Initial proof of concept for pseudo layout

Fixes #3920 - hopefully properly this time...

qutebrowser/browser/webengine/webenginetab.py

@@ -1057,28 +1057,6 @@ class WebEngineTab(browsertab.AbstractTab):
     def _on_navigation_request(self, navigation):
         super()._on_navigation_request(navigation)
 
-        if qtutils.version_check('5.11.0', exact=True, compiled=False):
-            # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-68224
-            layout = self._widget.layout()
-            count = layout.count()
-            children = self._widget.findChildren(QWidget)
-            if not count and children:
-                log.webview.warning("Found children not in layout: {}, "
-                                    "focus proxy {} (QTBUG-68224)".format(
-                                        children, self._widget.focusProxy()))
-            if count > 1:
-                log.webview.debug("Found {} widgets! (QTBUG-68224)"
-                                  .format(count))
-                for i in range(count):
-                    item = layout.itemAt(i)
-                    if item is None:
-                        continue
-                    widget = item.widget()
-                    if widget is not self._widget.focusProxy():
-                        log.webview.debug("Removing widget {} (QTBUG-68224)"
-                                          .format(widget))
-                        layout.removeWidget(widget)
-
         if not navigation.accepted or not navigation.is_main_frame:
             return
 

qutebrowser/browser/webengine/webview.py

@@ -21,6 +21,7 @@
 
 import functools
 
+import sip
 from PyQt5.QtCore import pyqtSignal, pyqtSlot, QUrl, PYQT_VERSION
 from PyQt5.QtGui import QPalette
 from PyQt5.QtWebEngineWidgets import (QWebEngineView, QWebEnginePage,
@@ -30,6 +31,7 @@ from qutebrowser.browser import shared
 from qutebrowser.browser.webengine import certificateerror, webenginesettings
 from qutebrowser.config import config
 from qutebrowser.utils import log, debug, usertypes, jinja, objreg, qtutils
+from qutebrowser.misc import miscwidgets
 
 
 class WebEngineView(QWebEngineView):
@@ -51,9 +53,17 @@ class WebEngineView(QWebEngineView):
                              parent=self)
         self.setPage(page)
 
+        sip.delete(self.layout())
+        self._layout = miscwidgets.PseudoLayout(self)
+
     def shutdown(self):
         self.page().shutdown()
 
+    def resizeEvent(self, _event):
+        proxy = self.focusProxy()
+        if proxy:
+            proxy.setGeometry(self.rect())
+
     def createWindow(self, wintype):
         """Called by Qt when a page wants to create a new window.
 

qutebrowser/misc/miscwidgets.py

@@ -266,6 +266,22 @@ class WrapperLayout(QLayout):
         self._widget.deleteLater()
 
 
+class PseudoLayout(QLayout):
+
+    def addItem(self, item):
+        assert self.parent() is not None
+        item.widget().setParent(self.parent())
+
+    def removeItem(self, item):
+        item.widget().setParent(None)
+
+    def count(self):
+        return 0
+
+    def itemAt(self, _pos):
+        return None
+
+
 class FullscreenNotification(QLabel):
 
     """A label telling the user this page is now fullscreen."""