如何在 Linux 上散焦（模糊）Python-gi GTK+3 window

Question

我想做什么以及为什么

我想让我的window不聚焦，所以选择了之前聚焦的window。

为什么？我想与之前选择的 window（来自其他程序）进行交互。我目前的计划是：取消 window 的焦点，使用 libxdo 模拟击键，然后再次聚焦 window。

我的 window 可以设置在顶部以帮助避免闪烁。应该够好了。对我来说看起来很简单。但是我无法让它工作。

到目前为止我尝试了什么

用Gtk.Widget.hide()隐藏window，然后再次显示：window闪烁太多，它稍微移动了一些像素到顶部（因为window我猜是经理的固执）。

示例测试代码

当前代码调用 Gtk.Window.set_focus(None) 不起作用。我需要用其他东西替换那条线，让它做我想做的事。

losefocus.py:

import signal
from gi import require_version
require_version('Gtk', '3.0')
from gi.repository import GLib, Gtk, GObject

class LoseFocusHandler:
  def onClick(self, window):
    print "Losing focus yet?"
    window1 = builder.get_object("window1")
    window1.set_focus(None)

if __name__ == "__main__":
  GObject.threads_init()

  builder = Gtk.Builder()
  builder.add_from_file("losefocus.glade")
  builder.connect_signals(LoseFocusHandler())
  window1 = builder.get_object("window1")
  window1.show_all()

  signal.signal(signal.SIGINT, signal.SIG_DFL)
  Gtk.main()

losefocus.glade:

<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated with glade 3.16.1 -->
<interface>
  <requires lib="gtk+" version="3.10"/>
  <object class="GtkWindow" id="window1">
    <property name="can_focus">False</property>
    <property name="window_position">center-always</property>
    <property name="gravity">center</property>
    <child>
      <object class="GtkButton" id="button1">
        <property name="label" translatable="yes">Lose Focus!</property>
        <property name="visible">True</property>
        <property name="can_focus">True</property>
        <property name="receives_default">True</property>
        <property name="relief">half</property>
        <signal name="clicked" handler="onClick" swapped="no"/>
      </object>
    </child>
  </object>
</interface>

Answer 1

一个简单的解决方案是在创建 window 和每个 focus-in-event 时记录之前关注哪个 window，并明确关注 window而不是试图分散活跃的注意力：

import signal
from gi import require_version
require_version('Gtk', '3.0')
from gi.repository import GLib, Gdk, Gtk, GObject

class LoseFocusHandler:
  def onClick(self, window):
    print "Losing focus yet?"
    old_window[0].focus(0)

def focus_handler(gdk_window, event):
    # At this point, our window does not have focus yet, but is
    # about to. This hence works:
    old_window[0] = gdk_window.get_screen().get_active_window()

if __name__ == "__main__":
  GObject.threads_init()

  old_window = [ Gdk.Screen.get_default().get_active_window() ]

  builder = Gtk.Builder()
  builder.add_from_file("losefocus.glade")
  builder.connect_signals(LoseFocusHandler())
  window1 = builder.get_object("window1")
  window1.connect("focus-in-event", focus_handler)
  window1.show_all()

  signal.signal(signal.SIGINT, signal.SIG_DFL)
  Gtk.main()

如何在 Linux 上散焦（模糊）Python-gi GTK+3 window

How to unfocus (blur) Python-gi GTK+3 window on Linux

python

x11

ubuntu

python-2.7

gtk3