Introduced QQuickCanvas::releaseResources().

This function can be used in certain situations to purge the texture cache
and triggers more lazily to take down the scene graph and GL context

Change-Id: Icd9360ff50fda0e721ba0f1b520cda678e457a35
Reviewed-by: Aaron Kennedy <aaron.kennedy@nokia.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/src/quick/util/qdeclarativepixmapcache.cpp b/src/quick/util/qdeclarativepixmapcache.cpp
index 43ce3346cb..95cbd361b8 100644
--- a/src/quick/util/qdeclarativepixmapcache.cpp
+++ b/src/quick/util/qdeclarativepixmapcache.cpp
@@ -695,6 +695,8 @@ public:
     void unreferencePixmap(QDeclarativePixmapData *);
     void referencePixmap(QDeclarativePixmapData *);
 
+    void purgeCache();
+
 protected:
     virtual void timerEvent(QTimerEvent *);
 
@@ -827,6 +829,16 @@ void QDeclarativePixmapStore::timerEvent(QTimerEvent *)
     }
 }
 
+void QDeclarativePixmapStore::purgeCache()
+{
+    shrinkCache(m_unreferencedCost);
+}
+
+void QDeclarativePixmap::purgeCache()
+{
+    pixmapStore()->purgeCache();
+}
+
 QDeclarativePixmapReply::QDeclarativePixmapReply(QDeclarativePixmapData *d)
 : data(d), engineForReader(0), requestSize(d->requestSize), url(d->url), loading(false), redirectCount(0)
 {
diff --git a/src/quick/util/qdeclarativepixmapcache_p.h b/src/quick/util/qdeclarativepixmapcache_p.h
index 19c3a5264f..69cd84c465 100644
--- a/src/quick/util/qdeclarativepixmapcache_p.h
+++ b/src/quick/util/qdeclarativepixmapcache_p.h
@@ -126,6 +126,8 @@ public:
     bool connectDownloadProgress(QObject *, const char *);
     bool connectDownloadProgress(QObject *, int);
 
+    static void purgeCache();
+
 private:
     Q_DISABLE_COPY(QDeclarativePixmap)
     QDeclarativePixmapData *d;