如何在Linux上取消焦点（模糊）Python-gi GTK+3窗口

Question

如何在Linux上取消焦点（模糊）Python-gi GTK+3窗口

pythonpython-2.7ubuntux11gtk3

7

我想做什么以及原因

我希望我的窗口失去焦点，所以先前聚焦的窗口被选中。

为什么？我想要与先前从其他程序选择的窗口进行交互。我的当前计划是：使我的窗口失去焦点，使用libxdo模拟按键，然后再次聚焦我的窗口。

我的窗口可以设置在顶部，以帮助避免闪烁。应该足够简单。但是我无法使它工作。

我迄今为止尝试过的内容

使用Gtk.Widget.hide()隐藏窗口，然后再次显示它：该窗口会闪烁太多，并且稍微向上移动了几个像素（可能是由于窗口管理器的顽固性）。

示例测试代码

当前代码调用Gtk.Window.set_focus(None)，无法正常工作。我需要将那行替换为其他可以实现我想要的功能的代码。

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>

- Jorge Suárez de Lis

1个回答

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Phillip · Accepted Answer

一个简单的解决方案是在创建窗口时记录哪个窗口拥有焦点，并在每次 focus-in-event 事件发生时，明确地将焦点放在该窗口上，而不是尝试取消激活的窗口：

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()