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Proper fix for finding Qt base class in dnd mouse handlers

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The change for py3 compat broke the handler for classes not directly
descended from a Qt item view class.
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Kovid Goyal 2019-04-02 13:31:55 +05:30
parent 6272e4db9d
commit bcece5de0b
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1 changed files with 10 additions and 3 deletions
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13
src/calibre/gui2/library/alternate_views.py
View File

@ -17,7 +17,7 @@ from PyQt5.Qt import (
QMimeData, QUrl, QDrag, QPoint, QPainter, QRect, pyqtProperty, QEvent,
QPropertyAnimation, QEasingCurve, pyqtSlot, QHelpEvent, QAbstractItemView,
QStyleOptionViewItem, QToolTip, QByteArray, QBuffer, QBrush, qRed, qGreen,
qBlue, QItemSelectionModel, QIcon, QFont)
qBlue, QItemSelectionModel, QIcon, QFont, QTableView, QTreeView)
from calibre import fit_image, prints, prepare_string_for_xml, human_readable
from calibre.constants import DEBUG, config_dir, islinux
@ -85,6 +85,13 @@ def image_to_data(image): # {{{
# Drag 'n Drop {{{
def qt_item_view_base_class(self):
for q in (QTableView, QListView, QTreeView):
if isinstance(self, q):
return q
return QAbstractItemView
def dragMoveEvent(self, event):
event.acceptProposedAction()
@ -102,7 +109,7 @@ def mousePressEvent(self, event):
self.drag_start_pos = ep
if hasattr(self, 'handle_mouse_press_event'):
return self.handle_mouse_press_event(event)
return super(self.__class__, self).mousePressEvent(event)
return qt_item_view_base_class(self).mousePressEvent(self, event)
def drag_icon(self, cover, multiple):
@ -182,7 +189,7 @@ def mouseMoveEvent(self, event):
if not self.drag_allowed:
return
if self.drag_start_pos is None:
return super(self.__class__, self).mouseMoveEvent(event)
return qt_item_view_base_class(self).mouseMoveEvent(self, event)
if self.event_has_mods():
self.drag_start_pos = None