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Qwt User's Guide 6.3.0
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Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas. More...
#include <qwt_plot_abstract_canvas.h>
Public Types | |
| enum | PaintAttribute { BackingStore = 1 , ImmediatePaint = 8 } |
| Paint attributes. More... | |
| typedef QFlags< PaintAttribute > | PaintAttributes |
| Paint attributes. | |
Public Types inherited from QwtPlotAbstractCanvas | |
| enum | FocusIndicator { NoFocusIndicator , CanvasFocusIndicator , ItemFocusIndicator } |
| Focus indicator The default setting is NoFocusIndicator. More... | |
Public Member Functions | |
| QwtPlotAbstractGLCanvas (QWidget *canvasWidget) | |
| Constructor. | |
| virtual | ~QwtPlotAbstractGLCanvas () |
| Destructor. | |
| void | setPaintAttribute (PaintAttribute, bool on=true) |
| Changing the paint attributes. | |
| bool | testPaintAttribute (PaintAttribute) const |
| void | setFrameStyle (int style) |
| int | frameStyle () const |
| void | setFrameShadow (QFrame::Shadow) |
| QFrame::Shadow | frameShadow () const |
| void | setFrameShape (QFrame::Shape) |
| QFrame::Shape | frameShape () const |
| void | setLineWidth (int) |
| int | lineWidth () const |
| void | setMidLineWidth (int) |
| int | midLineWidth () const |
| int | frameWidth () const |
| QRect | frameRect () const |
| virtual void | invalidateBackingStore ()=0 |
| Invalidate the internal backing store. | |
Public Member Functions inherited from QwtPlotAbstractCanvas | |
| QwtPlotAbstractCanvas (QWidget *canvasWidget) | |
| Constructor. | |
| virtual | ~QwtPlotAbstractCanvas () |
| Destructor. | |
| QwtPlot * | plot () |
| Return parent plot widget. | |
| const QwtPlot * | plot () const |
| Return parent plot widget. | |
| void | setFocusIndicator (FocusIndicator) |
| FocusIndicator | focusIndicator () const |
| void | setBorderRadius (double) |
| double | borderRadius () const |
Protected Member Functions | |
| void | replot () |
| void | draw (QPainter *) |
| Helper function for the derived plot canvas. | |
Protected Member Functions inherited from QwtPlotAbstractCanvas | |
| QWidget * | canvasWidget () |
| const QWidget * | canvasWidget () const |
| virtual void | drawFocusIndicator (QPainter *) |
| virtual void | drawBorder (QPainter *) |
| virtual void | drawBackground (QPainter *) |
| Helper function for the derived plot canvas. | |
| void | fillBackground (QPainter *) |
| Helper function for the derived plot canvas. | |
| void | drawCanvas (QPainter *) |
| Draw the plot to the canvas. | |
| void | drawStyled (QPainter *, bool) |
| Helper function for the derived plot canvas. | |
| void | drawUnstyled (QPainter *) |
| Helper function for the derived plot canvas. | |
| QPainterPath | canvasBorderPath (const QRect &rect) const |
| void | updateStyleSheetInfo () |
| Update the cached information about the current style sheet. | |
Base class of QwtPlotOpenGLCanvas and QwtPlotGLCanvas.
Definition at line 87 of file qwt_plot_abstract_canvas.h.
| typedef QFlags<PaintAttribute > QwtPlotAbstractGLCanvas::PaintAttributes |
Paint attributes.
An ORed combination of PaintAttribute values.
Definition at line 122 of file qwt_plot_abstract_canvas.h.
Paint attributes.
The default setting enables BackingStore and Opaque.
| Enumerator | |
|---|---|
| BackingStore | Paint double buffered reusing the content of the pixmap buffer when possible. Using a backing store might improve the performance significantly, when working with widget overlays ( like rubber bands ). Disabling the cache might improve the performance for incremental paints (using QwtPlotDirectPainter ).
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| ImmediatePaint | When ImmediatePaint is set replot() calls repaint() instead of update().
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Definition at line 97 of file qwt_plot_abstract_canvas.h.
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explicit |
Constructor.
| canvasWidget | plot canvas widget |
Definition at line 904 of file qwt_plot_abstract_canvas.cpp.
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virtual |
Destructor.
Definition at line 914 of file qwt_plot_abstract_canvas.cpp.
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protected |
Helper function for the derived plot canvas.
Definition at line 1112 of file qwt_plot_abstract_canvas.cpp.
| QRect QwtPlotAbstractGLCanvas::frameRect | ( | ) | const |
Definition at line 1105 of file qwt_plot_abstract_canvas.cpp.
| QFrame::Shadow QwtPlotAbstractGLCanvas::frameShadow | ( | ) | const |
Definition at line 1000 of file qwt_plot_abstract_canvas.cpp.
| QFrame::Shape QwtPlotAbstractGLCanvas::frameShape | ( | ) | const |
Definition at line 1020 of file qwt_plot_abstract_canvas.cpp.
| int QwtPlotAbstractGLCanvas::frameStyle | ( | ) | const |
Definition at line 980 of file qwt_plot_abstract_canvas.cpp.
| int QwtPlotAbstractGLCanvas::frameWidth | ( | ) | const |
Definition at line 1084 of file qwt_plot_abstract_canvas.cpp.
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pure virtual |
Invalidate the internal backing store.
Implemented in QwtPlotGLCanvas, and QwtPlotOpenGLCanvas.
| int QwtPlotAbstractGLCanvas::lineWidth | ( | ) | const |
Definition at line 1048 of file qwt_plot_abstract_canvas.cpp.
| int QwtPlotAbstractGLCanvas::midLineWidth | ( | ) | const |
Definition at line 1076 of file qwt_plot_abstract_canvas.cpp.
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protected |
Invalidate the paint cache and repaint the canvas
Definition at line 1093 of file qwt_plot_abstract_canvas.cpp.
| void QwtPlotAbstractGLCanvas::setFrameShadow | ( | QFrame::Shadow | shadow | ) |
Set the frame shadow
| shadow | Frame shadow |
Definition at line 991 of file qwt_plot_abstract_canvas.cpp.
| void QwtPlotAbstractGLCanvas::setFrameShape | ( | QFrame::Shape | shape | ) |
Set the frame shape
| shape | Frame shape |
Definition at line 1011 of file qwt_plot_abstract_canvas.cpp.
| void QwtPlotAbstractGLCanvas::setFrameStyle | ( | int | style | ) |
Set the frame style
| style | The bitwise OR between a shape and a shadow. |
Definition at line 965 of file qwt_plot_abstract_canvas.cpp.
| void QwtPlotAbstractGLCanvas::setLineWidth | ( | int | width | ) |
Set the frame line width
The default line width is 2 pixels.
| width | Line width of the frame |
Definition at line 1033 of file qwt_plot_abstract_canvas.cpp.
| void QwtPlotAbstractGLCanvas::setMidLineWidth | ( | int | width | ) |
Set the frame mid line width
The default midline width is 0 pixels.
| width | Midline width of the frame |
Definition at line 1061 of file qwt_plot_abstract_canvas.cpp.
| void QwtPlotAbstractGLCanvas::setPaintAttribute | ( | PaintAttribute | attribute, |
| bool | on = true ) |
Changing the paint attributes.
| attribute | Paint attribute |
| on | On/Off |
Definition at line 927 of file qwt_plot_abstract_canvas.cpp.
| bool QwtPlotAbstractGLCanvas::testPaintAttribute | ( | PaintAttribute | attribute | ) | const |
Test whether a paint attribute is enabled
| attribute | Paint attribute |
Definition at line 952 of file qwt_plot_abstract_canvas.cpp.