本文整理匯總了Python中PyQt4.QtGui.QKeySequence.isEmpty方法的典型用法代碼示例。如果您正苦於以下問題：Python QKeySequence.isEmpty方法的具體用法？Python QKeySequence.isEmpty怎麽用？Python QKeySequence.isEmpty使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類PyQt4.QtGui.QKeySequence的用法示例。
在下文中一共展示了QKeySequence.isEmpty方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: validateAction
# 需要導入模塊: from PyQt4.QtGui import QKeySequence [as 別名]
# 或者: from PyQt4.QtGui.QKeySequence import isEmpty [as 別名]
def validateAction(self, row, column):
if column != 1:
return
table = self.actionTable
item = table.item(row, column)
shortcutText = QKeySequence(item.text()).toString()
thisRow = table.row(item)
if not shortcutText.isEmpty():
for row in range(table.rowCount()):
if row == thisRow:
continue
other = table.item(row, 1)
if other.text() == shortcutText:
other.setText(item.oldShortcutText)
break
item.setText(shortcutText)
item.oldShortcutText = shortcutText
table.resizeColumnToContents(1)示例2: KeySequenceButton
# 需要導入模塊: from PyQt4.QtGui import QKeySequence [as 別名]
# 或者: from PyQt4.QtGui.QKeySequence import isEmpty [as 別名]
class KeySequenceButton(QPushButton):
def __init__(self, parent=None):
super(KeySequenceButton, self).__init__(parent)
self.setIcon(icons.get("configure"))
self._modifierlessAllowed = False
self._seq = QKeySequence()
self._timer = QTimer()
self._timer.setSingleShot(True)
self._isrecording = False
self.clicked.connect(self.startRecording)
self._timer.timeout.connect(self.doneRecording)
def setKeySequence(self, seq):
self._seq = seq
self.updateDisplay()
def keySequence(self):
if self._isrecording:
self.doneRecording()
return self._seq
def updateDisplay(self):
if self._isrecording:
s = self._recseq.toString(QKeySequence.NativeText).replace("&", "&&")
if self._modifiers:
if s:
s += ","
s += QKeySequence(self._modifiers).toString(QKeySequence.NativeText)
elif self._recseq.isEmpty():
s = _("Input")
s += " ..."
else:
s = self._seq.toString(QKeySequence.NativeText).replace("&", "&&")
self.setText(s)
def isRecording(self):
return self._isrecording
def event(self, ev):
if self._isrecording:
# prevent Qt from special casing Tab and Backtab
if ev.type() == QEvent.KeyPress:
self.keyPressEvent(ev)
return True
return super(KeySequenceButton, self).event(ev)
def keyPressEvent(self, ev):
if not self._isrecording:
return super(KeySequenceButton, self).keyPressEvent(ev)
if ev.isAutoRepeat():
return
modifiers = int(ev.modifiers() & (Qt.SHIFT | Qt.CTRL | Qt.ALT | Qt.META))
ev.accept()
key = ev.key()
# check if key is a modifier or a character key without modifier (and if that is allowed)
if (
# don't append the key if the key is -1 (garbage) or a modifier ...
key not in (-1, Qt.Key_AltGr, Qt.Key_Shift, Qt.Key_Control, Qt.Key_Alt, Qt.Key_Meta, Qt.Key_Menu)
# or if this is the first key and without modifier and modifierless keys are not allowed
and (
self._modifierlessAllowed
or self._recseq.count() > 0
or modifiers & ~Qt.SHIFT
or not ev.text()
or (
modifiers & Qt.SHIFT
and key
in (
Qt.Key_Return,
Qt.Key_Space,
Qt.Key_Tab,
Qt.Key_Backtab,
Qt.Key_Backspace,
Qt.Key_Delete,
Qt.Key_Escape,
)
)
)
):
# change Shift+Backtab into Shift+Tab
if key == Qt.Key_Backtab and modifiers & Qt.SHIFT:
key = Qt.Key_Tab | modifiers
# remove the Shift modifier if it doesn't make sense
# elif (Qt.Key_Exclam <= key <= Qt.Key_At
# or Qt.Key_Z < key <= 0x0ff):
# key = key | (modifiers & ~Qt.SHIFT)
else:
key = key | modifiers
# append max. 4 keystrokes
if self._recseq.count() < 4:
l = list(self._recseq)
l.append(key)
self._recseq = QKeySequence(*l)
self._modifiers = modifiers
self.controlTimer()
self.updateDisplay()
#.........這裏部分代碼省略.........