A special scale draw made for QwtCompass 更多...

#include <qwt_compass.h>

类 QwtCompassScaleDraw 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtCompassScaleDraw ()
	Constructor

	QwtCompassScaleDraw (const QMap< double, QString > &map)

void	setLabelMap (const QMap< double, QString > &map)
	Set a map, mapping values to labels

QMap< double, QString >	labelMap () const
	Get the map, mapping values to labels

virtual QwtText	label (double value) const override
	Map a value to a corresponding label

Public 成员函数继承自 QwtRoundScaleDraw
	QwtRoundScaleDraw ()
	Constructor

	~QwtRoundScaleDraw () override
	Destructor

void	setRadius (double radius)
	Set the radius

double	radius () const
	Get the radius

void	moveCenter (double x, double y)
	Move the center

void	moveCenter (const QPointF &)
	Move the center

QPointF	center () const
	Get the center of the scale

void	setAngleRange (double angle1, double angle2)
	Set the angle range

virtual double	extent (const QFont &) const override
	Calculate the extent of the scale

Public 成员函数继承自 QwtAbstractScaleDraw
	QwtAbstractScaleDraw ()
	Constructor for QwtAbstractScaleDraw

void	setScaleDiv (const QwtScaleDiv &)
	Set the scale division

const QwtScaleDiv &	scaleDiv () const
	Return the scale division

void	setTransformation (QwtTransform *)
	Set the scale transformation

const QwtScaleMap &	scaleMap () const
	Return the scale map (const version)

QwtScaleMap &	scaleMap ()
	Return the scale map (non-const version)

void	enableComponent (ScaleComponent, bool enable=true)
	Enable or disable a scale component

bool	hasComponent (ScaleComponent) const
	Check if a component is enabled

void	setTickLength (QwtScaleDiv::TickType, double length)
	Set the length of the ticks

double	tickLength (QwtScaleDiv::TickType) const
	Get the length of the ticks

double	maxTickLength () const
	Get the length of the longest tick

void	setSpacing (double)
	Set the spacing between tick and labels

double	spacing () const
	Get the spacing

void	setPenWidthF (qreal width)
	Specify the width of the scale pen

qreal	penWidthF () const
	Get the scale pen width

void	setSelected (bool on)
	Set whether the scale draw is selected

bool	isSelected () const
	Check if the scale draw is selected

void	setSelectedPenWidthOffset (qreal offset=1)
	Set the pen width offset for the axis when it is in selected state

qreal	selectedPenWidthOffset () const
	Get the current pen width offset for the axis when it is in selected state

virtual void	draw (QPainter *, const QPalette &) const
	Draw the scale

void	setMinimumExtent (double)
	Set a minimum for the extent

double	minimumExtent () const
	Get the minimum extent

void	invalidateCache ()
	Invalidate the cache used by tickLabel()

额外继承的成员函数
Public 类型继承自 QwtAbstractScaleDraw
enum	ScaleComponent { Backbone = 0x01 , Ticks = 0x02 , Labels = 0x04 }
	Components of a scale 更多...

Protected 成员函数继承自 QwtRoundScaleDraw
virtual void	drawTick (QPainter *, double value, double len) const override
	Draw a tick

virtual void	drawBackbone (QPainter *) const override
	Draws the baseline of the scale

virtual void	drawLabel (QPainter *, double value) const override
	Draws the label for a major scale tick

Protected 成员函数继承自 QwtAbstractScaleDraw
const QwtText &	tickLabel (const QFont &, double value) const
	Convert a value into its representing label and cache it

详细描述

A special scale draw made for QwtCompass

QwtCompassScaleDraw maps values to strings using a special map, that can be modified by the application. The default map consists of the labels N, NE, E, SE, S, SW, W, NW.

参见: QwtCompass

构造及析构函数说明

◆ QwtCompassScaleDraw()

QwtCompassScaleDraw::QwtCompassScaleDraw ( )

explicit

Constructor

Initializes a label map for multiples of 45 degrees. The default map consists of the labels N, NE, E, SE, S, SW, W, NW.

Constructor

参数

[in] map Value to label map

Destructor

成员函数说明

◆ label()

QwtText QwtCompassScaleDraw::label ( double value ) const

overridevirtual

Map a value to a corresponding label

参数

[in] value Value that will be mapped

label() looks in the labelMap() for a corresponding label for value or returns a null text.

返回: Label corresponding to the value, or null text if not found

参见: labelMap(), setLabelMap()

重载 QwtAbstractScaleDraw .

◆ labelMap()

QMap< double, QString > QwtCompassScaleDraw::labelMap ( ) const

Get the map, mapping values to labels

返回: Map, mapping values to labels

参见: setLabelMap()

◆ setLabelMap()

void QwtCompassScaleDraw::setLabelMap ( const QMap< double, QString > & map )

Set a map, mapping values to labels

参数

[in] map Value to label map

The values of the major ticks are found by looking into this map. The default map consists of the labels N, NE, E, SE, S, SW, W, NW.

警告: The map will have no effect for values that are no major tick values. Major ticks can be changed by QwtScaleDraw::setScale.

参见: labelMap(), scaleDraw(), setScale()

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_compass.h
/home/runner/work/QWT/QWT/src/plot/qwt_compass.cpp

类

Public 成员函数

额外继承的成员函数

详细描述

构造及析构函数说明

◆ QwtCompassScaleDraw()

成员函数说明

◆ label()

◆ labelMap()

◆ setLabelMap()