这是绘制以前计算并保存在“日期”列表中的某些日期的单元格的函数,函数工作正常,但我想在单击QDateEdit时调用该函数(当显示弹出日历时)
def init_gui(self):
# Set signals of widgets
self.dockwidget.date_to.calendarWidget().clicked.connect(self.paint_cell) # !! the signal I'm looking for
def paint_cell(self):
#QDateEdit / QCalendarWidget Highlight Dates
keyword_format = QTextCharFormat()
keyword_format.setBackground(Qt.gray)
for date in dates:
self.dockwidget.date_from.calendarWidget().setDateTextFormat(QDate.fromString(date,"yyyy-MM-dd") ,keyword_format)
self.dockwidget.date_from()#QDateEdit
self.dockwidget.date_from.calendarWidget()#QCalendarWidget
我知道有信号,但是当点击QDate时它们都在工作:self.dockwidget.date_to.calendarWidget()。activated.connect(self.paint_cell)self.dockwidget.date_to.calendarWidget()。clicked.connect(self .paint_cell)self.dockwidget.date_to.calendarWidget()。selectionChanged.connect(self.paint_cell)
但是当显示弹出窗口时,我必须在这些信号之前绘制单元格。
有谁知道那个信号是什么?
注意:代码将成为QGis插件的一部分
如果要在显示calendarWidget之前设置,则不必使用任何信号,只需在构造函数中调用paint_cell即可。
# constructor
self.paint_cell()
self.dockwidget.date_to.calendarWidget().activated.connect(self.paint_cell)
# ...
更新:
这种情况没有默认信号,所以相信它,您可以使用事件过滤器来监视Event.Show事件,然后发出信号。
from PyQt5 import QtCore, QtWidgets
class DateEdit(QtWidgets.QDateEdit):
popupSignal = QtCore.pyqtSignal()
def __init__(self, parent=None):
super(DateEdit, self).__init__(parent)
self.setCalendarPopup(True)
self.calendarWidget().installEventFilter(self)
def eventFilter(self, obj, event):
if self.calendarWidget() is obj and event.type() == QtCore.QEvent.Show:
self.popupSignal.emit()
return super(DateEdit, self).eventFilter(obj, event)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = DateEdit()
w.popupSignal.connect(lambda: print("popup"))
w.show()
sys.exit(app.exec_())
来自@eyllanesc帖子的提示,我现在的工作代码是:
class Project(QDockWidget):
""" QGIS Plugin Implementation. """
popupSignal = QtCore.pyqtSignal()
def __init__(self, iface):
""" Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgisInterface
"""
QDockWidget.__init__(self)
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
...
def eventFilter(self, obj, event):
if self.dockwidget.date_to.calendarWidget() is obj and event.type() == QtCore.QEvent.Show:
self.popupSignal.emit()
return super(Project, self).eventFilter(obj, event)
....
def run(self):
""" Run method that loads and starts the plugin """
self.dockwidget.date_to.calendarWidget().installEventFilter(self)
self.popupSignal.connect(self.paint_cell)
def paint_cell(self):
#QDateEdit / QCalendarWidget Highlight Dates
keyword_format = QTextCharFormat()
keyword_format.setBackground(Qt.gray)
for date in dates:
self.dockwidget.date_from.calendarWidget().setDateTextFormat(QDate.fromString(date, "yyyy-MM-dd"), keyword_format)