[Tkinter-discuss] Tkinter-discuss Digest, Vol 76, Issue 9

[zizou afix]

Hi Michael,
I understand your clear explanations and now it works.
thanks a lot

ziz

2010/6/20 <tkinter-discuss-request at python.org>

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> Today's Topics:
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>   1. adjust the size of two canvas when I resize (zizou afix)
>   2. Re: adjust the size of two canvas when I resize (Michael Lange)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 20 Jun 2010 04:06:45 +0200
> From: zizou afix <ziz.root at gmail.com>
> To: tkinter-discuss at python.org
> Subject: [Tkinter-discuss] adjust the size of two canvas when I resize
> Message-ID:
>        <AANLkTil-63Iznw8yBv-pyxWb_ttVPA36tyi2aWZuv5Nh at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi,
> i'm a new user of tkinter,
> I would like to adjust my canevas to the main window when a resize it.
> i've just find this on the web :
> http://infohost.nmt.edu/tcc/help/pubs/tkinter/layout-mgt.html#root-resize
> but in my case that don't work
>
> this is my code :
> 2 canvas and 2 scrollbars
> it runs but it does not fit at the window
> if someone can help me, very very thanks
>
>
> #####################################################################################
> from Tkinter import *
>
> class Application(Frame):
>    def __init__(self, master=None):
>        Frame.__init__(self, master)
>        self.grid(sticky=N+S+E+W)
>        self.canCompose()
>
>    def canCompose(self):
>        top=self.winfo_toplevel()
>        top.rowconfigure(0, weight=1)
>        top.columnconfigure(1, weight=1)
>        self.rowconfigure(0, weight=1)
>        self.columnconfigure(1, weight=1)
>
>        self.canCompose = Canvas(self, width = 800, height = 400 ,bg =
> 'red', scrollregion=(0,0,100,400))
>        self.canComposeTitle = Canvas(self, width = 100, height =400 ,bg =
> 'blue', scrollregion=(0,0,0,400))
>
>        self.canComposeTitle.grid(row=0, column=0,
>            sticky=N+S+E+W)
>        self.canCompose.grid(row=0, column=1,
>            sticky=N+S+E+W)
>
>        self.scrollCompose_y = Scrollbar(self, orient='vertical')
>        self.scrollCompose_y.config(command = self.twoScroll)
>        self.scrollCompose_x = Scrollbar(self, orient='horizontal',
>                command=self.canCompose.xview)
>
>        self.canComposeTitle['yscrollcommand'] = self.scrollCompose_y.set
>        self.canCompose['yscrollcommand'] = self.scrollCompose_y.set
>        self.canCompose['xscrollcommand'] = self.scrollCompose_x.set
>        self.scrollCompose_y.grid(row=0, column=2,sticky=N+S)
>        self.scrollCompose_x.grid(row=1, column=0, columnspan=2, sticky=E+W)
>
>    def twoScroll(self, *args):
>        """Send y scroll *args to the two canvas"""
>        self.canCompose.yview(*args)
>        self.canComposeTitle.yview(*args)
>        print args
>
> app = Application()
> app.master.title("Sample application")
> app.mainloop()
>
> #####################################################################################
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> ------------------------------
>
> Message: 2
> Date: Sun, 20 Jun 2010 11:25:36 +0200
> From: Michael Lange <klappnase at web.de>
> To: tkinter-discuss at python.org
> Subject: Re: [Tkinter-discuss] adjust the size of two canvas when I
>        resize
> Message-ID: <20100620112536.573c74bb.klappnase at web.de>
> Content-Type: text/plain; charset=US-ASCII
>
> Hi Zizou,
>
> On Sun, 20 Jun 2010 04:06:45 +0200
> zizou afix <ziz.root at gmail.com> wrote:
>
> > Hi,
> > i'm a new user of tkinter,
> > I would like to adjust my canevas to the main window when a resize it.
> > i've just find this on the web :
> >
> http://infohost.nmt.edu/tcc/help/pubs/tkinter/layout-mgt.html#root-resize
> > but in my case that don't work
> >
> > this is my code :
> > 2 canvas and 2 scrollbars
> > it runs but it does not fit at the window
> > if someone can help me, very very thanks
> >
> >
> #####################################################################################
> > from Tkinter import *
> >
> > class Application(Frame):
> >     def __init__(self, master=None):
>
> First we should find out which widget(s) actually does not expand when
> the window is resized. To do so it may be helpful to change the
> background color of the Frame surrounding the two Canvases :
>
> >         Frame.__init__(self, master, bg='yellow')
> >         self.grid(sticky=N+S+E+W)
> >         self.canCompose()
>
> When you run this slightly modified example you will see that it is
> actually the Frame that does not get resized, not the Canvases.
> When I change the line
>
>        self.grid(sticky=N+S+E+W)
>
> into
>
>        self.pack(fill='both', expand=1)
>
> the Frame will expand as expected when the window is resized. So we see
> that the self.grid(...) command is the problematic part. In fact in
> your example the Frame expands vertically, but not horizontally, but
> why? The explanation is a few lines below:
>
> >
> >     def canCompose(self):
> >         top=self.winfo_toplevel()
> >         top.rowconfigure(0, weight=1)
> >         top.columnconfigure(1, weight=1)
>
> Here you tell the application window to expand row 0 and column 1 when
> the window is resized, but a few lines above you put your Frame into
> row 0 and column 0 (yet not explicitely, but if you do not define grid
> cells, the grid manager will begin automagically with row 0 and col. 0).
> So the solution is to change either
>
>    self.grid(sticky=N+S+E+W)   into
>    self.grid(row=0, column=1, sticky=N +S +E +W)
> or
>    top.columnconfigure(1, weight=1)   into
>    top.columnconfigure(0, weight=1)
>
> I hope this helps
>
> Michael
>
>
>
>
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>
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> End of Tkinter-discuss Digest, Vol 76, Issue 9
> **********************************************
>
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