Fix crash

[lyx.git] / src / frontends / qt4 / GuiView.cpp

diff --git a/src/frontends/qt4/GuiView.cpp b/src/frontends/qt4/GuiView.cpp
index 90b43eb629ad5d0b4598ea02e99bd28d1d86dbf6..7edbcc54216ea41bd6d2ea80c9e93d8b9727a021 100644 (file)
--- a/src/frontends/qt4/GuiView.cpp
+++ b/src/frontends/qt4/GuiView.cpp
@@ -227,7 +227,7 @@ private:
        /// Current ratio between physical pixels and device-independent pixels
        double pixelRatio() const {
 #if QT_VERSION >= 0x050000
-               return devicePixelRatio();
+               return qt_scale_factor * devicePixelRatio();
 #else
                return 1.0;
 #endif
@@ -1341,7 +1341,7 @@ void GuiView::resetCommandExecute()
 double GuiView::pixelRatio() const
 {
 #if QT_VERSION >= 0x050000
-       return devicePixelRatio();
+       return qt_scale_factor * devicePixelRatio();
 #else
        return 1.0;
 #endif
@@ -1652,6 +1652,10 @@ void GuiView::updateTocItem(string const & type, DocIterator const & dit)
 
 void GuiView::structureChanged()
 {
+       // This is called from the Buffer, which has no way to ensure that cursors
+       // in BufferView remain valid.
+       if (documentBufferView())
+               documentBufferView()->cursor().fixIfBroken();
        // FIXME: This is slightly expensive, though less than the tocBackend update
        // (#9880). This also resets the view in the Toc Widget (#6675).
        d.toc_models_.reset(documentBufferView());