pdfviewer: Fix zooming of content

Clear the page cache after zoom level has changed, otherwise
the page content won't be rerendered with new zoom level.

Change-Id: If374d65570c0ecce3a94d496d57a8e28dcbf8e0a
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

1 files changed, 1 insertions, 0 deletions

diff --git a/examples/widgets/pdfviewer/sequentialpagewidget.cpp b/examples/widgets/pdfviewer/sequentialpagewidget.cpp
index 4107b86..229ba61 100644
--- a/examples/widgets/pdfviewer/sequentialpagewidget.cpp
+++ b/examples/widgets/pdfviewer/sequentialpagewidget.cpp
@@ -86,6 +86,7 @@ void SequentialPageWidget::invalidate()
     setMinimumSize(m_totalSize);
     emit zoomChanged(m_zoom);
     qCDebug(lcExample) << "total size" << m_totalSize;
+    m_pageCache.clear();
     update();
 }