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QwtPainter(3)		       Qwt User's Guide			 QwtPainter(3)

NAME
       QwtPainter -

SYNOPSIS
       #include <qwt_painter.h>

   Static Public Member Functions
       static bool deviceClipping ()
       static const QRect & deviceClipRect ()
       static void drawColorBar (QPainter *painter, const QwtColorMap &, const
	   QwtDoubleInterval &, const QwtScaleMap &, Qt::Orientation, const
	   QRect &)
       static void drawEllipse (QPainter *, const QRect &)
       static void drawFocusRect (QPainter *, QWidget *)
       static void drawFocusRect (QPainter *, QWidget *, const QRect &)
       static void drawLine (QPainter *, int x1, int y1, int x2, int y2)
       static void drawLine (QPainter *, const QPoint &p1, const QPoint &p2)
       static void drawPie (QPainter *, const QRect &r, int a, int alen)
       static void drawPoint (QPainter *, int x, int y)
       static void drawPolygon (QPainter *, const QwtPolygon &pa)
       static void drawPolyline (QPainter *, const QwtPolygon &pa)
       static void drawRect (QPainter *, int x, int y, int w, int h)
       static void drawRect (QPainter *, const QRect &rect)
       static void drawRoundFrame (QPainter *, const QRect &, int width, const
	   QPalette &, bool sunken)
       static void drawSimpleRichText (QPainter *, const QRect &, int flags,
	   QTextDocument &)
       static void drawText (QPainter *, int x, int y, const QString &)
       static void drawText (QPainter *, const QPoint &, const QString &)
       static void drawText (QPainter *, int x, int y, int w, int h, int
	   flags, const QString &)
       static void drawText (QPainter *, const QRect &, int flags, const
	   QString &)
       static void fillRect (QPainter *, const QRect &, const QBrush &)
       static const QwtMetricsMap & metricsMap ()
       static void resetMetricsMap ()
       static QPen scaledPen (const QPen &)
       static void setClipRect (QPainter *, const QRect &)
       static void setDeviceClipping (bool)
       static void setMetricsMap (const QPaintDevice *layout, const
	   QPaintDevice *device)
       static void setMetricsMap (const QwtMetricsMap &)

Detailed Description
       A collection of QPainter workarounds.

       1) Clipping to coordinate system limits (Qt3 only)

       On X11 pixel coordinates are stored in shorts. Qt produces overruns
       when mapping QCOORDS to shorts.

       2) Scaling to device metrics

       QPainter scales fonts, line and fill patterns to the metrics of the
       paint device. Other values like the geometries of rects, points remain
       device independend. To enable a device independent widget
       implementation, QwtPainter adds scaling of these geometries.
       (Unfortunately QPainter::scale scales both types of paintings, so the
       objects of the first type would be scaled twice).

Member Function Documentation
   bool QwtPainter::deviceClipping () [inline],	 [static]
       Returns whether device clipping is enabled. On X11 the default is
       enabled, otherwise it is disabled.

       See also:
	   QwtPainter::setDeviceClipping()

   const QRect & QwtPainter::deviceClipRect () [static]
       Returns rect for device clipping

       See also:
	   QwtPainter::setDeviceClipping()

   void QwtPainter::drawEllipse (QPainter *painter, const QRect &rect)
       [static]
       Wrapper for QPainter::drawEllipse()

   void QwtPainter::drawLine (QPainter *painter, intx1, inty1, intx2, inty2)
       [static]
       Wrapper for QPainter::drawLine()

   void QwtPainter::drawPie (QPainter *painter, const QRect &rect, inta,
       intalen) [static]
       Wrapper for QPainter::drawPie()

   void QwtPainter::drawPoint (QPainter *painter, intx, inty) [static]
       Wrapper for QPainter::drawPoint()

   void QwtPainter::drawPolygon (QPainter *painter, const QwtPolygon &pa)
       [static]
       Wrapper for QPainter::drawPolygon()

   void QwtPainter::drawPolyline (QPainter *painter, const QwtPolygon &pa)
       [static]
       Wrapper for QPainter::drawPolyline()

   void QwtPainter::drawRect (QPainter *painter, intx, inty, intw, inth)
       [static]
       Wrapper for QPainter::drawRect()

   void QwtPainter::drawRect (QPainter *painter, const QRect &rect) [static]
       Wrapper for QPainter::drawRect()

   void QwtPainter::drawSimpleRichText (QPainter *painter, const QRect &rect,
       intflags, QTextDocument &text) [static]
       Wrapper for QSimpleRichText::draw()

   void QwtPainter::drawText (QPainter *painter, intx, inty, const QString
       &text) [static]
       Wrapper for QPainter::drawText()

   void QwtPainter::drawText (QPainter *painter, const QPoint &pos, const
       QString &text) [static]
       Wrapper for QPainter::drawText()

   void QwtPainter::drawText (QPainter *painter, intx, inty, intw, inth,
       intflags, const QString &text) [static]
       Wrapper for QPainter::drawText()

   void QwtPainter::drawText (QPainter *painter, const QRect &rect, intflags,
       const QString &text) [static]
       Wrapper for QPainter::drawText()

   void QwtPainter::fillRect (QPainter *painter, const QRect &rect, const
       QBrush &brush) [static]
       Wrapper for QPainter::fillRect()

   const QwtMetricsMap & QwtPainter::metricsMap () [static]
       Returns:
	   Metrics map

   void QwtPainter::resetMetricsMap () [static]
       Reset the metrics map to the ratio 1:1

       See also:
	   QwtPainter::setMetricsMap(), QwtPainter::resetMetricsMap()

   QPen QwtPainter::scaledPen (const QPen &pen) [static]
       Scale a pen according to the layout metrics. The width of non cosmetic
       pens is scaled from screen to layout metrics, so that they look similar
       on paint devices with different resolutions.

       Parameters:
	   pen Unscaled pen

       Returns:
	   Scaled pen

   void QwtPainter::setClipRect (QPainter *painter, const QRect &rect)
       [static]
       Wrapper for QPainter::setClipRect()

   void QwtPainter::setDeviceClipping (boolenable) [static]
       En/Disable device clipping. On X11 the default for device clipping is
       enabled, otherwise it is disabled.

       See also:
	   QwtPainter::deviceClipping()

   void QwtPainter::setMetricsMap (const QPaintDevice *layout, const
       QPaintDevice *device) [static]
       Scale all QwtPainter drawing operations using the ratio
       QwtPaintMetrics(from).logicalDpiX() / QwtPaintMetrics(to).logicalDpiX()
       and QwtPaintMetrics(from).logicalDpiY() /
       QwtPaintMetrics(to).logicalDpiY()

       See also:
	   QwtPainter::resetScaleMetrics(), QwtPainter::scaleMetricsX(),
	   QwtPainter::scaleMetricsY()

   void QwtPainter::setMetricsMap (const QwtMetricsMap &map) [static]
       Change the metrics map

       See also:
	   QwtPainter::resetMetricsMap(), QwtPainter::metricsMap()

Author
       Generated automatically by Doxygen for Qwt User's Guide from the source
       code.

Version 5.2.3			Tue Nov 20 2012			 QwtPainter(3)

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