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kdeui: do not use disk storage for icon cache

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Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2016-04-05 00:50:09 +00:00
parent 51585c6b15
commit ef15158907
1 changed files with 17 additions and 10 deletions
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27
kdeui/icons/kiconloader.cpp
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@ -283,7 +283,7 @@ public:
QList<KIconThemeNode *> links;
// This shares the icons across all processes
KSharedDataCache* mIconCache;
QSharedPointer<QCache<QString, QByteArray> >* mIconCache;
// This caches rendered QPixmaps in just this process.
QCache<QString, PixmapWithPath> mPixmapCache;
@ -465,10 +465,9 @@ void KIconLoaderPrivate::init( const QString& _appname, KStandardDirs *_dirs )
appname = KGlobal::mainComponent().componentName();
// Initialize icon cache
mIconCache = new KSharedDataCache("icon-cache", 10 * 1024 * 1024);
// Cost here is number of pixels, not size. So this is actually a bit
// smaller.
mPixmapCache.setMaxCost(10 * 1024 * 1024);
mIconCache = new QSharedPointer<QCache<QString, QByteArray> >(new QCache<QString, QByteArray>());
mIconCache->data()->setMaxCost(10240);
mPixmapCache.setMaxCost(10240);
// These have to match the order in kicontheme.h
static const char * const groups[] = { "Desktop", "Toolbar", "MainToolbar", "Small", "Panel", "Dialog", 0L };
@ -800,6 +799,13 @@ void KIconLoaderPrivate::insertCachedPixmapWithPath(
const QPixmap &data,
const QString &path = QString())
{
// reject anything bigger than 1024x1024, it is questionable what limit should be because
// in some projects the icon loader is abused with pixmaps bigger than that
if (data.width() > 1024 || data.height() > 1024) {
kWarning(264) << "trying to insert pixmap bigger than 1024x1024 with path:" << path;
return;
}
// Even if the pixmap is null, we add it to the caches so that we record
// the fact that whatever icon led to us getting a null pixmap doesn't
// exist.
@ -817,8 +823,9 @@ void KIconLoaderPrivate::insertCachedPixmapWithPath(
output.close();
// The byte array contained in the QBuffer is what we want in the cache.
mIconCache->insert(key, output.buffer());
// The byte array contained in the QBuffer is what we want in the cache
// and we do not want a reference to the buffer so hard-copy it.
mIconCache->data()->insert(key, new QByteArray(output.buffer()));
// Also insert the object into our process-local cache for even more
// speed.
@ -843,14 +850,14 @@ bool KIconLoaderPrivate::findCachedPixmapWithPath(const QString &key, QPixmap &d
// Otherwise try to find it in our shared memory cache since that will
// be quicker than the disk, especially for SVGs.
QByteArray result;
QByteArray *result = mIconCache->data()->object(key);
if (!mIconCache->find(key, &result) || result.isEmpty()) {
if (!result || result->isEmpty()) {
return false;
}
QBuffer buffer;
buffer.setBuffer(&result);
buffer.setBuffer(result);
buffer.open(QIODevice::ReadOnly);
QDataStream inputStream(&buffer);