Canvas of a QwtPolarPlot. More...
#include <qwt_polar_canvas.h>

Public Types | |
| enum | PaintAttribute { BackingStore = 0x01 } |
| Paint attributes. More... | |
| typedef QFlags< PaintAttribute > | PaintAttributes |
| Paint attributes. | |
Public Member Functions | |
| QwtPolarCanvas (QwtPolarPlot *) | |
| Constructor. | |
| virtual | ~QwtPolarCanvas () |
| Destructor. | |
| QwtPolarPlot * | plot () |
| const QwtPolarPlot * | plot () const |
| void | setPaintAttribute (PaintAttribute, bool on=true) |
| Changing the paint attributes. More... | |
| bool | testPaintAttribute (PaintAttribute) const |
| const QPixmap * | backingStore () const |
| void | invalidateBackingStore () |
| Invalidate the internal backing store. | |
| QwtPointPolar | invTransform (const QPoint &) const |
| QPoint | transform (const QwtPointPolar &) const |
Protected Member Functions | |
| virtual void | paintEvent (QPaintEvent *) |
| virtual void | resizeEvent (QResizeEvent *) |
Canvas of a QwtPolarPlot.
The canvas is the widget, where all polar items are painted to.
| const QPixmap * QwtPolarCanvas::backingStore | ( | ) | const |
| QwtPointPolar QwtPolarCanvas::invTransform | ( | const QPoint & | pos | ) | const |
Translate a point from widget into plot coordinates
| pos | Point in widget coordinates of the plot canvas |
|
protectedvirtual |
Paint event
| event | Paint event |
| QwtPolarPlot * QwtPolarCanvas::plot | ( | ) |
| const QwtPolarPlot * QwtPolarCanvas::plot | ( | ) | const |
|
protectedvirtual |
Resize event
| event | Resize event |
| void QwtPolarCanvas::setPaintAttribute | ( | PaintAttribute | attribute, |
| bool | on = true |
||
| ) |
Changing the paint attributes.
| attribute | Paint attribute |
| on | On/Off |
The default setting enables BackingStore
| bool QwtPolarCanvas::testPaintAttribute | ( | PaintAttribute | attribute | ) | const |
Test wether a paint attribute is enabled
| attribute | Paint attribute |
| QPoint QwtPolarCanvas::transform | ( | const QwtPointPolar & | polarPos | ) | const |
Translate a point from plot into widget coordinates
| polarPos | Point in plot coordinates |
1.8.5