如何从gi.repository导入gtk.gdk

Question

我有这个python代码截取x屏幕截图。

#!/usr/bin/python
import gtk.gdk

w = gtk.gdk.get_default_root_window()
sz = w.get_size()
print "The size of the window is %d x %d" % sz
pb = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,False,8,sz[0],sz[1])
pb = pb.get_from_drawable(w,w.get_colormap(),0,0,0,0,sz[0],sz[1])
if (pb != None):
    pb.save("screenshot.png","png")
    print "Screenshot saved to screenshot.png."
else:
    print "Unable to get the screenshot."

它工作，但我需要from gi.repository import Gdk而不是gtk.gdk from gi.repository import Gdk 。 我尝试过以下方法：

#!/usr/bin/python
from gi.repository import Gtk, Gdk, GdkPixbuf
from gi.repository.GdkPixbuf import Pixbuf

w = Gdk.get_default_root_window()
sz = w.get_size()
print "The size of the window is %d x %d" % sz
pb = Pixbuf(Gdk.COLORSPACE_RGB,False,8,sz[0],sz[1])
pb = pb.get_from_drawable(w,w.get_colormap(),0,0,0,0,sz[0],sz[1])
if (pb != None):
    pb.save("screenshot.png","png")
    print "Screenshot saved to screenshot.png."
else:
    print "Unable to get the screenshot."

但：

Traceback (most recent call last):
  File "./dsd", line 6, in <module>
    sz = w.get_size()
AttributeError: 'gtk.gdk.X11Window' object has no attribute 'get_size'

有没有办法为这个脚本使用完全gi.repository？ 谢谢

编辑：我解决了AttributeError的问题：'gtk.gdk.X11Window'对象没有使用sz = w.get_geometry（）而不是get_size属性'get_size'。 新代码：

#!/usr/bin/python
from gi.repository import Gtk, Gdk, GdkPixbuf 
from gi.repository.GdkPixbuf import Pixbuf

w = Gdk.get_default_root_window()
sz = w.get_geometry()
#print "The size of the window is %d x %d" % sz
pb = GdkPixbuf.Pixbuf.new(GdkPixbuf.Colorspace.RGB,False,8,sz[2],sz[3])
pb = pb.get_from_drawable(w,w.get_colormap(),0,0,0,0,sz[2],sz[3])
if (pb != None):
    pb.save("screenshot.png","png")
    print "Screenshot saved to screenshot.png."
else:
    print "Unable to get the screenshot."

但是这个代码还有另一个问题：

Traceback (most recent call last):
  File "./dsd", line 9, in <module>
    pb = pb.get_from_drawable(w,w.get_colormap(),0,0,0,0,sz[2],sz[3])
AttributeError: 'Pixbuf' object has no attribute 'get_from_drawable'

我如何使用Pixbuf的“get_from_drawable”属性？ 再次感谢！

Answer 1

也许你想要get_width（）和get_height（） 。

根据他们的文档，不推荐使用get_size（） ： https ： //developer.gnome.org/gdk/stable/gdk-Drawing-Primitives.html#gdk-drawable-get-size

Answer 2

我知道这个答案迟到了，但迟到总比没有好。

Gdk3 +实际上简化了从GdkWindow中检索Pixbuf的过程。 因此，您的代码应如下所示：

#!/usr/bin/python
from gi.repository import Gdk, GdkPixbuf

w = Gdk.get_default_root_window()
sz = w.get_geometry()[2:4]
#print "The size of the window is %d x %d" % sz
pb = Gdk.pixbuf_get_from_window(w, 0, 0, sz[0], sz[1])
if (pb != None):
    pb.savev("screenshot.png","png", [], [])
    print "Screenshot saved to screenshot.png."
else:
    print "Unable to get the screenshot."