com.trolltech.qt.gui
Class QDoubleValidator

java.lang.Object
  extended by com.trolltech.qt.QSignalEmitter
      extended by com.trolltech.qt.QtJambiObject
          extended by com.trolltech.qt.core.QObject
              extended by com.trolltech.qt.gui.QValidator
                  extended by com.trolltech.qt.gui.QDoubleValidator
All Implemented Interfaces:
QtJambiInterface

public class QDoubleValidator
extends QValidator

The QDoubleValidator class provides range checking of floating-point numbers.

QDoubleValidator provides an upper bound, a lower bound, and a limit on the number of digits after the decimal point. It does not provide a fixup function.

You can set the acceptable range in one call with setRange, or with setBottom and setTop. Set the number of decimal places with setDecimals. The validate function returns the validation state.

QDoubleValidator uses its locale to interpret the number. For example, in the German locale, "1,234" will be accepted as the fractional number 1.234. In Arabic locales, QDoubleValidator will accept Arabic digits.

In addition, QDoubleValidator is always guaranteed to accept a number formatted according to the "C" locale. QDoubleValidator will not accept numbers with thousand-seperators.

See Also:
QIntValidator, QRegExpValidator, Line Edits Example

Nested Class Summary
static class QDoubleValidator.Notation
          This enum defines the allowed notations for entering a double.
 
Nested classes/interfaces inherited from class com.trolltech.qt.gui.QValidator
QValidator.QValidationData, QValidator.State
 
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
QSignalEmitter.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I>
 
Constructor Summary
QDoubleValidator(double bottom, double top, int decimals, QObject parent)
          Constructs a validator object with a parent object.
QDoubleValidator(QObject parent)
          Constructs a validator object with a parent object that accepts any double.
 
Method Summary
 double bottom()
          Returns the validator's minimum acceptable value.
 int decimals()
          Returns the validator's maximum number of digits after the decimal point.
static QDoubleValidator fromNativePointer(QNativePointer nativePointer)
          This function returns the QDoubleValidator instance pointed to by nativePointer
 QDoubleValidator.Notation notation()
          Returns the notation of how a string can describe a number.
 void setBottom(double arg__1)
          Sets the validator's minimum acceptable value to arg__1.
 void setDecimals(int arg__1)
          Sets the validator's maximum number of digits after the decimal point to arg__1.
 void setNotation(QDoubleValidator.Notation arg__1)
          Sets the notation of how a string can describe a number to arg__1.
 void setRange(double bottom, double top)
          Equivalent to setRange(bottom, top, 0).
 void setRange(double bottom, double top, int decimals)
          Sets the validator to accept doubles from bottom to top inclusive, with at most decimals digits after the decimal point.
 void setTop(double arg__1)
          Sets the validator's maximum acceptable value to arg__1.
 double top()
          Returns the validator's maximum acceptable value.
 QValidator.State validate(QValidator.QValidationData arg__1)
          Equivalent to validate(arg__1, ).
 
Methods inherited from class com.trolltech.qt.gui.QValidator
fixup, locale, setLocale
 
Methods inherited from class com.trolltech.qt.core.QObject
blockSignals, childEvent, children, connectSlotsByName, customEvent, disposeLater, dumpObjectInfo, dumpObjectTree, dynamicPropertyNames, event, eventFilter, findChild, findChild, findChild, findChildren, findChildren, findChildren, findChildren, installEventFilter, isWidgetType, killTimer, moveToThread, objectName, parent, property, removeEventFilter, setObjectName, setParent, setProperty, signalsBlocked, startTimer, thread, timerEvent
 
Methods inherited from class com.trolltech.qt.QtJambiObject
dispose, disposed, finalize, reassignNativeResources, tr, tr, tr
 
Methods inherited from class com.trolltech.qt.QSignalEmitter
disconnect, disconnect, signalSender
 
Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface com.trolltech.qt.QtJambiInterface
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership
 

Constructor Detail

QDoubleValidator

public QDoubleValidator(QObject parent)

Constructs a validator object with a parent object that accepts any double.


QDoubleValidator

public QDoubleValidator(double bottom,
                        double top,
                        int decimals,
                        QObject parent)

Constructs a validator object with a parent object. This validator will accept doubles from bottom to top inclusive, with up to decimals digits after the decimal point.

Method Detail

bottom

public final double bottom()

Returns the validator's minimum acceptable value.

See Also:
setBottom, setRange

decimals

public final int decimals()

Returns the validator's maximum number of digits after the decimal point.

See Also:
setDecimals, setRange

notation

public final QDoubleValidator.Notation notation()

Returns the notation of how a string can describe a number.

See Also:
setNotation, Notation

setBottom

public final void setBottom(double arg__1)

Sets the validator's minimum acceptable value to arg__1.

See Also:
bottom, setRange

setDecimals

public final void setDecimals(int arg__1)

Sets the validator's maximum number of digits after the decimal point to arg__1.

See Also:
decimals, setRange

setNotation

public final void setNotation(QDoubleValidator.Notation arg__1)

Sets the notation of how a string can describe a number to arg__1.

See Also:
notation, Notation

setTop

public final void setTop(double arg__1)

Sets the validator's maximum acceptable value to arg__1.

See Also:
top, setRange

top

public final double top()

Returns the validator's maximum acceptable value.

See Also:
setTop, setRange

setRange

public final void setRange(double bottom,
                           double top)

Equivalent to setRange(bottom, top, 0).


setRange

public void setRange(double bottom,
                     double top,
                     int decimals)

Sets the validator to accept doubles from bottom to top inclusive, with at most decimals digits after the decimal point.


validate

public QValidator.State validate(QValidator.QValidationData arg__1)

Equivalent to validate(arg__1, ).

Specified by:
validate in class QValidator

fromNativePointer

public static QDoubleValidator fromNativePointer(QNativePointer nativePointer)
This function returns the QDoubleValidator instance pointed to by nativePointer

Parameters:
nativePointer - the QNativePointer of which object should be returned.