Question

我在单独的窗口中显示自定义小部件时遇到问题。单独的窗口不是在窗口中的所有窗口小部件的意义上，但它们都是用自己的窗口装饰单独出现的。我不确定问题会在哪里，但我猜它可能是下面的一个，也许与我如何创建窗口有关。 do_realize在 init 中调用（也出现在下面），我认为当被要求绘制自己时，gtk会调用do_expose_event，但我不是很确定（我对这一切都很新））。我在do_expose_event中放了一个print语句，并且在我创建一个print语句后立即调用它，然后在创建小部件的程序中输入gtk main之前。所有代码都是GPL。

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

而不是在“__ init ”中调用do_realize（没有“”和“init”之间的空格，它加粗了文本），我应该调用queue_draw。我在pygtk irc上得到了帮助。

pygtk自定义小部件显示在单独的窗口中

1 个答案: