Fix a regression in the previous release that broke touch screen interaction

src/calibre/gui2/gestures.py

@@ -34,18 +34,18 @@ class TouchPoint:
 
     def __init__(self, tp):
         self.creation_time = self.last_update_time = self.time_of_last_move = monotonic()
-        self.start_screen_position = self.current_screen_position = self.previous_screen_position = QPointF(tp.screenPos())
+        self.start_screen_position = self.current_screen_position = self.previous_screen_position = QPointF(tp.globalPosition())
         self.time_since_last_update = -1
         self.total_movement = 0
-        self.start_position = self.current_position = tp.pos()
+        self.start_position = self.current_position = tp.position()
         self.extra_data = None
 
     def update(self, tp):
-        self.current_position = tp.pos()
+        self.current_position = tp.position()
         now = monotonic()
         self.time_since_last_update = now - self.last_update_time
         self.last_update_time = now
-        self.previous_screen_position, self.current_screen_position = self.current_screen_position, QPointF(tp.screenPos())
+        self.previous_screen_position, self.current_screen_position = self.current_screen_position, QPointF(tp.globalPosition())
         movement = (self.current_screen_position - self.previous_screen_position).manhattanLength()
         self.total_movement += movement
         if movement > 5:
@@ -81,7 +81,7 @@ class State(QObject):
         if boundary == 'start':
             self.start()
 
-        for tp in ev.touchPoints():
+        for tp in ev.points():
             tpid = tp.id()
             if tpid not in self.touch_points:
                 self.touch_points[tpid] = TouchPoint(tp)

src/calibre/gui2/library/alternate_views.py

@@ -734,13 +734,11 @@ class GridView(QListView):
         t.timeout.connect(self.update_memory_cover_cache_size)
 
     def viewportEvent(self, ev):
-        try:
+        if hasattr(self, 'gesture_manager'):
             ret = self.gesture_manager.handle_event(ev)
-        except AttributeError:
-            ret = None
-        if ret is not None:
-            return ret
-        return QListView.viewportEvent(self, ev)
+            if ret is not None:
+                return ret
+        return super().viewportEvent(ev)
 
     @property
     def device_pixel_ratio(self):

src/calibre/gui2/library/views.py

@@ -215,13 +215,11 @@ class BooksView(QTableView):  # {{{
     def viewportEvent(self, event):
         if (event.type() == QEvent.Type.ToolTip and not gprefs['book_list_tooltips']):
             return False
-        try:
+        if hasattr(self, 'gesture_manager'):
             ret = self.gesture_manager.handle_event(event)
-        except AttributeError:
-            ret = None
-        if ret is not None:
-            return ret
-        return QTableView.viewportEvent(self, event)
+            if ret is not None:
+                return ret
+        return super().viewportEvent(event)
 
     def __init__(self, parent, modelcls=BooksModel, use_edit_metadata_dialog=True):
         QTableView.__init__(self, parent)

src/calibre/gui2/viewer/bookmarks.py

@@ -37,12 +37,10 @@ class BookmarksList(QListWidget):
         self.setVerticalScrollMode(QAbstractItemView.ScrollMode.ScrollPerPixel)
 
     def viewportEvent(self, ev):
-        try:
+        if hasattr(self, 'gesture_manager'):
             ret = self.gesture_manager.handle_event(ev)
-        except AttributeError:
-            ret = None
-        if ret is not None:
-            return ret
+            if ret is not None:
+                return ret
         return super().viewportEvent(ev)
 
     @property

src/calibre/gui2/viewer/highlights.py

@@ -180,12 +180,10 @@ class Highlights(QTreeWidget):
         self.setVerticalScrollMode(QAbstractItemView.ScrollMode.ScrollPerPixel)
 
     def viewportEvent(self, ev):
-        try:
+        if hasattr(self, 'gesture_manager'):
             ret = self.gesture_manager.handle_event(ev)
-        except AttributeError:
-            ret = None
-        if ret is not None:
-            return ret
+            if ret is not None:
+                return ret
         return super().viewportEvent(ev)
 
     def show_context_menu(self, point):

src/calibre/gui2/viewer/search.py

@@ -497,12 +497,10 @@ class Results(QTreeWidget):  # {{{
         self.setVerticalScrollMode(QAbstractItemView.ScrollMode.ScrollPerPixel)
 
     def viewportEvent(self, ev):
-        try:
+        if hasattr(self, 'gesture_manager'):
             ret = self.gesture_manager.handle_event(ev)
-        except AttributeError:
-            ret = None
-        if ret is not None:
-            return ret
+            if ret is not None:
+                return ret
         return super().viewportEvent(ev)
 
     def current_item_changed(self, current, previous):

src/calibre/gui2/viewer/toc.py

@@ -53,12 +53,10 @@ class TOCView(QTreeView):
         self.gesture_manager = GestureManager(self)
 
     def viewportEvent(self, ev):
-        try:
+        if hasattr(self, 'gesture_manager'):
             ret = self.gesture_manager.handle_event(ev)
-        except AttributeError:
-            ret = None
-        if ret is not None:
-            return ret
+            if ret is not None:
+                return ret
         return super().viewportEvent(ev)
 
     def setModel(self, model):