use QPainter::setClipRect

src/chatlog/content/image.cpp

@@ -37,6 +37,8 @@ qreal Image::getAscent() const
 
 void Image::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 {
+    painter->setClipRect(boundingRect());
+
     painter->setRenderHint(QPainter::SmoothPixmapTransform);
     painter->translate(-size.width() / 2.0, -size.height() / 2.0);
     painter->drawPixmap(0, 0, pmap);

src/chatlog/content/notificationicon.cpp

@@ -42,6 +42,8 @@ QRectF NotificationIcon::boundingRect() const
 
 void NotificationIcon::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
 {
+    painter->setClipRect(boundingRect());
+
     painter->setRenderHint(QPainter::SmoothPixmapTransform);
     painter->translate(-size.width() / 2.0, -size.height() / 2.0);
 

src/chatlog/content/spinner.cpp

@@ -40,6 +40,8 @@ QRectF Spinner::boundingRect() const
 
 void Spinner::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
 {
+    painter->setClipRect(boundingRect());
+
     QTransform rotMat;
     rotMat.translate(size.width() / 2.0, size.height() / 2.0);
     rotMat.rotate(rot);

src/chatlog/content/text.cpp

@@ -155,6 +155,8 @@ void Text::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWid
 {
     if(doc)
     {
+        painter->setClipRect(boundingRect());
+
         // draw selection
         QAbstractTextDocumentLayout::PaintContext ctx;
         QAbstractTextDocumentLayout::Selection sel;