diff options
Diffstat (limited to 'src/declarative/util/qdeclarativepixmapcache.cpp')
-rw-r--r-- | src/declarative/util/qdeclarativepixmapcache.cpp | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/src/declarative/util/qdeclarativepixmapcache.cpp b/src/declarative/util/qdeclarativepixmapcache.cpp index a83cac8..9ced14f 100644 --- a/src/declarative/util/qdeclarativepixmapcache.cpp +++ b/src/declarative/util/qdeclarativepixmapcache.cpp @@ -70,6 +70,16 @@ QT_BEGIN_NAMESPACE +// The cache limit describes the maximum "junk" in the cache. +// These are the same defaults as QPixmapCache +#if defined(Q_OS_SYMBIAN) +static int cache_limit = 1024 * 1024; // 1048 KB cache limit for symbian +#elif defined(Q_WS_QWS) || defined(Q_WS_WINCE) +static int cache_limit = 2048 * 1024; // 2048 KB cache limit for embedded +#else +static int cache_limit = 10240 * 1024; // 10 MB cache limit for desktop +#endif + class QDeclarativePixmapReader; class QDeclarativePixmapData; class QDeclarativePixmapReply : public QObject @@ -580,6 +590,8 @@ public: QHash<QDeclarativePixmapKey, QDeclarativePixmapData *> m_cache; private: + void shrinkCache(int remove); + QDeclarativePixmapData *m_unreferencedPixmaps; QDeclarativePixmapData *m_lastUnreferencedPixmap; @@ -613,7 +625,9 @@ void QDeclarativePixmapStore::unreferencePixmap(QDeclarativePixmapData *data) m_unreferencedCost += data->cost(); - if (m_timerId == -1) + shrinkCache(-1); // Shrink the cache incase it has become larger than cache_limit + + if (m_timerId == -1 && m_unreferencedPixmaps) m_timerId = startTimer(CACHE_EXPIRE_TIME * 1000); } @@ -636,11 +650,9 @@ void QDeclarativePixmapStore::referencePixmap(QDeclarativePixmapData *data) m_unreferencedCost -= data->cost(); } -void QDeclarativePixmapStore::timerEvent(QTimerEvent *) +void QDeclarativePixmapStore::shrinkCache(int remove) { - int removalCost = m_unreferencedCost / CACHE_REMOVAL_FRACTION; - - while (removalCost > 0 && m_lastUnreferencedPixmap) { + while ((remove > 0 || m_unreferencedCost > cache_limit) && m_lastUnreferencedPixmap) { QDeclarativePixmapData *data = m_lastUnreferencedPixmap; Q_ASSERT(data->nextUnreferenced == 0); @@ -649,10 +661,17 @@ void QDeclarativePixmapStore::timerEvent(QTimerEvent *) data->prevUnreferencedPtr = 0; data->prevUnreferenced = 0; - removalCost -= data->cost(); + remove -= data->cost(); data->removeFromCache(); delete data; } +} + +void QDeclarativePixmapStore::timerEvent(QTimerEvent *) +{ + int removalCost = m_unreferencedCost / CACHE_REMOVAL_FRACTION; + + shrinkCache(removalCost); if (m_unreferencedPixmaps == 0) { killTimer(m_timerId); @@ -702,7 +721,7 @@ bool QDeclarativePixmapReply::event(QEvent *event) int QDeclarativePixmapData::cost() const { - return pixmap.width() * pixmap.height() * pixmap.depth(); + return (pixmap.width() * pixmap.height() * pixmap.depth()) / 8; } void QDeclarativePixmapData::addref() |