KDoubleNumInput Class Reference

#include <knuminput.h>

Inheritance diagram for KDoubleNumInput:

KNumInput QWidget List of all members.

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 432 of file knuminput.h.


Public Slots

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

Signals

void valueChanged (double)
void relativeValueChanged (double)

Public Member Functions

 KDoubleNumInput (QWidget *parent=0, const char *name=0)
 KDoubleNumInput (double value, QWidget *parent=0, const char *name=0) KDE_DEPRECATED
 KDoubleNumInput (double lower, double upper, double value, double step=0.01, int precision=2, QWidget *parent=0, const char *name=0)
virtual ~KDoubleNumInput ()
 KDoubleNumInput (KNumInput *below, double value, QWidget *parent=0, const char *name=0) KDE_DEPRECATED
 KDoubleNumInput (KNumInput *below, double lower, double upper, double value, double step=0.02, int precision=2, QWidget *parent=0, const char *name=0)
double value () const
QString suffix () const
QString prefix () const
int precision () const
QString specialValueText () const
void setRange (double min, double max, double step=1, bool slider=true)
void setMinValue (double min)
double minValue () const
void setMaxValue (double max)
double maxValue () const
void setPrecision (int precision)
double referencePoint () const
double relativeValue () const
void setSpecialValueText (const QString &text)
virtual void setLabel (const QString &label, int a=AlignLeft|AlignTop)
virtual QSize minimumSizeHint () const
virtual bool eventFilter (QObject *, QEvent *)

Protected Member Functions

virtual void doLayout ()
void resizeEvent (QResizeEvent *)
virtual void resetEditBox ()
virtual void virtual_hook (int id, void *data)

Protected Attributes

KDoubleLine * edit
bool m_range
double m_lower
double m_upper
double m_step
QSize m_sizeEdit

Properties

double value []
double minValue []
double maxValue []
QString suffix []
QString prefix []
QString specialValueText []
int precision []
double referencePoint []
double relativeValue []

Friends

class KDoubleLine

Constructor & Destructor Documentation

KDoubleNumInput::KDoubleNumInput ( QWidget parent = 0,
const char *  name = 0 
)

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

Definition at line 544 of file knuminput.cpp.

KDoubleNumInput::KDoubleNumInput ( double  value,
QWidget parent = 0,
const char *  name = 0 
)

Deprecated:
(value is rounded to a multiple of 1/100) Constructor
Parameters:
value initial value for the control
parent parent QWidget
name internal name for this widget

Definition at line 567 of file knuminput.cpp.

KDoubleNumInput::KDoubleNumInput ( double  lower,
double  upper,
double  value,
double  step = 0.01,
int  precision = 2,
QWidget parent = 0,
const char *  name = 0 
)

Constructor.

Parameters:
lower lower boundary value
upper upper boundary value
value initial value for the control
step step size to use for up/down arrow clicks
precision number of digits after the decimal point
parent parent QWidget
name internal name for this widget
Since:
3.1

Definition at line 550 of file knuminput.cpp.

KDoubleNumInput::~KDoubleNumInput (  )  [virtual]

destructor

Definition at line 580 of file knuminput.cpp.

KDoubleNumInput::KDoubleNumInput ( KNumInput below,
double  value,
QWidget parent = 0,
const char *  name = 0 
)

Deprecated:
(rounds value to a multiple of 1/100) Constructor
puts it visually below other KNumInput

Parameters:
below 
value initial value for the control
parent parent QWidget
name internal name for this widget

Definition at line 573 of file knuminput.cpp.

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

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 it's 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
step step size to use for up/down arrow clicks
precision number of digits after the decimal point
parent parent QWidget
name internal name for this widget
Since:
3.1

Definition at line 558 of file knuminput.cpp.


Member Function Documentation

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 720 of file knuminput.cpp.

double KDoubleNumInput::maxValue (  )  const

Returns:
the maximum value.

double KDoubleNumInput::minValue (  )  const

Returns:
the minimum value.

int KDoubleNumInput::precision (  )  const

Returns:
the precision.
See also:
setPrecision()

QString KDoubleNumInput::prefix (  )  const

Returns:
the prefix.
See also:
setPrefix()

double KDoubleNumInput::referencePoint (  )  const

Returns:
the reference point for relativeValue calculation
Since:
3.1

double KDoubleNumInput::relativeValue (  )  const

Returns:
the current value in units of referencePoint.
Since:
3.1

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.

Since:
3.1

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

Sets the text and alignment of the main description label.

Parameters:
label The text of the label. Use QString::null to remove an existing one.
a one of AlignLeft, AlignHCenter, YAlignRight and AlignTop, AlignVCenter, AlignBottom. default is AlignLeft | AlignTop.
The vertical alignment flags have special meaning with this widget:

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

Reimplemented from KNumInput.

Definition at line 873 of file knuminput.cpp.

void KDoubleNumInput::setMaxValue ( double  max  ) 

Sets the maximum value.

Definition at line 803 of file knuminput.cpp.

void KDoubleNumInput::setMinValue ( double  min  ) 

Sets the minimum value.

Definition at line 793 of file knuminput.cpp.

void KDoubleNumInput::setPrecision ( int  precision  ) 

Specifies the number of digits to use.

Definition at line 853 of file knuminput.cpp.

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

Sets the prefix to be displayed to prefix.

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

See also:
setPrefix()

Definition at line 846 of file knuminput.cpp.

void KDoubleNumInput::setRange ( double  min,
double  max,
double  step = 1,
bool  slider = true 
)

Parameters:
min minimum value
max maximum value
step step size for the QSlider
slider whether the slider is created or not

Definition at line 746 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.

Since:
3.1

Definition at line 739 of file knuminput.cpp.

void KDoubleNumInput::setRelativeValue ( double   )  [slot]

Sets the value in units of referencePoint.

Since:
3.1

Definition at line 731 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 865 of file knuminput.cpp.

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

Sets the suffix to be displayed to suffix.

Use QString::null 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 839 of file knuminput.cpp.

void KDoubleNumInput::setValue ( double   )  [slot]

Sets the value of the control.

Definition at line 726 of file knuminput.cpp.

QString KDoubleNumInput::specialValueText (  )  const [inline]

Returns:
the string displayed for a special value.
See also:
setSpecialValueText()

Definition at line 547 of file knuminput.h.

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).


The documentation for this class was generated from the following files:
KDE Home | KDE Accessibility Home | Description of Access Keys