Re: scrollbar dependencies
ok, we must redefine each canvas scroll individually ... but what a () strange language... !! -- http://mail.python.org/mailman/listinfo/python-list
Re: scrollbar dependencies
On 24 Mar 2005 03:24:34 -0800, Marion <[EMAIL PROTECTED]> wrote:
Next mystery :
a picture drawn in the canvas c1 is scrollable.
a picture-containing canvas "grided" in the canvas c1 is not.
so why ???
Marion
---
[snip]
#---#
# this is not ! :
#---#
canvas=Canvas(self.c1,background="WHITE")
image =Image.new("RGB",(100,100))
dessin = ImageDraw.Draw(image)
dessin.rectangle([(10,10),(50,50)],fill="rgb(255,0,0)")
photo=ImageTk.PhotoImage(image)
item = canvas.create_image(0,0,anchor=NW,image=photo)
canvas.grid()
You don't want to do that. Canvases are not meant to be containers where
you can pack or grid items. They strangely accept it, but it will never do what
you want. If you want to pack or grid items in a container, use a Frame. If you
want to include a widget in a Canvas, use a canvas window:
c1 = Canvas(root)
c1.pack()
c2 = Canvas(c1, bd=2, relief=SUNKEN, width=50, height=50)
c1.create_window(20, 20, window=c2, anchor=NW)
Canvas windows are scollable; widgets packed or gridded in Canvases are
not. So this really seems to be your problem here.
HTH
--
python -c 'print "".join([chr(154 - ord(c)) for c in
"U(17zX(%,5.z^5(17l8(%,5.Z*(93-965$l7+-"])'
--
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Re: scrollbar dependencies
Next mystery :
a picture drawn in the canvas c1 is scrollable.
a picture-containing canvas "grided" in the canvas c1 is not.
so why ???
Marion
---
from tkinter import *
from PIL import *
class Main:
def __init__(self):
## Main window
self.root = Tk()
self.root.grid_rowconfigure(0, weight=1)
self.root.grid_rowconfigure(1, weight=1)
self.root.grid_columnconfigure(0, weight=1)
## datas :
self.PIC=[]
self.ANN=[]
## First canvas (picture)
self.c1 = Canvas(
self.root,
width=500,
height=100,
bd=2,
relief=SUNKEN,
scrollregion=(0, 0, 100, 100))
self.c1.grid(
row=0,rowspan=2,
column=1,
sticky='nswe')
#---#
# this is scrollable :
#---#
image =Image.new("RGB",(100,100))
dessin = ImageDraw.Draw(image)
dessin.rectangle([(10,10),(50,50)],fill="rgb(255,0,0)")
photo=ImageTk.PhotoImage(image)
item = self.c1.create_image(0,0,anchor=NW,image=photo)
#---#
# this is not ! :
#---#
canvas=Canvas(self.c1,background="WHITE")
image =Image.new("RGB",(100,100))
dessin = ImageDraw.Draw(image)
dessin.rectangle([(10,10),(50,50)],fill="rgb(255,0,0)")
photo=ImageTk.PhotoImage(image)
item = canvas.create_image(0,0,anchor=NW,image=photo)
canvas.grid()
## Second canvas (annot)
c2 = Canvas(
self.root,
width=500,
height=100,
bd=2,
relief=SUNKEN,
scrollregion=(0, 0, 1000, 1000))
c2.grid(
row=2,rowspan=2,
column=1,
sticky='nswe')
## Special function scroll both canvases horizontally
def xscrollboth(a,*args):
self.c1.xview(a,*args)
c2.xview(a,*args)
## Horizontal scrollbar for both canvases
hScroll = Scrollbar(self.root, orient=HORIZONTAL, command=xscrollboth)
hScroll.grid(
row=4,rowspan=1,
column=1,
sticky='we')
## Vertical scrollbars
vScroll1 = Scrollbar(orient=VERTICAL, command=self.c1.yview)
vScroll1.grid(
row=0,rowspan=2,
column=2,
sticky='ns')
self.c1.config(yscrollcommand=vScroll1.set,xscrollcommand=hScroll.set)
vScroll2 = Scrollbar(orient=VERTICAL, command=c2.yview)
vScroll2.grid(
row=2,rowspan=2,
column=2,
sticky='ns')
c2.config(yscrollcommand=vScroll2.set,xscrollcommand=hScroll.set)
---
--
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Re: scrollbar dependencies
Thanks a lot, Eric Brunel. Harlin, if it's still actual (don't think so, but whoever...) here is a simple code that works. --- from Tkinter import * ## Main window root = Tk() root.grid_rowconfigure(0, weight=1) root.grid_rowconfigure(1, weight=1) root.grid_columnconfigure(0, weight=1) ## First canvas c1 = Canvas(root, width=200, height=100, bd=2, relief=SUNKEN, scrollregion=(0, 0, 500, 500)) c1.grid(row=0, column=0, sticky='nswe') ## Second canvas c2 = Canvas(root, width=200, height=100, bd=2, relief=SUNKEN, scrollregion=(0, 0, 500, 500)) c2.grid(row=1, column=0, sticky='nswe') ## Special function scroll both canvases horizontally def xscrollboth(self,*args): c1.xview(self,*args) c2.xview(self,*args) ## Horizontal scrollbar for both canvases hScroll = Scrollbar(root, orient=HORIZONTAL, command=xscrollboth) hScroll.grid(row=2, column=0, sticky='we') ## Vertical scrollbars vScroll1 = Scrollbar(orient=VERTICAL, command=c1.yview) vScroll1.grid(row=0, column=1, sticky='ns') c1.config(yscrollcommand=vScroll1.set,xscrollcommand=hScroll.set) vScroll2 = Scrollbar(orient=VERTICAL, command=c2.yview) vScroll2.grid(row=1, column=1, sticky='ns') c2.config(yscrollcommand=vScroll2.set,xscrollcommand=hScroll.set) root.mainloop() --- "Eric Brunel" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>... > On 3 Mar 2005 02:38:59 -0800, Harlin Seritt <[EMAIL PROTECTED]> wrote: > > > Pardon a question I should already know the answer to, but what are the > > *args in the: > > > > def xscrollboth(*args): > >c1.xview(*args) > >c2.xview(*args) > > > > Thanks, > > > > Harlin > > If your question is about the syntax, it's just the way of passing any number > of arguments to a function as explained in: > http://docs.python.org/tut/node6.html#SECTION00673 > > If your question is about what will actually be passed in these arguments, > the answer is simply: I don't know, and I don't care. That's why I used a > *args: I just want to pass to the c1.xview and c2.xview methods exactly what > was passed to my xscrollboth function. Since Python allows me to just pass > the list of arguments unchanged, I happily do it. -- http://mail.python.org/mailman/listinfo/python-list
Re: scrollbar dependencies
On 3 Mar 2005 02:38:59 -0800, Harlin Seritt <[EMAIL PROTECTED]> wrote: Pardon a question I should already know the answer to, but what are the *args in the: def xscrollboth(*args): c1.xview(*args) c2.xview(*args) Thanks, Harlin If your question is about the syntax, it's just the way of passing any number of arguments to a function as explained in: http://docs.python.org/tut/node6.html#SECTION00673 If your question is about what will actually be passed in these arguments, the answer is simply: I don't know, and I don't care. That's why I used a *args: I just want to pass to the c1.xview and c2.xview methods exactly what was passed to my xscrollboth function. Since Python allows me to just pass the list of arguments unchanged, I happily do it. -- python -c 'print "".join([chr(154 - ord(c)) for c in "U(17zX(%,5.z^5(17l8(%,5.Z*(93-965$l7+-"])' -- http://mail.python.org/mailman/listinfo/python-list
Re: scrollbar dependencies
Pardon a question I should already know the answer to, but what are the *args in the: def xscrollboth(*args): c1.xview(*args) c2.xview(*args) Thanks, Harlin -- http://mail.python.org/mailman/listinfo/python-list
Re: scrollbar dependencies
On 3 Mar 2005 01:06:48 -0800, Marion <[EMAIL PROTECTED]> wrote: Hello. I am using Tkinter and Pmw. I would like to build 2 canvases/frames that are scrollable together horizontally, and independently vertically (so, the vertical scrollbars should not be moved by the horizontal one). So I built a Pmw.ScrolledFrame() containing the 2 canvases, horizontally scrollable. I'd not go that way: a Pmw.ScrolledFrame is not supposed to be used this way, and you may have great troubles making it work as you want... [snip] Is this possible or not ? If not, does somebody allready did that another way ? Here is a solution using only pure-Tkinter: --DualCanvas.py-- from Tkinter import * ## Main window root = Tk() root.grid_rowconfigure(0, weight=1) root.grid_rowconfigure(1, weight=1) root.grid_columnconfigure(0, weight=1) ## First canvas c1 = Canvas(root, width=200, height=100, bd=2, relief=SUNKEN, scrollregion=(0, 0, 500, 500)) c1.grid(row=0, column=0, sticky='nswe') ## Second canvas c2 = Canvas(root, width=200, height=100, bd=2, relief=SUNKEN, scrollregion=(0, 0, 500, 500)) c2.grid(row=1, column=0, sticky='nswe') ## Special function scroll both canvases horizontally def xscrollboth(*args): c1.xview(*args) c2.xview(*args) ## Horizontal scrollbar for both canvases hScroll = Scrollbar(root, orient=HORIZONTAL, command=xscrollboth) hScroll.grid(row=2, column=0, sticky='we') ## Vertical scrollbars vScroll1 = Scrollbar(orient=VERTICAL, command=c1.yview) vScroll1.grid(row=0, column=1, sticky='ns') vScroll2 = Scrollbar(orient=VERTICAL, command=c2.yview) vScroll2.grid(row=1, column=1, sticky='ns') ## Associate scrollbars to canvases c1.configure(xscrollcommand=hScroll.set, yscrollcommand=vScroll1.set) c2.configure(xscrollcommand=hScroll.set, yscrollcommand=vScroll2.set) ## Put a few things in canvases so that we see what's going on c1.create_oval(80, 80, 120, 120, fill='red') c1.create_oval(380, 80, 420, 120, fill='red') c1.create_oval(80, 380, 120, 420, fill='red') c1.create_oval(380, 380, 420, 420, fill='red') c2.create_oval(80, 80, 120, 120, fill='blue') c2.create_oval(380, 80, 420, 120, fill='blue') c2.create_oval(80, 380, 120, 420, fill='blue') c2.create_oval(380, 380, 420, 420, fill='blue') ## Go! root.mainloop() - The "trick" is simply to create a function accepting the same arguments as the xview methods on canvases and forward these arguments to the xview methods of both canvases. You then pass this function to the command option of both scrollbars, and voilà. The link canvas -> scrollbar is done the usual way. HTH -- python -c 'print "".join([chr(154 - ord(c)) for c in "U(17zX(%,5.z^5(17l8(%,5.Z*(93-965$l7+-"])' -- http://mail.python.org/mailman/listinfo/python-list
