Hi all.
I managed to procure the following code from
http://rosettacode.org/wiki/Color_of_a_screen_pixel, that retrieves
the pixel color values.
This works in gtk.
#######################################################
import gtk
import gobject
def get_pixel_colour(i_x, i_y):
o_gdk_pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, False, 8, 1, 1)
o_gdk_pixbuf.get_from_drawable(gtk.gdk.get_default_root_window(),
gtk.gdk.colormap_get_system(), i_x, i_y, 0, 0, 1, 1)
print tuple(o_gdk_pixbuf.get_pixels_array().tolist()[0][0])
def f():
for i in range(0, 50):
get_pixel_colour(5, i)
win = gtk.Window()
win.show()
gobject.timeout_add(5000, f)
gtk.main()
#######################################################
Now, as the next thing, I would require the way to "set" color in a
pixel, given its x- and y-coordinates.
Any ideas please? :)
On Sat, Jul 6, 2013 at 6:36 PM, Ajay Garg <[email protected]> wrote:
> Hi all.
>
> How can we get the color of each pixel on the "current screen"
> (possibly beginning from
> http://www.pygtk.org/docs/pygtk/class-gdkscreen.html)?
>
> The use-case is as follows ::
>
> * Let's say, I compare two rows of pixels on the current screen.
> * The first row is "all white".
> * The second row is interspersed with "black and white".
> * For every such "black and white" row, replace it with an "all white"
> row.
>
>
>
> I am a coder myself, so all I need are some pointers :)
>
> Looking forward to some help :)
>
>
> Thanks and Regards,
> Ajay
Thanks and Regards,
Ajay
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