def __init__(self, text_edit, hide_timer_on=False, as_tooltip=False):
""" Create a call tip manager that is attached to the specified Qt
text edit widget.
"""
assert isinstance(text_edit, (QTextEdit, QPlainTextEdit))
super(CallTipWidget, self).__init__(None, Qt.ToolTip)
self.app = QCoreApplication.instance()
self.as_tooltip = as_tooltip
self.hide_timer_on = hide_timer_on
self.tip = None
self._hide_timer = QBasicTimer()
self._text_edit = text_edit
# Setup
if sys.platform == 'darwin':
# This keeps the hints below other applications
self.setWindowFlags(Qt.SplashScreen)
else:
self.setWindowFlags(Qt.ToolTip | Qt.FramelessWindowHint)
self.setTextInteractionFlags(Qt.TextSelectableByMouse)
self.setFont(text_edit.document().defaultFont())
self.setForegroundRole(QPalette.ToolTipText)
self.setBackgroundRole(QPalette.ToolTipBase)
self.setPalette(QToolTip.palette())
self.setAlignment(Qt.AlignLeft)
self.setIndent(1)
self.setFrameStyle(QFrame.NoFrame)
self.setMargin(1 + self.style().pixelMetric(
QStyle.PM_ToolTipLabelFrameWidth, None, self))
def initUI(self):
ml = QVBoxLayout(self)
ul = QHBoxLayout(self)
dl = QHBoxLayout(self)
ml.addLayout(ul)
ml.addLayout(dl)
col = QColor(0, 0, 0)
self.colorText = 'Color Nmae: {}'
self.btn = QPushButton('Dialog', self)
self.btn.move(20, 20)
self.btn.clicked.connect(self.showDialog)
self.btn2 = QPushButton('Color', self)
self.btn2.move(20, 40)
self.btn2.clicked.connect(self.showColorDialoge)
self.frm = QFrame(self)
self.frm.setStyleSheet("QWidget { background-color: %s }" % col.name())
self.frm.setGeometry(130, 50, 100, 100)
self.le = QLineEdit(self)
self.le.move(130, 22)
self.label = QLabel(self.colorText.format(None), self)
self.label.setGeometry(20, 80, 100, 30)
self.timer = QBasicTimer()
self.pb = QProgressBar(self)
self.step = 0
self.pb.setGeometry(20, 170, 300, 20)
# calendar
self.timeLable = QLabel('time is: ', self)
# self.timeLable.setGeometry(20, 120, 100, 30)
cal = QCalendarWidget(self)
cal.clicked[QDate].connect(self.showDate)
ul.addWidget(self.timeLable)
dl.addWidget(cal)
self.setLayout(ml)
self.setGeometry(300, 300, 550, 550)
self.setWindowTitle('Dialog')
self.show()
def __init__(self, text_edit, hide_timer_on=False):
""" Create a call tip manager that is attached to the specified Qt
text edit widget.
"""
assert isinstance(text_edit, (QTextEdit, QPlainTextEdit))
super(CallTipWidget, self).__init__(None, Qt.ToolTip)
self.app = QCoreApplication.instance()
self.hide_timer_on = hide_timer_on
self._hide_timer = QBasicTimer()
self._text_edit = text_edit
self.setFont(text_edit.document().defaultFont())
self.setForegroundRole(QPalette.ToolTipText)
self.setBackgroundRole(QPalette.ToolTipBase)
self.setPalette(QToolTip.palette())
self.setAlignment(Qt.AlignLeft)
self.setIndent(1)
self.setFrameStyle(QFrame.NoFrame)
self.setMargin(1 + self.style().pixelMetric(
QStyle.PM_ToolTipLabelFrameWidth, None, self))
def __init__(self, text_edit, hide_timer_on=False):
""" Create a call tip manager that is attached to the specified Qt
text edit widget.
"""
assert isinstance(text_edit, (QTextEdit, QPlainTextEdit))
super(CallTipWidget, self).__init__(None, Qt.ToolTip)
self.app = QCoreApplication.instance()
self.hide_timer_on = hide_timer_on
self._hide_timer = QBasicTimer()
self._text_edit = text_edit
self.setFont(text_edit.document().defaultFont())
self.setForegroundRole(QPalette.ToolTipText)
self.setBackgroundRole(QPalette.ToolTipBase)
self.setPalette(QToolTip.palette())
self.setAlignment(Qt.AlignLeft)
self.setIndent(1)
self.setFrameStyle(QFrame.NoFrame)
self.setMargin(1 + self.style().pixelMetric(QStyle.PM_ToolTipLabelFrameWidth, None, self))
class CallTipWidget(QLabel):
""" Shows call tips by parsing the current text of Q[Plain]TextEdit.
"""
#--------------------------------------------------------------------------
# 'QObject' interface
#--------------------------------------------------------------------------
def __init__(self, text_edit, hide_timer_on=False):
""" Create a call tip manager that is attached to the specified Qt
text edit widget.
"""
assert isinstance(text_edit, (QTextEdit, QPlainTextEdit))
super(CallTipWidget, self).__init__(None, Qt.ToolTip)
self.app = QCoreApplication.instance()
self.hide_timer_on = hide_timer_on
self.tip = None
self._hide_timer = QBasicTimer()
self._text_edit = text_edit
self.setFont(text_edit.document().defaultFont())
self.setForegroundRole(QPalette.ToolTipText)
self.setBackgroundRole(QPalette.ToolTipBase)
self.setPalette(QToolTip.palette())
self.setAlignment(Qt.AlignLeft)
self.setIndent(1)
self.setFrameStyle(QFrame.NoFrame)
self.setMargin(1 + self.style().pixelMetric(
QStyle.PM_ToolTipLabelFrameWidth, None, self))
def eventFilter(self, obj, event):
""" Reimplemented to hide on certain key presses and on text edit focus
changes.
"""
if obj == self._text_edit:
etype = event.type()
if etype == QEvent.KeyPress:
key = event.key()
cursor = self._text_edit.textCursor()
prev_char = self._text_edit.get_character(cursor.position(),
offset=-1)
if key in (Qt.Key_Enter, Qt.Key_Return, Qt.Key_Down,
Qt.Key_Up):
self.hide()
elif key == Qt.Key_Escape:
self.hide()
return True
elif prev_char == ')':
self.hide()
elif etype == QEvent.FocusOut:
self.hide()
elif etype == QEvent.Enter:
if (self._hide_timer.isActive()
and self.app.topLevelAt(QCursor.pos()) == self):
self._hide_timer.stop()
elif etype == QEvent.Leave:
self._leave_event_hide()
return super(CallTipWidget, self).eventFilter(obj, event)
def timerEvent(self, event):
""" Reimplemented to hide the widget when the hide timer fires.
"""
if event.timerId() == self._hide_timer.timerId():
self._hide_timer.stop()
self.hide()
#--------------------------------------------------------------------------
# 'QWidget' interface
#--------------------------------------------------------------------------
def enterEvent(self, event):
""" Reimplemented to cancel the hide timer.
"""
super(CallTipWidget, self).enterEvent(event)
if (self._hide_timer.isActive()
and self.app.topLevelAt(QCursor.pos()) == self):
self._hide_timer.stop()
def hideEvent(self, event):
""" Reimplemented to disconnect signal handlers and event filter.
"""
super(CallTipWidget, self).hideEvent(event)
self._text_edit.cursorPositionChanged.disconnect(
self._cursor_position_changed)
self._text_edit.removeEventFilter(self)
def leaveEvent(self, event):
""" Reimplemented to start the hide timer.
"""
super(CallTipWidget, self).leaveEvent(event)
self._leave_event_hide()
def mousePressEvent(self, event):
super(CallTipWidget, self).mousePressEvent(event)
self.hide()
def paintEvent(self, event):
""" Reimplemented to paint the background panel.
"""
painter = QStylePainter(self)
option = QStyleOptionFrame()
option.initFrom(self)
painter.drawPrimitive(QStyle.PE_PanelTipLabel, option)
painter.end()
super(CallTipWidget, self).paintEvent(event)
def setFont(self, font):
""" Reimplemented to allow use of this method as a slot.
"""
super(CallTipWidget, self).setFont(font)
def showEvent(self, event):
""" Reimplemented to connect signal handlers and event filter.
"""
super(CallTipWidget, self).showEvent(event)
self._text_edit.cursorPositionChanged.connect(
self._cursor_position_changed)
self._text_edit.installEventFilter(self)
def focusOutEvent(self, event):
""" Reimplemented to hide it when focus goes out of the main
window.
"""
self.hide()
#--------------------------------------------------------------------------
# 'CallTipWidget' interface
#--------------------------------------------------------------------------
def show_tip(self, point, tip, wrapped_tiplines):
""" Attempts to show the specified tip at the current cursor location.
"""
# Don't attempt to show it if it's already visible and the text
# to be displayed is the same as the one displayed before.
if self.isVisible():
if self.tip == tip:
return True
else:
self.hide()
# Attempt to find the cursor position at which to show the call tip.
text_edit = self._text_edit
cursor = text_edit.textCursor()
search_pos = cursor.position() - 1
self._start_position, _ = self._find_parenthesis(search_pos,
forward=False)
if self._start_position == -1:
return False
if self.hide_timer_on:
self._hide_timer.stop()
# Logic to decide how much time to show the calltip depending
# on the amount of text present
if len(wrapped_tiplines) == 1:
args = wrapped_tiplines[0].split('(')[1]
nargs = len(args.split(','))
if nargs == 1:
hide_time = 1400
elif nargs == 2:
hide_time = 1600
else:
hide_time = 1800
elif len(wrapped_tiplines) == 2:
args1 = wrapped_tiplines[1].strip()
nargs1 = len(args1.split(','))
if nargs1 == 1:
hide_time = 2500
else:
hide_time = 2800
else:
hide_time = 3500
self._hide_timer.start(hide_time, self)
# Set the text and resize the widget accordingly.
self.tip = tip
self.setText(tip)
self.resize(self.sizeHint())
# Locate and show the widget. Place the tip below the current line
# unless it would be off the screen. In that case, decide the best
# location based trying to minimize the area that goes off-screen.
padding = 3 # Distance in pixels between cursor bounds and tip box.
cursor_rect = text_edit.cursorRect(cursor)
screen_rect = self.app.desktop().screenGeometry(text_edit)
point.setY(point.y() + padding)
tip_height = self.size().height()
tip_width = self.size().width()
vertical = 'bottom'
horizontal = 'Right'
if point.y() + tip_height > screen_rect.height() + screen_rect.y():
point_ = text_edit.mapToGlobal(cursor_rect.topRight())
# If tip is still off screen, check if point is in top or bottom
# half of screen.
if point_.y() - tip_height < padding:
# If point is in upper half of screen, show tip below it.
# otherwise above it.
if 2 * point.y() < screen_rect.height():
vertical = 'bottom'
else:
vertical = 'top'
else:
vertical = 'top'
if point.x() + tip_width > screen_rect.width() + screen_rect.x():
point_ = text_edit.mapToGlobal(cursor_rect.topRight())
# If tip is still off-screen, check if point is in the right or
# left half of the screen.
if point_.x() - tip_width < padding:
if 2 * point.x() < screen_rect.width():
horizontal = 'Right'
else:
horizontal = 'Left'
else:
horizontal = 'Left'
pos = getattr(cursor_rect, '%s%s' % (vertical, horizontal))
adjusted_point = text_edit.mapToGlobal(pos())
if vertical == 'top':
point.setY(adjusted_point.y() - tip_height - padding)
if horizontal == 'Left':
point.setX(adjusted_point.x() - tip_width - padding)
self.move(point)
self.show()
return True
#--------------------------------------------------------------------------
# Protected interface
#--------------------------------------------------------------------------
def _find_parenthesis(self, position, forward=True):
""" If 'forward' is True (resp. False), proceed forwards
(resp. backwards) through the line that contains 'position' until an
unmatched closing (resp. opening) parenthesis is found. Returns a
tuple containing the position of this parenthesis (or -1 if it is
not found) and the number commas (at depth 0) found along the way.
"""
commas = depth = 0
document = self._text_edit.document()
char = to_text_string(document.characterAt(position))
# Search until a match is found or a non-printable character is
# encountered.
while category(char) != 'Cc' and position > 0:
if char == ',' and depth == 0:
commas += 1
elif char == ')':
if forward and depth == 0:
break
depth += 1
elif char == '(':
if not forward and depth == 0:
break
depth -= 1
position += 1 if forward else -1
char = to_text_string(document.characterAt(position))
else:
position = -1
return position, commas
def _leave_event_hide(self):
""" Hides the tooltip after some time has passed (assuming the cursor is
not over the tooltip).
"""
if (self.hide_timer_on and not self._hide_timer.isActive() and
# If Enter events always came after Leave events, we wouldn't need
# this check. But on Mac OS, it sometimes happens the other way
# around when the tooltip is created.
self.app.topLevelAt(QCursor.pos()) != self):
self._hide_timer.start(800, self)
#------ Signal handlers ----------------------------------------------------
def _cursor_position_changed(self):
""" Updates the tip based on user cursor movement.
"""
cursor = self._text_edit.textCursor()
position = cursor.position()
document = self._text_edit.document()
char = to_text_string(document.characterAt(position - 1))
if position <= self._start_position:
self.hide()
elif char == ')':
pos, _ = self._find_parenthesis(position - 1, forward=False)
if pos == -1:
self.hide()
class Example(QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
self.timer.start(10, self)
def initUI(self):
ml = QVBoxLayout(self)
ul = QHBoxLayout(self)
dl = QHBoxLayout(self)
ml.addLayout(ul)
ml.addLayout(dl)
col = QColor(0, 0, 0)
self.colorText = 'Color Nmae: {}'
self.btn = QPushButton('Dialog', self)
self.btn.move(20, 20)
self.btn.clicked.connect(self.showDialog)
self.btn2 = QPushButton('Color', self)
self.btn2.move(20, 40)
self.btn2.clicked.connect(self.showColorDialoge)
self.frm = QFrame(self)
self.frm.setStyleSheet("QWidget { background-color: %s }" % col.name())
self.frm.setGeometry(130, 50, 100, 100)
self.le = QLineEdit(self)
self.le.move(130, 22)
self.label = QLabel(self.colorText.format(None), self)
self.label.setGeometry(20, 80, 100, 30)
self.timer = QBasicTimer()
self.pb = QProgressBar(self)
self.step = 0
self.pb.setGeometry(20, 170, 300, 20)
# calendar
self.timeLable = QLabel('time is: ', self)
# self.timeLable.setGeometry(20, 120, 100, 30)
cal = QCalendarWidget(self)
cal.clicked[QDate].connect(self.showDate)
ul.addWidget(self.timeLable)
dl.addWidget(cal)
self.setLayout(ml)
self.setGeometry(300, 300, 550, 550)
self.setWindowTitle('Dialog')
self.show()
def showDialog(self):
# 通过下面的语句来实现QInputDialog的显示
text, ok = QInputDialog.getText(self, 'Input Dialog',
'Input some thing')
if ok:
self.le.setText(text)
def showColorDialoge(self):
col = QColorDialog.getColor() # 获取colorDialog的颜色
if col.isValid():
self.label.setText(self.colorText.format(col.name()))
self.frm.setStyleSheet("QWidget { background-color: %s}" %
col.name())
def timerEvent(self, e):
if self.step >= 100:
self.timer.stop()
else:
self.step += 1
self.pb.setValue(self.step)
def showDate(self, date):
d = date.toString(Qt.ISODate)
self.timeLable.setText(d)
class CallTipWidget(QLabel):
""" Shows call tips by parsing the current text of Q[Plain]TextEdit.
"""
#--------------------------------------------------------------------------
# 'QObject' interface
#--------------------------------------------------------------------------
def __init__(self, text_edit, hide_timer_on=False):
""" Create a call tip manager that is attached to the specified Qt
text edit widget.
"""
assert isinstance(text_edit, (QTextEdit, QPlainTextEdit))
super(CallTipWidget, self).__init__(None, Qt.ToolTip)
self.app = QCoreApplication.instance()
self.hide_timer_on = hide_timer_on
self._hide_timer = QBasicTimer()
self._text_edit = text_edit
self.setFont(text_edit.document().defaultFont())
self.setForegroundRole(QPalette.ToolTipText)
self.setBackgroundRole(QPalette.ToolTipBase)
self.setPalette(QToolTip.palette())
self.setAlignment(Qt.AlignLeft)
self.setIndent(1)
self.setFrameStyle(QFrame.NoFrame)
self.setMargin(1 + self.style().pixelMetric(
QStyle.PM_ToolTipLabelFrameWidth, None, self))
def eventFilter(self, obj, event):
""" Reimplemented to hide on certain key presses and on text edit focus
changes.
"""
if obj == self._text_edit:
etype = event.type()
if etype == QEvent.KeyPress:
key = event.key()
if key in (Qt.Key_Enter, Qt.Key_Return,
Qt.Key_Down):
self.hide()
elif key == Qt.Key_Escape:
self.hide()
return True
elif etype == QEvent.FocusOut:
self.hide()
elif etype == QEvent.Enter:
if (self._hide_timer.isActive() and
self.app.topLevelAt(QCursor.pos()) == self):
self._hide_timer.stop()
elif etype == QEvent.Leave:
self._leave_event_hide()
return super(CallTipWidget, self).eventFilter(obj, event)
def timerEvent(self, event):
""" Reimplemented to hide the widget when the hide timer fires.
"""
if event.timerId() == self._hide_timer.timerId():
self._hide_timer.stop()
self.hide()
#--------------------------------------------------------------------------
# 'QWidget' interface
#--------------------------------------------------------------------------
def enterEvent(self, event):
""" Reimplemented to cancel the hide timer.
"""
super(CallTipWidget, self).enterEvent(event)
if (self._hide_timer.isActive() and
self.app.topLevelAt(QCursor.pos()) == self):
self._hide_timer.stop()
def hideEvent(self, event):
""" Reimplemented to disconnect signal handlers and event filter.
"""
super(CallTipWidget, self).hideEvent(event)
self._text_edit.cursorPositionChanged.disconnect(
self._cursor_position_changed)
self._text_edit.removeEventFilter(self)
def leaveEvent(self, event):
""" Reimplemented to start the hide timer.
"""
super(CallTipWidget, self).leaveEvent(event)
self._leave_event_hide()
def mousePressEvent(self, event):
super(CallTipWidget, self).mousePressEvent(event)
self.hide()
def paintEvent(self, event):
""" Reimplemented to paint the background panel.
"""
painter = QStylePainter(self)
option = QStyleOptionFrame()
option.initFrom(self)
painter.drawPrimitive(QStyle.PE_PanelTipLabel, option)
painter.end()
super(CallTipWidget, self).paintEvent(event)
def setFont(self, font):
""" Reimplemented to allow use of this method as a slot.
"""
super(CallTipWidget, self).setFont(font)
def showEvent(self, event):
""" Reimplemented to connect signal handlers and event filter.
"""
super(CallTipWidget, self).showEvent(event)
self._text_edit.cursorPositionChanged.connect(
self._cursor_position_changed)
self._text_edit.installEventFilter(self)
#--------------------------------------------------------------------------
# 'CallTipWidget' interface
#--------------------------------------------------------------------------
def show_tip(self, point, tip, wrapped_tiplines):
""" Attempts to show the specified tip at the current cursor location.
"""
# Attempt to find the cursor position at which to show the call tip.
text_edit = self._text_edit
cursor = text_edit.textCursor()
search_pos = cursor.position() - 1
self._start_position, _ = self._find_parenthesis(search_pos,
forward=False)
if self._start_position == -1:
return False
if self.hide_timer_on:
self._hide_timer.stop()
# Logic to decide how much time to show the calltip depending
# on the amount of text present
if len(wrapped_tiplines) == 1:
args = wrapped_tiplines[0].split('(')[1]
nargs = len(args.split(','))
if nargs == 1:
hide_time = 1400
elif nargs == 2:
hide_time = 1600
else:
hide_time = 1800
elif len(wrapped_tiplines) == 2:
args1 = wrapped_tiplines[1].strip()
nargs1 = len(args1.split(','))
if nargs1 == 1:
hide_time = 2500
else:
hide_time = 2800
else:
hide_time = 3500
self._hide_timer.start(hide_time, self)
# Set the text and resize the widget accordingly.
self.setText(tip)
self.resize(self.sizeHint())
# Locate and show the widget. Place the tip below the current line
# unless it would be off the screen. In that case, decide the best
# location based trying to minimize the area that goes off-screen.
padding = 3 # Distance in pixels between cursor bounds and tip box.
cursor_rect = text_edit.cursorRect(cursor)
screen_rect = self.app.desktop().screenGeometry(text_edit)
point.setY(point.y() + padding)
tip_height = self.size().height()
tip_width = self.size().width()
vertical = 'bottom'
horizontal = 'Right'
if point.y() + tip_height > screen_rect.height() + screen_rect.y():
point_ = text_edit.mapToGlobal(cursor_rect.topRight())
# If tip is still off screen, check if point is in top or bottom
# half of screen.
if point_.y() - tip_height < padding:
# If point is in upper half of screen, show tip below it.
# otherwise above it.
if 2*point.y() < screen_rect.height():
vertical = 'bottom'
else:
vertical = 'top'
else:
vertical = 'top'
if point.x() + tip_width > screen_rect.width() + screen_rect.x():
point_ = text_edit.mapToGlobal(cursor_rect.topRight())
# If tip is still off-screen, check if point is in the right or
# left half of the screen.
if point_.x() - tip_width < padding:
if 2*point.x() < screen_rect.width():
horizontal = 'Right'
else:
horizontal = 'Left'
else:
horizontal = 'Left'
pos = getattr(cursor_rect, '%s%s' %(vertical, horizontal))
adjusted_point = text_edit.mapToGlobal(pos())
if vertical == 'top':
point.setY(adjusted_point.y() - tip_height - padding)
if horizontal == 'Left':
point.setX(adjusted_point.x() - tip_width - padding)
self.move(point)
self.show()
return True
#--------------------------------------------------------------------------
# Protected interface
#--------------------------------------------------------------------------
def _find_parenthesis(self, position, forward=True):
""" If 'forward' is True (resp. False), proceed forwards
(resp. backwards) through the line that contains 'position' until an
unmatched closing (resp. opening) parenthesis is found. Returns a
tuple containing the position of this parenthesis (or -1 if it is
not found) and the number commas (at depth 0) found along the way.
"""
commas = depth = 0
document = self._text_edit.document()
char = to_text_string(document.characterAt(position))
# Search until a match is found or a non-printable character is
# encountered.
while category(char) != 'Cc' and position > 0:
if char == ',' and depth == 0:
commas += 1
elif char == ')':
if forward and depth == 0:
break
depth += 1
elif char == '(':
if not forward and depth == 0:
break
depth -= 1
position += 1 if forward else -1
char = to_text_string(document.characterAt(position))
else:
position = -1
return position, commas
def _leave_event_hide(self):
""" Hides the tooltip after some time has passed (assuming the cursor is
not over the tooltip).
"""
if (not self._hide_timer.isActive() and
# If Enter events always came after Leave events, we wouldn't need
# this check. But on Mac OS, it sometimes happens the other way
# around when the tooltip is created.
self.app.topLevelAt(QCursor.pos()) != self):
self._hide_timer.start(800, self)
#------ Signal handlers ----------------------------------------------------
def _cursor_position_changed(self):
""" Updates the tip based on user cursor movement.
"""
cursor = self._text_edit.textCursor()
if cursor.position() <= self._start_position:
self.hide()
else:
if not self.hide_timer_on:
position, commas = self._find_parenthesis(self._start_position + 1)
if position != -1:
self.hide()
