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KDEUI

KDoubleNumInput Class Reference

An input control for real numbers, consisting of a spinbox and a slider. More...

#include <knuminput.h>

Inheritance diagram for KDoubleNumInput:
KNumInput QWidget

List of all members.

Public Slots

void setPrefix (const QString &prefix)
void setReferencePoint (double ref)
void setRelativeValue (double)
void setSuffix (const QString &suffix)
void setValue (double)

Signals

void relativeValueChanged (double)
void valueChanged (double)

Public Member Functions

int decimals () const
double exponentRatio () const
KDE_CONSTRUCTOR_DEPRECATED KDoubleNumInput (KNumInput *below, double lower, double upper, double value, QWidget *parent=0, double singleStep=0.02, int precision=2)
 KDoubleNumInput (double lower, double upper, double value, QWidget *parent=0, double singleStep=0.01, int precision=2)
 KDoubleNumInput (QWidget *parent=0)
double maximum () const
double minimum () const
virtual QSize minimumSizeHint () const
QString prefix () const
double referencePoint () const
double relativeValue () const
void setDecimals (int decimals)
void setExponentRatio (double dbl)
virtual void setLabel (const QString &label, Qt::Alignment a=Qt::AlignLeft|Qt::AlignTop)
void setMaximum (double max)
void setMinimum (double min)
KDE_DEPRECATED void setPrecision (int precision)
void setRange (double min, double max, double singleStep=1, bool slider=true)
void setSingleStep (double singleStep)
void setSliderEnabled (bool enabled)
void setSpecialValueText (const QString &text)
double singleStep () const
QString specialValueText () const
QString suffix () const
double value () const
virtual ~KDoubleNumInput ()

Protected Member Functions

virtual void doLayout ()
void resizeEvent (QResizeEvent *)

Properties

int decimals
double exponentRatio
double maximum
double minimum
QString prefix
double referencePoint
double relativeValue
double singleStep
bool sliderEnabled
QString specialValueText
QString suffix
double value

Detailed Description

An input control for real numbers, consisting of a spinbox and a slider.

KDoubleNumInput combines a QSpinBox and optionally a QSlider with a label to make an easy to use control for setting some float parameter. This is especially nice for configuration dialogs, which can have many such combinated controls.

The slider is created only when the user specifies a range for the control using the setRange function with the slider parameter set to "true".

A special feature of KDoubleNumInput, designed specifically for the situation when there are several instances in a column, is that you can specify what portion of the control is taken by the QSpinBox (the remaining portion is used by the slider). This makes it very simple to have all the sliders in a column be the same size.

It uses the KDoubleValidator validator class. KDoubleNumInput enforces the value to be in the given range, but see the class documentation of KDoubleSpinBox for the tricky interrelationship of precision and values. All of what is said there applies here, too.

See also:
KIntNumInput, KDoubleSpinBox

Definition at line 448 of file knuminput.h.


Constructor & Destructor Documentation

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

Constructs an input control for double values with initial value 0.00.

Definition at line 682 of file knuminput.cpp.

KDoubleNumInput::KDoubleNumInput ( double  lower,
double  upper,
double  value,
QWidget *  parent = 0,
double  singleStep = 0.01,
int  precision = 2 
)

Constructor.

Parameters:
lower lower boundary value
upper upper boundary value
value initial value for the control
singleStep step size to use for up/down arrow clicks
precision number of digits after the decimal point
parent parent QWidget

Definition at line 690 of file knuminput.cpp.

KDoubleNumInput::~KDoubleNumInput (  )  [virtual]

destructor

Definition at line 707 of file knuminput.cpp.

KDoubleNumInput::KDoubleNumInput ( KNumInput *  below,
double  lower,
double  upper,
double  value,
QWidget *  parent = 0,
double  singleStep = 0.02,
int  precision = 2 
)

Constructor.

the difference here is the "below" parameter. It tells this instance that it is visually put below some other KNumInput widget. Note that these two KNumInput's need not to have the same parent widget or be in the same layout group. The effect is that it'll adjust its layout in correspondence with the layout of the other KNumInput's (you can build an arbitrary long chain).

Parameters:
below append KDoubleNumInput to the KDoubleNumInput chain
lower lower boundary value
upper upper boundary value
value initial value for the control
singleStep step size to use for up/down arrow clicks
precision number of digits after the decimal point
parent parent QWidget
Deprecated:
use the version without below instead

Definition at line 698 of file knuminput.cpp.


Member Function Documentation

int KDoubleNumInput::decimals (  )  const
Returns:
number of decimals.
See also:
setDecimals()
void KDoubleNumInput::doLayout (  )  [protected, virtual]

You need to overwrite this method and implement your layout calculations there.

See KIntNumInput::doLayout and KDoubleNumInput::doLayout implementation for details.

Implements KNumInput.

Definition at line 860 of file knuminput.cpp.

double KDoubleNumInput::exponentRatio (  )  const
Returns:
the value of the exponent use to map the slider to the spin box.
double KDoubleNumInput::maximum (  )  const
Returns:
the maximum value.
double KDoubleNumInput::minimum (  )  const
Returns:
the minimum value.
QSize KDoubleNumInput::minimumSizeHint (  )  const [virtual]

Definition at line 791 of file knuminput.cpp.

QString KDoubleNumInput::prefix (  )  const
Returns:
the prefix.
See also:
setPrefix()
double KDoubleNumInput::referencePoint (  )  const
Returns:
the reference point for relativeValue calculation
double KDoubleNumInput::relativeValue (  )  const
Returns:
the current value in units of referencePoint.
void KDoubleNumInput::relativeValueChanged ( double   )  [signal]

This is an overloaded member function, provided for convenience.

It essentially behaves like the above function.

Contains the value in units of referencePoint.

void KDoubleNumInput::resizeEvent ( QResizeEvent *  e  )  [protected]

Definition at line 820 of file knuminput.cpp.

void KDoubleNumInput::setDecimals ( int  decimals  ) 

Specifies the number of digits to use.

Definition at line 1024 of file knuminput.cpp.

void KDoubleNumInput::setExponentRatio ( double  dbl  ) 
Parameters:
dbl the value of the exponent use to map the slider to the spin box (dbl need to be strictly positive).

Definition at line 1060 of file knuminput.cpp.

void KDoubleNumInput::setLabel ( const QString &  label,
Qt::Alignment  a = Qt::AlignLeft | Qt::AlignTop 
) [virtual]

Sets the text and alignment of the main description label.

Parameters:
label The text of the label. Use QString() to remove an existing one.
a The alignment of the label (Qt::Alignment). Default is Qt:AlignLeft | Qt:AlignTop.

The vertical alignment flags have special meaning with this widget:

  • Qt:AlignTop The label is placed above the edit/slider
  • Qt:AlignVCenter The label is placed left beside the edit
  • Qt:AlignBottom The label is placed below the edit/slider

Reimplemented from KNumInput.

Definition at line 1044 of file knuminput.cpp.

void KDoubleNumInput::setMaximum ( double  max  ) 

Sets the maximum value.

Definition at line 961 of file knuminput.cpp.

void KDoubleNumInput::setMinimum ( double  min  ) 

Sets the minimum value.

Definition at line 950 of file knuminput.cpp.

KDE_DEPRECATED void KDoubleNumInput::setPrecision ( int  precision  )  [inline]

Definition at line 590 of file knuminput.h.

void KDoubleNumInput::setPrefix ( const QString &  prefix  )  [slot]

Sets the prefix to be displayed to prefix.

Use QString() to disable this feature. Note that the prefix is attached to the value without any spacing.

See also:
setPrefix()

Definition at line 1017 of file knuminput.cpp.

void KDoubleNumInput::setRange ( double  min,
double  max,
double  singleStep = 1,
bool  slider = true 
)
Parameters:
min minimum value
max maximum value
singleStep step size for the QSlider
slider whether the slider is created or not

Definition at line 890 of file knuminput.cpp.

void KDoubleNumInput::setReferencePoint ( double  ref  )  [slot]

Sets the reference Point to ref.

It ref == 0, emitting of relativeValueChanged is blocked and relativeValue just returns 0.

Definition at line 883 of file knuminput.cpp.

void KDoubleNumInput::setRelativeValue ( double  r  )  [slot]

Sets the value in units of referencePoint.

Definition at line 873 of file knuminput.cpp.

void KDoubleNumInput::setSingleStep ( double  singleStep  ) 
Returns:
the step of the spin box

Definition at line 977 of file knuminput.cpp.

void KDoubleNumInput::setSliderEnabled ( bool  enabled  ) 
Parameters:
enabled Show the slider enabled

Definition at line 912 of file knuminput.cpp.

void KDoubleNumInput::setSpecialValueText ( const QString &  text  ) 

Sets the special value text.

If set, the spin box will display this text instead of the numeric value whenever the current value is equal to minVal(). Typically this is used for indicating that the choice has a special (default) meaning.

Definition at line 1036 of file knuminput.cpp.

void KDoubleNumInput::setSuffix ( const QString &  suffix  )  [slot]

Sets the suffix to be displayed to suffix.

Use QString() to disable this feature. Note that the suffix is attached to the value without any spacing. So if you prefer to display a space separator, set suffix to something like " cm".

See also:
setSuffix()

Definition at line 1010 of file knuminput.cpp.

void KDoubleNumInput::setValue ( double  val  )  [slot]

Sets the value of the control.

Definition at line 868 of file knuminput.cpp.

double KDoubleNumInput::singleStep (  )  const
Returns:
the step of the spin box
QString KDoubleNumInput::specialValueText (  )  const
Returns:
the string displayed for a special value.
See also:
setSpecialValueText()
QString KDoubleNumInput::suffix (  )  const
Returns:
the suffix.
See also:
setSuffix()
double KDoubleNumInput::value (  )  const
Returns:
the current value.
void KDoubleNumInput::valueChanged ( double   )  [signal]

Emitted every time the value changes (by calling setValue() or by user interaction).


Property Documentation

int KDoubleNumInput::decimals [read, write]

Definition at line 458 of file knuminput.h.

double KDoubleNumInput::exponentRatio [read, write]

Definition at line 462 of file knuminput.h.

double KDoubleNumInput::maximum [read, write]

Definition at line 453 of file knuminput.h.

double KDoubleNumInput::minimum [read, write]

Definition at line 452 of file knuminput.h.

QString KDoubleNumInput::prefix [read, write]

Definition at line 456 of file knuminput.h.

double KDoubleNumInput::referencePoint [read, write]

Definition at line 459 of file knuminput.h.

double KDoubleNumInput::relativeValue [read, write]

Definition at line 460 of file knuminput.h.

double KDoubleNumInput::singleStep [read, write]

Definition at line 454 of file knuminput.h.

bool KDoubleNumInput::sliderEnabled [read, write]

Definition at line 461 of file knuminput.h.

QString KDoubleNumInput::specialValueText [read, write]

Definition at line 457 of file knuminput.h.

QString KDoubleNumInput::suffix [read, write]

Definition at line 455 of file knuminput.h.

double KDoubleNumInput::value [read, write]

Definition at line 451 of file knuminput.h.


The documentation for this class was generated from the following files:
  • knuminput.h
  • knuminput.cpp

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