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java.lang.Objectcom.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.gui.QStyleOption
com.trolltech.qt.gui.QStyleOptionGraphicsItem
public class QStyleOptionGraphicsItem
The QStyleOptionGraphicsItem class is used to describe the parameters needed to draw a QGraphicsItem
. For performance reasons, the access to the member variables is direct (i.e., using the . or -> operator). This low-level feel makes the structures straightforward to use and emphasizes that these are simply parameters.
For an example demonstrating how style options can be used, see the Styles example.
QStyleOption
, and QGraphicsItem::paint()
.
Nested Class Summary | |
---|---|
static class |
QStyleOptionGraphicsItem.StyleOptionType
This enum is used to hold information about the type of the style option, and is defined for each QStyleOption subclass. |
static class |
QStyleOptionGraphicsItem.StyleOptionVersion
This enum is used to hold information about the version of the style option, and is defined for each QStyleOption subclass. |
Nested classes/interfaces inherited from class com.trolltech.qt.gui.QStyleOption |
---|
QStyleOption.OptionType |
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal |
Field Summary |
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Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
currentSender |
Constructor Summary | |
---|---|
QStyleOptionGraphicsItem()
Constructs a QStyleOptionGraphicsItem. |
|
QStyleOptionGraphicsItem(QStyleOptionGraphicsItem other)
Constructs a copy of other. |
Method Summary | |
---|---|
QStyleOptionGraphicsItem |
clone()
This method is reimplemented for internal reasons |
QRectF |
exposedRect()
This variable holds the exposed rectangle, in item coordinates. |
double |
levelOfDetail()
This variable holds a simple metric for determining an item's level of detail. |
QMatrix |
matrix()
This variable holds the complete transformation matrix for the item. |
void |
setExposedRect(QRectF exposedRect)
This variable holds the exposed rectangle, in item coordinates. |
void |
setLevelOfDetail(double levelOfDetail)
This variable holds a simple metric for determining an item's level of detail. |
void |
setMatrix(QMatrix matrix)
This variable holds the complete transformation matrix for the item. |
Methods inherited from class com.trolltech.qt.gui.QStyleOption |
---|
direction, fontMetrics, initFrom, palette, rect, setDirection, setFontMetrics, setPalette, setRect, setState, setState, setType, setVersion, state, type, version |
Methods inherited from class com.trolltech.qt.QtJambiObject |
---|
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
---|
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread |
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
__qt_signalInitialization |
Methods inherited from class java.lang.Object |
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getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
---|
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
---|
public QStyleOptionGraphicsItem()
public QStyleOptionGraphicsItem(QStyleOptionGraphicsItem other)
Method Detail |
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public final void setExposedRect(QRectF exposedRect)
QGraphicsItem::boundingRect()
.
public final QRectF exposedRect()
QGraphicsItem::boundingRect()
.
public final void setMatrix(QMatrix matrix)
To find the dimentions of an item in screen coordinates (i.e., pixels), you can use the mapping functions of QMatrix
, such as QMatrix::map()
.
public final QMatrix matrix()
To find the dimentions of an item in screen coordinates (i.e., pixels), you can use the mapping functions of QMatrix
, such as QMatrix::map()
.
public final void setLevelOfDetail(double levelOfDetail)
For more advanced level-of-detail metrics, use QStyleOptionGraphicsItem::matrix directly.
public final double levelOfDetail()
For more advanced level-of-detail metrics, use QStyleOptionGraphicsItem::matrix directly.
public QStyleOptionGraphicsItem clone()
clone
in class QStyleOption
|
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