Qwt User's Guide  6.0.2
Static Public Member Functions
QwtPainter Class Reference

#include <qwt_painter.h>

List of all members.

Static Public Member Functions

static void drawColorBar (QPainter *painter, const QwtColorMap &, const QwtInterval &, const QwtScaleMap &, Qt::Orientation, const QRectF &)
static void drawEllipse (QPainter *, const QRectF &)
static void drawFocusRect (QPainter *, QWidget *)
static void drawFocusRect (QPainter *, QWidget *, const QRect &)
static void drawImage (QPainter *, const QRectF &, const QImage &)
static void drawLine (QPainter *, double x1, double y1, double x2, double y2)
static void drawLine (QPainter *, const QPointF &p1, const QPointF &p2)
static void drawLine (QPainter *, const QLineF &)
static void drawPath (QPainter *, const QPainterPath &)
static void drawPie (QPainter *, const QRectF &r, int a, int alen)
static void drawPixmap (QPainter *, const QRectF &, const QPixmap &)
static void drawPoint (QPainter *, double x, double y)
static void drawPoint (QPainter *, const QPointF &)
static void drawPolygon (QPainter *, const QPolygonF &pa)
static void drawPolyline (QPainter *, const QPolygonF &pa)
static void drawPolyline (QPainter *, const QPointF *, int pointCount)
static void drawRect (QPainter *, double x, double y, double w, double h)
static void drawRect (QPainter *, const QRectF &rect)
static void drawRoundedFrame (QPainter *, const QRectF &, double xRadius, double yRadius, const QPalette &, int lineWidth, int frameStyle)
static void drawSimpleRichText (QPainter *, const QRectF &, int flags, const QTextDocument &)
static void drawText (QPainter *, double x, double y, const QString &)
static void drawText (QPainter *, const QPointF &, const QString &)
static void drawText (QPainter *, double x, double y, double w, double h, int flags, const QString &)
static void drawText (QPainter *, const QRectF &, int flags, const QString &)
static void fillRect (QPainter *, const QRectF &, const QBrush &)
static bool isAligning (QPainter *painter)
static bool polylineSplitting ()
static bool roundingAlignment ()
static bool roundingAlignment (QPainter *)
static void setPolylineSplitting (bool)
static void setRoundingAlignment (bool)

Detailed Description

A collection of QPainter workarounds.


Member Function Documentation

void QwtPainter::drawColorBar ( QPainter *  painter,
const QwtColorMap colorMap,
const QwtInterval interval,
const QwtScaleMap scaleMap,
Qt::Orientation  orientation,
const QRectF &  rect 
)
static

Draw a color bar into a rectangle

Parameters:
painterPainter
colorMapColor map
intervalValue range
scaleMapScale map
orientationOrientation
rectTraget rectangle
void QwtPainter::drawRoundedFrame ( QPainter *  painter,
const QRectF &  rect,
double  xRadius,
double  yRadius,
const QPalette &  palette,
int  lineWidth,
int  frameStyle 
)
static

Draw a frame with rounded borders

Parameters:
painterPainter
rectFrame rectangle
xRadiusx-radius of the ellipses defining the corners
yRadiusy-radius of the ellipses defining the corners
paletteQPalette::WindowText is used for plain borders QPalette::Dark and QPalette::Light for raised or sunken borders
lineWidthLine width
frameStylebitwise OR“ed value of QFrame::Shape and QFrame::Shadow
void QwtPainter::drawSimpleRichText ( QPainter *  painter,
const QRectF &  rect,
int  flags,
const QTextDocument &  text 
)
static

Draw a text document into a rectangle

Parameters:
painterPainter
rectTraget rectangle
flagsAlignments/Text flags, see QPainter::drawText()
textText document
bool QwtPainter::isAligning ( QPainter *  painter)
static

Check if the painter is using a paint engine, that aligns coordinates to integers. Today these are all paint engines beside QPaintEngine::Pdf and QPaintEngine::SVG.

Parameters:
painterPainter
Returns:
true, when the paint engine is aligning
See also:
setRoundingAlignment()
bool QwtPainter::polylineSplitting ( )
inlinestatic

Returns whether line splitting for the raster paint engine is enabled.

See also:
setPolylineSplitting()
bool QwtPainter::roundingAlignment ( )
inlinestatic

Returns whether coordinates should be rounded, before they are painted to a paint engine that floors to integer values. For other paint engines this ( Pdf, SVG ), this flag has no effect.

See also:
setRoundingAlignment(), isAligning()
bool QwtPainter::roundingAlignment ( QPainter *  painter)
inlinestatic
Returns:
roundingAlignment() && isAligning(painter);
Parameters:
painterPainter
void QwtPainter::setPolylineSplitting ( bool  enable)
static

En/Disable line splitting for the raster paint engine.

The raster paint engine paints polylines of many points much faster when they are splitted in smaller chunks.

See also:
polylineSplitting()
void QwtPainter::setRoundingAlignment ( bool  enable)
static

Enable whether coordinates should be rounded, before they are painted to a paint engine that floors to integer values. For other paint engines this ( Pdf, SVG ), this flag has no effect. QwtPainter stores this flag only, the rounding itsself is done in the painting code ( f.e the plot items ).

The default setting is true.

See also:
roundingAlignment(), isAligning()