Qwt3DScale类 参考

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

#include <qwt3d_scale.h>

类 Qwt3DScale 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 Qwt3DScale *	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 Qwt3DScale &other)
	Copies Qwt3DScale base state from another Qwt3DScale

友元
class	Qwt3DAxis
class	Qwt3DClonePtr< Qwt3DScale >

详细描述

Non-visual scale class encapsulating tic generation

The class encapsulates non-visual scales. It is utilized by Qwt3DAxis and also collaborates closely with Qwt3DAutoScaler. A Qwt3DScale 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 Qwt3DAxis interface. User-defined axes can be derived from Qwt3DScale, Qwt3DLinearScale et al.

成员函数说明

autoscale()

int Qwt3DScale::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 Qwt3DLinearScale 重载.

calculate()

virtual void Qwt3DScale::calculate ( )

protectedpure virtual

在 Qwt3DLinearScale , 以及 Qwt3DLogScale 内被实现.

clone()

virtual Qwt3DScale * Qwt3DScale::clone ( ) const

protectedpure virtual

在 Qwt3DLinearScale , 以及 Qwt3DLogScale 内被实现.

copyFrom()

void Qwt3DScale::copyFrom ( const Qwt3DScale &  other )

protected

Copies Qwt3DScale base state from another Qwt3DScale

参数

other

Source Qwt3DScale to copy from

Used by derived class clone() implementations to copy the Qwt3DScale base data without requiring a copy constructor.

majors()

int Qwt3DScale::majors ( ) const

protected

Returns major intervals

返回

Number of major intervals

majorTicks()

const std::vector< double > & Qwt3DScale::majorTicks ( ) const

protected

Returns const reference to major tic positions

返回

Const reference to the vector of major tic positions

minors()

int Qwt3DScale::minors ( ) const

protected

Returns minor intervals

返回

Number of minor intervals

minorTicks()

const std::vector< double > & Qwt3DScale::minorTicks ( ) const

protected

Returns const reference to minor tic positions

返回

Const reference to the vector of minor tic positions

setLimits()

void Qwt3DScale::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 Qwt3DScale::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 Qwt3DScale::setMajors ( int  val )

protectedvirtual

Sets number of major intervals

参数

val	Number of major intervals

setMinors()

void Qwt3DScale::setMinors ( int  val )

protectedvirtual

Sets number of minor intervals per major interval

参数

val	Number of minor intervals

被 Qwt3DLogScale 重载.

ticLabel()

QString Qwt3DScale::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. Qwt3DLogScale::ticLabel.

被 Qwt3DLogScale 重载.

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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