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## com.trolltech.qt.gui
Class QProgressBar

    java.lang.Object
      com.trolltech.qt.internal.QSignalEmitterInternal
          com.trolltech.qt.QSignalEmitter
              com.trolltech.qt.QtJambiObject
                  com.trolltech.qt.core.QObject
                      com.trolltech.qt.gui.QWidget
                          com.trolltech.qt.gui.QProgressBar

All Implemented Interfaces:
  QPaintDeviceInterface, QtJambiInterface

    public class QProgressBar

extends QWidget

The QProgressBar widget provides a horizontal or vertical progress bar. A progress bar is used to give the user an indication of the progress of an operation and to reassure them that the application is still running.

The progress bar uses the concept of steps. You set it up by specifying the minimum and maximum possible step values, and it will display the percentage of steps that have been completed when you later give it the current step value. The percentage is calculated by dividing the progress (`value()` - `minimum()`) divided by `maximum()` - `minimum()`.

You can specify the minimum and maximum number of steps with `setMinimum()` and setMaximum. The current number of steps is set with `setValue()`. The progress bar can be rewound to the beginning with `reset()`.

If minimum and maximum both are set to 0, the bar shows a busy indicator instead of a percentage of steps. This is useful, for example, when using `QFtp` or `QHttp` to download items when they are unable to determine the size of the item being downloaded.

| A progress bar shown in the Macintosh widget style.
| A progress bar shown in the Windows XP widget style.
| A progress bar shown in the Plastique widget style.

See also:
  `QTimeLine`, `QProgressDialog`, and GUI Design Handbook: Progress Indicator.

Nested Class Summary
`static class` | `QProgressBar.Direction` Specifies the reading direction of the `text` for vertical progress bars.

Nested classes/interfaces inherited from class com.trolltech.qt.gui.QWidget
`QWidget.RenderFlag, QWidget.RenderFlags`

Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
`QSignalEmitter.AbstractSignal, QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9`

Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
`com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal`

Field Summary
`QSignalEmitter.Signal1` | `valueChanged` This signal takes 1 generic argument(s).

Fields inherited from class com.trolltech.qt.gui.QWidget
`customContextMenuRequested`

Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
`currentSender`

Constructor Summary
`QProgressBar()` Constructs a progress bar with the given `parent`.
`QProgressBar(QWidget parent)` Constructs a progress bar with the given `parent`.

Method Summary
`Qt.Alignment` | `alignment()` This property holds the alignment of the progress bar.
`java.lang.String` | `format()` This property holds the string used to generate the current text.
`protected void` | `initStyleOption(QStyleOptionProgressBar option)` Initialize `option` with the values from this QProgressBar.
`boolean` | `invertedAppearance()` This property holds whether or not a progress bar shows its progress inverted.
`boolean` | `isTextVisible()` This property holds whether the current completed percentage should be displayed.
`int` | `maximum()` This property holds the progress bar's maximum value.
`int` | `minimum()` This property holds the progress bar's minimum value.
`Qt.Orientation` | `orientation()` This property holds the orientation of the progress bar.
`void` | `reset()` Reset the progress bar.
`void` | `setAlignment(Qt.Alignment alignment)` This property holds the alignment of the progress bar.
`void` | `setAlignment(Qt.AlignmentFlag[] alignment)`
`void` | `setFormat(java.lang.String format)` This property holds the string used to generate the current text.
`void` | `setInvertedAppearance(boolean invert)` This property holds whether or not a progress bar shows its progress inverted.
`void` | `setMaximum(int maximum)` This property holds the progress bar's maximum value.
`void` | `setMinimum(int minimum)` This property holds the progress bar's minimum value.
`void` | `setOrientation(Qt.Orientation arg__1)` This property holds the orientation of the progress bar.
`void` | `setRange(int minimum, int maximum)` Sets the progress bar's minimum and maximum values to `minimum` and `maximum` respectively.
`void` | `setTextDirection(QProgressBar.Direction textDirection)` This property holds the reading direction of the `text` for vertical progress bars.
`void` | `setTextVisible(boolean visible)` This property holds whether the current completed percentage should be displayed.
`void` | `setValue(int value)` This property holds the progress bar's current value.
`java.lang.String` | `text()` This property holds the descriptive text shown with the progress bar.
`QProgressBar.Direction` | `textDirection()` This property holds the reading direction of the `text` for vertical progress bars.
`int` | `value()` This property holds the progress bar's current value.

Methods inherited from class com.trolltech.qt.gui.QWidget
`acceptDrops, accessibleDescription, accessibleName, actionEvent, actions, activateWindow, addAction, addActions, adjustSize, autoFillBackground, backgroundRole, baseSize, changeEvent, childAt, childAt, childrenRect, childrenRegion, clearFocus, clearMask, close, closeEvent, contentsRect, contextMenuEvent, contextMenuPolicy, cursor, depth, destroy, destroy, destroy, dragEnterEvent, dragLeaveEvent, dragMoveEvent, dropEvent, effectiveWinId, ensurePolished, enterEvent, focusInEvent, focusNextChild, focusNextPrevChild, focusOutEvent, focusPolicy, focusPreviousChild, focusProxy, focusWidget, font, fontInfo, fontMetrics, foregroundRole, frameGeometry, frameSize, geometry, getContentsMargins, grabKeyboard, grabMouse, grabMouse, grabShortcut, grabShortcut, hasFocus, hasMouseTracking, height, heightForWidth, heightMM, hide, hideEvent, inputContext, inputMethodEvent, inputMethodQuery, insertAction, insertActions, isActiveWindow, isAncestorOf, isEnabled, isEnabledTo, isFullScreen, isHidden, isMaximized, isMinimized, isModal, isVisible, isVisibleTo, isWindow, isWindowModified, keyboardGrabber, keyPressEvent, keyReleaseEvent, languageChange, layout, layoutDirection, leaveEvent, locale, logicalDpiX, logicalDpiY, lower, mapFrom, mapFromGlobal, mapFromParent, mapTo, mapToGlobal, mapToParent, mask, maximumHeight, maximumSize, maximumWidth, metric, minimumHeight, minimumSize, minimumSizeHint, minimumWidth, mouseDoubleClickEvent, mouseGrabber, mouseMoveEvent, mousePressEvent, mouseReleaseEvent, move, move, moveEvent, nativeParentWidget, nextInFocusChain, normalGeometry, numColors, overrideWindowFlags, overrideWindowFlags, overrideWindowState, paintEngine, paintEvent, paintingActive, palette, parentWidget, physicalDpiX, physicalDpiY, pos, raise, rect, releaseKeyboard, releaseMouse, releaseShortcut, removeAction, render, render, render, render, render, render, render, render, render, repaint, repaint, repaint, repaint, resetInputContext, resize, resize, resizeEvent, restoreGeometry, saveGeometry, scroll, scroll, setAcceptDrops, setAccessibleDescription, setAccessibleName, setAttribute, setAttribute, setAutoFillBackground, setBackgroundRole, setBaseSize, setBaseSize, setContentsMargins, setContentsMargins, setContextMenuPolicy, setCursor, setDisabled, setEnabled, setFixedHeight, setFixedSize, setFixedSize, setFixedWidth, setFocus, setFocus, setFocusPolicy, setFocusProxy, setFont, setForegroundRole, setGeometry, setGeometry, setHidden, setInputContext, setLayout, setLayoutDirection, setLocale, setMask, setMask, setMaximumHeight, setMaximumSize, setMaximumSize, setMaximumWidth, setMinimumHeight, setMinimumSize, setMinimumSize, setMinimumWidth, setMouseTracking, setPalette, setParent, setParent, setParent, setShortcutAutoRepeat, setShortcutAutoRepeat, setShortcutEnabled, setShortcutEnabled, setSizeIncrement, setSizeIncrement, setSizePolicy, setSizePolicy, setStatusTip, setStyle, setStyleSheet, setTabOrder, setToolTip, setUpdatesEnabled, setVisible, setWhatsThis, setWindowFilePath, setWindowFlags, setWindowFlags, setWindowIcon, setWindowIconText, setWindowModality, setWindowModified, setWindowOpacity, setWindowRole, setWindowState, setWindowState, setWindowTitle, show, showEvent, showFullScreen, showMaximized, showMinimized, showNormal, size, sizeHint, sizeIncrement, sizePolicy, stackUnder, statusTip, style, styleSheet, tabletEvent, testAttribute, toolTip, underMouse, unsetCursor, unsetLayoutDirection, unsetLocale, update, update, update, update, updateGeometry, updateMicroFocus, updatesEnabled, visibleRegion, whatsThis, wheelEvent, width, widthMM, window, windowFilePath, windowFlags, windowIcon, windowIconText, windowModality, windowOpacity, windowRole, windowState, windowTitle, windowType, winId, x, y`

Methods inherited from class com.trolltech.qt.core.QObject
`childEvent, children, connectSlotsByName, customEvent, disposeLater, dumpObjectInfo, dumpObjectTree, dynamicPropertyNames, event, eventFilter, findChild, findChild, findChild, findChildren, findChildren, findChildren, findChildren, indexOfProperty, installEventFilter, isWidgetType, killTimer, moveToThread, objectName, parent, properties, property, removeEventFilter, setObjectName, setParent, setProperty, startTimer, timerEvent, toString, userProperty`

Methods inherited from class com.trolltech.qt.QtJambiObject
`dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr`

Methods inherited from class com.trolltech.qt.QSignalEmitter
`blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread`

Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
`__qt_signalInitialization`

Methods inherited from class java.lang.Object
`clone, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Methods inherited from interface com.trolltech.qt.QtJambiInterface
`disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership`

Field Detail

### valueChanged

    public final QSignalEmitter.Signal1 valueChanged

  This signal takes 1 generic argument(s). We list their type and the name they go by in the description of this signal. <java.lang.Integer(named: value)>:

  This signal is emitted when the value shown in the progress bar changes. `value` is the new value shown by the progress bar.

Constructor Detail

### QProgressBar

    public QProgressBar()

  Constructs a progress bar with the given `parent`.

  By default, the minimum step value is set to 0, and the maximum to 100.

See also:
  `setRange()`.

### QProgressBar

    public QProgressBar(QWidget parent)

  Constructs a progress bar with the given `parent`.

  By default, the minimum step value is set to 0, and the maximum to 100.

See also:
  `setRange()`.

Method Detail

### alignment

    public final Qt.Alignment alignment()

  This property holds the alignment of the progress bar.

### format

    public final java.lang.String format()

  This property holds the string used to generate the current text. %p - is replaced by the percentage completed. %v - is replaced by the current value. %m - is replaced by the total number of steps.

  The default value is "%p%".

See also:
  `text()`.

### invertedAppearance

    public final boolean invertedAppearance()

  This property holds whether or not a progress bar shows its progress inverted. If this property is false, the progress bar grows in the other direction (e.g. from right to left). By default, the progress bar is not inverted.

See also:
  `orientation`, and `layoutDirection`.

### isTextVisible

    public final boolean isTextVisible()

  This property holds whether the current completed percentage should be displayed.

See also:
  `textDirection`.

### maximum

    public final int maximum()

  This property holds the progress bar's maximum value. When setting this property, the `minimum` is adjusted if necessary to ensure that the range remains valid. If the current value falls outside the new range, the progress bar is reset with `reset()`.

### minimum

    public final int minimum()

  This property holds the progress bar's minimum value. When setting this property, the `maximum` is adjusted if necessary to ensure that the range remains valid. If the current value falls outside the new range, the progress bar is reset with `reset()`.

### orientation

    public final Qt.Orientation orientation()

  This property holds the orientation of the progress bar. The orientation must be `Qt::Horizontal` (the default) or `Qt::Vertical` .

See also:
  `invertedAppearance`, and `textDirection`.

### reset

    public final void reset()

  Reset the progress bar. The progress bar "rewinds" and shows no progress.

### setAlignment

    public final void setAlignment(Qt.AlignmentFlag[] alignment)

### setAlignment

    public final void setAlignment(Qt.Alignment alignment)

  This property holds the alignment of the progress bar.

### setFormat

    public final void setFormat(java.lang.String format)

  This property holds the string used to generate the current text. %p - is replaced by the percentage completed. %v - is replaced by the current value. %m - is replaced by the total number of steps.

  The default value is "%p%".

See also:
  `text()`.

### setInvertedAppearance

    public final void setInvertedAppearance(boolean invert)

  This property holds whether or not a progress bar shows its progress inverted. If this property is false, the progress bar grows in the other direction (e.g. from right to left). By default, the progress bar is not inverted.

See also:
  `orientation`, and `layoutDirection`.

### setMaximum

    public final void setMaximum(int maximum)

  This property holds the progress bar's maximum value. When setting this property, the `minimum` is adjusted if necessary to ensure that the range remains valid. If the current value falls outside the new range, the progress bar is reset with `reset()`.

### setMinimum

    public final void setMinimum(int minimum)

  This property holds the progress bar's minimum value. When setting this property, the `maximum` is adjusted if necessary to ensure that the range remains valid. If the current value falls outside the new range, the progress bar is reset with `reset()`.

### setOrientation

    public final void setOrientation(Qt.Orientation arg__1)

  This property holds the orientation of the progress bar. The orientation must be `Qt::Horizontal` (the default) or `Qt::Vertical` .

See also:
  `invertedAppearance`, and `textDirection`.

### setRange

    public final void setRange(int minimum,
                               int maximum)

  Sets the progress bar's minimum and maximum values to `minimum` and `maximum` respectively.

  If `maximum` is smaller than `minimum`, `minimum` becomes the only legal value.

  If the current value falls outside the new range, the progress bar is reset with `reset()`.

See also:
  `minimum`, and `maximum`.

### setTextDirection

    public final void setTextDirection(QProgressBar.Direction textDirection)

  This property holds the reading direction of the `text` for vertical progress bars. This property has no impact on horizontal progress bars. By default, the reading direction is `QProgressBar::TopToBottom` .

See also:
  `orientation`, and `textVisible`.

### setTextVisible

    public final void setTextVisible(boolean visible)

  This property holds whether the current completed percentage should be displayed.

See also:
  `textDirection`.

### setValue

    public final void setValue(int value)

  This property holds the progress bar's current value. Attempting to change the current value to one outside the minimum-maximum range has no effect on the current value.

### textDirection

    public final QProgressBar.Direction textDirection()

  This property holds the reading direction of the `text` for vertical progress bars. This property has no impact on horizontal progress bars. By default, the reading direction is `QProgressBar::TopToBottom` .

See also:
  `orientation`, and `textVisible`.

### value

    public final int value()

  This property holds the progress bar's current value. Attempting to change the current value to one outside the minimum-maximum range has no effect on the current value.

### text

    public java.lang.String text()

  This property holds the descriptive text shown with the progress bar. The text returned is the same as the text displayed in the center (or in some styles, to the left) of the progress bar.

  The progress shown in the text may be smaller than the minimum value, indicating that the progress bar is in the "reset" state before any progress is set.

  In the default implementation, the text either contains a percentage value that indicates the progress so far, or it is blank because the progress bar is in the reset state.

### initStyleOption

    protected final void initStyleOption(QStyleOptionProgressBar option)

  Initialize `option` with the values from this QProgressBar. This method is useful for subclasses when they need a QStyleOptionProgressBar or QStyleOptionProgressBarV2, but don't want to fill in all the information themselves. This function will check the version of the QStyleOptionProgressBar and fill in the additional values for a QStyleOptionProgressBarV2.

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