📜  PyGTK-日历类

📅  最后修改于: 2020-11-08 08:04:14             🧑  作者: Mango


PyGTK工具箱中的Calendar小部件显示一个简单的日历,一次显示一个月。默认情况下会显示用于更改月份和年份的导航控件。显示选项可以适当配置。

month属性的值介于0到11之间,而date属性的值介于1到31之间。

有一个简单的构造函数来创建gtk.Calendar对象-

cal = gtk.Calendar()

默认显示样式显示当前月份和年份以及日期名称。

gtk.Calendar类具有以下方法-

  • Calendar.select_month(mm,yy)-将日历显示更改为指定的mmyy

  • Calendar.select_day(dd)—当日历中的指定dd的值介于1到31之间时,它将选择该日期。如果dd为0,则删除当前的日期。

  • Calendar.display_options()-将日历显示选项设置为flags指定的值。可能的显示选项是以下各项的组合:

gtk.CALENDAR_SHOW_HEADING Specifies that the month and year should be displayed.
gtk.CALENDAR_SHOW_DAY_NAMES Specifies that three letter day descriptions should be present.
gtk.CALENDAR_NO_MONTH_CHANGE Prevents the user from switching months with the calendar.
gtk.CALENDAR_SHOW_WEEK_NUMBERS Displays each week numbers of the current year, down the left side of the calendar.
gtk.CALENDAR_WEEK_START_MONDAY Starts the calendar week on Monday, instead of the default Sunday.
  • Calendar.get_date()—这将日历的当前年,月和选定的天数检索为元组(年,月,日)。

gtk.Calendar小部件发出以下信号-

day-selected This is emitted when a day is selected either by the user or programmatically.
month-changed This is emitted when the calendar month is changed programmatically or by the user.
next-month This is emitted when the user clicks the “next-month” navigation control in the calendar header.
next-year This is emitted when the user clicks the “next-year” navigation control in the calendar header.
prev-month This is emitted when the user clicks the “prev-month” navigation control in the calendar header.
prev-year This is emitted when the user clicks the “prev-year” navigation control in the calendar header.

在下面的示例中,在顶层窗口中放置了一个gtk.Calendar控件和四个按钮。

单击“标题”按钮时,日历的显示选项设置为SHOW_HEADING-

def heading(self, widget):
   self.cal.set_display_options(gtk.CALENDAR_SHOW_HEADING)

当用户单击“日期名称”按钮时,回调将显示选项设置为SHOW_DAY_NAMES-

def dayname(self, widget):
self.cal.set_display_options(gtk.CALENDAR_SHOW_DAY_NAMES)

当按下“两个”按钮时,两个显示选项均被启用。首先,将显示选项的所有标志设置为0,以将其删除。

self.cal.set_display_options(0)

“设置”按钮弹出一个消息框,显示当前标记的日期。

tp = self.cal.get_date()
str1 = str(tp[0])
str2 = str(tp[1]+1)
str3 = str(tp[2])
label = gtk.Label("Date selected:"+str3+"-"+str2+"-"+str1)
dialog.vbox.add(label)
label.show()

观察以下代码-

import gtk

class PyApp(gtk.Window):
   
   def __init__(self):
      super(PyApp, self).__init__()
      self.set_title("Calendar Demo")
      self.set_size_request(300, 200)
      self.set_position(gtk.WIN_POS_CENTER)
        
      vbox = gtk.VBox(False, 5)
      self.cal = gtk.Calendar()
      halign1 = gtk.Alignment(0.5, 0.5, 0, 0)
      halign1.add(self.cal)
        
      self.cal.set_display_options(0)
      valign = gtk.Alignment(0, 1, 0, 0)
      vbox.pack_start(halign1)
        
      self.btn1 = gtk.Button("set")
      self.btn2 = gtk.Button("heading")
      self.btn3 = gtk.Button("day name")
      self.btn4 = gtk.Button("Both")
        
      hbox = gtk.HBox(True, 3)
      hbox.add(self.btn1)
      hbox.add(self.btn2)
      hbox.add(self.btn3)
      hbox.add(self.btn4)
        
      halign = gtk.Alignment(0.5, 0.5, 0, 0)
      halign.add(hbox)
        
      vbox.pack_start(halign, False, True, 10)
      self.add(vbox)
        
      self.btn1.connect("clicked", self.selectdate)
      self.btn2.connect("clicked", self.heading)
      self.btn3.connect("clicked", self.dayname)
      self.btn4.connect("clicked", self.bothflags)
        
      self.connect("destroy", gtk.main_quit)
      self.show_all()
        
   def heading(self, widget):
      self.cal.set_display_options(gtk.CALENDAR_SHOW_HEADING)
        
   def dayname(self, widget):
      self.cal.set_display_options(gtk.CALENDAR_SHOW_DAY_NAMES)
        
   def bothflags(self, widget):
      self.cal.set_display_options(gtk.CALENDAR_SHOW_HEADING|gtk.CALENDAR_SHOW_DAY_NAMES)
   def selectdate(self, widget):
      tp = self.cal.get_date()
      dialog = gtk.Dialog("My dialog",
      self,
      gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
      (gtk.STOCK_OK, gtk.RESPONSE_ACCEPT))
        
      str1 = str(tp[0])
      str2 = str(tp[1]+1)
      str3 = str(tp[2])
        
      label = gtk.Label("Date selected:"+str3+"-"+str2+"-"+str1)
      dialog.vbox.add(label)
      label.show()
      res = dialog.run()
      dialog.destroy()

PyApp()
gtk.main()

上面的代码将生成以下输出-

日历演示