tkinter, canvas, get color of image?
Bryan Oakley
oakley at bardo.clearlight.com
Sun Apr 13 13:19:22 EDT 2008
skanemupp at yahoo.se wrote:
> mapq = PhotoImage(file = 'C:\Users\saftarn\Desktop\elmapovic.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,mouseclick.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.
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