diff options
Diffstat (limited to 'src/gui/image/qpixmapcache.cpp')
| -rw-r--r-- | src/gui/image/qpixmapcache.cpp | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/gui/image/qpixmapcache.cpp b/src/gui/image/qpixmapcache.cpp index cef5c49..81071ee 100644 --- a/src/gui/image/qpixmapcache.cpp +++ b/src/gui/image/qpixmapcache.cpp @@ -82,10 +82,17 @@ QT_BEGIN_NAMESPACE A pixmap takes roughly (\e{width} * \e{height} * \e{depth})/8 bytes of memory. + The \e{Qt Quarterly} article + \l{http://qt.nokia.com/doc/qq/qq12-qpixmapcache.html}{Optimizing + with QPixmapCache} explains how to use QPixmapCache to speed up + applications by caching the results of painting. + \sa QCache, QPixmap */ -#if defined(Q_WS_QWS) || defined(Q_WS_WINCE) +#if defined(Q_OS_SYMBIAN) +static int cache_limit = 1024; // 1048 KB cache limit for symbian +#elif defined(Q_WS_QWS) || defined(Q_WS_WINCE) static int cache_limit = 2048; // 2048 KB cache limit for embedded #else static int cache_limit = 10240; // 10 MB cache limit for desktop @@ -365,7 +372,8 @@ void QPMCache::resizeKeyArray(int size) { if (size <= keyArraySize || size == 0) return; - keyArray = reinterpret_cast<int *>(realloc(keyArray, size * sizeof(int))); + keyArray = q_check_ptr(reinterpret_cast<int *>(realloc(keyArray, + size * sizeof(int)))); for (int i = keyArraySize; i != size; ++i) keyArray[i] = i + 1; keyArraySize = size; @@ -607,7 +615,12 @@ void QPixmapCache::remove(const Key &key) void QPixmapCache::clear() { - pm_cache()->clear(); + QT_TRY { + pm_cache()->clear(); + } QT_CATCH(const std::bad_alloc &) { + // if we ran out of memory during pm_cache(), it's no leak, + // so just ignore it. + } } QT_END_NAMESPACE |