Using no deprecated enum Qt::MiddleButton

ui/pageview.cpp

@@ -1847,7 +1847,7 @@ void PageView::keyPressEvent(QKeyEvent *e)
     e->accept();
 
     // if performing a selection or dyn zooming, disable keys handling
-    if ((d->mouseSelecting && e->key() != Qt::Key_Escape) || (QApplication::mouseButtons() & Qt::MidButton))
+    if ((d->mouseSelecting && e->key() != Qt::Key_Escape) || (QApplication::mouseButtons() & Qt::MiddleButton))
         return;
 
     // move/scroll page by using keys
@@ -1995,7 +1995,7 @@ void PageView::mouseMoveEvent(QMouseEvent *e)
         return;
 
     // if holding mouse mid button, perform zoom
-    if (e->buttons() & Qt::MidButton) {
+    if (e->buttons() & Qt::MiddleButton) {
         int mouseY = e->globalPos().y();
         int deltaY = d->mouseMidLastY - mouseY;
 
@@ -2139,7 +2139,7 @@ void PageView::mousePressEvent(QMouseEvent *e)
         return;
 
     // if performing a selection or dyn zooming, disable mouse press
-    if (d->mouseSelecting || (e->button() != Qt::MidButton && (e->buttons() & Qt::MidButton)))
+    if (d->mouseSelecting || (e->button() != Qt::MiddleButton && (e->buttons() & Qt::MiddleButton)))
         return;
 
     // if the page is scrolling, stop it
@@ -2149,7 +2149,7 @@ void PageView::mousePressEvent(QMouseEvent *e)
     }
 
     // if pressing mid mouse button while not doing other things, begin 'continuous zoom' mode
-    if (e->button() == Qt::MidButton) {
+    if (e->button() == Qt::MiddleButton) {
         d->mouseMidLastY = e->globalPos().y();
         setCursor(Qt::SizeVerCursor);
         return;
@@ -2362,7 +2362,7 @@ void PageView::mouseReleaseEvent(QMouseEvent *e)
     const QPoint eventPos = contentAreaPoint(e->pos());
 
     // handle mode independent mid bottom zoom
-    if (e->button() == Qt::MidButton) {
+    if (e->button() == Qt::MiddleButton) {
         // request pixmaps since it was disabled during drag
         slotRequestVisiblePixmaps();
         // the cursor may now be over a link.. update it