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QwtLegendItem

NAME

QwtLegendItem -

SYNOPSIS

Inherits QwtTextLabel.

Detailed Description

A legend label.

QwtLegendItem represents a curve on a legend. It displays an curve identifier with an explaining text. The identifier might be a combination of curve symbol and line. In readonly mode it behaves like a label, otherwise like an unstylish push button.

See also:

QwtLegend, QwtPlotCurve

Definition at line 35 of file qwt_legend_item.h.

Public Types

enum IdentifierMode { NoIdentifier = 0, ShowLine = 1, ShowSymbol = 2, ShowText = 4 }

Public Slots

void setChecked (bool on)

Signals

void clicked ()

void pressed ()

void released ()

void checked (bool)

Public Member Functions

QwtLegendItem (QWidget *parent=0)

QwtLegendItem (const QwtSymbol &, const QPen &, const QwtText &, QWidget *parent=0)

virtual ~QwtLegendItem ()

virtual void setText (const QwtText &)

void setItemMode (QwtLegend::LegendItemMode)

QwtLegend::LegendItemMode itemMode () const

void setIdentifierMode (int)

int identifierMode () const

void setIdentfierWidth (int width)

int identifierWidth () const

void setSpacing (int spacing)

int spacing () const

void setSymbol (const QwtSymbol &)

const QwtSymbol & symbol () const

void setCurvePen (const QPen &)

const QPen & curvePen () const

virtual void drawIdentifier (QPainter *, const QRect &) const

virtual void drawItem (QPainter *p, const QRect &) const

virtual QSize sizeHint () const

bool isChecked () const

Protected Member Functions

void setDown (bool)

bool isDown () const

virtual void paintEvent (QPaintEvent *)

virtual void mousePressEvent (QMouseEvent *)

virtual void mouseReleaseEvent (QMouseEvent *)

virtual void keyPressEvent (QKeyEvent *)

virtual void keyReleaseEvent (QKeyEvent *)

virtual void drawText (QPainter *, const QRect &)

Member Enumeration Documentation

enum QwtLegendItem::IdentifierMode

Identifier mode.

Default is ShowLine | ShowText

See also:

QwtLegendItem::identifierMode, QwtLegendItem::setIdentifierMode

Definition at line 47 of file qwt_legend_item.h.

Constructor & Destructor Documentation

QwtLegendItem::QwtLegendItem (QWidget * parent = 0) [explicit]

Parameters:

parent Parent widget

Definition at line 80 of file qwt_legend_item.cpp.

QwtLegendItem::QwtLegendItem (const QwtSymbol & symbol, const QPen & curvePen, const QwtText & text, QWidget * parent = 0) [explicit]

Parameters:

symbol Curve symbol
curvePen Curve pen
text Label text
parent Parent widget

Definition at line 93 of file qwt_legend_item.cpp.

References QwtSymbol::clone(), symbol(), and QwtTextLabel::text().

QwtLegendItem::~QwtLegendItem () [virtual]

Destructor.

Definition at line 116 of file qwt_legend_item.cpp.

Member Function Documentation

void QwtLegendItem::setText (const QwtText & text) [virtual]

Set the text to the legend item

Parameters:

text Text label

See also:

QwtTextLabel::text()

Reimplemented from QwtTextLabel.

Definition at line 128 of file qwt_legend_item.cpp.

References QwtText::setRenderFlags(), QwtTextLabel::setText(), and QwtTextLabel::text().

void QwtLegendItem::setItemMode (QwtLegend::LegendItemMode mode)

Set the item mode The default is QwtLegend::ReadOnlyItem

Parameters:

mode Item mode

See also:

itemMode()

Definition at line 150 of file qwt_legend_item.cpp.

References QwtTextLabel::setMargin().

QwtLegend::LegendItemMode QwtLegendItem::itemMode () const

Return the item mode

See also:

setItemMode()

Definition at line 169 of file qwt_legend_item.cpp.

void QwtLegendItem::setIdentifierMode (int mode)

Set identifier mode. Default is ShowLine | ShowText.

Parameters:

mode Or'd values of IdentifierMode

See also:

identifierMode()

Definition at line 181 of file qwt_legend_item.cpp.

int QwtLegendItem::identifierMode () const

Or'd values of IdentifierMode.

See also:

setIdentifierMode(), IdentifierMode

Definition at line 194 of file qwt_legend_item.cpp.

void QwtLegendItem::setIdentfierWidth (int width)

Set the width for the identifier Default is 8 pixels

Parameters:

width New width

See also:

identifierMode(), identifierWidth

Definition at line 207 of file qwt_legend_item.cpp.

References QwtTextLabel::margin(), and QwtTextLabel::setIndent().

int QwtLegendItem::identifierWidth () const

Return the width of the identifier

See also:

setIdentfierWidth

Definition at line 222 of file qwt_legend_item.cpp.

Referenced by drawItem().

void QwtLegendItem::setSpacing (int spacing)

Change the spacing

Parameters:

spacing Spacing

See also:

spacing(), identifierWidth(), QwtTextLabel::margin()

Definition at line 232 of file qwt_legend_item.cpp.

References QwtTextLabel::margin(), and QwtTextLabel::setIndent().

int QwtLegendItem::spacing () const

Return the spacing

See also:

setSpacing(), identifierWidth(), QwtTextLabel::margin()

Definition at line 247 of file qwt_legend_item.cpp.

Referenced by drawItem().

void QwtLegendItem::setSymbol (const QwtSymbol & symbol)

Set curve symbol.

Parameters:

symbol Symbol

See also:

symbol()

Definition at line 258 of file qwt_legend_item.cpp.

References QwtSymbol::clone(), and symbol().

const QwtSymbol & QwtLegendItem::symbol () const

Returns:

The curve symbol.

See also:

setSymbol()

Definition at line 269 of file qwt_legend_item.cpp.

Referenced by QwtLegendItem(), and setSymbol().

void QwtLegendItem::setCurvePen (const QPen & pen)

Set curve pen.

Parameters:

pen Curve pen

See also:

curvePen()

Definition at line 281 of file qwt_legend_item.cpp.

const QPen & QwtLegendItem::curvePen () const

Returns:

The curve pen.

See also:

setCurvePen()

Definition at line 294 of file qwt_legend_item.cpp.

void QwtLegendItem::drawIdentifier (QPainter * painter, const QRect & rect) const [virtual]

Paint the identifier to a given rect.

Parameters:

painter Painter
rect Rect where to paint

Definition at line 304 of file qwt_legend_item.cpp.

References QwtPainter::drawLine(), QwtPainter::metricsMap(), and QwtMetricsMap::screenToLayout().

Referenced by drawItem(), and paintEvent().

void QwtLegendItem::drawItem (QPainter * painter, const QRect & rect) const [virtual]

Draw the legend item to a given rect.

Parameters:

painter Painter
rect Rect where to paint the button

Definition at line 360 of file qwt_legend_item.cpp.

References QwtText::draw(), drawIdentifier(), identifierWidth(), QwtTextLabel::margin(), QwtPainter::metricsMap(), QwtMetricsMap::screenToLayoutX(), spacing(), and QwtTextLabel::text().

QSize QwtLegendItem::sizeHint () const [virtual]

Return a size hint.

Reimplemented from QwtTextLabel.

Definition at line 578 of file qwt_legend_item.cpp.

References QwtTextLabel::sizeHint().

bool QwtLegendItem::isChecked () const

Return true, if the item is checked.

Definition at line 542 of file qwt_legend_item.cpp.

References isDown().

void QwtLegendItem::setChecked (bool on) [slot]

Check/Uncheck a the item

Parameters:

on check/uncheck

See also:

setItemMode()

Definition at line 528 of file qwt_legend_item.cpp.

References setDown().

void QwtLegendItem::clicked () [signal]

Signal, when the legend item has been clicked.

Referenced by setDown().

void QwtLegendItem::pressed () [signal]

Signal, when the legend item has been pressed.

Referenced by setDown().

void QwtLegendItem::released () [signal]

Signal, when the legend item has been relased.

Referenced by setDown().

void QwtLegendItem::checked (bool) [signal]

Signal, when the legend item has been toggled.

Referenced by setDown().

void QwtLegendItem::setDown (bool) [protected]

Set the item being down.

Definition at line 548 of file qwt_legend_item.cpp.

References checked(), clicked(), pressed(), and released().

Referenced by keyPressEvent(), keyReleaseEvent(), mousePressEvent(), mouseReleaseEvent(), and setChecked().

bool QwtLegendItem::isDown () const [protected]

Return true, if the item is down.

Definition at line 572 of file qwt_legend_item.cpp.

Referenced by isChecked(), keyPressEvent(), and mousePressEvent().

void QwtLegendItem::paintEvent (QPaintEvent *) [protected, virtual]

Paint event.

Reimplemented from QwtTextLabel.

Definition at line 385 of file qwt_legend_item.cpp.

References QwtTextLabel::drawContents(), drawIdentifier(), and QwtTextLabel::margin().

void QwtLegendItem::mousePressEvent (QMouseEvent *) [protected, virtual]

Handle mouse press events.

Definition at line 428 of file qwt_legend_item.cpp.

References isDown(), and setDown().

void QwtLegendItem::mouseReleaseEvent (QMouseEvent *) [protected, virtual]

Handle mouse release events.

Definition at line 451 of file qwt_legend_item.cpp.

References setDown().

void QwtLegendItem::keyPressEvent (QKeyEvent *) [protected, virtual]

Handle key press events.

Definition at line 473 of file qwt_legend_item.cpp.

References isDown(), and setDown().

void QwtLegendItem::keyReleaseEvent (QKeyEvent *) [protected, virtual]

Handle key release events.

Definition at line 499 of file qwt_legend_item.cpp.

References setDown().

void QwtLegendItem::drawText (QPainter *, const QRect &) [protected, virtual]

Redraw the text.

Reimplemented from QwtTextLabel.

Definition at line 587 of file qwt_legend_item.cpp.

References QwtTextLabel::drawText().

Author

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