def keyPressEvent(self, event: QKeyEvent):
clipboard = QApplication.clipboard()
if event.matches(QKeySequence.Copy):
print("Ctrl + C")
clipboard.setText("some text")
if event.matches(QKeySequence.Paste):
print("Clip Event : ", end="")
mime = clipboard.mimeData()
if mime.hasImage():
print("Image")
self.currentImage = imgFormat(
QImageTocvmat(clipboard.image()),
self.defaultLevel,
None,
(self.width, self.height),
)
self.requestImage(self.currentImage)
elif mime.hasUrls():
print("URL")
elif mime.hasText():
print("Text")
self.currentImage = imgFormat(
self.fetchImage(clipboard.text()),
self.defaultLevel,
None,
(self.width, self.height),
)
self.requestImage(self.currentImage)
else:
print("Unknown type")
def eventFilter(self, Object, event):
if Object == self.passEdit:
if event.type() == QEvent.MouseMove or event.type() == QEvent.MouseButtonDblClick:
return True
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(QKeySequence.Copy):
return True
return super().eventFilter(self, Object, QEvent)
def eventFilter(self, object, event):
if object == self.edit:#这里是对事件的判断。其中QKeyEvent类描述了一个关键事件。当按下或释放按键时，主要事件将发送到具有键盘输入焦点的小部件。然后运用matches方法匹配具体的按键。
if event.type() == QEvent.MouseMove or event.type() == QEvent.MouseButtonDblClick:
return True
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(QKeySequence.Copy) or key.matches(QKeySequence.Paste):#然后进行事件判断与转换：鼠标移动对应的事件类型为QEvent.MouseMove，鼠标双击对应的事件类型为QEvent.MouseButtonDblClick，全选、复制、粘贴对应的事件类型为 QEvent.KeyPress，当接收到这些事件时，需要被过滤掉，所以返回true。
return True
return QDialog.eventFilter(self, object, event)#继续传递该事件到被观察者，由其本身调用相应的事件
def eventFilter(self, object, event):
if object == self.edit:
if event.type() == QEvent.MouseMove or event.type() == QEvent.MouseButtonDblClick:
return True
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(QKeySequence.Copy) or key.matches(QKeySequence.Paste):
return True
return QDialog.eventFilter(self, object, event) #继续传递该事件到被观察者，由其本身调用相应的事件
def keyPressEvent(self, event: QKeyEvent):
if self.window().is_dirty() \
and (event.matches(QKeySequence.MoveToNextLine) or event.matches(QKeySequence.MoveToPreviousLine)):
veto = self.window().central_widget.promptToSave()
if not veto:
QTreeWidget.keyPressEvent(self, event)
else:
event.ignore()
else:
QTreeWidget.keyPressEvent(self, event)
def keyPressEvent(self, event: QKeyEvent):
if self.window().is_dirty() \
and (event.matches(QKeySequence.MoveToNextLine) or event.matches(QKeySequence.MoveToPreviousLine)):
veto = self.window().central_widget.promptToSave()
if not veto:
QTreeWidget.keyPressEvent(self, event)
else:
event.ignore()
else:
QTreeWidget.keyPressEvent(self, event)
def eventFilter(self, object, event):
if object == self.edit: # 如果接受事件的对象是QLineEdit生成的对象
if event.type() == QEvent.MouseMove or event.type(
) == QEvent.MouseButtonDblClick:
return True
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(QKeySequence.Copy) or \
key.matches(QKeySequence.Paste):
return True
return QDialog.eventFilter(self, object, event)
def keyPressEvent(self, event: QKeyEvent):
char = event.text()
if (char and ord(char) in range(ord(' '), ord('~') + 1) or char.isalpha()) \
and (event.modifiers() in (Qt.NoModifier, Qt.ShiftModifier)
or event.modifiers() & Qt.AltModifier):
if event.modifiers() & Qt.AltModifier:
return
if not (set(char) - (VALID_CHARS | set('vV'))):
self.insert(char)
else:
if event.matches(QKeySequence.Cancel):
self.clear()
elif event.matches(QKeySequence.Copy):
if not self.text():
return
if self.selectedText():
text_to_copy = self.selectedText()
else:
text_to_copy = self.text()
text_to_copy = toEditableExpr(text_to_copy)
clipboard = QApplication.clipboard()
clipboard.setText(text_to_copy)
elif event.matches(QKeySequence.Paste):
clipboard = QApplication.clipboard()
text = clipboard.text()
if not text:
return
self.insert(text.strip())
elif event.matches(QKeySequence.Cut):
if not self.text():
return
if self.selectedText():
text_to_copy = self.selectedText()
super().keyPressEvent(event)
else:
text_to_copy = self.text()
self.clear()
text_to_copy = toEditableExpr(text_to_copy)
clipboard = QApplication.clipboard()
clipboard.setText(text_to_copy)
else:
super().keyPressEvent(event)
def keyPressEvent(self, event: QKeyEvent):
if event.matches(QKeySequence.Copy):
selected_indexes = [
(x.row(), x.column())
for x in self.selectionModel().selectedIndexes()
]
_logger.info('Copying the following items to the clipboard: %r',
selected_indexes)
# Dicts are ordered now. Yay!
by_row = {}
for row, column in sorted(selected_indexes):
by_row.setdefault(row, []).append(column)
out_strings = []
for row, column_list in by_row.items():
out_strings.append('\t'.join([
self._model.render_item_for_clipboard(
self._model.index(row, col)) for col in column_list
]))
if out_strings:
QApplication.clipboard().setText(os.linesep.join(out_strings))
else:
super(_TableView, self).keyPressEvent(event)
def keyPressEvent(self, e: QtGui.QKeyEvent) -> None:
if e.matches(QtGui.QKeySequence.Delete):
rows: List[int] = list()
for index in self.selectedIndexes():
row = index.row()
if row not in rows:
rows.append(row)
idList = []
for row in rows:
data = self.model().getData()[row]
idList.append(data["key"])
self.requestDelete(idList)
#elif e.key() == QtCore.Qt.Key_Return and e.modifiers() == QtCore.Qt.AltModifier:
# print("ALT RETURN!!")
# for index in self.selectedIndexes():
# print(index)
# print(index.row())
# print(index.column())
# self.openPersistentEditor(index)
# break
elif e.key() == QtCore.Qt.Key_Return:
for index in self.selectedIndexes():
self.itemActivated.emit(self.model().getData()[index.row()])
else:
super(ListTableView, self).keyPressEvent(e)
def eventFilter(self, object, event):
'''
鼠标移动对应的事件类型为QEvent.MouseMove，
鼠标双击对应的事件类型为QEvent.MouseButtonDblClick，
全选、复制、粘贴对应的事件类型为 QEvent.KeyPress，当接收到这些事件时，需要被过滤掉，返回true。
'''
if object == self.edit:
if event.type() == QEvent.MouseMove or event.type(
) == QEvent.MouseButtonDblClick:
return True
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(
QKeySequence.Copy) or key.matches(QKeySequence.Paste):
return True
return QDialog.eventFilter(self, object,
event) #继续传递该事件到被观察者，由其本身调用相应的事件
def keyPressEvent(self, e: QtGui.QKeyEvent) -> None: """ Catch and handle QKeySequence.Delete. """ if e.matches(QtGui.QKeySequence.Delete): for index in self.selectionModel().selection().indexes(): self.model().removeItemAtIndex(index) else: super(SelectedEntitiesWidget, self).keyPressEvent(e)
def eventFilter(self, object, event):
# eventFilter must put in the same thread with bond object
# if not in the same thread, nothing will be done
if object == self.edit:
if event.type() == QEvent.MouseMove or event.type(
) == QEvent.MouseButtonDblClick:
# return True for stopping next operation
# otherwise return False
return True
# if delete received object in eventFilter(), must return True
# if return False, Qt will sender event to deleted object, which will lead to a crash
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(QKeySequence.Copy) or \
key.matches(QKeySequence.Paste):
return True
# it is important to add this return, and it will return this event to QLineEdit object
# keep sending this event to bond object
return QDialog.eventFilter(self, object, event)
def keyPressEvent(self, event: QKeyEvent):
if event.matches(QKeySequence.Paste):
text = QApplication.clipboard().text()
# print(text)
list = text.splitlines()
for i, r in enumerate(list):
print(i, r)
item = QListWidgetItem(r)
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsEditable
| Qt.EditRole | Qt.PlainText
| Qt.TextEditorInteraction | Qt.TextEditable
| Qt.TextSelectableByKeyboard)
self.theList.addItem(item)
def keyPressEvent(self, e: QKeyEvent):
if e.matches(QKeySequence.MoveToPreviousLine):
pass
elif e.matches(QKeySequence.MoveToNextLine):
pass
elif e.matches(QKeySequence.Paste):
pass
elif e.matches(QKeySequence.InsertParagraphSeparator):
if not self.multi_line_mode:
cmd = self.getCommand()
self.push_command.emit(cmd)
self.prompted = False
self.checkEditable()
else:
super().keyPressEvent(e)
elif e.matches(self.multi_line_return):
if self.multi_line_mode:
cmd = self.getCommand()
cmd.replace('\u2029', '\n')
self.push_command.emit(cmd)
self.prompted = False
self.checkEditable()
else:
super().keyPressEvent(e)
def keyPressEvent(self, event: QKeyEvent):
if event.key() in [Qt.Key_Return, Qt.Key_Enter]:
# Add the input data into the List Widget
theText = self._serialNumItem.text()
item = QListWidgetItem(theText)
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsEditable | Qt.PlainText)
self._serialNumList.addItem(item)
self._serialNumItem.clear()
if event.key() in [Qt.Key_Delete]:
# Remove the selected data from the List Widget
row = self._serialNumList.currentRow()
self._serialNumList.takeItem(row)
if event.matches(QKeySequence.Paste):
# Add the clipboard data into the List Widget
theText = QApplication.clipboard().text()
# print(theText)
theList = theText.splitlines()
for i, r in enumerate(theList):
print(i, r)
item = QListWidgetItem(r)
item.setFlags(Qt.ItemIsEnabled | Qt.ItemIsEditable | Qt.PlainText)
self._serialNumList.addItem(item)
def keyPressEvent(self, event: QKeyEvent):
if event.matches(QKeySequence.Copy):
selected_rows = [
x.row()
for x in self._table.selectionModel().selectedIndexes()
]
_logger.info('Copying the following rows to the clipboard: %r',
selected_rows)
if len(selected_rows) == 1:
out_strings = [self._table.item(selected_rows[0], 0).text()]
else:
out_strings = []
for row in selected_rows:
header = self._table.verticalHeaderItem(row).text()
data = self._table.item(row, 0).text()
out_strings.append(f'{header}\t{data}')
if out_strings:
QApplication.clipboard().setText(os.linesep.join(out_strings))
else:
super(LittleBobbyTablesWidget, self).keyPressEvent(event)
def eventFilter(self, object, event):
'''
事件过滤器，主要是对密码输入框进行操作的。
'''
if object == self.lineEdit_2:
if event.type() == QEvent.MouseMove or event.type(
) == QEvent.MouseButtonDblClick:
return True # 鼠标移动、鼠标双击过滤掉
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(
QKeySequence.Copy) or key.matches(QKeySequence.Paste):
return True # 键盘全选、复制、粘贴快捷键过滤掉
elif object == self.lineEdit_3:
# 同上
if event.type() == QEvent.MouseMove or event.type(
) == QEvent.MouseButtonDblClick:
return True
elif event.type() == QEvent.KeyPress:
key = QKeyEvent(event)
if key.matches(QKeySequence.SelectAll) or key.matches(
QKeySequence.Copy) or key.matches(QKeySequence.Paste):
return True
return QDialog.eventFilter(self, object, event)
def keyPressEvent(self, event: QKeyEvent):
if event.key() == Qt.Key_Delete:
min_row, max_row, start, end = self.selection_range()
if min_row == max_row == start == end == -1:
return
self.setEnabled(False)
self.setCursor(Qt.WaitCursor)
self.model().delete_range(min_row, max_row, start, end - 1)
self.unsetCursor()
self.setEnabled(True)
self.setFocus()
if event.matches(QKeySequence.Copy):
self.on_copy_action_triggered()
return
if event.key() == Qt.Key_Space:
min_row, max_row, start, _ = self.selection_range()
if start == -1:
return
self.model().insert_column(start, list(range(min_row,
max_row + 1)))
if event.key() not in (Qt.Key_Right, Qt.Key_Left, Qt.Key_Up, Qt.Key_Down) \
or event.modifiers() == Qt.ShiftModifier:
super().keyPressEvent(event)
return
min_row, max_row, min_col, max_col = self.selection_range()
if min_row == max_row == min_col == max_col == -1:
super().keyPressEvent(event)
return
max_col -= 1
scroll_to_start = True
if event.key(
) == Qt.Key_Right and max_col < self.model().col_count - 1:
max_col += 1
min_col += 1
scroll_to_start = False
elif event.key() == Qt.Key_Left and min_col > 0:
min_col -= 1
max_col -= 1
elif event.key(
) == Qt.Key_Down and max_row < self.model().row_count - 1:
first_unhidden = -1
for row in range(max_row + 1, self.model().row_count):
if not self.isRowHidden(row):
first_unhidden = row
break
if first_unhidden != -1:
sel_len = max_row - min_row
max_row = first_unhidden
min_row = max_row - sel_len
scroll_to_start = False
elif event.key() == Qt.Key_Up and min_row > 0:
first_unhidden = -1
for row in range(min_row - 1, -1, -1):
if not self.isRowHidden(row):
first_unhidden = row
break
if first_unhidden != -1:
sel_len = max_row - min_row
min_row = first_unhidden
max_row = min_row + sel_len
start = self.model().index(min_row, min_col)
end = self.model().index(max_row, max_col)
selection = QItemSelection()
selection.select(start, end)
self.setCurrentIndex(start)
self.selectionModel().setCurrentIndex(
end, QItemSelectionModel.ClearAndSelect)
self.selectionModel().select(selection,
QItemSelectionModel.ClearAndSelect)
if scroll_to_start:
self.scrollTo(start)
else:
self.scrollTo(end)
def keyPressEvent(self, event: QKeyEvent):
if event.key() == Qt.Key_Delete:
min_row, max_row, start, end = self.selection_range()
if min_row == max_row == start == end == -1:
return
self.setEnabled(False)
self.setCursor(Qt.WaitCursor)
self.model().delete_range(min_row, max_row, start, end - 1)
self.unsetCursor()
self.setEnabled(True)
self.setFocus()
if event.matches(QKeySequence.Copy):
self.on_copy_action_triggered()
return
if event.key() == Qt.Key_Space:
min_row, max_row, start, _ = self.selection_range()
if start == -1:
return
self.model().insert_column(start, list(range(min_row, max_row + 1)))
if event.key() not in (Qt.Key_Right, Qt.Key_Left, Qt.Key_Up, Qt.Key_Down) \
or event.modifiers() == Qt.ShiftModifier:
super().keyPressEvent(event)
return
min_row, max_row, min_col, max_col = self.selection_range()
if min_row == max_row == min_col == max_col == -1:
super().keyPressEvent(event)
return
max_col -= 1
scroll_to_start = True
if event.key() == Qt.Key_Right and max_col < self.model().col_count - 1:
max_col += 1
min_col += 1
scroll_to_start = False
elif event.key() == Qt.Key_Left and min_col > 0:
min_col -= 1
max_col -= 1
elif event.key() == Qt.Key_Down and max_row < self.model().row_count - 1:
first_unhidden = -1
for row in range(max_row + 1, self.model().row_count):
if not self.isRowHidden(row):
first_unhidden = row
break
if first_unhidden != -1:
sel_len = max_row - min_row
max_row = first_unhidden
min_row = max_row - sel_len
scroll_to_start = False
elif event.key() == Qt.Key_Up and min_row > 0:
first_unhidden = -1
for row in range(min_row - 1, -1, -1):
if not self.isRowHidden(row):
first_unhidden = row
break
if first_unhidden != -1:
sel_len = max_row - min_row
min_row = first_unhidden
max_row = min_row + sel_len
start = self.model().index(min_row, min_col)
end = self.model().index(max_row, max_col)
selection = QItemSelection()
selection.select(start, end)
self.setCurrentIndex(start)
self.selectionModel().setCurrentIndex(end, QItemSelectionModel.ClearAndSelect)
self.selectionModel().select(selection, QItemSelectionModel.ClearAndSelect)
if scroll_to_start:
self.scrollTo(start)
else:
self.scrollTo(end)
def keyPressEvent(self, e: QKeyEvent):
if e.matches(QKeySequence.Paste):
self.load_grid_from_clipboard()
else:
super().keyPressEvent(e)
def keyPressEvent(self, event: QKeyEvent):
if event.key() == Qt.Key_Delete:
selected = self.selectionModel().selection()
""":type: QtGui.QItemSelection """
if selected.isEmpty():
return
min_row = numpy.min([rng.top() for rng in selected])
max_row = numpy.max([rng.bottom() for rng in selected])
start = numpy.min([rng.left() for rng in selected])
end = numpy.max([rng.right() for rng in selected])
self.setEnabled(False)
self.setCursor(Qt.WaitCursor)
self.model().delete_range(min_row, max_row, start, end)
self.unsetCursor()
self.setEnabled(True)
self.setFocus()
if event.matches(QKeySequence.Copy):
cells = self.selectedIndexes()
cells.sort()
currentRow = 0
text = ""
for cell in cells:
if len(text) > 0 and cell.row() != currentRow:
text += "\n"
currentRow = cell.row()
if cell.data():
text += str(cell.data())
QApplication.instance().clipboard().setText(text)
return
if event.key() not in (Qt.Key_Right, Qt.Key_Left, Qt.Key_Up, Qt.Key_Down) \
or event.modifiers() == Qt.ShiftModifier:
super().keyPressEvent(event)
return
sel = self.selectionModel().selectedIndexes()
cols = [i.column() for i in sel]
rows = [i.row() for i in sel]
if len(cols) == 0 or len(rows) == 0:
super().keyPressEvent(event)
return
mincol, maxcol = numpy.min(cols), numpy.max(cols)
minrow, maxrow = numpy.min(rows), numpy.max(rows)
scroll_to_start = True
if event.key() == Qt.Key_Right and maxcol < self.model().col_count - 1:
maxcol += 1
mincol += 1
scroll_to_start = False
elif event.key() == Qt.Key_Left and mincol > 0:
mincol -= 1
maxcol -= 1
elif event.key(
) == Qt.Key_Down and maxrow < self.model().row_count - 1:
first_unhidden = -1
for row in range(maxrow + 1, self.model().row_count):
if not self.isRowHidden(row):
first_unhidden = row
break
if first_unhidden != -1:
sel_len = maxrow - minrow
maxrow = first_unhidden
minrow = maxrow - sel_len
scroll_to_start = False
elif event.key() == Qt.Key_Up and minrow > 0:
first_unhidden = -1
for row in range(minrow - 1, -1, -1):
if not self.isRowHidden(row):
first_unhidden = row
break
if first_unhidden != -1:
sel_len = maxrow - minrow
minrow = first_unhidden
maxrow = minrow + sel_len
start = self.model().index(minrow, mincol)
end = self.model().index(maxrow, maxcol)
selctn = QItemSelection()
selctn.select(start, end)
self.selectionModel().setCurrentIndex(
end, QItemSelectionModel.ClearAndSelect)
self.selectionModel().select(selctn,
QItemSelectionModel.ClearAndSelect)
if scroll_to_start:
self.scrollTo(start)
else:
self.scrollTo(end)
def keyPressEvent(self, event: QKeyEvent):
if event.type() == QKeyEvent.KeyPress \
and event.matches(QKeySequence.Copy):
self.copy_selection_to_clipboard()
else:
super().keyPressEvent(event)
def keyPressEvent(self, event: QKeyEvent) -> None:
if event.matches(QKeySequence.Find):
self.find.setFocus()
else:
super().keyPressEvent(event)
