Make sure that newly created BackingStores respect the size of the view.

2 files changed, 6 insertions, 3 deletions

diff --git a/lib/backing_store_qt.cpp b/lib/backing_store_qt.cpp
index b22f25671..e5cc72016 100644
--- a/lib/backing_store_qt.cpp
+++ b/lib/backing_store_qt.cpp
@@ -26,9 +26,10 @@ BackingStoreQt::~BackingStoreQt()
 void BackingStoreQt::resize(const QSize& size)
 {
     m_isValid = false;
-    if (size != m_pixelBuffer.size())
-    m_pixelBuffer = QPixmap(size);
-    m_host->WasResized();
+    if (size != m_pixelBuffer.size()) {
+        m_pixelBuffer = QPixmap(size);
+        m_host->WasResized();
+    }
 }
 
 void BackingStoreQt::paintToTarget(QPainter* painter, const QRect& rect)
diff --git a/lib/raster_window.cpp b/lib/raster_window.cpp
index 0f3070e5d..cd5d038b0 100644
--- a/lib/raster_window.cpp
+++ b/lib/raster_window.cpp
@@ -18,6 +18,8 @@ RasterWindow::RasterWindow(content::RenderWidgetHostViewQt* view, QWidget *paren
 void RasterWindow::setBackingStore(BackingStoreQt* backingStore)
 {
     m_backingStore = backingStore;
+    if (m_backingStore)
+        m_backingStore->resize(size());
 }
 
 void RasterWindow::paintEvent(QPaintEvent * event)