PlotCurve::PlotCurve(const QString& name): QwtPlotCurve(name),
d_type(0),
d_plot_style(0),
d_x_offset(0.0),
d_y_offset(0.0)
{
setPaintAttribute(PaintFiltered);
setPaintAttribute(ClipPolygons);
setCurveAttribute(QwtPlotCurve::Fitted, false);
}
/*!
\brief Constructor
\param plot Parent plot widget
*/
QwtPlotCanvas::QwtPlotCanvas( QwtPlot *plot ):
QFrame( plot )
{
d_data = new PrivateData;
#ifndef QT_NO_CURSOR
setCursor( Qt::CrossCursor );
#endif
setAutoFillBackground( true );
setPaintAttribute( QwtPlotCanvas::BackingStore, true );
setPaintAttribute( QwtPlotCanvas::Opaque, true );
setPaintAttribute( QwtPlotCanvas::HackStyledBackground, true );
}
QwtPlotCanvas::QwtPlotCanvas( QwtPlot *plot ):
QFrame( plot )
{
d_data = new PrivateData;
setAutoFillBackground( true );
#ifndef QT_NO_CURSOR
setCursor( Qt::CrossCursor );
#endif
setPaintAttribute( PaintCached, true );
setPaintAttribute( PaintPacked, true );
}
//! Constructor
QwtPolarCanvas::QwtPolarCanvas( QwtPolarPlot *plot ):
QFrame( plot )
{
d_data = new PrivateData;
#if QT_VERSION >= 0x040100
setAutoFillBackground( false );
#endif
#if QT_VERSION < 0x040000
setBackgroundMode( Qt::NoBackground );
#ifndef QT_NO_CURSOR
setWFlags( Qt::WNoAutoErase );
setCursor( Qt::crossCursor );
#endif
setFocusPolicy( QWidget::WheelFocus );
#else
setAttribute( Qt::WA_NoSystemBackground, true );
#ifndef QT_NO_CURSOR
setCursor( Qt::CrossCursor );
#endif
setFocusPolicy( Qt::WheelFocus );
#endif // >= 0x040000
setPaintAttribute( PaintCached, true );
}
QwtPlotCanvas::QwtPlotCanvas(QwtPlot *plot):
QFrame(plot)
{
d_data = new PrivateData;
#if QT_VERSION >= 0x040100
setAutoFillBackground(true);
#endif
#if QT_VERSION < 0x040000
setWFlags(Qt::WNoAutoErase);
#ifndef QT_NO_CURSOR
setCursor(Qt::crossCursor);
#endif
#else
#ifndef QT_NO_CURSOR
setCursor(Qt::CrossCursor);
#endif
#endif // >= 0x040000
setPaintAttribute(PaintCached, true);
setPaintAttribute(PaintPacked, true);
}
Canvas( QwtPlot *plot = NULL ):
QwtPlotCanvas( plot )
{
// The backing store is important, when working with widget
// overlays ( f.e rubberbands for zooming ).
// Here we don't have them and the internal
// backing store of QWidget is good enough.
setPaintAttribute( QwtPlotCanvas::BackingStore, false );
setBorderRadius( 10 );
if ( QwtPainter::isX11GraphicsSystem() )
{
#if QT_VERSION < 0x050000
// Even if not liked by the Qt development, Qt::WA_PaintOutsidePaintEvent
// works on X11. This has a nice effect on the performance.
setAttribute( Qt::WA_PaintOutsidePaintEvent, true );
#endif
// Disabling the backing store of Qt improves the performance
// for the direct painter even more, but the canvas becomes
// a native window of the window system, receiving paint events
// for resize and expose operations. Those might be expensive
// when there are many points and the backing store of
// the canvas is disabled. So in this application
// we better don't disable both backing stores.
if ( testPaintAttribute( QwtPlotCanvas::BackingStore ) )
{
setAttribute( Qt::WA_PaintOnScreen, true );
setAttribute( Qt::WA_NoSystemBackground, true );
}
}
setupPalette();
}
/*!
Set the background brush
\param brush Background brush
\sa backgroundBrush(), setBorderPen()
*/
void QwtText::setBackgroundBrush( const QBrush &brush )
{
d_data->backgroundBrush = brush;
setPaintAttribute( PaintBackground );
}
/*!
Set the background pen
\param pen Background pen
\sa borderPen(), setBackgroundBrush()
*/
void QwtText::setBorderPen( const QPen &pen )
{
d_data->borderPen = pen;
setPaintAttribute( PaintBackground );
}
/*!
Set the pen color used for drawing the text.
\param color Color
\note Setting the color might have no effect, when
the text contains control sequences for setting colors.
*/
void QwtText::setColor( const QColor &color )
{
d_data->color = color;
setPaintAttribute( PaintUsingTextColor );
}
/*!
Set the font.
\param font Font
\note Setting the font might have no effect, when
the text contains control sequences for setting fonts.
*/
void QwtText::setFont( const QFont &font )
{
d_data->font = font;
setPaintAttribute( PaintUsingTextFont );
}