the content of the pixmap buffer for some spontaneous repaints that happen when a plot gets unhidden, deiconified or changes the focus. |
Definition at line 40 of file qwt_polar_canvas.h.
Constructor & Destructor Documentation
◆ QwtPolarCanvas()
|
explicit |
Constructor.
Definition at line 77 of file qwt_polar_canvas.cpp.
◆ ~QwtPolarCanvas()
|
virtual |
Destructor.
Definition at line 91 of file qwt_polar_canvas.cpp.
Member Function Documentation
◆ backingStore()
| const QPixmap * QwtPolarCanvas::backingStore | ( | ) | const |
- Returns
- Backing store, might be null
Definition at line 170 of file qwt_polar_canvas.cpp.
◆ invalidateBackingStore()
| void QwtPolarCanvas::invalidateBackingStore | ( | ) |
Invalidate the internal backing store.
Definition at line 176 of file qwt_polar_canvas.cpp.
◆ invTransform()
| QwtPointPolar QwtPolarCanvas::invTransform | ( | const QPoint & | pos | ) | const |
Translate a point from widget into plot coordinates
- Parameters
-
pos Point in widget coordinates of the plot canvas
- Returns
- Point in plot coordinates
- See also
- transform()
Definition at line 267 of file qwt_polar_canvas.cpp.
◆ paintEvent()
|
protectedvirtual |
◆ plot() [1/2]
| const QwtPolarPlot * QwtPolarCanvas::plot | ( | ) |
- Returns
- Parent plot widget
Definition at line 97 of file qwt_polar_canvas.cpp.
◆ plot() [2/2]
| const QwtPolarPlot* QwtPolarCanvas::plot | ( | ) | const |
◆ resizeEvent()
|
protectedvirtual |
◆ setPaintAttribute()
| void QwtPolarCanvas::setPaintAttribute | ( | PaintAttribute | attribute, |
| bool | on = true |
||
| ) |
Changing the paint attributes.
- Parameters
-
attribute Paint attribute on On/Off
The default setting enables BackingStore
- See also
- testPaintAttribute(), paintCache()
Definition at line 118 of file qwt_polar_canvas.cpp.
◆ testPaintAttribute()
| bool QwtPolarCanvas::testPaintAttribute | ( | PaintAttribute | attribute | ) | const |
Test whether a paint attribute is enabled
- Parameters
-
attribute Paint attribute
- Returns
- true if the attribute is enabled
- See also
- setPaintAttribute()
Definition at line 164 of file qwt_polar_canvas.cpp.
◆ transform()
| QPoint QwtPolarCanvas::transform | ( | const QwtPointPolar & | polarPos | ) | const |
Translate a point from plot into widget coordinates
- Parameters
-
polarPos Point in plot coordinates
- Returns
- Point in widget coordinates
- See also
- transform()
Definition at line 310 of file qwt_polar_canvas.cpp.
Member Data Documentation
◆ m_data
|
private |
Definition at line 72 of file qwt_polar_canvas.h.
The documentation for this class was generated from the following files: