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Qt 4.8
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Qt 4.8
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Public Functions | |
| bool | hasHeightForWidth () const |
| Returns true if this layout's preferred height depends on its width; otherwise returns false. More... | |
| int | heightForWidth (int width) const |
| Returns the preferred height for this layout item, given the width w. More... | |
| QStackedLayoutHFW (QWidget *parent=0) | |
 Public Functions inherited from QStackedLayout | |
| void | addItem (QLayoutItem *item) |
| Reimplemented Function More... | |
| int | addWidget (QWidget *w) |
| Adds the given widget to the end of this layout and returns the index position of the widget. More... | |
| int | count () const |
| the number of widgets contained in the layout More... | |
| int | currentIndex () const |
| QWidget * | currentWidget () const |
| Returns the current widget, or 0 if there are no widgets in this layout. More... | |
| int | insertWidget (int index, QWidget *w) |
| Inserts the given widget at the given index in this QStackedLayout. More... | |
| QLayoutItem * | itemAt (int) const |
| Reimplemented Function More... | |
| QSize | minimumSize () const |
| Reimplemented Function More... | |
| QStackedLayout () | |
| Constructs a QStackedLayout with no parent. More... | |
| QStackedLayout (QWidget *parent) | |
| Constructs a new QStackedLayout with the given parent. More... | |
| QStackedLayout (QLayout *parentLayout) | |
| Constructs a new QStackedLayout and inserts it into the given parentLayout. More... | |
| void | setGeometry (const QRect &rect) |
| Reimplemented Function More... | |
| void | setStackingMode (StackingMode stackingMode) |
| QSize | sizeHint () const |
| Reimplemented Function More... | |
| StackingMode | stackingMode () const |
| QLayoutItem * | takeAt (int) |
| Reimplemented Function More... | |
| QWidget * | widget (int) const |
| Returns the widget at the given index, or 0 if there is no widget at the given position. More... | |
| ~QStackedLayout () | |
| Destroys this QStackedLayout. More... | |
| Public Functions inherited from QLayout | |
| bool | activate () |
| Redoes the layout for parentWidget() if necessary. More... | |
| void | addWidget (QWidget *w) |
| Adds widget w to this layout in a manner specific to the layout. More... | |
| QMargins | contentsMargins () const |
| Returns the margins used around the layout. More... | |
| QRect | contentsRect () const |
| Returns the layout's geometry() rectangle, but taking into account the contents margins. More... | |
| Qt::Orientations | expandingDirections () const |
| Returns whether this layout can make use of more space than sizeHint(). More... | |
| QRect | geometry () const |
| Reimplemented Function More... | |
| void | getContentsMargins (int *left, int *top, int *right, int *bottom) const |
| virtual int | indexOf (QWidget *) const |
| Searches for widget widget in this layout (not including child layouts). More... | |
| void | invalidate () |
| Reimplemented Function More... | |
| bool | isEmpty () const |
| Reimplemented Function More... | |
| bool | isEnabled () const |
| Returns true if the layout is enabled; otherwise returns false. More... | |
| QLayout * | layout () |
| Reimplemented Function More... | |
| int | margin () const |
| QSize | maximumSize () const |
| Returns the maximum size of this layout. More... | |
| QWidget * | menuBar () const |
| Returns the menu bar set for this layout, or 0 if no menu bar is set. More... | |
| QWidget * | parentWidget () const |
| Returns the parent widget of this layout, or 0 if this layout is not installed on any widget. More... | |
| QLayout (QWidget *parent) | |
| Constructs a new top-level QLayout, with parent parent. More... | |
| QLayout () | |
| Constructs a new child QLayout. More... | |
| void | removeItem (QLayoutItem *) |
| Removes the layout item item from the layout. More... | |
| void | removeWidget (QWidget *w) |
| Removes the widget widget from the layout. More... | |
| bool | setAlignment (QWidget *w, Qt::Alignment alignment) |
| Sets the alignment for widget w to alignment and returns true if w is found in this layout (not including child layouts); otherwise returns false. More... | |
| bool | setAlignment (QLayout *l, Qt::Alignment alignment) |
| Sets the alignment for the layout l to alignment and returns true if l is found in this layout (not including child layouts); otherwise returns false. More... | |
| void | setContentsMargins (int left, int top, int right, int bottom) |
| Sets the left, top, right, and bottom margins to use around the layout. More... | |
| void | setContentsMargins (const QMargins &margins) |
| Sets the margins to use around the layout. More... | |
| void | setEnabled (bool) |
| Enables this layout if enable is true, otherwise disables it. More... | |
| void | setMargin (int) |
| void | setMenuBar (QWidget *w) |
| Tells the geometry manager to place the menu bar widget at the top of parentWidget(), outside QWidget::contentsMargins(). More... | |
| void | setSizeConstraint (SizeConstraint) |
| void | setSpacing (int) |
| SizeConstraint | sizeConstraint () const |
| int | spacing () const |
| int | totalHeightForWidth (int w) const |
| Also takes contentsMargins and menu bar into account. More... | |
| QSize | totalMaximumSize () const |
| Also takes contentsMargins and menu bar into account. More... | |
| QSize | totalMinimumSize () const |
| Also takes contentsMargins and menu bar into account. More... | |
| QSize | totalSizeHint () const |
| Also takes contentsMargins and menu bar into account. More... | |
| void | update () |
| Updates the layout for parentWidget(). More... | |
| ~QLayout () | |
| Destroys the layout, deleting all child layouts. 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 QObjectList & | children () 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< QByteArray > | dynamicPropertyNames () const |
| Returns the names of all properties that were dynamically added to the object using setProperty(). More... | |
| virtual bool | event (QEvent *) |
| This virtual function receives events to an object and should return true if the event e was recognized and processed. 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 > | |
| 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 QMetaObject * | metaObject () 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 |
| QObject * | parent () 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... | |
| QThread * | thread () const |
| Returns the thread in which the object lives. More... | |
| QObjectUserData * | userData (uint id) const |
| virtual | ~QObject () |
| Destroys the object, deleting all its child objects. More... | |
| Public Functions inherited from QLayoutItem | |
| Qt::Alignment | alignment () const |
| Returns the alignment of this item. More... | |
| QSizePolicy::ControlTypes | controlTypes () const |
| Returns the control type(s) for the layout item. More... | |
| virtual int | minimumHeightForWidth (int) const |
| Returns the minimum height this widget needs for the given width, w. More... | |
| QLayoutItem (Qt::Alignment alignment=0) | |
| Constructs a layout item with an alignment. More... | |
| void | setAlignment (Qt::Alignment a) |
| Sets the alignment of this item to alignment. More... | |
| virtual QSpacerItem * | spacerItem () |
| If this item is a QSpacerItem, it is returned as a QSpacerItem; otherwise 0 is returned. More... | |
| virtual QWidget * | widget () |
| If this item is a QWidget, it is returned as a QWidget; otherwise 0 is returned. More... | |
| virtual | ~QLayoutItem () |
| Destroys the QLayoutItem. More... | |
Additional Inherited Members | |
| Public Types inherited from QStackedLayout | |
| enum | StackingMode { StackOne, StackAll } |
| This enum specifies how the layout handles its child widgets regarding their visibility. More... | |
| Public Types inherited from QLayout | |
| enum | SizeConstraint { SetDefaultConstraint, SetNoConstraint, SetMinimumSize, SetFixedSize, SetMaximumSize, SetMinAndMaxSize } |
| The possible values are: More... | |
| Public Slots inherited from QStackedLayout | |
| void | setCurrentIndex (int index) |
| void | setCurrentWidget (QWidget *w) |
| Sets the current widget to be the specified widget. More... | |
| Public Slots inherited from QObject | |
| void | deleteLater () |
| Schedules this object for deletion. More... | |
| Signals inherited from QStackedLayout | |
| void | currentChanged (int index) |
| This signal is emitted whenever the current widget in the layout changes. More... | |
| void | widgetRemoved (int index) |
| This signal is emitted whenever a widget is removed from the layout. 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... | |
| Static Public Functions inherited from QLayout | |
| static QSize | closestAcceptableSize (const QWidget *w, const QSize &s) |
| Returns a size that satisfies all size constraints on widget, including heightForWidth() and that is as close as possible to size. 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 Variables inherited from QObject | |
| static const QMetaObject | staticMetaObject |
| This variable stores the meta-object for the class. More... | |
| Protected Functions inherited from QLayout | |
| void | addChildLayout (QLayout *l) |
This function is called from addLayout() or insertLayout() functions in subclasses to add layout l as a sub-layout. More... | |
| void | addChildWidget (QWidget *w) |
This function is called from addWidget() functions in subclasses to add w as a managed widget of a layout. More... | |
| bool | adoptLayout (QLayout *layout) |
| QRect | alignmentRect (const QRect &) const |
| Returns the rectangle that should be covered when the geometry of this layout is set to r, provided that this layout supports setAlignment(). More... | |
| void | childEvent (QChildEvent *e) |
| Reimplemented Function More... | |
| QLayout (QLayoutPrivate &d, QLayout *, QWidget *) | |
| void | widgetEvent (QEvent *) |
| Performs child widget layout when the parent widget is resized. More... | |
| Protected Functions inherited from QObject | |
| 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... | |
| QObject * | sender () 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 Variables inherited from QObject | |
| QScopedPointer< QObjectData > | d_ptr |
| Protected Variables inherited from QLayoutItem | |
| Qt::Alignment | align |
| Static Protected Variables inherited from QObject | |
| static const QMetaObject | staticQtMetaObject |
| Related Functions inherited from QObject | |
| T | qFindChildqFindChildren (const QObject *obj, const QString &name)() |
| QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QString &name)() |
| QList< T > | qFindChildrenqFindChildren (const QObject *obj, const QRegExp ®Exp)() |
| T * | qobject_cast (QObject *object) |
| QObjectList | |
| void * | qt_find_obj_child (QObject *parent, const char *type, const QString &name) |
| Returns a pointer to the object named name that inherits type and with a given parent. More... | |
QStackedLayout does not support height for width (simply because it does not reimplement heightForWidth() and hasHeightForWidth()). That is not possible to fix without breaking binary compatibility. (QLayout is subject to multiple inheritance). However, we can fix QStackedWidget by simply using a modified version of QStackedLayout that reimplements the hfw-related functions:
Definition at line 59 of file qstackedwidget.cpp.
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inline |
Definition at line 62 of file qstackedwidget.cpp.
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virtual |
Returns true if this layout's preferred height depends on its width; otherwise returns false.
The default implementation returns false.
Reimplement this function in layout managers that support height for width.
Reimplemented from QLayoutItem.
Definition at line 67 of file qstackedwidget.cpp.
Referenced by QStackedLayoutHFW().
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virtual |
Returns the preferred height for this layout item, given the width w.
The default implementation returns -1, indicating that the preferred height is independent of the width of the item. Using the function hasHeightForWidth() will typically be much faster than calling this function and testing for -1.
Reimplement this function in layout managers that support height for width. A typical implementation will look like this:
Caching is strongly recommended; without it layout will take exponential time.
Reimplemented from QLayoutItem.
Definition at line 80 of file qstackedwidget.cpp.
Referenced by QStackedLayoutHFW().