com.trolltech.qt.gui
Class QPaintEvent

java.lang.Object
  extended by com.trolltech.qt.internal.QSignalEmitterInternal
      extended by com.trolltech.qt.QSignalEmitter
          extended by com.trolltech.qt.QtJambiObject
              extended by com.trolltech.qt.core.QEvent
                  extended by com.trolltech.qt.gui.QPaintEvent
All Implemented Interfaces:
QtJambiInterface

public class QPaintEvent
extends QEvent

The QPaintEvent class contains event parameters for paint events. Paint events are sent to widgets that need to update themselves, for instance when part of a widget is exposed because a covering widget was moved.

The event contains a region() that needs to be updated, and a rect() that is the bounding rectangle of that region. Both are provided because many widgets can't make much use of region(), and rect() can be much faster than region().boundingRect(). Painting is clipped to region() during the processing of a paint event.

See also:
QPainter, QWidget::update(), QWidget::repaint(), and QWidget::paintEvent().


Nested Class Summary
 
Nested classes/interfaces inherited from class com.trolltech.qt.core.QEvent
QEvent.Type
 
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
QSignalEmitter.AbstractSignal, QSignalEmitter.PrivateSignal0, QSignalEmitter.PrivateSignal1, QSignalEmitter.PrivateSignal2, QSignalEmitter.PrivateSignal3, QSignalEmitter.PrivateSignal4, QSignalEmitter.PrivateSignal5, QSignalEmitter.PrivateSignal6, QSignalEmitter.PrivateSignal7, QSignalEmitter.PrivateSignal8, QSignalEmitter.PrivateSignal9, QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9
 
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal
 
Field Summary
 
Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
currentSender
 
Constructor Summary
QPaintEvent(QRect paintRect)
          Constructs a paint event object with the rectangle that needs to be updated.
QPaintEvent(QRegion paintRegion)
          Constructs a paint event object with the region that needs to be updated.
 
Method Summary
protected  boolean m_erased()
           
protected  QRect m_rect()
           
protected  QRegion m_region()
           
 QRect rect()
          Returns the rectangle that needs to be updated.
 QRegion region()
          Returns the region that needs to be updated.
protected  void setM_erased(boolean m_erased)
           
protected  void setM_rect(QRect m_rect)
           
protected  void setM_region(QRegion m_region)
           
 java.lang.String toString()
          Returns a string representation of the this QPaintEvent.
 
Methods inherited from class com.trolltech.qt.core.QEvent
accept, ignore, isAccepted, registerEventType, registerEventType, setAccepted, setT, spontaneous, t, type
 
Methods inherited from class com.trolltech.qt.QtJambiObject
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr
 
Methods inherited from class com.trolltech.qt.QSignalEmitter
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread
 
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal
__qt_signalInitialization
 
Methods inherited from class java.lang.Object
clone, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.trolltech.qt.QtJambiInterface
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership
 

Constructor Detail

QPaintEvent

public QPaintEvent(QRect paintRect)
Constructs a paint event object with the rectangle that needs to be updated. The region is specified by paintRect.


QPaintEvent

public QPaintEvent(QRegion paintRegion)
Constructs a paint event object with the region that needs to be updated. The region is specified by paintRegion.

Method Detail

rect

public final QRect rect()
Returns the rectangle that needs to be updated.

See also:
region(), and QPainter::setClipRect().


region

public final QRegion region()
Returns the region that needs to be updated.

See also:
rect(), and QPainter::setClipRegion().


setM_rect

protected final void setM_rect(QRect m_rect)

m_rect

protected final QRect m_rect()

setM_erased

protected final void setM_erased(boolean m_erased)

m_erased

protected final boolean m_erased()

setM_region

protected final void setM_region(QRegion m_region)

m_region

protected final QRegion m_region()

toString

public java.lang.String toString()
Returns a string representation of the this QPaintEvent.

Overrides:
toString in class QEvent