fixed some leaks

src/pdf/XPDFRenderer.cpp

@@ -25,6 +25,8 @@ QAtomicInt XPDFRenderer::sInstancesCount = 0;
 
 XPDFRenderer::XPDFRenderer(const QString &filename, bool importingFile)
     : mDocument(0)
+    , mpSplashBitmap(0)
+    , mSplash(0)
 {
     if (!globalParams)
     {
@@ -48,6 +50,17 @@ XPDFRenderer::XPDFRenderer(const QString &filename, bool importingFile)
 
 XPDFRenderer::~XPDFRenderer()
 {
+    qDeleteAll(mThumbs);
+    mThumbs.clear();
+
+    qDeleteAll(mNumPageToPageMap);
+    mNumPageToPageMap.clear();
+
+    if(mSplash){
+        delete mSplash;
+        mSplash = NULL;
+    }
+
     if (mDocument)
     {
         delete mDocument;
@@ -162,7 +175,7 @@ void XPDFRenderer::render(QPainter *p, int pageNumber, const QRectF &bounds)
             {
 
                 // Generate the thumbnail
-                mThumbs << *createPDFImage(pageNumber, xscale, yscale, bounds);
+                mThumbs << createPDFImage(pageNumber, xscale, yscale, bounds);
                 mThumbMap[pageNumber - 1] = true;
                 if(pageNumber == mDocument->getNumPages())
                 {
@@ -175,7 +188,7 @@ void XPDFRenderer::render(QPainter *p, int pageNumber, const QRectF &bounds)
             if(!mPagesMap[pageNumber - 1] || bZoomChanged)
             {
                 // Generate the page
-                mNumPageToPageMap[pageNumber] = *createPDFImage(pageNumber, xscale, yscale, bounds);
+                mNumPageToPageMap[pageNumber] = createPDFImage(pageNumber, xscale, yscale, bounds);
                 mPagesMap[pageNumber - 1] = true;
                 if(mPagesMap.size() == mDocument->getNumPages())
                 {
@@ -184,7 +197,7 @@ void XPDFRenderer::render(QPainter *p, int pageNumber, const QRectF &bounds)
             }
         }
 
-        QImage pdfImage;
+        QImage *pdfImage;
 
         if(!bThumbGenerated || bFirstThumbnail)
         {
@@ -197,10 +210,7 @@ void XPDFRenderer::render(QPainter *p, int pageNumber, const QRectF &bounds)
 
         QTransform savedTransform = p->worldTransform();
         p->resetTransform();
-        QTime t;
+        p->drawImage(QPointF(savedTransform.dx() + mSliceX, savedTransform.dy() + mSliceY), *pdfImage);
-        t.start();
-        p->drawImage(QPointF(savedTransform.dx() + mSliceX, savedTransform.dy() + mSliceY), pdfImage);
-        //qDebug() << "XPDFRenderer::render(...) execution time: " << t.elapsed() << "ms";
         p->setWorldTransform(savedTransform);
     }
 }
@@ -211,6 +221,8 @@ QImage* XPDFRenderer::createPDFImage(int pageNumber, const qreal xscale, const q
     if (isValid())
     {
         SplashColor paperColor = {0xFF, 0xFF, 0xFF}; // white
+        if(mSplash)
+            delete mSplash;
         mSplash = new SplashOutputDev(splashModeRGB8, 1, gFalse, paperColor);
         mSplash->startDoc(mDocument->getXRef());
         int hResolution = 72;
@@ -241,6 +253,7 @@ QImage* XPDFRenderer::createPDFImage(int pageNumber, const qreal xscale, const q
         }
 
         mpSplashBitmap = mSplash->getBitmap();
+        delete img;
         img = new QImage(mpSplashBitmap->getDataPtr(), mpSplashBitmap->getWidth(), mpSplashBitmap->getHeight(), mpSplashBitmap->getWidth() * 3, QImage::Format_RGB888);
     }
     return img;

src/pdf/XPDFRenderer.h

@@ -51,10 +51,10 @@ class XPDFRenderer : public PDFRenderer
         QImage* createPDFImage(int pageNumber, const qreal xscale = 0.5, const qreal yscale = 0.5, const QRectF &bounds = QRectF());
 
         PDFDoc *mDocument;
-        QList<QImage> mThumbs;
+        QList<QImage*> mThumbs;
         QMap<int, bool> mPagesMap;
         QMap<int, bool> mThumbMap;
-        QMap<int, QImage> mNumPageToPageMap;
+        QMap<int, QImage*> mNumPageToPageMap;
         static QAtomicInt sInstancesCount;
         qreal mSliceX;
         qreal mSliceY;