Qwt3D::Scale类 参考

Non-visual scale class encapsulating tic generation 更多...

#include <qwt3d_scale.h>

类 Qwt3D::Scale 继承关系图:

类
class	PrivateData

Protected 成员函数
virtual QString	ticLabel (unsigned int idx) const
	Maps the double value at tic-position idx to a final representation
virtual void	setLimits (double start, double stop)
	Sets start and stop value for the scale
virtual void	setMajors (int val)
	Sets number of major intervals
virtual void	setMinors (int val)
	Sets number of minor intervals per major interval
virtual void	setMajorLimits (double start, double stop)
	Sets value of first and last major tic
int	majors () const
	Returns major intervals
int	minors () const
	Returns minor intervals
virtual Scale *	clone () const =0
virtual void	calculate ()=0
virtual int	autoscale (double &a, double &b, double start, double stop, int ivals)
	Autoscales the axis
const std::vector< double > &	majorTicks () const
	Returns const reference to major tic positions
const std::vector< double > &	minorTicks () const
	Returns const reference to minor tic positions
void	copyFrom (const Scale &other)
	Copies Scale base state from another Scale

友元
class	Axis
	Indices used to identify an axis.
class	ClonePtr< Scale >

详细描述

Non-visual scale class encapsulating tic generation

The class encapsulates non-visual scales. It is utilized by Axis and also collaborates closely with AutoScaler. A Scale allows control over all aspects of tic generation including arbitrary transformations of tic values into corresponding strings. The strings contain what eventually will be shown as tic labels. Standard linear and logarithmic scales have been integrated into the Axis interface. User-defined axes can be derived from Scale, LinearScale et al.

成员函数说明

autoscale()

int Scale::autoscale ( double &  a, double &  b, double  start, double  stop, int  ivals  )

protectedvirtual

Autoscales the axis

参数

[out]	a	First major tic after applying autoscaling
[out]	b	Last major tic after applying autoscaling
	start	Scale begin
	stop	Scale end
	ivals	Requested number of major intervals

返回

Number of major intervals after autoscaling

The default implementation sets a=start, b=stop and returns ivals.

被 Qwt3D::LinearScale 重载.

calculate()

virtual void Qwt3D::Scale::calculate ( )

protectedpure virtual

在 Qwt3D::LinearScale , 以及 Qwt3D::LogScale 内被实现.

clone()

virtual Scale * Qwt3D::Scale::clone ( ) const

protectedpure virtual

在 Qwt3D::LinearScale , 以及 Qwt3D::LogScale 内被实现.

copyFrom()

void Scale::copyFrom ( const Scale &  other )

protected

Copies Scale base state from another Scale

参数

other

Source Scale to copy from

Used by derived class clone() implementations to copy the Scale base data without requiring a copy constructor.

majors()

int Scale::majors ( ) const

protected

Returns major intervals

返回

Number of major intervals

majorTicks()

const std::vector< double > & Scale::majorTicks ( ) const

protected

Returns const reference to major tic positions

返回

Const reference to the vector of major tic positions

minors()

int Scale::minors ( ) const

protected

Returns minor intervals

返回

Number of minor intervals

minorTicks()

const std::vector< double > & Scale::minorTicks ( ) const

protected

Returns const reference to minor tic positions

返回

Const reference to the vector of minor tic positions

setLimits()

void Scale::setLimits ( double  start, double  stop  )

protectedvirtual

Sets start and stop value for the scale

参数

start	Scale start value
stop	Scale stop value

setMajorLimits()

void Scale::setMajorLimits ( double  start, double  stop  )

protectedvirtual

Sets value of first and last major tic

参数

start	First major tic value
stop	Last major tic value

setMajors()

void Scale::setMajors ( int  val )

protectedvirtual

Sets number of major intervals

参数

val	Number of major intervals

setMinors()

void Scale::setMinors ( int  val )

protectedvirtual

Sets number of minor intervals per major interval

参数

val	Number of minor intervals

被 Qwt3D::LogScale 重载.

ticLabel()

QString Scale::ticLabel ( unsigned int  idx ) const

protectedvirtual

Maps the double value at tic-position idx to a final representation

参数

idx	The current major tic index

返回

The QString representation for the value corresponding to a valid index, an empty QString else.

The default return value is simply the tic values QString representation. Overwrite this function, if you plan to transform the value in some way. See e.g. LogScale::ticLabel.

被 Qwt3D::LogScale 重载.

友元及相关函数文档

Axis

friend class Axis

friend

Indices used to identify an axis.

参见

Scale

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot3d/qwt3d_scale.h
• /home/runner/work/QWT/QWT/src/plot3d/qwt3d_scale.cpp