Mailman 3 August 2015 - Tkinter-discuss

Control position of Tkinter common dialogs?
by python＠bdurham.com Dec. 9, 2016

Dec. 9, 2016

Python 2.7 under Windows: How can we control the position of Tkinter's common dialogs? Here's what we've discovered: * Certain common dialogs always open up relative to their parent window * Certain common dialogs always open up centered on the user's desktop * All common dialogs appear to ignore the optional parent= parameter Questions: * How can we force a dialog to open up relative to its parent window? * How can we force a dialog to open up centered on the user's desktop? Background: import tkColorChooser as colorchooser import tkFileDialog as filedialog import tkMessageBox as messagebox # always open up relative to parent windows fileOpen = filedialog.askopenfilename() fileOpens = filedialog.askopenfilenames() fileSaveAs = filedialog.asksaveasfilename() color = colorchooser.askcolor() # always open up centered on desktop folderOpen = filedialog.askdirectory() messagebox.askquestion() Malcolm

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Re: [Tkinter-discuss] tkinter file dialog pattern matching (fwd)
by Laura Creighton Aug. 24, 2015

Aug. 24, 2015

oooh. Seems that there is an undocumented feature we can use! Laura ------- Forwarded Message Return-Path: <tkinter-discuss-bounces+lac=openend.se(a)python.org> Date: Sun, 23 Aug 2015 12:40:02 +0200 From: Michael Lange <klappnase(a)web.de> To: tkinter-discuss(a)python.org Message-Id: <20150823124002.7391f37e21f9b5cfaa91770f(a)web.de> In-Reply-To: <20150822210424.321b826f@lenny> References: <201508221103.t7MB3kdx010426(a)fido.openend.se> Hi, On Sat, 22 Aug 2015 21:04:24 +0100 Pawel Mosakowski <pawel(a)mosakowski.net> wrote: > Hi, > > I've found this little gem in the Tk docs > https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13 > From what I see "file patterns" in the file dialog are not "regex > patterns" and do not support special characters. Only things that work > are: > 1) * - any extension > 2) "" - files without extension > 3) literal extension without wildcard chars > Unfortunately it looks like there is no simple way to filter out hidden > files. actually the unix tk file dialog has an an (however undocumented) feature to hide hidden elements and display even a button that allows to toggle between hidden elements on/off, however we need to do a little tcl to get to this. Since the feature is not documented anywhere it might also be a good idea to wrap this into a try...except. See this little code snippet: ############################################# from Tkinter import * import tkFileDialog as tkfd root = Tk() try: # call a dummy dialog with an impossible option to initialize the file # dialog without really getting a dialog window; this will throw a # TclError, so we need a try...except : try: root.tk.call('tk_getOpenFile', '-foobarbaz') except TclError: pass # now set the magic variables accordingly root.tk.call('set', '::tk::dialog::file::showHiddenBtn', '1') root.tk.call('set', '::tk::dialog::file::showHiddenVar', '0') except: pass # a simple callback for testing: def openfile(event): fname = tkfd.askopenfilename() print(fname) root.bind('<Control-o>', openfile) root.mainloop() ############################################# Best regards Michael _______________________________________________ Tkinter-discuss mailing list Tkinter-discuss(a)python.org https://mail.python.org/mailman/listinfo/tkinter-discuss ------- End of Forwarded Message

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tkinter file dialog pattern matching
by Laura Creighton Aug. 23, 2015

Aug. 23, 2015

Somebody on the tutor mailing list wants to match "all files and direcories in this directory that do not start with a ." The filetypes option seems only to want patterns to match, not patterns to exclude. Is my pattern matching magic just off, or is there no way to exclude things in a tkFileDialog? puzzled, Laura

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Re: [Tkinter-discuss] Tkinter-discuss Digest, Vol 136, Issue 3
by Daniel Graham, Ph.D. Aug. 23, 2015

Aug. 23, 2015

I use fnmatch: for path, dirs, files in os.walk(root): # exclude dirs dirs[:] = [os.path.join(path, d) for d in dirs if not fnmatch.fnmatch(d, exclude)] # exclude files files = [os.path.join(path, f) for f in files if not fnmatch.fnmatch(f, exclude)] where exclude=r’.*’ -Dan On Aug 23, 2015, at 6:00 AM, tkinter-discuss-request(a)python.org<mailto:tkinter-discuss-request@python.org> wrote: Send Tkinter-discuss mailing list submissions to tkinter-discuss(a)python.org<mailto:tkinter-discuss@python.org> To subscribe or unsubscribe via the World Wide Web, visit https://mail.python.org/mailman/listinfo/tkinter-discuss or, via email, send a message with subject or body 'help' to tkinter-discuss-request(a)python.org You can reach the person managing the list at tkinter-discuss-owner(a)python.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Tkinter-discuss digest..." Today's Topics: 1. tkinter file dialog pattern matching (Laura Creighton) 2. Re: tkinter file dialog pattern matching (Pawel Mosakowski) 3. Re: tkinter file dialog pattern matching (Laura Creighton) 4. Re: tkinter file dialog pattern matching (Cameron Laird) ---------------------------------------------------------------------- Message: 1 Date: Sat, 22 Aug 2015 13:03:46 +0200 From: Laura Creighton <lac(a)openend.se> To: tkinter-discuss(a)python.org Subject: [Tkinter-discuss] tkinter file dialog pattern matching Message-ID: <201508221103.t7MB3kdx010426(a)fido.openend.se> Content-Type: text/plain; charset="us-ascii" Somebody on the tutor mailing list wants to match "all files and direcories in this directory that do not start with a ." The filetypes option seems only to want patterns to match, not patterns to exclude. Is my pattern matching magic just off, or is there no way to exclude things in a tkFileDialog? puzzled, Laura ------------------------------ Message: 2 Date: Sat, 22 Aug 2015 21:04:24 +0100 From: Pawel Mosakowski <pawel(a)mosakowski.net> To: tkinter-discuss(a)python.org Subject: Re: [Tkinter-discuss] tkinter file dialog pattern matching Message-ID: <20150822210424.321b826f@lenny> Content-Type: text/plain; charset=US-ASCII Hi, I've found this little gem in the Tk docs https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13 From what I see "file patterns" in the file dialog are not "regex patterns" and do not support special characters. Only things that work are: 1) * - any extension 2) "" - files without extension 3) literal extension without wildcard chars Unfortunately it looks like there is no simple way to filter out hidden files. Check out this answer https://mail.python.org/pipermail//tutor/2011-November/086483.html Regards, Pawel Mosakowski On Sat, 22 Aug 2015 13:03:46 +0200 Laura Creighton <lac(a)openend.se> wrote: Somebody on the tutor mailing list wants to match "all files and direcories in this directory that do not start with a ." The filetypes option seems only to want patterns to match, not patterns to exclude. Is my pattern matching magic just off, or is there no way to exclude things in a tkFileDialog? puzzled, Laura _______________________________________________ Tkinter-discuss mailing list Tkinter-discuss(a)python.org https://mail.python.org/mailman/listinfo/tkinter-discuss ------------------------------ Message: 3 Date: Sat, 22 Aug 2015 22:17:11 +0200 From: Laura Creighton <lac(a)openend.se> To: Pawel Mosakowski <pawel(a)mosakowski.net> Cc: tkinter-discuss(a)python.org, lac(a)openend.se Subject: Re: [Tkinter-discuss] tkinter file dialog pattern matching Message-ID: <201508222017.t7MKHBac022500(a)fido.openend.se> Content-Type: text/plain; charset="us-ascii" In a message of Sat, 22 Aug 2015 21:04:24 +0100, Pawel Mosakowski writes: Hi, I've found this little gem in the Tk docs https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13 From what I see "file patterns" in the file dialog are not "regex patterns" and do not support special characters. Only things that work are: 1) * - any extension 2) "" - files without extension 3) literal extension without wildcard chars Unfortunately it looks like there is no simple way to filter out hidden files. Check out this answer https://mail.python.org/pipermail//tutor/2011-November/086483.html Regards, Pawel Mosakowski Thank you. Looks like it will be necessary to construct a new widget. I'm surprised ... Laura ------------------------------ Message: 4 Date: Sat, 22 Aug 2015 22:51:02 +0000 From: Cameron Laird <Cameron(a)phaseit.net> To: Laura Creighton <lac(a)openend.se> Cc: tkinter-discuss(a)python.org Subject: Re: [Tkinter-discuss] tkinter file dialog pattern matching Message-ID: <20150822225102.GA12242(a)lairds.us> Content-Type: text/plain; charset=us-ascii On Sat, Aug 22, 2015 at 10:17:11PM +0200, Laura Creighton wrote: In a message of Sat, 22 Aug 2015 21:04:24 +0100, Pawel Mosakowski writes: Hi, I've found this little gem in the Tk docs https://www.tcl.tk/man/tcl8.4/TkCmd/getOpenFile.htm#M13 From what I see "file patterns" in the file dialog are not "regex patterns" and do not support special characters. Only things that work are: 1) * - any extension 2) "" - files without extension 3) literal extension without wildcard chars Unfortunately it looks like there is no simple way to filter out hidden files. Check out this answer https://mail.python.org/pipermail//tutor/2011-November/086483.html Regards, Pawel Mosakowski Thank you. Looks like it will be necessary to construct a new widget. I'm surprised ... . . . More than I. I can understand your disappointment that file-dialogue "file patterns" have such a rudimentary syntax; I speculate with considerable confidence that the authors acted with sh as the model most in their mind. You're quite right, Laura, that the elements are at hand to allow you to construct your own variant. If the history of getOpenFile truly interests you, act quickly: while we can get to the authors now, it won't be many cycles more before their memories and records senesce irretrievably. ------------------------------ Subject: Digest Footer _______________________________________________ Tkinter-discuss mailing list Tkinter-discuss(a)python.org https://mail.python.org/mailman/listinfo/tkinter-discuss ------------------------------ End of Tkinter-discuss Digest, Vol 136, Issue 3 ***********************************************

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new ttk theme made with theme_create() doesn't inherit from parent
by Pawel Mosakowski Aug. 17, 2015

Aug. 17, 2015

Hi, When I create a new theme and set it to inherit from already existing one, the new theme comes up empty. It has no elements and buttons displayed with it show only label, no other layout components. I have no idea if it's normal behaviour or something is wrong with my setup. Maybe I'm just using it wrong. I'm running Python 3.4.3 with tk 8.6.4 on Arch Linux. =============================================== Test program =============================================== import tkinter as tk import tkinter.ttk as ttk style = ttk.Style() print('Available themes: ', style.theme_names()) print('\nSetting theme to default') style.theme_use('default') print('\nDisplaying theme "{0}" elements'.format(style.theme_use())) print(style.element_names()) print('\nCreating new theme') style.theme_create('new_theme', parent='default') print('\nAvailable themes: ', style.theme_names()) print('\nSetting theme to new_theme') style.theme_use('new_theme') print('\nDisplaying theme "{0}" elements'.format(style.theme_use())) print(style.element_names()) ================================================= Output ================================================= Available themes: ('clam', 'alt', 'default', 'classic') Setting theme to default Displaying theme "default" elements ('label', '', 'focus', 'treearea', 'separator', 'image', 'arrow', 'downarrow', 'Menubutton.indicator', 'Treeitem.row', 'vsash', 'text', 'sizegrip', 'indicator', 'Treeheading.cell', 'leftarrow', 'border', 'Radiobutton.indicator', 'hsash', 'vseparator', 'fill', 'thumb', 'background', 'uparrow', 'hseparator', 'trough', 'rightarrow', 'Treeitem.indicator', 'slider', 'field', 'pbar', 'Checkbutton.indicator', 'textarea', 'client', 'tab', 'padding') Creating new theme Available themes: ('new_theme', 'clam', 'alt', 'default', 'classic') Setting theme to new_theme Displaying theme "new_theme" elements () =================================================== Output end =================================================== Thanks in advance, Pawel Mosakowski

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Text widget incorrect 'displaylines' count
by Alexander Uvizhev Aug. 8, 2015

Aug. 8, 2015

Hi, Recently I came across some strangeness in tkinter Text widget. I bind <Configure> event to it and the first time I insert text into widget the callback is called and reports wrong 'displaylines' count. Here is the code: === $ cat test_text.py import tkinter def check(event): lines = event.widget.count('1.0', 'end', 'displaylines') print(lines) root = tkinter.Tk() master = tkinter.Frame(master=root) master.grid() text = tkinter.Text(master=master, height=1) text.bind('<Configure>', check) text.grid() text.insert('1.0', "1234567890") # first time insert text.insert('1.0', "1234567890") # second text.unbind('<Configure>') master.mainloop() === Output: $ python3 test_text.py (10,) Is it what's supposed to be or some sort of bug? -- Alexander Uvizhev uvizhe(a)yandex.ru

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