tkinter, canvas, get color of image?

[skanemupp]

mapq = PhotoImage(file = 'C:\Users\safta rn\Desktop\elma povic.gif')
w.create_image( 10, 10, image = mapq, anchor = NW)

after doing this is there any possibility of getting the
characteristics of the GIF-picture(or bitmap if i use that)?

it would be very helpfull if i for example could do something like
canvas.getcolor (image, mouseclick.x,mo useclick.y) if u get the point.
get the color of the image where i clicked.

[Bryan Oakley]

sk*******@yahoo .se wrote:

mapq = PhotoImage(file = 'C:\Users\safta rn\Desktop\elma povic.gif')
w.create_image( 10, 10, image = mapq, anchor = NW)

after doing this is there any possibility of getting the
characteristics of the GIF-picture(or bitmap if i use that)?

it would be very helpfull if i for example could do something like
canvas.getcolor (image, mouseclick.x,mo useclick.y) if u get the point.
get the color of the image where i clicked.

The image isn't "painted" on the canvas, so to answer your specific
question, no, you can't get the color of a pixel on the canvas in the
way that you ask.

However, when you click on the canvas you can get the item that was
clicked on and the x/y of the click. From that you can figure out which
pixel of the image is under the cursor. And from that you can query the
image for the color of a specific pixel.

[skanemupp]

On 13 Apr, 19:19, Bryan Oakley <oak...@bardo.c learlight.comwr ote:

skanem...@yahoo .se wrote:

mapq = PhotoImage(file = 'C:\Users\safta rn\Desktop\elma povic.gif')
w.create_image( 10, 10, image = mapq, anchor = NW)

after doing this is there any possibility of getting the
characteristics of the GIF-picture(or bitmap if i use that)?

it would be very helpfull if i for example could do something like
canvas.getcolor (image, mouseclick.x,mo useclick.y) if u get the point.
get the color of the image where i clicked.

The image isn't "painted" on the canvas, so to answer your specific
question, no, you can't get the color of a pixel on the canvas in the
way that you ask.

However, when you click on the canvas you can get the item that was
clicked on and the x/y of the click. From that you can figure out which
pixel of the image is under the cursor. And from that you can query the
image for the color of a specific pixel.

how do i get the item?
http://effbot.org/tkinterbook/canvas...e_image-method

with any of those methods?

when i click the mouse i can get event.object u mean?

[Bryan Oakley]

sk*******@yahoo .se wrote:

On 13 Apr, 19:19, Bryan Oakley <oak...@bardo.c learlight.comwr ote:

>skanem...@yaho o.se wrote:

>>mapq = PhotoImage(file = 'C:\Users\safta rn\Desktop\elma povic.gif')
w.create_imag e(10, 10, image = mapq, anchor = NW)
after doing this is there any possibility of getting the
characteristi cs of the GIF-picture(or bitmap if i use that)?
it would be very helpfull if i for example could do something like
canvas.getcol or(image, mouseclick.x,mo useclick.y) if u get the point.
get the color of the image where i clicked.

The image isn't "painted" on the canvas, so to answer your specific
question, no, you can't get the color of a pixel on the canvas in the
way that you ask.

However, when you click on the canvas you can get the item that was
clicked on and the x/y of the click. From that you can figure out which
pixel of the image is under the cursor. And from that you can query the
image for the color of a specific pixel.

how do i get the item?
http://effbot.org/tkinterbook/canvas...e_image-method

with any of those methods?

when i click the mouse i can get event.object u mean?

You can use find_closest to find the object closest to the x,y of the
event. You can also do find_withtag(tk .CURRENT) which returns the item
under the mouse pointer.

[skanemupp]

On 16 Apr, 00:46, Bryan Oakley <oak...@bardo.c learlight.comwr ote:

skanem...@yahoo .se wrote:

On 13 Apr, 19:19, Bryan Oakley <oak...@bardo.c learlight.comwr ote:

skanem...@yahoo .se wrote:
mapq = PhotoImage(file = 'C:\Users\safta rn\Desktop\elma povic.gif')
w.create_image (10, 10, image = mapq, anchor = NW)
after doing this is there any possibility of getting the
characteristic s of the GIF-picture(or bitmap if i use that)?
it would be very helpfull if i for example could do something like
canvas.getcolo r(image, mouseclick.x,mo useclick.y) if u get the point.
get the color of the image where i clicked.
The image isn't "painted" on the canvas, so to answer your specific
question, no, you can't get the color of a pixel on the canvas in the
way that you ask.

However, when you click on the canvas you can get the item that was
clicked on and the x/y of the click. From that you can figure out which
pixel of the image is under the cursor. And from that you can query the
image for the color of a specific pixel.

how do i get the item?
http://effbot.org/tkinterbook/canvas....create_image-...

with any of those methods?

when i click the mouse i can get event.object u mean?

You can use find_closest to find the object closest to the x,y of the
event. You can also do find_withtag(tk .CURRENT) which returns the item
under the mouse pointer.

Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python25\li b\lib-tk\Tkinter.py", line 1403, in __call__
return self.func(*args )
File "C:\Users\safta rn\Desktop\pyth onkod\mapexperi ments
\mapgetobject.p y", line 17, in callback
undermouse=find _closest(master .CURRENT)
NameError: global name 'find_closest' is not defined
from Tkinter import *

master = Tk()

w = Canvas(master, width=400, height=625)
w.pack(expand = YES, fill = BOTH)

mapq = PhotoImage(file = 'C:\Users\safta rn\Desktop\imag es
\something.gif' )
w.create_image( 30, 30, image = mapq, anchor = NW)

def key(event):
print "pressed", repr(event.char )

def callback(event) :
clobj=event.wid get
## undermouse=find _withtag(master .CURRENT)
undermouse=find _closest(master .CURRENT)
print repr(undermouse )

w.bind("<Key>", key)
w.bind("<Button-1>", callback)
w.pack()

mainloop()