问题
I have a working program in python 2.7 that I am trying to convert to python 3.3.
The working version is:
#!/usr/bin/python2
import gtk.gdk
import sys
def PixelAt(x, y):
w = gtk.gdk.get_default_root_window()
pb = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, False, 8, 1, 1)
cm = w.get_colormap()
pb = pb.get_from_drawable(w, cm, x, y, 0, 0, 1, 1)
return pb.pixel_array[0][0]
print(PixelAt(int(sys.argv[1]), int(sys.argv[2])))
The partly converted one is:
#!/usr/bin/python3
from gi.repository import Gtk, Gdk, GdkPixbuf
import sys
def PixelAt(x, y):
w = Gdk.get_default_root_window()
pb = GdkPixbuf.Pixbuf.new(GdkPixbuf.Colorspace.RGB, False, 8, 1, 1)
cm = w.get_colormap() # What goes here?
pb = pb.get_from_drawable(w, cm, x, y, 0, 0, 1, 1) # What goes here?
return pb.pixel_array[0][0]
print(PixelAt(int(sys.argv[1]), int(sys.argv[2])))
What do I need to finish converting?
[EDIT]
Thanks to @jku here is my complete python3 color picker:
#!/usr/bin/python3
# Print RGB color values of screen pixel at location x, y
from gi.repository import Gdk
import sys
def PixelAt(x, y):
w = Gdk.get_default_root_window()
pb = Gdk.pixbuf_get_from_window(w, x, y, 1, 1)
return pb.get_pixels()
print(tuple(PixelAt(int(sys.argv[1]), int(sys.argv[2]))))
[END-EDIT]
回答1:
w = Gdk.get_default_root_window()
pb = Gdk.pixbuf_get_from_window(w, x, y, 1 ,1)
that should do it. Note that pixbuf_get_from_window()
can return None just like the Gdk2 function you used: you must check the return value before using it.
来源:https://stackoverflow.com/questions/27395968/get-screen-pixel-color-linux-python3