Possible fix for offscreen dialogs on windows

See https://bugreports.qt.io/browse/QTBUG-77385

src/calibre/customize/__init__.py

@@ -147,7 +147,8 @@ class Plugin(object):  # {{{
             if geom is None:
                 config_dialog.resize(config_dialog.sizeHint())
             else:
-                config_dialog.restoreGeometry(geom)
+                from PyQt5.Qt import QApplication
+                QApplication.instance().safe_restore_geometry(config_dialog, geom)
 
         button_box.accepted.connect(config_dialog.accept)
         button_box.rejected.connect(config_dialog.reject)

src/calibre/gui2/__init__.py

@@ -973,6 +973,19 @@ class Application(QApplication):
             if cft >= 0:
                 self.setCursorFlashTime(int(cft))
 
+    def safe_restore_geometry(self, widget, geom):
+        # See https://bugreports.qt.io/browse/QTBUG-77385
+        if not geom:
+            return
+        restored = widget.restoreGeometry(geom)
+        screen_rect = self.desktop().availableGeometry(widget)
+        if not widget.geometry().intersects(screen_rect):
+            w = min(widget.width(), screen_rect.width() - 10)
+            h = min(widget.height(), screen_rect.height() - 10)
+            widget.resize(w, h)
+            widget.move((screen_rect.width() - w) // 2, (screen_rect.height() - h) // 2)
+        return restored
+
     def setup_ui_font(self):
         f = QFont(QApplication.font())
         q = (f.family(), f.pointSize())

src/calibre/gui2/convert/bulk.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import shutil
 
-from PyQt5.Qt import QModelIndex, QDialog
+from PyQt5.Qt import QModelIndex, QDialog, QApplication
 
 from calibre.gui2.convert.single import Config, GroupModel, gprefs
 from calibre.gui2.convert.look_and_feel import LookAndFeelWidget
@@ -63,7 +63,7 @@ class BulkConfig(Config):
 
         geom = gprefs.get('convert_bulk_dialog_geom', None)
         if geom:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         else:
             self.resize(self.sizeHint())
 

src/calibre/gui2/convert/regex_builder.py

@@ -7,7 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import os
 
-from PyQt5.Qt import (QDialog, QWidget, QDialogButtonBox,
+from PyQt5.Qt import (QDialog, QWidget, QDialogButtonBox, QApplication,
         QBrush, QTextCursor, QTextEdit, QByteArray, Qt, pyqtSignal)
 
 from calibre.gui2.convert.regex_builder_ui import Ui_RegexBuilder
@@ -52,7 +52,7 @@ class RegexBuilder(QDialog, Ui_RegexBuilder):
         self.match_locs = []
         geom = gprefs.get('regex_builder_geometry', None)
         if geom is not None:
-            self.restoreGeometry(QByteArray(geom))
+            QApplication.instance().safe_restore_geometry(self, QByteArray(geom))
         self.finished.connect(self.save_state)
 
     def save_state(self, result):

src/calibre/gui2/convert/single.py

@@ -10,7 +10,7 @@ from PyQt5.Qt import (
     QAbstractListModel, QCheckBox, QComboBox, QCoreApplication, QDialog,
     QDialogButtonBox, QFont, QFrame, QGridLayout, QHBoxLayout, QIcon, QLabel,
     QListView, QModelIndex, QScrollArea, QSize, QSizePolicy, QSpacerItem,
-    Qt, QTextEdit, QWidget
+    Qt, QTextEdit, QWidget, QApplication
 )
 
 from calibre.customize.conversion import OptionRecommendation
@@ -94,7 +94,7 @@ class Config(QDialog):
         self.groups.setMouseTracking(True)
         geom = gprefs.get('convert_single_dialog_geom', None)
         if geom:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         else:
             self.resize(self.sizeHint())
 

src/calibre/gui2/cover_flow.py

@@ -12,7 +12,7 @@ Module to implement the Cover Flow feature
 import sys, os, time
 
 from PyQt5.Qt import (QImage, QSizePolicy, QTimer, QDialog, Qt, QSize, QAction,
-        QStackedLayout, QLabel, pyqtSignal, QKeySequence, QFont)
+        QStackedLayout, QLabel, pyqtSignal, QKeySequence, QFont, QApplication)
 
 from calibre import plugins
 from calibre.ebooks.metadata import rating_to_stars
@@ -243,7 +243,7 @@ class CBDialog(QDialog):
         self.layout().addWidget(cover_flow)
 
         geom = gprefs.get('cover_browser_dialog_geometry', None)
-        if not geom or not self.restoreGeometry(geom):
+        if not geom or not QApplication.instance().safe_restore_geometry(self, geom):
             h, w = available_height()-60, int(available_width()/1.5)
             self.resize(w, h)
         self.action_fs_toggle = a = QAction(self)
@@ -279,7 +279,7 @@ class CBDialog(QDialog):
     def show_normal(self):
         self.showNormal()
         if self.pre_fs_geom is not None:
-            self.restoreGeometry(self.pre_fs_geom)
+            QApplication.instance().safe_restore_geometry(self, self.pre_fs_geom)
             self.pre_fs_geom = None
 
     def show_fullscreen(self):
@@ -454,7 +454,7 @@ class CoverFlowMixin(object):
 
 
 def test():
-    from PyQt5.Qt import QApplication, QMainWindow
+    from PyQt5.Qt import QMainWindow
     app = QApplication([])
     w = QMainWindow()
     cf = CoverFlow()
@@ -475,7 +475,7 @@ def main(args=sys.argv):
 
 
 if __name__ == '__main__':
-    from PyQt5.Qt import QApplication, QMainWindow
+    from PyQt5.Qt import QMainWindow
     app = QApplication([])
     w = QMainWindow()
     cf = CoverFlow()

src/calibre/gui2/covers.py

@@ -10,7 +10,7 @@ from collections import OrderedDict
 from PyQt5.Qt import (
     QWidget, QHBoxLayout, QTabWidget, QLabel, QSizePolicy, QSize, QFormLayout,
     QSpinBox, pyqtSignal, QPixmap, QDialog, QVBoxLayout, QDialogButtonBox,
-    QListWidget, QListWidgetItem, Qt, QGridLayout, QPushButton, QIcon,
+    QListWidget, QListWidgetItem, Qt, QGridLayout, QPushButton, QIcon, QApplication,
     QColorDialog, QToolButton, QLineEdit, QColor, QFrame, QTimer, QCheckBox)
 
 from calibre.ebooks.covers import all_styles, cprefs, generate_cover, override_prefs, default_color_themes
@@ -530,7 +530,7 @@ class CoverSettingsDialog(QDialog):
         self.resize(self.sizeHint())
         geom = gprefs.get('cover_settings_dialog_geom', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         self.prefs_for_rendering = None
 
     def restore_defaults(self):

src/calibre/gui2/dialogs/authors_edit.py

@@ -159,7 +159,7 @@ class AuthorsEdit(QDialog):
         self.resize(self.sizeHint() + QSize(150, 100))
         geom = gprefs.get('authors-edit-geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         self.author.setFocus(Qt.OtherFocusReason)
 
     def save_geometry(self):

src/calibre/gui2/dialogs/book_info.py

@@ -8,7 +8,7 @@ from PyQt5.Qt import (
     QBrush, QCheckBox, QCoreApplication, QDialog, QGridLayout, QHBoxLayout, QIcon,
     QKeySequence, QLabel, QListView, QModelIndex, QPalette, QPixmap, QPushButton,
     QShortcut, QSize, QSplitter, Qt, QTimer, QToolButton, QVBoxLayout, QWidget,
-    pyqtSignal
+    pyqtSignal, QApplication
 )
 
 from calibre import fit_image
@@ -192,7 +192,7 @@ class BookInfo(QDialog):
         saved_layout = gprefs.get('book_info_dialog_layout', None)
         if saved_layout is not None:
             try:
-                self.restoreGeometry(saved_layout[0])
+                QApplication.instance().safe_restore_geometry(self, saved_layout[0])
                 self.splitter.restoreState(saved_layout[1])
             except Exception:
                 pass

src/calibre/gui2/dialogs/catalog.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import os, sys, importlib, weakref
 
-from PyQt5.Qt import QDialog, QCoreApplication, QSize, QScrollArea
+from PyQt5.Qt import QDialog, QCoreApplication, QSize, QScrollArea, QApplication
 
 from calibre.customize.ui import config
 from calibre.gui2.dialogs.catalog_ui import Ui_Dialog
@@ -130,7 +130,7 @@ class Catalog(QDialog, Ui_Dialog):
 
         geom = dynamic.get('catalog_window_geom', None)
         if geom is not None:
-            self.restoreGeometry(bytes(geom))
+            QApplication.instance().safe_restore_geometry(self, bytes(geom))
         else:
             self.resize(self.sizeHint())
         d = QCoreApplication.instance().desktop()

src/calibre/gui2/dialogs/comments_dialog.py

@@ -5,7 +5,7 @@ __copyright__ = '2008, Kovid Goyal kovid@kovidgoyal.net'
 __docformat__ = 'restructuredtext en'
 __license__   = 'GPL v3'
 
-from PyQt5.Qt import Qt, QDialog, QDialogButtonBox, QVBoxLayout, QPlainTextEdit, QSize
+from PyQt5.Qt import Qt, QDialog, QDialogButtonBox, QVBoxLayout, QPlainTextEdit, QSize, QApplication
 
 from calibre.gui2 import gprefs, Application
 from calibre.gui2.dialogs.comments_dialog_ui import Ui_CommentsDialog
@@ -35,7 +35,7 @@ class CommentsDialog(QDialog, Ui_CommentsDialog):
 
         geom = gprefs.get('comments_dialog_geom', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
     def save_geometry(self):
         gprefs.set('comments_dialog_geom', bytearray(self.saveGeometry()))

src/calibre/gui2/dialogs/duplicates.py

@@ -63,7 +63,7 @@ class DuplicatesQuestion(QDialog):
         self.resize(self.sizeHint())
         geom = gprefs.get('duplicates-question-dialog-geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         self.exec_()
 
     def copy_to_clipboard(self):

src/calibre/gui2/dialogs/edit_authors_dialog.py

@@ -41,7 +41,7 @@ class EditAuthorsDialog(QDialog, Ui_EditAuthorsDialog):
                         gprefs.get('manage_authors_table_widths', None)
             geom = gprefs.get('manage_authors_dialog_geometry', None)
             if geom:
-                self.restoreGeometry(QByteArray(geom))
+                QApplication.instance().safe_restore_geometry(self, QByteArray(geom))
         except Exception:
             pass
 

src/calibre/gui2/dialogs/match_books.py

@@ -60,7 +60,7 @@ class MatchBooks(QDialog, Ui_MatchBooks):
                         gprefs.get('match_books_dialog_books_table_widths', None)
             geom = gprefs.get('match_books_dialog_geometry', None)
             if geom:
-                self.restoreGeometry(QByteArray(geom))
+                QApplication.instance().safe_restore_geometry(self, QByteArray(geom))
         except:
             pass
 

src/calibre/gui2/dialogs/message_box.py

@@ -217,7 +217,7 @@ class ViewLog(QDialog):  # {{{
         self.resize(QSize(700, 500))
         geom = gprefs.get(self.unique_name, None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
         self.setModal(False)
         self.setWindowTitle(title)

src/calibre/gui2/dialogs/metadata_bulk.py

@@ -552,7 +552,7 @@ class MetadataBulkDialog(QDialog, Ui_MetadataBulkDialog):
         self.central_widget.setCurrentIndex(tab)
         geom = gprefs.get('bulk_metadata_window_geometry', None)
         if geom is not None:
-            self.restoreGeometry(bytes(geom))
+            QApplication.instance().safe_restore_geometry(self, bytes(geom))
         else:
             self.resize(self.sizeHint())
         ct = gprefs.get('bulk_metadata_window_tab', 0)

src/calibre/gui2/dialogs/plugin_updater.py

@@ -10,7 +10,7 @@ import re, datetime, traceback
 from lxml import html
 from PyQt5.Qt import (Qt, QUrl, QFrame, QVBoxLayout, QLabel, QBrush, QTextEdit,
                       QComboBox, QAbstractItemView, QHBoxLayout, QDialogButtonBox,
-                      QAbstractTableModel, QTableView, QModelIndex,
+                      QAbstractTableModel, QTableView, QModelIndex, QApplication,
                       QSortFilterProxyModel, QAction, QIcon, QDialog,
                       QFont, QPixmap, QSize, QLineEdit)
 
@@ -156,7 +156,7 @@ class SizePersistedDialog(QDialog):
         if self.geom is None:
             self.resize(self.sizeHint()+self.initial_extra_size)
         else:
-            self.restoreGeometry(self.geom)
+            QApplication.instance().safe_restore_geometry(self, self.geom)
 
     def dialog_closing(self, result):
         geom = bytearray(self.saveGeometry())

src/calibre/gui2/dialogs/quickview.py

@@ -157,7 +157,7 @@ class Quickview(QDialog, Ui_Quickview):
             if not self.is_pane:
                 geom = gprefs.get('quickview_dialog_geometry', None)
                 if geom:
-                    self.restoreGeometry(QByteArray(geom))
+                    QApplication.instance().safe_restore_geometry(self, QByteArray(geom))
         except:
             pass
 

src/calibre/gui2/dialogs/scheduler.py

@@ -13,7 +13,7 @@ import calendar, textwrap
 from collections import OrderedDict
 
 from PyQt5.Qt import (
-    QDialog, Qt, QTime, QObject, QMenu, QHBoxLayout, QAction, QIcon, QMutex,
+    QDialog, Qt, QTime, QObject, QMenu, QHBoxLayout, QAction, QIcon, QMutex, QApplication,
     QTimer, pyqtSignal, QWidget, QGridLayout, QCheckBox, QTimeEdit, QLabel,
     QLineEdit, QDoubleSpinBox, QSize, QTreeView, QSizePolicy, QToolButton,
     QScrollArea, QFrame, QVBoxLayout, QTabWidget, QSpacerItem, QGroupBox,
@@ -373,7 +373,7 @@ class SchedulerDialog(QDialog):
 
         geom = gprefs.get('scheduler_dialog_geometry')
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
     def sizeHint(self):
         return QSize(800, 600)
@@ -729,7 +729,6 @@ class Scheduler(QObject):
 
 
 if __name__ == '__main__':
-    from PyQt5.Qt import QApplication
     app = QApplication([])
     d = SchedulerDialog(RecipeModel())
     d.exec_()

src/calibre/gui2/dialogs/tag_editor.py

@@ -3,7 +3,7 @@ from __future__ import absolute_import, division, print_function, unicode_litera
 __license__   = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
 
-from PyQt5.Qt import Qt, QDialog, QAbstractItemView
+from PyQt5.Qt import Qt, QDialog, QAbstractItemView, QApplication
 
 from calibre.gui2.dialogs.tag_editor_ui import Ui_TagEditor
 from calibre.gui2 import question_dialog, error_dialog, gprefs
@@ -92,7 +92,7 @@ class TagEditor(QDialog, Ui_TagEditor):
 
         geom = gprefs.get('tag_editor_geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
     def edit_box_changed(self, which):
         gprefs['tag_editor_last_filter'] = which

src/calibre/gui2/dialogs/tag_list_editor.py

@@ -4,7 +4,7 @@
 from __future__ import absolute_import, division, print_function, unicode_literals
 
 from PyQt5.Qt import (Qt, QDialog, QTableWidgetItem, QIcon, QByteArray, QSize,
-                      QDialogButtonBox, QTableWidget, QItemDelegate)
+                      QDialogButtonBox, QTableWidget, QItemDelegate, QApplication)
 
 from calibre.gui2.dialogs.tag_list_editor_ui import Ui_TagListEditor
 from calibre.gui2.dialogs.confirm_delete import confirm
@@ -169,7 +169,7 @@ class TagListEditor(QDialog, Ui_TagListEditor):
         try:
             geom = gprefs.get('tag_list_editor_dialog_geometry', None)
             if geom is not None:
-                self.restoreGeometry(QByteArray(geom))
+                QApplication.instance().safe_restore_geometry(self, QByteArray(geom))
             else:
                 self.resize(self.sizeHint()+QSize(150, 100))
         except:

src/calibre/gui2/dialogs/trim_image.py

@@ -62,7 +62,7 @@ class TrimImage(QDialog):
         self.resize(QSize(900, 600))
         geom = gprefs.get('image-trim-dialog-geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         self.setWindowIcon(self.trim_action.icon())
         self.image_data = None
 

src/calibre/gui2/image_popup.py

@@ -164,7 +164,7 @@ class ImageView(QDialog):
         self.resize(QSize(int(geom.width()/2.5), geom.height()-50))
         geom = gprefs.get(self.geom_name, None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         try:
             self.current_image_name = unicode_type(self.current_url.toString(NO_URL_FORMATTING)).rpartition('/')[-1]
         except AttributeError:

src/calibre/gui2/jobs.py

@@ -645,7 +645,7 @@ class JobsDialog(QDialog, Ui_JobsDialog):
         try:
             geom = gprefs.get('jobs_dialog_geometry', None)
             if geom:
-                self.restoreGeometry(QByteArray(geom))
+                QApplication.instance().safe_restore_geometry(self, QByteArray(geom))
             state = gprefs.get('jobs view column layout3', None)
             if state is not None:
                 self.jobs_view.horizontalHeader().restoreState(QByteArray(state))

src/calibre/gui2/metadata/diff.py

@@ -608,7 +608,7 @@ class CompareMany(QDialog):
         self.resize(QSize(width, height))
         geom = gprefs.get('diff_dialog_geom', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         b.setFocus(Qt.OtherFocusReason)
         self.next_called = False
 

src/calibre/gui2/metadata/single.py

@@ -10,7 +10,7 @@ import os, errno
 from datetime import datetime
 from functools import partial
 
-from PyQt5.Qt import (Qt, QVBoxLayout, QHBoxLayout, QWidget, QPushButton,
+from PyQt5.Qt import (Qt, QVBoxLayout, QHBoxLayout, QWidget, QPushButton, QApplication,
         QGridLayout, pyqtSignal, QDialogButtonBox, QScrollArea, QFont, QCoreApplication,
         QTabWidget, QIcon, QToolButton, QSplitter, QGroupBox, QSpacerItem, QInputDialog,
         QSizePolicy, QFrame, QSize, QKeySequence, QMenu, QShortcut, QDialog)
@@ -120,7 +120,7 @@ class MetadataSingleDialogBase(QDialog):
         self.do_layout()
         geom = gprefs.get('metasingle_window_geometry3', None)
         if geom is not None:
-            self.restoreGeometry(bytes(geom))
+            QApplication.instance().safe_restore_geometry(self, bytes(geom))
         else:
             self.resize(self.sizeHint())
         self.restore_widget_settings()
@@ -1219,8 +1219,8 @@ def edit_metadata(db, row_list, current_row, parent=None, view_slot=None, edit_s
 
 
 if __name__ == '__main__':
-    from calibre.gui2 import Application as QApplication
+    from calibre.gui2 import Application
-    app = QApplication([])
+    app = Application([])
     from calibre.library import db
     db = db()
     row_list = list(range(len(db.data)))

src/calibre/gui2/metadata/single_download.py

@@ -1066,7 +1066,7 @@ class FullFetch(QDialog):  # {{{
         self.resize(850, 600)
         geom = gprefs.get('metadata_single_gui_geom', None)
         if geom is not None and geom:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
         self.finished.connect(self.cleanup)
 
@@ -1168,7 +1168,7 @@ class CoverFetch(QDialog):  # {{{
 
         geom = gprefs.get('single-cover-fetch-dialog-geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
     def cleanup(self):
         self.covers_widget.cleanup()

src/calibre/gui2/preferences/__init__.py

@@ -8,7 +8,7 @@ __docformat__ = 'restructuredtext en'
 
 import textwrap
 
-from PyQt5.Qt import (QWidget, pyqtSignal, QCheckBox, QAbstractSpinBox,
+from PyQt5.Qt import (QWidget, pyqtSignal, QCheckBox, QAbstractSpinBox, QApplication,
     QLineEdit, QComboBox, Qt, QIcon, QDialog, QVBoxLayout,
     QDialogButtonBox)
 
@@ -382,7 +382,7 @@ def show_config_widget(category, name, gui=None, show_restart_msg=False,
     w.genesis(gui)
     w.initialize()
     if geom is not None:
-        d.restoreGeometry(geom)
+        QApplication.instance().safe_restore_geometry(d, geom)
     d.exec_()
     geom = bytearray(d.saveGeometry())
     gprefs[conf_name] = geom

src/calibre/gui2/preferences/main.py

@@ -224,7 +224,7 @@ class Preferences(QDialog):
 
         geom = gprefs.get('preferences dialog geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
         # Center
         if islinux:

src/calibre/gui2/store/search/search.py

@@ -10,7 +10,7 @@ import re
 from random import shuffle
 
 from PyQt5.Qt import (Qt, QDialog, QDialogButtonBox, QTimer, QCheckBox, QLabel,
-                      QVBoxLayout, QIcon, QWidget, QTabWidget, QGridLayout)
+                      QVBoxLayout, QIcon, QWidget, QTabWidget, QGridLayout, QApplication)
 
 from calibre.gui2 import JSONConfig, info_dialog, error_dialog
 from calibre.gui2.dialogs.choose_format import ChooseFormatDialog
@@ -264,7 +264,7 @@ class SearchDialog(QDialog, Ui_Dialog):
     def restore_state(self):
         geometry = self.config.get('geometry', None)
         if geometry:
-            self.restoreGeometry(geometry)
+            QApplication.instance().safe_restore_geometry(self, geometry)
 
         splitter_state = self.config.get('store_splitter_state', None)
         if splitter_state:
@@ -333,7 +333,7 @@ class SearchDialog(QDialog, Ui_Dialog):
         # Restore dialog state.
         geometry = self.config.get('config_dialog_geometry', None)
         if geometry:
-            d.restoreGeometry(geometry)
+            QApplication.instance().safe_restore_geometry(d, geometry)
         else:
             d.resize(800, 600)
         tab_index = self.config.get('config_dialog_tab_index', 0)

src/calibre/gui2/store/stores/mobileread/store_dialog.py

@@ -7,7 +7,7 @@ __copyright__ = '2011, John Schember <john@nachtimwald.com>'
 __docformat__ = 'restructuredtext en'
 
 
-from PyQt5.Qt import (Qt, QDialog, QIcon, QComboBox)
+from PyQt5.Qt import (Qt, QDialog, QIcon, QComboBox, QApplication)
 
 from calibre.gui2.store.stores.mobileread.adv_search_builder import AdvSearchBuilderDialog
 from calibre.gui2.store.stores.mobileread.models import BooksModel
@@ -58,7 +58,7 @@ class MobileReadStoreDialog(QDialog, Ui_Dialog):
     def restore_state(self):
         geometry = self.plugin.config.get('dialog_geometry', None)
         if geometry:
-            self.restoreGeometry(geometry)
+            QApplication.instance().safe_restore_geometry(self, geometry)
 
         results_cwidth = self.plugin.config.get('dialog_results_view_column_width')
         if results_cwidth:

src/calibre/gui2/store/web_store.py

@@ -10,7 +10,7 @@ import shutil
 
 from PyQt5.Qt import (
     QHBoxLayout, QIcon, QLabel, QProgressBar, QPushButton, QSize, QUrl, QVBoxLayout,
-    QWidget, pyqtSignal
+    QWidget, pyqtSignal, QApplication
 )
 from PyQt5.QtWebEngineWidgets import QWebEngineProfile, QWebEngineView
 
@@ -140,7 +140,7 @@ class Main(MainWindow):
         self.setCentralWidget(c)
         geometry = gprefs.get('store_dialog_main_window_geometry')
         if geometry is not None:
-            self.restoreGeometry(geometry)
+            QApplication.instance().safe_restore_geometry(self, geometry)
         self.go_to(data['detail_url'] or None)
 
     def sizeHint(self):

src/calibre/gui2/toc/main.py

@@ -11,7 +11,7 @@ from functools import partial
 from threading import Thread
 
 from PyQt5.Qt import (
-    QCheckBox, QCursor, QDialog, QDialogButtonBox, QFrame, QGridLayout, QIcon,
+    QCheckBox, QCursor, QDialog, QDialogButtonBox, QFrame, QGridLayout, QIcon, QApplication,
     QInputDialog, QItemSelectionModel, QKeySequence, QLabel, QMenu, QPushButton,
     QSize, QSizePolicy, QStackedWidget, Qt, QToolButton, QTreeWidget,
     QTreeWidgetItem, QVBoxLayout, QWidget, pyqtSignal
@@ -1031,7 +1031,7 @@ class TOCEditor(QDialog):  # {{{
         self.resize(950, 630)
         geom = self.prefs.get('toc_editor_window_geom', None)
         if geom is not None:
-            self.restoreGeometry(bytes(geom))
+            QApplication.instance().safe_restore_geometry(self, bytes(geom))
         self.stacks.currentChanged.connect(self.update_history_buttons)
         self.update_history_buttons()
 

src/calibre/gui2/tweak_book/preferences.py

@@ -17,7 +17,7 @@ from copy import copy, deepcopy
 from PyQt5.Qt import (
     QDialog, QGridLayout, QStackedWidget, QDialogButtonBox, QListWidget,
     QListWidgetItem, QIcon, QWidget, QSize, QFormLayout, Qt, QSpinBox,
-    QCheckBox, pyqtSignal, QDoubleSpinBox, QComboBox, QLabel, QFont,
+    QCheckBox, pyqtSignal, QDoubleSpinBox, QComboBox, QLabel, QFont, QApplication,
     QFontComboBox, QPushButton, QSizePolicy, QHBoxLayout, QGroupBox,
     QToolButton, QVBoxLayout, QSpacerItem, QTimer)
 from PyQt5.QtWebEngineWidgets import QWebEngineSettings
@@ -710,7 +710,7 @@ class Preferences(QDialog):
         self.resize(800, 600)
         geom = tprefs.get('preferences_geom', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
 
         self.keyboard_panel = ShortcutConfig(self)
         self.keyboard_panel.initialize(gui.keyboard)

src/calibre/gui2/tweak_book/toc.py

@@ -56,7 +56,7 @@ class TOCEditor(QDialog):
         self.resize(950, 630)
         geom = tprefs.get('toc_editor_window_geom', None)
         if geom is not None:
-            self.restoreGeometry(bytes(geom))
+            QApplication.instance().safe_restore_geometry(self, bytes(geom))
 
     def add_new_item(self, item, where):
         self.item_edit(item, where)

src/calibre/gui2/tweak_book/ui.py

@@ -800,7 +800,7 @@ class Main(MainWindow):
     def restore_state(self):
         geom = tprefs.get('main_window_geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         state = tprefs.get('main_window_state', None)
         if state is not None:
             self.restoreState(state, self.STATE_VERSION)

src/calibre/gui2/ui.py

@@ -911,7 +911,7 @@ class Main(MainWindow, MainWindowMixin, DeviceMixin, EmailMixin,  # {{{
     def read_settings(self):
         geometry = config['main_window_geometry']
         if geometry is not None:
-            self.restoreGeometry(geometry)
+            QApplication.instance().safe_restore_geometry(self, geometry)
         self.read_layout_settings()
 
     def write_settings(self):

src/calibre/gui2/viewer/ui.py

@@ -509,7 +509,7 @@ class EbookViewer(MainWindow):
         state = vprefs['main_window_state']
         geom = vprefs['main_window_geometry']
         if geom and get_session_pref('remember_window_geometry', default=False):
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         if state:
             self.restoreState(state, self.MAIN_WINDOW_STATE_VERSION)
             self.inspector_dock.setVisible(False)

src/calibre/gui2/widgets2.py

@@ -174,7 +174,7 @@ class Dialog(QDialog):
         self.resize(self.sizeHint())
         geom = self.prefs_for_persistence.get(name + '-geometry', None)
         if geom is not None:
-            self.restoreGeometry(geom)
+            QApplication.instance().safe_restore_geometry(self, geom)
         if hasattr(self, 'splitter'):
             state = self.prefs_for_persistence.get(name + '-splitter-state', None)
             if state is not None: