Make ESC key leave fullscreen

BUG: 366276, 417337, 269677

part/annotwindow.cpp

@@ -295,7 +295,7 @@ bool AnnotWindow::eventFilter(QObject *o, QEvent *e)
     if (e->type() == QEvent::ShortcutOverride) {
         QKeyEvent *keyEvent = static_cast<QKeyEvent *>(e);
         if (keyEvent->key() == Qt::Key_Escape) {
-            close();
+            e->accept();
             return true;
         }
     } else if (e->type() == QEvent::KeyPress) {
@@ -306,6 +306,9 @@ bool AnnotWindow::eventFilter(QObject *o, QEvent *e)
         } else if (keyEvent == QKeySequence::Redo) {
             m_document->redo();
             return true;
+        } else if (keyEvent->key() == Qt::Key_Escape) {
+            close();
+            return true;
         }
     } else if (e->type() == QEvent::FocusIn) {
         raise();

part/pageview.cpp

@@ -1972,7 +1972,12 @@ void PageView::resizeEvent(QResizeEvent *e)
 
 void PageView::keyPressEvent(QKeyEvent *e)
 {
-    e->accept();
+    // Ignore ESC key press to send to shell.cpp
+    if (e->key() != Qt::Key_Escape) {
+        e->accept();
+    } else {
+        e->ignore();
+    }
 
     // if performing a selection or dyn zooming, disable keys handling
     if ((d->mouseSelecting && e->key() != Qt::Key_Escape) || (QApplication::mouseButtons() & Qt::MiddleButton))

shell/shell.cpp

@@ -160,6 +160,13 @@ void Shell::reloadAllXML()
     }
 }
 
+void Shell::keyPressEvent(QKeyEvent *e)
+{
+    if (e->key() == Qt::Key_Escape && window()->isFullScreen()) {
+        setFullScreen(false);
+    }
+}
+
 bool Shell::eventFilter(QObject *obj, QEvent *event)
 {
     QDragMoveEvent *dmEvent = dynamic_cast<QDragMoveEvent *>(event);

shell/shell.h

@@ -114,6 +114,7 @@ protected:
     bool queryClose() override;
 
     void showEvent(QShowEvent *event) override;
+    void keyPressEvent(QKeyEvent *) override;
 
 private Q_SLOTS:
     void fileOpen();