python - pygtk自定义小部件显示在单独的窗口中

Question

我在单独的窗口中显示自定义小部件时遇到问题。单独的窗口并不是所有小部件都在一个窗口中的意义上，而是它们都单独出现并带有自己的窗口装饰。我不确定问题出在哪里，但我猜测可能是以下之一，可能与我创建窗口的方式有关。 do_realize 在 init 中被调用(也出现在下面)，我认为 do_expose_event 在 gtk 被要求绘制自身时被调用，但我不太确定(我对这一切都很陌生) )。我在 do_expose_event 中放置了一个打印语句，并且在我在制作小部件的程序中进入 gtk main 之前放置的每个打印语句之后调用它。所有代码都是 GPL 的。

如果需要任何其他代码，可根据要求提供。

def do_realize(self):
    """Makes a window on which we draw"""

    #set a flag to say we are realised
    self.set_flags(self.flags() | gtk.REALIZED)

    #make a gdk window to draw on
    self.window = gtk.gdk.Window(self.get_parent_window(), width=self.allocation.width,
                    height=self.allocation.height, window_type=gtk.gdk.WINDOW_CHILD,
                    wclass=gtk.gdk.INPUT_OUTPUT, event_mask=self.get_events() | gtk.gdk.EXPOSURE_MASK)

    #associate the window with the widget
    self.window.set_user_data(self)

    #attach a style
    self.style.attach(self.window)

    #set the default background colour to whatever the theme says, and the state
    self.style.set_background(self.window, gtk.STATE_NORMAL)
    self.window.move_resize(*self.allocation)

def do_expose_event(self, event):
    """Called when the widget is asked to draw itself"""
    #put the allocation in some variables
    x, y, w, h = self.allocation
    cr = self.window.cairo_create()


    #if height is greater than width
    if (h > w):
        scale = h/float(BASE_SIZE)
    else:
        scale = w/float(BASE_SIZE)

    #set the scale
    cr.scale(scale,scale)

    #put in the colour
    self.draw_background_color(cr)

    #draw the highlight if necessary
    if self.is_focus():
        self.draw_highlight_box(cr)

    self.draw_normal_box(cr)
    self.draw_text(cr)
    if self.draw_boxes and self.is_focus():
        self.draw_note_area_highlight_box(cr)

def __init__(self, upper=9, text=''):
    """initialise it"""
    gtk.Widget.__init__(self)       #init the super class
    self.upper = upper
    self.font = self.style.font_desc
    self.font.set_size(pango.SCALE*13)
    self.note_font = self.font.copy()
    self.note_font.set_size(pango.SCALE*6)

    #set properties-can focus and grab all events
    self.set_property('can-focus',True)
    self.set_property('events',gtk.gdk.ALL_EVENTS_MASK)

    #connect the events to functions
    self.connect('button-press-event',self.button_press)        #box is clicked on
    self.connect('key-release-event',self.key_press)            #release of key when inputting
    self.connect('enter-notify-event',self.pointer_enter)       #pointer enters
    self.connect('leave-notify-event',self.pointer_leave)       #pointer leaves
    self.connect('focus-in-event',self.focus_in)                #goes into focus
    self.connect('focus-out-event',self.focus_out)              #goes out of focus
    self.connect('motion-notify-event',self.motion_notify)      #poniter is in the window

    #debugging info
    #print type(self)

    self.set_text(text)
    self.do_realize()

Answer 1

我应该调用 queue_draw，而不是在 __init__ 中调用 do_realize。我在 pygtk irc 上获得了帮助。