Rechercher une page de manuel
QwtPlotMarker
Langue: en
Version: 373767 (fedora - 01/12/10)
Section: 3 (Bibliothèques de fonctions)
Sommaire
- NAME
- SYNOPSIS
- Detailed Description
- Member Enumeration Documentation
- Constructor & Destructor Documentation
- Member Function Documentation
- QwtDoubleRect QwtPlotMarker::boundingRect () const [virtual]Returns:
- void QwtPlotMarker::draw (QPainter * painter, const QwtScaleMap & xMap, const QwtScaleMap & yMap, const QRect & canvasRect) const [virtual]Draw the marker
- void QwtPlotMarker::drawAt (QPainter * painter, const QRect & canvasRect, const QPoint & pos) const [protected]Draw the marker at a specific position
- QwtText QwtPlotMarker::label () constReturns:
- Qt::Alignment QwtPlotMarker::labelAlignment () constReturns:
- Qt::Orientation QwtPlotMarker::labelOrientation () constReturns:
- const QPen & QwtPlotMarker::linePen () constReturns:
- QwtPlotMarker::LineStyle QwtPlotMarker::lineStyle () constReturns:
- int QwtPlotMarker::rtti () const [virtual]Returns:
- void QwtPlotMarker::setLabel (const QwtText & label)
- void QwtPlotMarker::setLabelAlignment (Qt::Alignment align)
- void QwtPlotMarker::setLabelOrientation (Qt::Orientation orientation)
- void QwtPlotMarker::setLinePen (const QPen & pen)Specify a pen for the line.
- void QwtPlotMarker::setLineStyle (QwtPlotMarker::LineStyle st)
- void QwtPlotMarker::setSpacing (int spacing)
- void QwtPlotMarker::setSymbol (const QwtSymbol & s)
- void QwtPlotMarker::setValue (const QwtDoublePoint & pos)
- void QwtPlotMarker::setValue (double x, double y)
- void QwtPlotMarker::setXValue (double x)
- void QwtPlotMarker::setYValue (double y)
- int QwtPlotMarker::spacing () constReturns:
- const QwtSymbol & QwtPlotMarker::symbol () constReturns:
- QwtDoublePoint QwtPlotMarker::value () const
- double QwtPlotMarker::xValue () const
- double QwtPlotMarker::yValue () const
- Author
NAME
QwtPlotMarker -A class for drawing markers.
SYNOPSIS
#include <qwt_plot_marker.h>
Inherits QwtPlotItem.
Public Types
enum LineStyle { NoLine, HLine, VLine, Cross }
Public Member Functions
QwtPlotMarker ()
virtual ~QwtPlotMarker ()
virtual int rtti () const
double xValue () const
double yValue () const
QwtDoublePoint value () const
void setXValue (double)
void setYValue (double)
void setValue (double, double)
void setValue (const QwtDoublePoint &)
void setLineStyle (LineStyle st)
LineStyle lineStyle () const
void setLinePen (const QPen &p)
const QPen & linePen () const
void setSymbol (const QwtSymbol &s)
const QwtSymbol & symbol () const
void setLabel (const QwtText &)
QwtText label () const
void setLabelAlignment (Qt::Alignment)
Qt::Alignment labelAlignment () const
void setLabelOrientation (Qt::Orientation)
Qt::Orientation labelOrientation () const
void setSpacing (int)
int spacing () const
virtual void draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRect &) const
virtual QwtDoubleRect boundingRect () const
Protected Member Functions
void drawAt (QPainter *, const QRect &, const QPoint &) const
Detailed Description
A class for drawing markers.
A marker can be a horizontal line, a vertical line, a symbol, a label or any combination of them, which can be drawn around a center point inside a bounding rectangle.
The QwtPlotMarker::setSymbol() member assigns a symbol to the marker. The symbol is drawn at the specified point.
With QwtPlotMarker::setLabel(), a label can be assigned to the marker. The QwtPlotMarker::setLabelAlignment() member specifies where the label is drawn. All the Align*-constants in Qt::AlignmentFlags (see Qt documentation) are valid. The interpretation of the alignment depends on the marker's line style. The alignment refers to the center point of the marker, which means, for example, that the label would be printed left above the center point if the alignment was set to AlignLeft|AlignTop.
Member Enumeration Documentation
enum QwtPlotMarker::LineStyleLine styles.
See also:
- setLineStyle(), lineStyle()
Constructor & Destructor Documentation
QwtPlotMarker::QwtPlotMarker () [explicit]
Sets alignment to Qt::AlignCenter, and style to NoLine.
QwtPlotMarker::~QwtPlotMarker () [virtual]
Destructor.
Member Function Documentation
QwtDoubleRect QwtPlotMarker::boundingRect () const [virtual]Returns:
- An invalid bounding rect: QwtDoubleRect(1.0, 1.0, -2.0, -2.0)
Reimplemented from QwtPlotItem.
void QwtPlotMarker::draw (QPainter * painter, const QwtScaleMap & xMap, const QwtScaleMap & yMap, const QRect & canvasRect) const [virtual]Draw the marker
Parameters:
- painter Painter
xMap x Scale Map
yMap y Scale Map
canvasRect Contents rect of the canvas in painter coordinates
Implements QwtPlotItem.
void QwtPlotMarker::drawAt (QPainter * painter, const QRect & canvasRect, const QPoint & pos) const [protected]Draw the marker at a specific position
Parameters:
- painter Painter
canvasRect Contents rect of the canvas in painter coordinates
pos Position of the marker in painter coordinates
QwtText QwtPlotMarker::label () constReturns:
- the label
See also:
- setLabel()
Qt::Alignment QwtPlotMarker::labelAlignment () constReturns:
- the label alignment
See also:
- setLabelAlignment(), setLabelOrientation()
Qt::Orientation QwtPlotMarker::labelOrientation () constReturns:
- the label orientation
See also:
- setLabelOrientation(), labelAlignment()
const QPen & QwtPlotMarker::linePen () constReturns:
- the line pen
See also:
- setLinePen()
QwtPlotMarker::LineStyle QwtPlotMarker::lineStyle () constReturns:
- the line style
See also:
- For a description of line styles, see QwtPlotMarker::setLineStyle()
int QwtPlotMarker::rtti () const [virtual]Returns:
- QwtPlotItem::Rtti_PlotMarker
Reimplemented from QwtPlotItem.
void QwtPlotMarker::setLabel (const QwtText & label)
Set the label. Parameters:
- label label text
See also:
- label()
void QwtPlotMarker::setLabelAlignment (Qt::Alignment align)
Set the alignment of the label. In case of QwtPlotMarker::HLine the alignment is relative to the y position of the marker, but the horizontal flags correspond to the canvas rectangle. In case of QwtPlotMarker::VLine the alignment is relative to the x position of the marker, but the vertical flags correspond to the canvas rectangle.
In all other styles the alignment is relative to the marker's position.
Parameters:
- align Alignment. A combination of AlignTop, AlignBottom, AlignLeft, AlignRight, AlignCenter, AlgnHCenter, AlignVCenter.
See also:
- labelAlignment(), labelOrientation()
void QwtPlotMarker::setLabelOrientation (Qt::Orientation orientation)
Set the orientation of the label. When orientation is Qt::Vertical the label is rotated by 90.0 degrees ( from bottom to top ).
Parameters:
- orientation Orientation of the label
See also:
- labelOrientation(), setLabelAlignment()
void QwtPlotMarker::setLinePen (const QPen & pen)Specify a pen for the line.
The width of non cosmetic pens is scaled according to the resolution of the paint device.
Parameters:
- pen New pen
See also:
- linePen(), QwtPainter::scaledPen()
void QwtPlotMarker::setLineStyle (QwtPlotMarker::LineStyle st)
Set the line style. Parameters:
- st Line style. Can be one of QwtPlotMarker::NoLine, HLine, VLine or Cross
See also:
- lineStyle()
void QwtPlotMarker::setSpacing (int spacing)
Set the spacing. When the label is not centered on the marker position, the spacing is the distance between the position and the label.
Parameters:
- spacing Spacing
See also:
- spacing(), setLabelAlignment()
void QwtPlotMarker::setSymbol (const QwtSymbol & s)
Assign a symbol. Parameters:
- s New symbol
See also:
- symbol()
void QwtPlotMarker::setValue (const QwtDoublePoint & pos)
Set Value.
void QwtPlotMarker::setValue (double x, double y)
Set Value.
void QwtPlotMarker::setXValue (double x)
Set X Value.
void QwtPlotMarker::setYValue (double y)
Set Y Value.
int QwtPlotMarker::spacing () constReturns:
- the spacing
See also:
- setSpacing()
const QwtSymbol & QwtPlotMarker::symbol () constReturns:
- the symbol
See also:
- setSymbol(), QwtSymbol
QwtDoublePoint QwtPlotMarker::value () const
Return Value.
double QwtPlotMarker::xValue () const
Return x Value.
double QwtPlotMarker::yValue () const
Return y Value.
Author
Generated automatically by Doxygen for Qwt User's Guide from the source code.
Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre