|
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QObject
com.trolltech.qt.gui.QLayout
com.trolltech.qt.gui.QBoxLayout
public class QBoxLayout
The QBoxLayout class lines up child widgets horizontally or vertically.
QBoxLayout takes the space it gets (from its parent layout or from the parentWidget), divides it up into a row of boxes, and makes each managed widget fill one box.
If the QBoxLayout's orientation is Qt::Horizontal the boxes are placed in a row, with suitable sizes. Each widget (or other box) will get at least its minimum size and at most its maximum size. Any excess space is shared according to the stretch factors (more about that below).
If the QBoxLayout's orientation is Qt::Vertical, the boxes are placed in a column, again with suitable sizes.
The easiest way to create a QBoxLayout is to use one of the convenience classes, e.g. QHBoxLayout (for Qt::Horizontal boxes) or QVBoxLayout (for Qt::Vertical boxes). You can also use the QBoxLayout constructor directly, specifying its direction as LeftToRight, RightToLeft, TopToBottom, or BottomToTop.
If the QBoxLayout is not the top-level layout (i.e. it is not managing all of the widget's area and children), you must add it to its parent layout before you can do anything with it. The normal way to add a layout is by calling parentLayout->addLayout.
Once you have done this, you can add boxes to the QBoxLayout using one of four functions:
Use insertWidget, insertSpacing, insertStretch or insertLayout to insert a box at a specified position in the layout.
QBoxLayout also includes two margin widths:
The margin default is provided by the style. The default margin most Qt styles specify is 9 for child widgets and 11 for windows. The spacing defaults to the same as the margin width for a top-level layout, or to the same as the parent layout.
To remove a widget from a layout, call removeWidget. Calling QWidget::hide() on a widget also effectively removes the widget from the layout until QWidget::show() is called.
You will almost always want to use QVBoxLayout and QHBoxLayout rather than QBoxLayout because of their convenient constructors.
Nested Class Summary | |
---|---|
static class |
QBoxLayout.Direction
This type is used to determine the direction of a box layout. |
Nested classes/interfaces inherited from class com.trolltech.qt.gui.QLayout |
---|
QLayout.SizeConstraint |
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
---|
QSignalEmitter.AbstractSignal, QSignalEmitter.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I> |
Constructor Summary | |
---|---|
QBoxLayout(QBoxLayout.Direction arg__1)
Equivalent to QBoxLayout(arg__1, 0). |
|
QBoxLayout(QBoxLayout.Direction arg__1,
QWidget parent)
Constructs a new QBoxLayout with direction arg__1 and parent widget parent. |
Method Summary | |
---|---|
void |
addItem(QLayoutItemInterface arg__1)
This function is reimplemented for internal reasons. |
void |
addLayout(QLayout layout)
Equivalent to addLayout(layout, 0). |
void |
addLayout(QLayout layout,
int stretch)
Adds layout to the end of the box, with serial stretch factor stretch. |
void |
addSpacing(int size)
Adds a non-stretchable space (a QSpacerItem) with size size to the end of this box layout. |
void |
addStretch()
Equivalent to addStretch(0). |
void |
addStretch(int stretch)
Adds a stretchable space (a QSpacerItem) with zero minimum size and stretch factor stretch to the end of this box layout. |
void |
addStrut(int arg__1)
Limits the perpendicular dimension of the box (e.g. height if the box is LeftToRight) to a minimum of arg__1. |
void |
addWidget(QWidget arg__1,
int stretch,
Qt.Alignment alignment)
Adds arg__1 to the end of this box layout, with a stretch factor of stretch and alignment alignment. |
void |
addWidget(QWidget arg__1,
int stretch,
Qt.AlignmentFlag... alignment)
Adds arg__1 to the end of this box layout, with a stretch factor of stretch and alignment alignment. |
int |
count()
This function is reimplemented for internal reasons. |
QBoxLayout.Direction |
direction()
Returns the direction of the box. |
Qt.Orientations |
expandingDirections()
This function is reimplemented for internal reasons. |
static QBoxLayout |
fromNativePointer(QNativePointer nativePointer)
This function returns the QBoxLayout instance pointed to by nativePointer |
boolean |
hasHeightForWidth()
This function is reimplemented for internal reasons. |
int |
heightForWidth(int arg__1)
This function is reimplemented for internal reasons. |
protected void |
insertItem(int index,
QLayoutItemInterface arg__2)
Inserts arg__2 into this box layout at position index. |
void |
insertLayout(int index,
QLayout layout)
Equivalent to insertLayout(index, layout, 0). |
void |
insertLayout(int index,
QLayout layout,
int stretch)
Inserts layout at position index, with stretch factor stretch. |
void |
insertSpacing(int index,
int size)
Inserts a non-stretchable space (a QSpacerItem) at position index, with size size. |
void |
insertStretch(int index)
Equivalent to insertStretch(index, 0). |
void |
insertStretch(int index,
int stretch)
Inserts a stretchable space (a QSpacerItem) at position index, with zero minimum size and stretch factor stretch. |
void |
insertWidget(int index,
QWidget widget)
Equivalent to insertWidget(index, widget, 0, 0). |
void |
insertWidget(int index,
QWidget widget,
int stretch)
Equivalent to insertWidget(index, widget, stretch, 0). |
void |
insertWidget(int index,
QWidget widget,
int stretch,
Qt.Alignment alignment)
Inserts widget at position index, with stretch factor stretch and alignment alignment. |
void |
insertWidget(int index,
QWidget widget,
int stretch,
Qt.AlignmentFlag... alignment)
Inserts widget at position index, with stretch factor stretch and alignment alignment. |
void |
invalidate()
Resets cached information. |
QLayoutItemInterface |
itemAt(int arg__1)
This function is reimplemented for internal reasons. |
QSize |
maximumSize()
This function is reimplemented for internal reasons. |
int |
minimumHeightForWidth(int arg__1)
This function is reimplemented for internal reasons. |
QSize |
minimumSize()
This function is reimplemented for internal reasons. |
void |
setDirection(QBoxLayout.Direction arg__1)
Sets the direction of this layout to arg__1. |
void |
setGeometry(QRect arg__1)
This function is reimplemented for internal reasons. |
void |
setSpacing(int spacing)
Reimplements QLayout::setSpacing(). |
boolean |
setStretchFactor(QLayout l,
int stretch)
Sets the stretch factor for the layout l to stretch and returns true if l is found in this layout (not including child layouts); otherwise returns false. |
boolean |
setStretchFactor(QWidget w,
int stretch)
Sets the stretch factor for w to stretch and returns true if w is found in this layout (not including child layouts); otherwise returns false. |
QSize |
sizeHint()
This function is reimplemented for internal reasons. |
int |
spacing()
Reimplements QLayout::spacing(). |
QLayoutItemInterface |
takeAt(int arg__1)
This function is reimplemented for internal reasons. |
Methods inherited from class com.trolltech.qt.gui.QLayout |
---|
activate, addChildLayout, addChildWidget, addWidget, alignment, alignmentRect, childEvent, closestAcceptableSize, contentsRect, controlTypes, geometry, getContentsMargins, indexOf, isEmpty, isEnabled, layout, menuBar, parentWidget, removeItem, removeWidget, setAlignment, setAlignment, setAlignment, setAlignment, setAlignment, setContentsMargins, setContentsMargins, setEnabled, setMargin, setMenuBar, setSizeConstraint, setWidgetSpacing, sizeConstraint, spacerItem, totalHeightForWidth, totalMaximumSize, totalMinimumSize, totalSizeHint, update, widget, widgetEvent, widgetSpacing |
Methods inherited from class com.trolltech.qt.core.QObject |
---|
blockSignals, children, connectSlotsByName, customEvent, disposeLater, dumpObjectInfo, dumpObjectTree, dynamicPropertyNames, event, eventFilter, findChild, findChild, findChild, findChildren, findChildren, findChildren, findChildren, installEventFilter, isWidgetType, killTimer, moveToThread, objectName, parent, property, removeEventFilter, setObjectName, setParent, setProperty, signalsBlocked, startTimer, thread, timerEvent |
Methods inherited from class com.trolltech.qt.QtJambiObject |
---|
dispose, disposed, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
---|
disconnect, disconnect, signalSender |
Methods inherited from class java.lang.Object |
---|
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
---|
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
---|
public QBoxLayout(QBoxLayout.Direction arg__1)
Equivalent to QBoxLayout(arg__1, 0).
public QBoxLayout(QBoxLayout.Direction arg__1, QWidget parent)
Constructs a new QBoxLayout with direction arg__1 and parent widget parent.
Method Detail |
---|
public final void addLayout(QLayout layout)
Equivalent to addLayout(layout, 0).
public final void addLayout(QLayout layout, int stretch)
Adds layout to the end of the box, with serial stretch factor stretch.
public final void addSpacing(int size)
Adds a non-stretchable space (a QSpacerItem) with size size to the end of this box layout. QBoxLayout provides default margin and spacing. This function adds additional space.
public final void addStretch()
Equivalent to addStretch(0).
public final void addStretch(int stretch)
Adds a stretchable space (a QSpacerItem) with zero minimum size and stretch factor stretch to the end of this box layout.
public final void addStrut(int arg__1)
Limits the perpendicular dimension of the box (e.g. height if the box is LeftToRight) to a minimum of arg__1. Other constraints may increase the limit.
public final void addWidget(QWidget arg__1, int stretch, Qt.AlignmentFlag... alignment)
Adds arg__1 to the end of this box layout, with a stretch factor of stretch and alignment alignment.
The stretch factor applies only in the direction of the QBoxLayout, and is relative to the other boxes and widgets in this QBoxLayout. Widgets and boxes with higher stretch factors grow more.
If the stretch factor is 0 and nothing else in the QBoxLayout has a stretch factor greater than zero, the space is distributed according to the QWidget:sizePolicy() of each widget that's involved.
The alignment is specified by alignment. The default alignment is 0, which means that the widget fills the entire cell.
public final void addWidget(QWidget arg__1, int stretch, Qt.Alignment alignment)
Adds arg__1 to the end of this box layout, with a stretch factor of stretch and alignment alignment.
The stretch factor applies only in the direction of the QBoxLayout, and is relative to the other boxes and widgets in this QBoxLayout. Widgets and boxes with higher stretch factors grow more.
If the stretch factor is 0 and nothing else in the QBoxLayout has a stretch factor greater than zero, the space is distributed according to the QWidget:sizePolicy() of each widget that's involved.
The alignment is specified by alignment. The default alignment is 0, which means that the widget fills the entire cell.
public final QBoxLayout.Direction direction()
Returns the direction of the box. addWidget and addSpacing work in this direction; the stretch stretches in this direction.
protected final void insertItem(int index, QLayoutItemInterface arg__2)
Inserts arg__2 into this box layout at position index. If index is negative, the item is added at the end.
public final void insertLayout(int index, QLayout layout)
Equivalent to insertLayout(index, layout, 0).
public final void insertLayout(int index, QLayout layout, int stretch)
Inserts layout at position index, with stretch factor stretch. If index is negative, the layout is added at the end.
layout becomes a child of the box layout.
public final void insertSpacing(int index, int size)
Inserts a non-stretchable space (a QSpacerItem) at position index, with size size. If index is negative the space is added at the end.
The box layout has default margin and spacing. This function adds additional space.
public final void insertStretch(int index)
Equivalent to insertStretch(index, 0).
public final void insertStretch(int index, int stretch)
Inserts a stretchable space (a QSpacerItem) at position index, with zero minimum size and stretch factor stretch. If index is negative the space is added at the end.
public final void insertWidget(int index, QWidget widget, int stretch, Qt.AlignmentFlag... alignment)
Inserts widget at position index, with stretch factor stretch and alignment alignment. If index is negative, the widget is added at the end.
The stretch factor applies only in the direction of the QBoxLayout, and is relative to the other boxes and widgets in this QBoxLayout. Widgets and boxes with higher stretch factors grow more.
If the stretch factor is 0 and nothing else in the QBoxLayout has a stretch factor greater than zero, the space is distributed according to the QWidget:sizePolicy() of each widget that's involved.
The alignment is specified by alignment. The default alignment is 0, which means that the widget fills the entire cell.
public final void insertWidget(int index, QWidget widget, int stretch)
Equivalent to insertWidget(index, widget, stretch, 0).
public final void insertWidget(int index, QWidget widget)
Equivalent to insertWidget(index, widget, 0, 0).
public final void insertWidget(int index, QWidget widget, int stretch, Qt.Alignment alignment)
Inserts widget at position index, with stretch factor stretch and alignment alignment. If index is negative, the widget is added at the end.
The stretch factor applies only in the direction of the QBoxLayout, and is relative to the other boxes and widgets in this QBoxLayout. Widgets and boxes with higher stretch factors grow more.
If the stretch factor is 0 and nothing else in the QBoxLayout has a stretch factor greater than zero, the space is distributed according to the QWidget:sizePolicy() of each widget that's involved.
The alignment is specified by alignment. The default alignment is 0, which means that the widget fills the entire cell.
public final void setDirection(QBoxLayout.Direction arg__1)
Sets the direction of this layout to arg__1.
public final void setSpacing(int spacing)
Reimplements QLayout::setSpacing(). Sets the spacing property to spacing.
public final boolean setStretchFactor(QLayout l, int stretch)
Sets the stretch factor for the layout l to stretch and returns true if l is found in this layout (not including child layouts); otherwise returns false.
public final boolean setStretchFactor(QWidget w, int stretch)
Sets the stretch factor for w to stretch and returns true if w is found in this layout (not including child layouts); otherwise returns false.
public final int spacing()
Reimplements QLayout::spacing(). If the spacing property is valid, that value is returned. Otherwise, a value for the spacing property is computed and returned. Since layout spacing in a widget is style dependent, if the parent is a widget, it queries the style for the (horizontal or vertical) spacing of the layout. Otherwise, the parent is a layout, and it queries the parent layout for the spacing.
public void addItem(QLayoutItemInterface arg__1)
This function is reimplemented for internal reasons.
addItem
in class QLayout
public int count()
This function is reimplemented for internal reasons.
count
in class QLayout
public Qt.Orientations expandingDirections()
This function is reimplemented for internal reasons.
expandingDirections
in interface QLayoutItemInterface
expandingDirections
in class QLayout
public boolean hasHeightForWidth()
This function is reimplemented for internal reasons.
hasHeightForWidth
in interface QLayoutItemInterface
hasHeightForWidth
in class QLayout
public int heightForWidth(int arg__1)
This function is reimplemented for internal reasons.
heightForWidth
in interface QLayoutItemInterface
heightForWidth
in class QLayout
public void invalidate()
Resets cached information.
invalidate
in interface QLayoutItemInterface
invalidate
in class QLayout
public QLayoutItemInterface itemAt(int arg__1)
This function is reimplemented for internal reasons.
itemAt
in class QLayout
public QSize maximumSize()
This function is reimplemented for internal reasons.
maximumSize
in interface QLayoutItemInterface
maximumSize
in class QLayout
public int minimumHeightForWidth(int arg__1)
This function is reimplemented for internal reasons.
minimumHeightForWidth
in interface QLayoutItemInterface
minimumHeightForWidth
in class QLayout
public QSize minimumSize()
This function is reimplemented for internal reasons.
minimumSize
in interface QLayoutItemInterface
minimumSize
in class QLayout
public void setGeometry(QRect arg__1)
This function is reimplemented for internal reasons.
setGeometry
in interface QLayoutItemInterface
setGeometry
in class QLayout
public QSize sizeHint()
This function is reimplemented for internal reasons.
sizeHint
in interface QLayoutItemInterface
sizeHint
in class QLayout
public QLayoutItemInterface takeAt(int arg__1)
This function is reimplemented for internal reasons.
takeAt
in class QLayout
public static QBoxLayout fromNativePointer(QNativePointer nativePointer)
nativePointer
- the QNativePointer of which object should be returned.
|
|
||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |