QGraphicsItemCache Class Reference

#include <qgraphicsitem_p.h>

Classes
struct	DeviceData

Public Functions
void	purge ()
	Empty all cached pixmaps from the pixmap cache. More...
	QGraphicsItemCache ()

Public Variables
bool	allExposed
QRect	boundingRect
QMap< QPaintDevice *, DeviceData >	deviceData
QVector< QRectF >	exposed
QSize	fixedSize
QPixmapCache::Key	key

Detailed Description

Definition at line 131 of file qgraphicsitem_p.h.

Constructors and Destructors

QGraphicsItemCache()

QGraphicsItemCache::QGraphicsItemCache ( )

inline

Definition at line 134 of file qgraphicsitem_p.h.

: allExposed(false) { }

Functions

purge()

void QGraphicsItemCache::purge

(

)

Empty all cached pixmaps from the pixmap cache.

Warning

This function is not part of the public interface.

Definition at line 1437 of file qgraphicsitem.cpp.

Referenced by QGraphicsItemPrivate::removeExtraItemCache(), QGraphicsItem::setCacheMode(), and QGraphicsItemPrivate::setVisibleHelper().

{
    QPixmapCache::remove(key);
    key = QPixmapCache::Key();
    QMutableMapIterator<QPaintDevice *, DeviceData> it(deviceData);
    while (it.hasNext()) {
        DeviceData &data = it.next().value();
        QPixmapCache::remove(data.key);
        data.cacheIndent = QPoint();
    }
    deviceData.clear();
    allExposed = true;
    exposed.clear();
}

Properties

allExposed

bool QGraphicsItemCache::allExposed

Definition at line 152 of file qgraphicsitem_p.h.

Referenced by QGraphicsScenePrivate::drawItemHelper(), QGraphicsItem::scroll(), and QGraphicsItem::update().

boundingRect

QRect QGraphicsItemCache::boundingRect

Definition at line 137 of file qgraphicsitem_p.h.

Referenced by QGraphicsScenePrivate::drawItemHelper(), and QGraphicsItem::scroll().

deviceData

QMap<QPaintDevice *, DeviceData> QGraphicsItemCache::deviceData

Definition at line 148 of file qgraphicsitem_p.h.

Referenced by QGraphicsScenePrivate::drawItemHelper().

exposed

QVector<QRectF> QGraphicsItemCache::exposed

Definition at line 151 of file qgraphicsitem_p.h.

Referenced by QGraphicsScenePrivate::drawItemHelper(), QGraphicsItem::scroll(), and QGraphicsItem::update().

fixedSize

QSize QGraphicsItemCache::fixedSize

Definition at line 138 of file qgraphicsitem_p.h.

Referenced by QGraphicsScenePrivate::drawItemHelper(), QGraphicsItem::scroll(), and QGraphicsItem::setCacheMode().

key

QPixmapCache::Key QGraphicsItemCache::key

Definition at line 139 of file qgraphicsitem_p.h.

Referenced by QGraphicsScenePrivate::drawItemHelper(), and QGraphicsItem::scroll().

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

• /src/gui/graphicsview/qgraphicsitem_p.h
• /src/gui/graphicsview/qgraphicsitem.cpp