Qt 4.8
Public Types | Public Slots | Signals | Public Functions | Protected Functions | Properties | List of all members
QProgressBar Class Reference

The QProgressBar widget provides a horizontal or vertical progress bar. More...

#include <qprogressbar.h>

Inheritance diagram for QProgressBar:
QWidget QObject QPaintDevice

Public Types

enum  Direction { TopToBottom, BottomToTop }
 Specifies the reading direction of the text for vertical progress bars. More...
 
- Public Types inherited from QWidget
enum  RenderFlag { DrawWindowBackground = 0x1, DrawChildren = 0x2, IgnoreMask = 0x4 }
 This enum describes how to render the widget when calling QWidget::render(). More...
 
- Public Types inherited from QPaintDevice
enum  PaintDeviceMetric {
  PdmWidth = 1, PdmHeight, PdmWidthMM, PdmHeightMM,
  PdmNumColors, PdmDepth, PdmDpiX, PdmDpiY,
  PdmPhysicalDpiX, PdmPhysicalDpiY
}
 

Public Slots

void reset ()
 Reset the progress bar. More...
 
void setMaximum (int maximum)
 
void setMinimum (int minimum)
 
void setOrientation (Qt::Orientation)
 
void setRange (int minimum, int maximum)
 Sets the progress bar's minimum and maximum values to minimum and maximum respectively. More...
 
void setValue (int value)
 
- Public Slots inherited from QWidget
bool close ()
 Closes this widget. More...
 
void hide ()
 Hides the widget. More...
 
void lower ()
 Lowers the widget to the bottom of the parent widget's stack. More...
 
void raise ()
 Raises this widget to the top of the parent widget's stack. More...
 
void repaint ()
 Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the widget is hidden. More...
 
void setDisabled (bool)
 Disables widget input events if disable is true; otherwise enables input events. More...
 
void setEnabled (bool)
 
void setFocus ()
 Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the active window. More...
 
void setHidden (bool hidden)
 Convenience function, equivalent to setVisible(!hidden). More...
 
QT_MOC_COMPAT void setShown (bool shown)
 Use setVisible(shown) instead. More...
 
void setStyleSheet (const QString &styleSheet)
 
virtual void setVisible (bool visible)
 
void setWindowModified (bool)
 
void setWindowTitle (const QString &)
 
void show ()
 Shows the widget and its child widgets. More...
 
void showFullScreen ()
 Shows the widget in full-screen mode. More...
 
void showMaximized ()
 Shows the widget maximized. More...
 
void showMinimized ()
 Shows the widget minimized, as an icon. More...
 
void showNormal ()
 Restores the widget after it has been maximized or minimized. More...
 
void update ()
 Updates the widget unless updates are disabled or the widget is hidden. More...
 
- Public Slots inherited from QObject
void deleteLater ()
 Schedules this object for deletion. More...
 

Signals

void valueChanged (int value)
 This signal is emitted when the value shown in the progress bar changes. More...
 
- Signals inherited from QWidget
void customContextMenuRequested (const QPoint &pos)
 This signal is emitted when the widget's contextMenuPolicy is Qt::CustomContextMenu, and the user has requested a context menu on the widget. More...
 
- Signals inherited from QObject
void destroyed (QObject *=0)
 This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
 

Public Functions

Qt::Alignment alignment () const
 
QString format () const
 
bool invertedAppearance ()
 
bool invertedAppearance () const
 
bool isTextVisible () const
 
int maximum () const
 
int minimum () const
 
QSize minimumSizeHint () const
 Reimplemented Function More...
 
Qt::Orientation orientation () const
 
 QProgressBar (QWidget *parent=0)
 Constructs a progress bar with the given parent. More...
 
void setAlignment (Qt::Alignment alignment)
 
void setFormat (const QString &format)
 
void setInvertedAppearance (bool invert)
 
void setTextDirection (QProgressBar::Direction textDirection)
 
void setTextVisible (bool visible)
 
QSize sizeHint () const
 Reimplemented Function More...
 
virtual QString text () const
 
QProgressBar::Direction textDirection ()
 
QProgressBar::Direction textDirection () const
 
int value () const
 
- Public Functions inherited from QWidget
bool acceptDrops () const
 
QString accessibleDescription () const
 
QString accessibleName () const
 
QList< QAction * > actions () const
 Returns the (possibly empty) list of this widget's actions. More...
 
void activateWindow ()
 Sets the top-level widget containing this widget to be the active window. More...
 
void addAction (QAction *action)
 Appends the action action to this widget's list of actions. More...
 
void addActions (QList< QAction *> actions)
 Appends the actions actions to this widget's list of actions. More...
 
void adjustSize ()
 Adjusts the size of the widget to fit its contents. More...
 
bool autoFillBackground () const
 
QPalette::ColorRole backgroundRole () const
 Returns the background role of the widget. More...
 
QSize baseSize () const
 
QWidgetchildAt (int x, int y) const
 Returns the visible child widget at the position ({x}, {y}) in the widget's coordinate system. More...
 
QWidgetchildAt (const QPoint &p) const
 Returns the visible child widget at point p in the widget's own coordinate system. More...
 
QRect childrenRect () const
 
QRegion childrenRegion () const
 
void clearFocus ()
 Takes keyboard input focus from the widget. More...
 
void clearMask ()
 Removes any mask set by setMask(). More...
 
QMargins contentsMargins () const
 The contentsMargins function returns the widget's contents margins. More...
 
QRect contentsRect () const
 Returns the area inside the widget's margins. More...
 
Qt::ContextMenuPolicy contextMenuPolicy () const
 
void createWinId ()
 
QCursor cursor () const
 
int devType () const
 
WId effectiveWinId () const
 Returns the effective window system identifier of the widget, i. More...
 
void ensurePolished () const
 Ensures that the widget has been polished by QStyle (i.e., has a proper font and palette). More...
 
Qt::FocusPolicy focusPolicy () const
 
QWidgetfocusProxy () const
 Returns the focus proxy, or 0 if there is no focus proxy. More...
 
QWidgetfocusWidget () const
 Returns the last child of this widget that setFocus had been called on. More...
 
const QFontfont () const
 
QFontInfo fontInfo () const
 Returns the font info for the widget's current font. More...
 
QFontMetrics fontMetrics () const
 Returns the font metrics for the widget's current font. More...
 
QPalette::ColorRole foregroundRole () const
 Returns the foreground role. More...
 
QRect frameGeometry () const
 
QSize frameSize () const
 
const QRectgeometry () const
 
void getContentsMargins (int *left, int *top, int *right, int *bottom) const
 Returns the widget's contents margins for left, top, right, and bottom. More...
 
HDC getDC () const
 Returns the window system handle of the widget, for low-level access. More...
 
void grabGesture (Qt::GestureType type, Qt::GestureFlags flags=Qt::GestureFlags())
 Subscribes the widget to a given gesture with specific flags. More...
 
void grabKeyboard ()
 Grabs the keyboard input. More...
 
void grabMouse ()
 Grabs the mouse input. More...
 
void grabMouse (const QCursor &)
 
int grabShortcut (const QKeySequence &key, Qt::ShortcutContext context=Qt::WindowShortcut)
 Adds a shortcut to Qt's shortcut system that watches for the given key sequence in the given context. More...
 
QGraphicsEffectgraphicsEffect () const
 The graphicsEffect function returns a pointer to the widget's graphics effect. More...
 
QGraphicsProxyWidgetgraphicsProxyWidget () const
 Returns the proxy widget for the corresponding embedded widget in a graphics view; otherwise returns 0. More...
 
bool hasFocus () const
 
bool hasMouseTracking () const
 
int height () const
 
virtual int heightForWidth (int) const
 Returns the preferred height for this widget, given the width w. More...
 
QInputContextinputContext ()
 This function returns the QInputContext for this widget. More...
 
Qt::InputMethodHints inputMethodHints () const
 
virtual QVariant inputMethodQuery (Qt::InputMethodQuery) const
 This method is only relevant for input widgets. More...
 
void insertAction (QAction *before, QAction *action)
 Inserts the action action to this widget's list of actions, before the action before. More...
 
void insertActions (QAction *before, QList< QAction *> actions)
 Inserts the actions actions to this widget's list of actions, before the action before. More...
 
WId internalWinId () const
 Returns the window system identifier of the widget, or 0 if the widget is not created yet. More...
 
bool isActiveWindow () const
 
bool isAncestorOf (const QWidget *child) const
 Returns true if this widget is a parent, (or grandparent and so on to any level), of the given child, and both widgets are within the same window; otherwise returns false. More...
 
bool isEnabled () const
 
bool isEnabledTo (QWidget *) const
 Returns true if this widget would become enabled if ancestor is enabled; otherwise returns false. More...
 
bool isEnabledToTLW () const
 This function is deprecated. More...
 
bool isFullScreen () const
 
bool isHidden () const
 Returns true if the widget is hidden, otherwise returns false. More...
 
bool isLeftToRight () const
 
bool isMaximized () const
 
bool isMinimized () const
 
bool isModal () const
 
bool isRightToLeft () const
 
bool isTopLevel () const
 Use isWindow() instead. More...
 
bool isVisible () const
 
bool isVisibleTo (QWidget *) const
 Returns true if this widget would become visible if ancestor is shown; otherwise returns false. More...
 
bool isWindow () const
 Returns true if the widget is an independent window, otherwise returns false. More...
 
bool isWindowModified () const
 
QLayoutlayout () const
 Returns the layout manager that is installed on this widget, or 0 if no layout manager is installed. More...
 
Qt::LayoutDirection layoutDirection () const
 
QLocale locale () const
 
Qt::HANDLE macCGHandle () const
 Returns the CoreGraphics handle of the widget. More...
 
Qt::HANDLE macQDHandle () const
 Returns the QuickDraw handle of the widget. More...
 
QPoint mapFrom (QWidget *, const QPoint &) const
 Translates the widget coordinate pos from the coordinate system of parent to this widget's coordinate system. More...
 
QPoint mapFromGlobal (const QPoint &) const
 Translates the global screen coordinate pos to widget coordinates. More...
 
QPoint mapFromParent (const QPoint &) const
 Translates the parent widget coordinate pos to widget coordinates. More...
 
QPoint mapTo (QWidget *, const QPoint &) const
 Translates the widget coordinate pos to the coordinate system of parent. More...
 
QPoint mapToGlobal (const QPoint &) const
 Translates the widget coordinate pos to global screen coordinates. More...
 
QPoint mapToParent (const QPoint &) const
 Translates the widget coordinate pos to a coordinate in the parent widget. More...
 
QRegion mask () const
 Returns the mask currently set on a widget. More...
 
int maximumHeight () const
 
QSize maximumSize () const
 
int maximumWidth () const
 
int minimumHeight () const
 
QSize minimumSize () const
 
int minimumWidth () const
 
void move (int x, int y)
 This corresponds to move(QPoint(x, y)). More...
 
void move (const QPoint &)
 
QWidgetnativeParentWidget () const
 Returns the native parent for this widget, i. More...
 
QWidgetnextInFocusChain () const
 Returns the next widget in this widget's focus chain. More...
 
QRect normalGeometry () const
 
void overrideWindowFlags (Qt::WindowFlags type)
 Sets the window flags for the widget to flags, without telling the window system. More...
 
void overrideWindowState (Qt::WindowStates state)
 
QPaintEnginepaintEngine () const
 Returns the widget's paint engine. More...
 
const QPalettepalette () const
 
QWidgetparentWidget () const
 Returns the parent of this widget, or 0 if it does not have any parent widget. More...
 
QPoint pos () const
 
QWidgetpreviousInFocusChain () const
 The previousInFocusChain function returns the previous widget in this widget's focus chain. More...
 
 QWidget (QWidget *parent=0, Qt::WindowFlags f=0)
 Constructs a widget which is a child of parent, with widget flags set to f. More...
 
QRect rect () const
 
void releaseDC (HDC) const
 Releases the HDC hdc acquired by a previous call to getDC(). More...
 
void releaseKeyboard ()
 Releases the keyboard grab. More...
 
void releaseMouse ()
 Releases the mouse grab. More...
 
void releaseShortcut (int id)
 Removes the shortcut with the given id from Qt's shortcut system. More...
 
void removeAction (QAction *action)
 Removes the action action from this widget's list of actions. More...
 
void render (QPaintDevice *target, const QPoint &targetOffset=QPoint(), const QRegion &sourceRegion=QRegion(), RenderFlags renderFlags=RenderFlags(DrawWindowBackground|DrawChildren))
 Renders the sourceRegion of this widget into the target using renderFlags to determine how to render. More...
 
void render (QPainter *painter, const QPoint &targetOffset=QPoint(), const QRegion &sourceRegion=QRegion(), RenderFlags renderFlags=RenderFlags(DrawWindowBackground|DrawChildren))
 Renders the widget into the painter's QPainter::device(). More...
 
void repaint (int x, int y, int w, int h)
 This version repaints a rectangle (x, y, w, h) inside the widget. More...
 
void repaint (const QRect &)
 This version repaints a rectangle rect inside the widget. More...
 
void repaint (const QRegion &)
 This version repaints a region rgn inside the widget. More...
 
void resize (int w, int h)
 This corresponds to resize(QSize(w, h)). More...
 
void resize (const QSize &)
 
bool restoreGeometry (const QByteArray &geometry)
 Restores the geometry and state top-level widgets stored in the byte array geometry. More...
 
QByteArray saveGeometry () const
 Saves the current geometry and state for top-level widgets. More...
 
void scroll (int dx, int dy)
 Scrolls the widget including its children dx pixels to the right and dy downward. More...
 
void scroll (int dx, int dy, const QRect &)
 This version only scrolls r and does not move the children of the widget. More...
 
void setAcceptDrops (bool on)
 
void setAccessibleDescription (const QString &description)
 
void setAccessibleName (const QString &name)
 
void setAttribute (Qt::WidgetAttribute, bool on=true)
 Sets the attribute attribute on this widget if on is true; otherwise clears the attribute. More...
 
void setAutoFillBackground (bool enabled)
 
void setBackgroundRole (QPalette::ColorRole)
 Sets the background role of the widget to role. More...
 
void setBaseSize (const QSize &)
 
void setBaseSize (int basew, int baseh)
 This corresponds to setBaseSize(QSize(basew, baseh)). More...
 
void setContentsMargins (int left, int top, int right, int bottom)
 Sets the margins around the contents of the widget to have the sizes left, top, right, and bottom. More...
 
void setContentsMargins (const QMargins &margins)
 The setContentsMargins function sets the margins around the widget's contents. More...
 
void setContextMenuPolicy (Qt::ContextMenuPolicy policy)
 
void setCursor (const QCursor &)
 
void setFixedHeight (int h)
 Sets both the minimum and maximum heights of the widget to h without changing the widths. More...
 
void setFixedSize (const QSize &)
 Sets both the minimum and maximum sizes of the widget to s, thereby preventing it from ever growing or shrinking. More...
 
void setFixedSize (int w, int h)
 Sets the width of the widget to w and the height to h. More...
 
void setFixedWidth (int w)
 Sets both the minimum and maximum width of the widget to w without changing the heights. More...
 
void setFocus (Qt::FocusReason reason)
 Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the active window. More...
 
void setFocusPolicy (Qt::FocusPolicy policy)
 
void setFocusProxy (QWidget *)
 Sets the widget's focus proxy to widget w. More...
 
void setFont (const QFont &)
 Use the single-argument overload instead. More...
 
void setForegroundRole (QPalette::ColorRole)
 Sets the foreground role of the widget to role. More...
 
void setGeometry (int x, int y, int w, int h)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This corresponds to setGeometry(QRect(x, y, w, h)). More...
 
void setGeometry (const QRect &)
 
void setGraphicsEffect (QGraphicsEffect *effect)
 The setGraphicsEffect function is for setting the widget's graphics effect. More...
 
void setInputContext (QInputContext *)
 This function sets the input context context on this widget. More...
 
void setInputMethodHints (Qt::InputMethodHints hints)
 
void setLayout (QLayout *)
 Sets the layout manager for this widget to layout. More...
 
void setLayoutDirection (Qt::LayoutDirection direction)
 
void setLocale (const QLocale &locale)
 
void setMask (const QBitmap &)
 Causes only the pixels of the widget for which bitmap has a corresponding 1 bit to be visible. More...
 
void setMask (const QRegion &)
 Causes only the parts of the widget which overlap region to be visible. More...
 
void setMaximumHeight (int maxh)
 
void setMaximumSize (const QSize &)
 
void setMaximumSize (int maxw, int maxh)
 This function corresponds to setMaximumSize(QSize(maxw, maxh)). More...
 
void setMaximumWidth (int maxw)
 
void setMinimumHeight (int minh)
 
void setMinimumSize (const QSize &)
 
void setMinimumSize (int minw, int minh)
 This function corresponds to setMinimumSize(QSize(minw, minh)). More...
 
void setMinimumWidth (int minw)
 
void setMouseTracking (bool enable)
 
void setPalette (const QPalette &)
 Use the single-argument overload instead. More...
 
void setParent (QWidget *parent)
 Sets the parent of the widget to parent, and resets the window flags. More...
 
void setParent (QWidget *parent, Qt::WindowFlags f)
 This function also takes widget flags, f as an argument. More...
 
void setShortcutAutoRepeat (int id, bool enable=true)
 If enable is true, auto repeat of the shortcut with the given id is enabled; otherwise it is disabled. More...
 
void setShortcutEnabled (int id, bool enable=true)
 If enable is true, the shortcut with the given id is enabled; otherwise the shortcut is disabled. More...
 
void setSizeIncrement (const QSize &)
 
void setSizeIncrement (int w, int h)
 Sets the x (width) size increment to w and the y (height) size increment to h. More...
 
void setSizePolicy (QSizePolicy)
 
void setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical)
 Sets the size policy of the widget to horizontal and vertical, with standard stretch and no height-for-width. More...
 
void setStatusTip (const QString &)
 
void setStyle (QStyle *)
 Sets the widget's GUI style to style. More...
 
void setToolTip (const QString &)
 
void setUpdatesEnabled (bool enable)
 
void setupUi (QWidget *widget)
 Sets up the user interface for the specified widget. More...
 
void setWhatsThis (const QString &)
 
void setWindowFilePath (const QString &filePath)
 
void setWindowFlags (Qt::WindowFlags type)
 
void setWindowIcon (const QIcon &icon)
 
void setWindowIconText (const QString &)
 
void setWindowModality (Qt::WindowModality windowModality)
 
void setWindowOpacity (qreal level)
 
void setWindowRole (const QString &)
 Sets the window's role to role. More...
 
void setWindowState (Qt::WindowStates state)
 Sets the window state to windowState. More...
 
void setWindowSurface (QWindowSurface *surface)
 Sets the window surface to be the surface specified. More...
 
QSize size () const
 
QSize sizeIncrement () const
 
QSizePolicy sizePolicy () const
 
void stackUnder (QWidget *)
 Places the widget under w in the parent widget's stack. More...
 
QString statusTip () const
 
QStylestyle () const
 
QString styleSheet () const
 
bool testAttribute (Qt::WidgetAttribute) const
 Returns true if attribute attribute is set on this widget; otherwise returns false. More...
 
QString toolTip () const
 
QWidgettopLevelWidget () const
 
bool underMouse () const
 Returns true if the widget is under the mouse cursor; otherwise returns false. More...
 
void ungrabGesture (Qt::GestureType type)
 Unsubscribes the widget from a given gesture type. More...
 
void unsetCursor ()
 
void unsetLayoutDirection ()
 
void unsetLocale ()
 
void update (int x, int y, int w, int h)
 This version updates a rectangle (x, y, w, h) inside the widget. More...
 
void update (const QRect &)
 This version updates a rectangle rect inside the widget. More...
 
void update (const QRegion &)
 This version repaints a region rgn inside the widget. More...
 
void updateGeometry ()
 Notifies the layout system that this widget has changed and may need to change geometry. More...
 
bool updatesEnabled () const
 
QRegion visibleRegion () const
 Returns the unobscured region where paint events can occur. More...
 
QString whatsThis () const
 
int width () const
 
QWidgetwindow () const
 Returns the window for this widget, i.e. More...
 
QString windowFilePath () const
 
Qt::WindowFlags windowFlags () const
 Window flags are a combination of a type (e. More...
 
QIcon windowIcon () const
 
QString windowIconText () const
 
Qt::WindowModality windowModality () const
 
qreal windowOpacity () const
 
QString windowRole () const
 Returns the window's role, or an empty string. More...
 
Qt::WindowStates windowState () const
 Returns the current window state. More...
 
QWindowSurfacewindowSurface () const
 Returns the QWindowSurface this widget will be drawn into. More...
 
QString windowTitle () const
 
Qt::WindowType windowType () const
 Returns the window type of this widget. More...
 
WId winId () const
 Returns the window system identifier of the widget. More...
 
int x () const
 
const QX11Infox11Info () const
 Returns information about the configuration of the X display used to display the widget. More...
 
Qt::HANDLE x11PictureHandle () const
 Returns the X11 Picture handle of the widget for XRender support. More...
 
int y () const
 
 ~QWidget ()
 Destroys the widget. More...
 
- Public Functions inherited from QObject
bool blockSignals (bool b)
 If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
 
const QObjectListchildren () const
 Returns a list of child objects. More...
 
bool connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
 
bool disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
 
bool disconnect (const QObject *receiver, const char *member=0)
 
void dumpObjectInfo ()
 Dumps information about signal connections, etc. More...
 
void dumpObjectTree ()
 Dumps a tree of children to the debug output. More...
 
QList< QByteArraydynamicPropertyNames () const
 Returns the names of all properties that were dynamically added to the object using setProperty(). More...
 
virtual bool eventFilter (QObject *, QEvent *)
 Filters events if this object has been installed as an event filter for the watched object. More...
 
template<typename T >
findChild (const QString &aName=QString()) const
 Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
 
template<typename T >
QList< T > findChildren (const QString &aName=QString()) const
 Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...
 
template<typename T >
QList< T > findChildren (const QRegExp &re) const
 
bool inherits (const char *classname) const
 Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...
 
void installEventFilter (QObject *)
 Installs an event filter filterObj on this object. More...
 
bool isWidgetType () const
 Returns true if the object is a widget; otherwise returns false. More...
 
void killTimer (int id)
 Kills the timer with timer identifier, id. More...
 
virtual const QMetaObjectmetaObject () const
 Returns a pointer to the meta-object of this object. More...
 
void moveToThread (QThread *thread)
 Changes the thread affinity for this object and its children. More...
 
QString objectName () const
 
QObjectparent () const
 Returns a pointer to the parent object. More...
 
QVariant property (const char *name) const
 Returns the value of the object's name property. More...
 
Q_INVOKABLE QObject (QObject *parent=0)
 Constructs an object with parent object parent. More...
 
void removeEventFilter (QObject *)
 Removes an event filter object obj from this object. More...
 
void setObjectName (const QString &name)
 
void setParent (QObject *)
 Makes the object a child of parent. More...
 
bool setProperty (const char *name, const QVariant &value)
 Sets the value of the object's name property to value. More...
 
void setUserData (uint id, QObjectUserData *data)
 
bool signalsBlocked () const
 Returns true if signals are blocked; otherwise returns false. More...
 
int startTimer (int interval)
 Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
 
QThreadthread () const
 Returns the thread in which the object lives. More...
 
QObjectUserDatauserData (uint id) const
 
virtual ~QObject ()
 Destroys the object, deleting all its child objects. More...
 
- Public Functions inherited from QPaintDevice
int colorCount () const
 
int depth () const
 
int height () const
 
int heightMM () const
 
int logicalDpiX () const
 
int logicalDpiY () const
 
QT_DEPRECATED int numColors () const
 
bool paintingActive () const
 
int physicalDpiX () const
 
int physicalDpiY () const
 
int width () const
 
int widthMM () const
 
virtual ~QPaintDevice ()
 

Protected Functions

bool event (QEvent *e)
 Reimplemented Function More...
 
void initStyleOption (QStyleOptionProgressBar *option) const
 Initialize option with the values from this QProgressBar. More...
 
void paintEvent (QPaintEvent *)
 Reimplemented Function More...
 
- Protected Functions inherited from QWidget
virtual void actionEvent (QActionEvent *)
 This event handler is called with the given event whenever the widget's actions are changed. More...
 
virtual void changeEvent (QEvent *)
 This event handler can be reimplemented to handle state changes. More...
 
virtual void closeEvent (QCloseEvent *)
 This event handler is called with the given event when Qt receives a window close request for a top-level widget from the window system. More...
 
virtual void contextMenuEvent (QContextMenuEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive widget context menu events. More...
 
void create (WId=0, bool initializeWindow=true, bool destroyOldWindow=true)
 Creates a new widget window if window is 0, otherwise sets the widget's window to window. More...
 
void destroy (bool destroyWindow=true, bool destroySubWindows=true)
 Frees up window system resources. More...
 
virtual void dragEnterEvent (QDragEnterEvent *)
 This event handler is called when a drag is in progress and the mouse enters this widget. More...
 
virtual void dragLeaveEvent (QDragLeaveEvent *)
 This event handler is called when a drag is in progress and the mouse leaves this widget. More...
 
virtual void dragMoveEvent (QDragMoveEvent *)
 This event handler is called if a drag is in progress, and when any of the following conditions occur: the cursor enters this widget, the cursor moves within this widget, or a modifier key is pressed on the keyboard while this widget has the focus. More...
 
virtual void dropEvent (QDropEvent *)
 This event handler is called when the drag is dropped on this widget. More...
 
virtual void enabledChange (bool)
 
virtual void enterEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive widget enter events which are passed in the event parameter. More...
 
virtual void focusInEvent (QFocusEvent *)
 This event handler can be reimplemented in a subclass to receive keyboard focus events (focus received) for the widget. More...
 
bool focusNextChild ()
 Finds a new widget to give the keyboard focus to, as appropriate for Tab, and returns true if it can find a new widget, or false if it can't. More...
 
virtual bool focusNextPrevChild (bool next)
 Finds a new widget to give the keyboard focus to, as appropriate for Tab and Shift+Tab, and returns true if it can find a new widget, or false if it can't. More...
 
virtual void focusOutEvent (QFocusEvent *)
 This event handler can be reimplemented in a subclass to receive keyboard focus events (focus lost) for the widget. More...
 
bool focusPreviousChild ()
 Finds a new widget to give the keyboard focus to, as appropriate for Shift+Tab, and returns true if it can find a new widget, or false if it can't. More...
 
virtual void fontChange (const QFont &)
 
virtual void hideEvent (QHideEvent *)
 This event handler can be reimplemented in a subclass to receive widget hide events. More...
 
virtual void inputMethodEvent (QInputMethodEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive Input Method composition events. More...
 
virtual void keyPressEvent (QKeyEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive key press events for the widget. More...
 
virtual void keyReleaseEvent (QKeyEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive key release events for the widget. More...
 
virtual void languageChange ()
 
virtual void leaveEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive widget leave events which are passed in the event parameter. More...
 
virtual bool macEvent (EventHandlerCallRef, EventRef)
 This special event handler can be reimplemented in a subclass to receive native Macintosh events. More...
 
int metric (PaintDeviceMetric) const
 Internal implementation of the virtual QPaintDevice::metric() function. More...
 
virtual void mouseDoubleClickEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse double click events for the widget. More...
 
virtual void mouseMoveEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse move events for the widget. More...
 
virtual void mousePressEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse press events for the widget. More...
 
virtual void mouseReleaseEvent (QMouseEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive mouse release events for the widget. More...
 
virtual void moveEvent (QMoveEvent *)
 This event handler can be reimplemented in a subclass to receive widget move events which are passed in the event parameter. More...
 
virtual void paletteChange (const QPalette &)
 
 QWidget (QWidgetPrivate &d, QWidget *parent, Qt::WindowFlags f)
 
virtual bool qwsEvent (QWSEvent *)
 This special event handler can be reimplemented in a subclass to receive native Qt for Embedded Linux events which are passed in the event parameter. More...
 
void resetInputContext ()
 This function can be called on the widget that currently has focus to reset the input method operating on it. More...
 
virtual void resizeEvent (QResizeEvent *)
 This event handler can be reimplemented in a subclass to receive widget resize events which are passed in the event parameter. More...
 
virtual void showEvent (QShowEvent *)
 This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter. More...
 
virtual void styleChange (QStyle &)
 
virtual void tabletEvent (QTabletEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive tablet events for the widget. More...
 
virtual void wheelEvent (QWheelEvent *)
 This event handler, for event event, can be reimplemented in a subclass to receive wheel events for the widget. More...
 
virtual void windowActivationChange (bool)
 
virtual bool winEvent (MSG *message, long *result)
 This special event handler can be reimplemented in a subclass to receive native Windows events which are passed in the message parameter. More...
 
virtual bool x11Event (XEvent *)
 This special event handler can be reimplemented in a subclass to receive native X11 events passed in the event parameter. More...
 
- Protected Functions inherited from QObject
virtual void childEvent (QChildEvent *)
 This event handler can be reimplemented in a subclass to receive child events. More...
 
virtual void connectNotify (const char *signal)
 This virtual function is called when something has been connected to signal in this object. More...
 
virtual void customEvent (QEvent *)
 This event handler can be reimplemented in a subclass to receive custom events. More...
 
virtual void disconnectNotify (const char *signal)
 This virtual function is called when something has been disconnected from signal in this object. More...
 
 QObject (QObjectPrivate &dd, QObject *parent=0)
 
int receivers (const char *signal) const
 Returns the number of receivers connected to the signal. More...
 
QObjectsender () const
 Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
 
int senderSignalIndex () const
 
virtual void timerEvent (QTimerEvent *)
 This event handler can be reimplemented in a subclass to receive timer events for the object. More...
 
- Protected Functions inherited from QPaintDevice
 QPaintDevice ()
 

Properties

Qt::Alignment alignment
 the alignment of the progress bar More...
 
QString format
 the string used to generate the current text More...
 
bool invertedAppearance
 whether or not a progress bar shows its progress inverted More...
 
int maximum
 the progress bar's maximum value More...
 
int minimum
 the progress bar's minimum value More...
 
Qt::Orientation orientation
 the orientation of the progress bar More...
 
QString text
 the descriptive text shown with the progress bar More...
 
Direction textDirection
 the reading direction of the text for vertical progress bars More...
 
bool textVisible
 whether the current completed percentage should be displayed More...
 
int value
 the progress bar's current value More...
 

Additional Inherited Members

- Static Public Functions inherited from QWidget
static QWidgetfind (WId)
 Returns a pointer to the widget with window identifer/handle id. More...
 
static QWidgetkeyboardGrabber ()
 Returns the widget that is currently grabbing the keyboard input. More...
 
static QWidgetmouseGrabber ()
 Returns the widget that is currently grabbing the mouse input. More...
 
static void setTabOrder (QWidget *, QWidget *)
 Puts the second widget after the first widget in the focus order. More...
 
- Static Public Functions inherited from QObject
static bool connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
 Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
 
static bool connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
 
static bool disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
 Disconnects signal in object sender from method in object receiver. More...
 
static bool disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
 
static uint registerUserData ()
 
static QString tr (const char *sourceText, const char *comment=0, int n=-1)
 
static QString trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
 
- Static Public Functions inherited from QPaintDevice
static QWSDisplayqwsDisplay ()
 
- Static Public Variables inherited from QObject
static const QMetaObject staticMetaObject
 This variable stores the meta-object for the class. More...
 
- Protected Slots inherited from QWidget
void updateMicroFocus ()
 Updates the widget's micro focus. More...
 
- Protected Variables inherited from QObject
QScopedPointer< QObjectDatad_ptr
 
- Protected Variables inherited from QPaintDevice
ushort painters
 
- Static Protected Variables inherited from QObject
static const QMetaObject staticQtMetaObject
 

Detailed Description

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 QNetworkAccessManager to download items when they are unable to determine the size of the item being downloaded.

macintosh-progressbar.png
Screenshot of a Macintosh style progress bar
A progress bar shown in the Macintosh widget style.
windowsxp-progressbar.png
Screenshot of a Windows XP style progress bar
A progress bar shown in the Windows XP widget style.
plastique-progressbar.png
Screenshot of a Plastique style progress bar
A progress bar shown in the Plastique widget style.
See also
QProgressDialog, {fowler}{GUI Design Handbook: Progress Indicator}

Definition at line 58 of file qprogressbar.h.

Enumerations

◆ Direction

Specifies the reading direction of the text for vertical progress bars.

Since
4.1
  • TopToBottom The text is rotated 90 degrees clockwise.
  • BottomToTop The text is rotated 90 degrees counter-clockwise.

Note that whether or not the text is drawn is dependent on the style. Currently CDE, CleanLooks, Motif, and Plastique draw the text. Mac, Windows and WindowsXP style do not.

See also
textDirection
Enumerator
TopToBottom 
BottomToTop 

Definition at line 74 of file qprogressbar.h.

Constructors and Destructors

◆ QProgressBar()

QProgressBar::QProgressBar ( QWidget parent = 0)
explicit

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()

Definition at line 250 of file qprogressbar.cpp.

251  : QWidget(*(new QProgressBarPrivate), parent, 0)
252 {
253  d_func()->init();
254 }
QWidget(QWidget *parent=0, Qt::WindowFlags f=0)
Constructs a widget which is a child of parent, with widget flags set to f.
Definition: qwidget.cpp:1189

Functions

◆ alignment()

Qt::Alignment QProgressBar::alignment ( ) const

Referenced by setAlignment().

◆ event()

bool QProgressBar::event ( QEvent e)
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 595 of file qprogressbar.cpp.

596 {
597  Q_D(QProgressBar);
598  if (e->type() == QEvent::StyleChange
599 #ifdef Q_WS_MAC
600  || e->type() == QEvent::MacSizeChange
601 #endif
602  )
603  d->resetLayoutItemMargins();
604  return QWidget::event(e);
605 }
double d
Definition: qnumeric_p.h:62
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
bool event(QEvent *)
This is the main event handler; it handles event event.
Definition: qwidget.cpp:8636
Type type() const
Returns the event type.
Definition: qcoreevent.h:303

◆ format()

QString QProgressBar::format ( ) const

Referenced by setFormat().

◆ initStyleOption()

void QProgressBar::initStyleOption ( QStyleOptionProgressBar option) const
protected

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.

See also
QStyleOption::initFrom()

Definition at line 115 of file qprogressbar.cpp.

Referenced by paintEvent(), and sizeHint().

116 {
117  if (!option)
118  return;
119  Q_D(const QProgressBar);
120  option->initFrom(this);
121 
122  if (d->orientation == Qt::Horizontal)
123  option->state |= QStyle::State_Horizontal;
124  option->minimum = d->minimum;
125  option->maximum = d->maximum;
126  option->progress = d->value;
127  option->textAlignment = d->alignment;
128  option->textVisible = d->textVisible;
129  option->text = text();
130 
131  if (QStyleOptionProgressBarV2 *optionV2
132  = qstyleoption_cast<QStyleOptionProgressBarV2 *>(option)) {
133  optionV2->orientation = d->orientation; // ### Qt 5: use State_Horizontal instead
134  optionV2->invertedAppearance = d->invertedAppearance;
135  optionV2->bottomToTop = (d->textDirection == QProgressBar::BottomToTop);
136  }
137 }
double d
Definition: qnumeric_p.h:62
QString text
the text for the progress bar
Definition: qstyleoption.h:405
int maximum
the maximum value for the progress bar
Definition: qstyleoption.h:403
QStyle::State state
the style flags that are used when drawing the control
Definition: qstyleoption.h:88
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
The QStyleOptionProgressBarV2 class is used to describe the parameters necessary for drawing a progre...
Definition: qstyleoption.h:417
void initFrom(const QWidget *w)
Definition: qstyleoption.h:99
int progress
the current progress for the progress bar
Definition: qstyleoption.h:404
Qt::Alignment textAlignment
the text alignment for the text in the QProgressBar
Definition: qstyleoption.h:406
int minimum
the minimum value for the progress bar
Definition: qstyleoption.h:402
bool textVisible
a flag indicating whether or not text is visible
Definition: qstyleoption.h:407
virtual QString text() const

◆ invertedAppearance() [1/2]

bool QProgressBar::invertedAppearance ( )

Referenced by setInvertedAppearance().

◆ invertedAppearance() [2/2]

bool QProgressBar::invertedAppearance ( ) const
inline

Definition at line 97 of file qprogressbar.h.

Referenced by invertedAppearance().

97 { return const_cast<QProgressBar *>(this)->invertedAppearance(); }
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
bool invertedAppearance()

◆ isTextVisible()

bool QProgressBar::isTextVisible ( ) const

Definition at line 394 of file qprogressbar.cpp.

395 {
396  return d_func()->textVisible;
397 }

◆ maximum()

int QProgressBar::maximum ( ) const

Referenced by setMaximum(), and setMinimum().

◆ minimum()

int QProgressBar::minimum ( ) const

◆ minimumSizeHint()

QSize QProgressBar::minimumSizeHint ( ) const
virtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 450 of file qprogressbar.cpp.

451 {
452  QSize size;
453  if (orientation() == Qt::Horizontal)
454  size = QSize(sizeHint().width(), fontMetrics().height() + 2);
455  else
456  size = QSize(fontMetrics().height() + 2, sizeHint().height());
457  return size;
458 }
Qt::Orientation orientation() const
QSize size() const
QSize sizeHint() const
Reimplemented Function
int height() const
int width() const
QFontMetrics fontMetrics() const
Returns the font metrics for the widget&#39;s current font.
Definition: qwidget.h:984
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53

◆ orientation()

Qt::Orientation QProgressBar::orientation ( ) const

Referenced by minimumSizeHint(), and setOrientation().

◆ paintEvent()

void QProgressBar::paintEvent ( QPaintEvent )
protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 422 of file qprogressbar.cpp.

423 {
424  QStylePainter paint(this);
426  initStyleOption(&opt);
427  paint.drawControl(QStyle::CE_ProgressBar, opt);
428  d_func()->lastPaintedValue = d_func()->value;
429 }
void initStyleOption(QStyleOptionProgressBar *option) const
Initialize option with the values from this QProgressBar.
The QStyleOptionProgressBarV2 class is used to describe the parameters necessary for drawing a progre...
Definition: qstyleoption.h:417
The QStylePainter class is a convenience class for drawing QStyle elements inside a widget...
Definition: qstylepainter.h:55

◆ reset

void QProgressBar::reset ( )
slot

Reset the progress bar.

The progress bar "rewinds" and shows no progress.

Definition at line 261 of file qprogressbar.cpp.

Referenced by setRange().

262 {
263  Q_D(QProgressBar);
264  d->value = d->minimum - 1;
265  if (d->minimum == INT_MIN)
266  d->value = INT_MIN;
267  repaint();
268 }
double d
Definition: qnumeric_p.h:62
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761

◆ setAlignment()

void QProgressBar::setAlignment ( Qt::Alignment  alignment)

Definition at line 406 of file qprogressbar.cpp.

407 {
408  if (d_func()->alignment != alignment) {
409  d_func()->alignment = alignment;
410  repaint();
411  }
412 }
Qt::Alignment alignment() const
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761

◆ setFormat()

void QProgressBar::setFormat ( const QString format)

Definition at line 623 of file qprogressbar.cpp.

624 {
625  Q_D(QProgressBar);
626  if (d->format == format)
627  return;
628  d->format = format;
629  update();
630 }
double d
Definition: qnumeric_p.h:62
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883
QString format() const

◆ setInvertedAppearance()

void QProgressBar::setInvertedAppearance ( bool  invert)

Definition at line 555 of file qprogressbar.cpp.

556 {
557  Q_D(QProgressBar);
558  d->invertedAppearance = invert;
559  update();
560 }
double d
Definition: qnumeric_p.h:62
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883

◆ setMaximum

void QProgressBar::setMaximum ( int  maximum)
slot

Definition at line 306 of file qprogressbar.cpp.

307 {
308  setRange(qMin(d_func()->minimum, maximum), maximum);
309 }
Q_DECL_CONSTEXPR const T & qMin(const T &a, const T &b)
Definition: qglobal.h:1215
void setRange(int minimum, int maximum)
Sets the progress bar&#39;s minimum and maximum values to minimum and maximum respectively.
int maximum() const
int minimum() const

◆ setMinimum

void QProgressBar::setMinimum ( int  minimum)
slot

Definition at line 282 of file qprogressbar.cpp.

283 {
284  setRange(minimum, qMax(d_func()->maximum, minimum));
285 }
Q_DECL_CONSTEXPR const T & qMax(const T &a, const T &b)
Definition: qglobal.h:1217
void setRange(int minimum, int maximum)
Sets the progress bar&#39;s minimum and maximum values to minimum and maximum respectively.
int maximum() const
int minimum() const

◆ setOrientation

void QProgressBar::setOrientation ( Qt::Orientation  orientation)
slot

Definition at line 517 of file qprogressbar.cpp.

518 {
519  Q_D(QProgressBar);
520  if (d->orientation == orientation)
521  return;
522  d->orientation = orientation;
524  QSizePolicy sp = sizePolicy();
525  sp.transpose();
526  setSizePolicy(sp);
528  }
529  d->resetLayoutItemMargins();
530  update();
531  updateGeometry();
532 }
double d
Definition: qnumeric_p.h:62
Qt::Orientation orientation() const
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883
QSizePolicy sizePolicy() const
bool testAttribute(Qt::WidgetAttribute) const
Returns true if attribute attribute is set on this widget; otherwise returns false.
Definition: qwidget.h:1041
void transpose()
Definition: qsizepolicy.h:229
void setAttribute(Qt::WidgetAttribute, bool on=true)
Sets the attribute attribute on this widget if on is true; otherwise clears the attribute.
Definition: qwidget.cpp:11087
void updateGeometry()
Notifies the layout system that this widget has changed and may need to change geometry.
Definition: qwidget.cpp:10372
void setSizePolicy(QSizePolicy)
Definition: qwidget.cpp:10198

◆ setRange

void QProgressBar::setRange ( int  minimum,
int  maximum 
)
slot

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 maximum

Definition at line 360 of file qprogressbar.cpp.

Referenced by QProgressDialogPrivate::init(), setMaximum(), and setMinimum().

361 {
362  Q_D(QProgressBar);
363  if (minimum != d->minimum || maximum != d->maximum) {
364  d->minimum = minimum;
365  d->maximum = qMax(minimum, maximum);
366 
367  if (d->value < (d->minimum - 1) || d->value > d->maximum)
368  reset();
369  else
370  update();
371  }
372 }
double d
Definition: qnumeric_p.h:62
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
Q_DECL_CONSTEXPR const T & qMax(const T &a, const T &b)
Definition: qglobal.h:1217
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883
int maximum() const
void reset()
Reset the progress bar.
int minimum() const

◆ setTextDirection()

void QProgressBar::setTextDirection ( QProgressBar::Direction  textDirection)

Definition at line 581 of file qprogressbar.cpp.

582 {
583  Q_D(QProgressBar);
584  d->textDirection = textDirection;
585  update();
586 }
double d
Definition: qnumeric_p.h:62
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
void update()
Updates the widget unless updates are disabled or the widget is hidden.
Definition: qwidget.cpp:10883
QProgressBar::Direction textDirection()

◆ setTextVisible()

void QProgressBar::setTextVisible ( bool  visible)

Definition at line 385 of file qprogressbar.cpp.

386 {
387  Q_D(QProgressBar);
388  if (d->textVisible != visible) {
389  d->textVisible = visible;
390  repaint();
391  }
392 }
double d
Definition: qnumeric_p.h:62
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
bool visible
whether the widget is visible
Definition: qwidget.h:191
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761

◆ setValue

void QProgressBar::setValue ( int  value)
slot

Definition at line 326 of file qprogressbar.cpp.

327 {
328  Q_D(QProgressBar);
329  if (d->value == value
330  || ((value > d->maximum || value < d->minimum)
331  && (d->maximum != 0 || d->minimum != 0)))
332  return;
333  d->value = value;
335 #ifndef QT_NO_ACCESSIBILITY
336  if (isVisible())
338 #endif
339  if (d->repaintRequired())
340  repaint();
341 }
double d
Definition: qnumeric_p.h:62
static void updateAccessibility(QObject *, int who, Event reason)
Notifies accessibility clients about a change in object&#39;s accessibility information.
bool isVisible() const
Definition: qwidget.h:1005
int value() const
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
#define Q_D(Class)
Definition: qglobal.h:2482
#define emit
Definition: qobjectdefs.h:76
void repaint()
Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the ...
Definition: qwidget.cpp:10761
int minimum() const
void valueChanged(int value)
This signal is emitted when the value shown in the progress bar changes.

◆ sizeHint()

QSize QProgressBar::sizeHint ( ) const
virtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 434 of file qprogressbar.cpp.

Referenced by QProgressDialogPrivate::layout(), and minimumSizeHint().

435 {
436  ensurePolished();
437  QFontMetrics fm = fontMetrics();
439  initStyleOption(&opt);
440  int cw = style()->pixelMetric(QStyle::PM_ProgressBarChunkWidth, &opt, this);
441  QSize size = QSize(qMax(9, cw) * 7 + fm.width(QLatin1Char('0')) * 4, fm.height() + 8);
442  if (opt.orientation == Qt::Vertical)
443  size.transpose();
444  return style()->sizeFromContents(QStyle::CT_ProgressBar, &opt, size, this);
445 }
int width(const QString &, int len=-1) const
Returns the width in pixels of the first len characters of text.
The QFontMetrics class provides font metrics information.
Definition: qfontmetrics.h:65
QSize size() const
void ensurePolished() const
Ensures that the widget has been polished by QStyle (i.e., has a proper font and palette).
Definition: qwidget.cpp:10024
virtual int pixelMetric(PixelMetric metric, const QStyleOption *option=0, const QWidget *widget=0) const =0
Returns the value of the given pixel metric.
Qt::Orientation orientation
the progress bar&#39;s orientation (horizontal or vertical); the default orentation is Qt::Horizontal ...
Definition: qstyleoption.h:422
Q_DECL_CONSTEXPR const T & qMax(const T &a, const T &b)
Definition: qglobal.h:1217
QStyle * style() const
Definition: qwidget.cpp:2742
void initStyleOption(QStyleOptionProgressBar *option) const
Initialize option with the values from this QProgressBar.
The QStyleOptionProgressBarV2 class is used to describe the parameters necessary for drawing a progre...
Definition: qstyleoption.h:417
QFontMetrics fontMetrics() const
Returns the font metrics for the widget&#39;s current font.
Definition: qwidget.h:984
void transpose()
Swaps the width and height values.
Definition: qsize.cpp:196
virtual QSize sizeFromContents(ContentsType ct, const QStyleOption *opt, const QSize &contentsSize, const QWidget *w=0) const =0
Returns the size of the element described by the specified option and type, based on the provided con...
The QSize class defines the size of a two-dimensional object using integer point precision.
Definition: qsize.h:53
int height() const
Returns the height of the font.
The QLatin1Char class provides an 8-bit ASCII/Latin-1 character.
Definition: qchar.h:55

◆ text()

virtual QString QProgressBar::text ( ) const
virtual

Referenced by minimumSizeHint().

◆ textDirection() [1/2]

QProgressBar::Direction QProgressBar::textDirection ( )

Referenced by setTextDirection().

◆ textDirection() [2/2]

QProgressBar::Direction QProgressBar::textDirection ( ) const
inline

Definition at line 100 of file qprogressbar.h.

Referenced by textDirection().

100 { return const_cast<QProgressBar *>(this)->textDirection(); }
The QProgressBar widget provides a horizontal or vertical progress bar.
Definition: qprogressbar.h:58
QProgressBar::Direction textDirection()

◆ value()

int QProgressBar::value ( ) const

Referenced by setValue().

◆ valueChanged

void QProgressBar::valueChanged ( int  value)
signal

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

value is the new value shown by the progress bar.

Referenced by setValue().

Properties

◆ alignment

Qt::Alignment QProgressBar::alignment
private

the alignment of the progress bar

Definition at line 66 of file qprogressbar.h.

◆ format

QString QProgressBar::format
private

the string used to generate the current text

Since
4.2

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()

Definition at line 71 of file qprogressbar.h.

◆ invertedAppearance

bool QProgressBar::invertedAppearance
private

whether or not a progress bar shows its progress inverted

Since
4.1

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, layoutDirection

Definition at line 69 of file qprogressbar.h.

◆ maximum

int QProgressBar::maximum
private

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().

Definition at line 63 of file qprogressbar.h.

Referenced by QAccessibleProgressBar::maximumValue(), QPlastiqueStyle::timerEvent(), and QMotifStyle::timerEvent().

◆ minimum

int QProgressBar::minimum
private

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().

Definition at line 62 of file qprogressbar.h.

Referenced by QAccessibleProgressBar::minimumValue(), QPlastiqueStyle::timerEvent(), and QMotifStyle::timerEvent().

◆ orientation

Qt::Orientation QProgressBar::orientation
private

the orientation of the progress bar

Since
4.1

The orientation must be Qt::Horizontal (the default) or Qt::Vertical .

See also
invertedAppearance, textDirection

Definition at line 68 of file qprogressbar.h.

◆ text

QString QProgressBar::text
private

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.

Definition at line 64 of file qprogressbar.h.

◆ textDirection

QProgressBar::Direction QProgressBar::textDirection
private

the reading direction of the text for vertical progress bars

Since
4.1

This property has no impact on horizontal progress bars. By default, the reading direction is QProgressBar::TopToBottom.

See also
orientation, textVisible

Definition at line 70 of file qprogressbar.h.

◆ textVisible

QProgressBar::textVisible
private

whether the current completed percentage should be displayed

This property may be ignored by the style (e.g., QMacStyle never draws the text).

See also
textDirection

Definition at line 67 of file qprogressbar.h.

◆ value

int QProgressBar::value
private

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.

Definition at line 65 of file qprogressbar.h.

Referenced by QAccessibleProgressBar::currentValue().


The documentation for this class was generated from the following files: