Mailman 3 July 2008 - Tkinter-discuss

Possibly n00bish question about ImageTk
by Barnesdesdes Feb. 10, 2009

Feb. 10, 2009

I've been trying to make a program which will import a png file and display it inside a frame. It actually works when I just run the code, but if I try to abstract the exact same code into a function, it fails. In the code below, if I just run it, it works. However, if I comment out the lines between "root=Tkinter.Tk()" and "moo(root)" and comment in "moo(root)", it no longer works. Instead of displaying the image, it just displays a gray frame of the correct size. Does anyone have any insights about what I'm doing wrong? import Image, ImageTk, Tkinter def moo(master): img = Image.open('plotfig.png') f = Tkinter.Frame(master, width=800, height=600) pi = ImageTk.PhotoImage(img) t = Tkinter.Label(f, image=pi) f.pack() t.place(x=0, y=0, width=800, height=600) t.pack() root = Tkinter.Tk() img = Image.open('plotfig.png') f = Tkinter.Frame(root, width=800, height=600) pi = ImageTk.PhotoImage(img) t = Tkinter.Label(f, image=pi) f.pack() t.place(x=0, y=0, width=800, height=600) t.pack() #moo(root) root.mainloop() Thanks very much. Alan -- View this message in context: http://www.nabble.com/Possibly-n00bish-question-about-ImageTk-tf3990201.htm… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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RADIOBUTTON AND BUTTON
by EDWINFMI July 31, 2008

July 31, 2008

Hy guys I am testing my script, but something weird happend with this script. When i was running the script with the command print at the end of the function calculation, i got a good result , this means that my script is well done, but whe i am using the command return i can not define a value by using my button execute and always this script is printing a result before the execution. The main idea is to select a option and after that to execute a conditional with fornulas inside. thanks in advance #####by using return #----------------------------------------- from Tkinter import * # start of GUI Panel stuff import tkMessageBox from grail.data import pcf from grail.data import model from grail.dialogs import gselectprojectdialog from grail import const from grail import gsys from grail import messages import time import glob import string import time import sys import os import math import Pmw class notebook: # initialization. receives the master widget # reference and the notebook orientation def __init__(self, master, side=LEFT): self.active_fr = None self.count = 0 self.choice = IntVar(0) # allows the TOP and BOTTOM # radiobuttons' positioning. if side in (TOP, BOTTOM): self.side = LEFT else: self.side = TOP # creates notebook's frames structure self.rb_fr = Frame(master, borderwidth=2, relief=RIDGE) self.rb_fr.pack(side=side, fill=BOTH) self.screen_fr = Frame(master, borderwidth=2, relief=RIDGE) self.screen_fr.pack(fill=BOTH) # return a master frame reference for the external frames (screens) def __call__(self): return self.screen_fr # add a new frame (screen) to the (bottom/left of the) notebook def add_screen(self, fr, title): b = Radiobutton(self.rb_fr, text=title, indicatoron=0, \ variable=self.choice, value=self.count, \ command=lambda: self.display(fr)) b.pack(fill=BOTH, side=self.side) # ensures the first frame will be # the first selected/enabled if not self.active_fr: fr.pack(fill=BOTH, expand=1) self.active_fr = fr self.count += 1 # returns a reference to the newly created # radiobutton (allowing its configuration/destruction) return b # hides the former active frame and shows # another one, keeping its reference def display(self, fr): self.active_fr.forget() fr.pack(fill=BOTH, expand=1) self.active_fr = fr # END #================================================================================ def calculation(): global method_case #=================================================================== # METHOD CASE #=================================================================== method_case = r.get()# 0 Simple Best # 1 Simple cutoff # 2 Complex cutoff file 19 root.destroy() return if method_case == 0: print "es 0" if method_case == 1: print "es 1" if method_case == 2: print "es 2" ###------------------------------- root = Tk() root.title(" Project Office") root.geometry("450x400") n = notebook(root, LEFT) Pmw.initialise() button3 = Button(root,text="Accept",fg="red", command=calculation) button3.pack(side="top") button4 = Button(root,text="Cancel",fg="red", command=root.destroy) button4.pack(side="top") # uses the notebook's frame #==================================================================== # #=================================================================== f1 = Frame(n()) method =[('SIMPLE BEST BLOCK VALUE', 0), ('SIMPLE APPLIED CUTOFF', 1), ('COMPLEX APPLIED CUTOFF FILE 19', 2)] r = IntVar() r.set(0) for text, value in method: b = Radiobutton(f1, text=text,value=value, variable=r) b.pack(anchor=W) case.set(0) # keeps the reference to the radiobutton (optional) x1 = n.add_screen(f1, "Case Study") root.mainloop() # END #####by using print #----------------------------------------- from Tkinter import * # start of GUI Panel stuff import tkMessageBox from grail.data import pcf from grail.data import model from grail.dialogs import gselectprojectdialog from grail import const from grail import gsys from grail import messages import time import glob import string import time import sys import os import math import Pmw class notebook: # initialization. receives the master widget # reference and the notebook orientation def __init__(self, master, side=LEFT): self.active_fr = None self.count = 0 self.choice = IntVar(0) # allows the TOP and BOTTOM # radiobuttons' positioning. if side in (TOP, BOTTOM): self.side = LEFT else: self.side = TOP # creates notebook's frames structure self.rb_fr = Frame(master, borderwidth=2, relief=RIDGE) self.rb_fr.pack(side=side, fill=BOTH) self.screen_fr = Frame(master, borderwidth=2, relief=RIDGE) self.screen_fr.pack(fill=BOTH) # return a master frame reference for the external frames (screens) def __call__(self): return self.screen_fr # add a new frame (screen) to the (bottom/left of the) notebook def add_screen(self, fr, title): b = Radiobutton(self.rb_fr, text=title, indicatoron=0, \ variable=self.choice, value=self.count, \ command=lambda: self.display(fr)) b.pack(fill=BOTH, side=self.side) # ensures the first frame will be # the first selected/enabled if not self.active_fr: fr.pack(fill=BOTH, expand=1) self.active_fr = fr self.count += 1 # returns a reference to the newly created # radiobutton (allowing its configuration/destruction) return b # hides the former active frame and shows # another one, keeping its reference def display(self, fr): self.active_fr.forget() fr.pack(fill=BOTH, expand=1) self.active_fr = fr # END #================================================================================ def calculation(): global method_case #=================================================================== # METHOD CASE #=================================================================== method_case = r.get()# 0 Simple Best # 1 Simple cutoff # 2 Complex cutoff file 19 root.destroy() print method_case ###------------------------------- root = Tk() root.title(" Project Office") root.geometry("450x400") n = notebook(root, LEFT) Pmw.initialise() button3 = Button(root,text="Accept",fg="red", command=calculation) button3.pack(side="top") button4 = Button(root,text="Cancel",fg="red", command=root.destroy) button4.pack(side="top") # uses the notebook's frame #==================================================================== # #=================================================================== f1 = Frame(n()) method =[('SIMPLE BEST BLOCK VALUE', 0), ('SIMPLE APPLIED CUTOFF', 1), ('COMPLEX APPLIED CUTOFF FILE 19', 2)] r = IntVar() r.set(0) for text, value in method: b = Radiobutton(f1, text=text,value=value, variable=r) b.pack(anchor=W) case.set(0) # keeps the reference to the radiobutton (optional) x1 = n.add_screen(f1, "Case Study") root.mainloop() # END -- View this message in context: http://www.nabble.com/RADIOBUTTON-AND-BUTTON-tp18759173p18759173.html Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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creating a custom style GUI
by Alexnb July 29, 2008

July 29, 2008

This isn't really related to Tkinter, but I think some people here might be able to help me. I want to create a GUI That is kind of custom. Meaning that not just the standard stuff in Tkinter, but stuff that I create, such as custom buttons and backgrounds. I don't care if it uses tcl or not. I am just wondering what I can do to create such a thing and tie it together with python. -- View this message in context: http://www.nabble.com/creating-a-custom-style-GUI-tp18720799p18720799.html Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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[Tkinter]Right click popup
by Ambigioz July 29, 2008

July 29, 2008

Hello, I'm trying to do a notepad with tkinter in windows (well also for linux),and i'd like to create a popup with 'copy' , 'paste', 'cut', bla bla,on right click. My only problem it's to create that popup,because it's not neither toplevel nor alerts dialogs...can you help me?:p -- View this message in context: http://www.nabble.com/-Tkinter-Right-click-popup-tp18686679p18686679.html Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Displaying multiple image frames sequentially on the same window
by Mezesh July 29, 2008

July 29, 2008

""" Hi all, I am relatively new to Tk and after following some examples from various sources, I have managed to write the (drastically simplified for posting purposes) code below. I'm sure that there are some glaring issues with the code and I'm not quite in touch with what I'm doing, but all I need to do is to get a prototype working. My problem is that I need to start a server which a client will connect to and send some image data over tcp. These images are sent at a rate of say 10 frames per second and I want to write the data to file and display it on a Tk window. I also want to show multiple frames as the data arrives without opening a new window each time. So, I have three classes: 1)ThreadedClient which launches the gui and starts a server thread 2)TCPServer which is the server whose handle() method is called when there's data to be processed and 3)Window which is the gui. The server thread works fine i.e it receives image data, writes the data to a file and puts a number on the queue to identify the image file. Note that the queue is global,I haven't yet figured out how to pass it to the server but it works fine for now, I think. Also, if I click on the main window using a mouse button, the event handler paint() is called fine and it loads the image every time I make a mouse click. Now I don't want the handler to be called only when the user clicks on the window, I would like it to be called periodically to check if there's something in the queue. That's what I intended to do with the periodicCall() method in the ThreadedClient class. The problem is, when I attempt to generate the mouse event, it blocks and so it is called only once. I'm not really sure how to get the mouse event generated periodically. I have run out of ideas about how to do this, so I would appreciate any help. Cheers, Mezesh --- """ import Tkinter,ImageTk,Image import threading,os,sys,Queue class Window: def __init__(self,master,queue): self.master = master self.master.bind("<Button>", self.button_click_exit_mainloop) self.master.geometry('+%d+%d' % (100,100)) self.queue = queue self.old_label_image = None def button_click_exit_mainloop(event): event.widget.quit() # this will cause mainloop to unblock def paint(self): # proceed only if the queue is not empty if self.queue.qsize(): frame = Image.open("frame%i.pgm" % self.queue.get(0)) self.master.geometry('%dx%d' % (frame.size[0],frame.size[1])) photoImage = ImageTk.PhotoImage(frame) label_image = Tkinter.Label(self.master,image = photoImage) label_image.place(x=0,y=0,width=frame.size[0],height=frame.size[1]) self.master.title('Frame') if self.old_label_image is not None: self.old_label_image.destroy() self.old_label_image = label_image self.master.mainloop() globalQueue = Queue.Queue() class TCPServer(SocketServer.BaseRequestHandler): def setup(self): self.count = 0 def handle(self): data = self.request.recv(1024) self.writeImageFileFromData(data) def writeImageFileFromData(self.data): #parse data and write image file global globalQueue globalQueue.put(self.count) self.count += 1 class ThreadedClient: def __init__(self,master): global globalQueue self.gui = Window(master,globalQueue) self.thread1 = threading.Thread(target=self.serverThread) self.thread1.start() def serverThread(self): # SERVER_ADDRESS and SERVER_PORT are globally defined variables server = SocketServer.TCPServer((SERVER_ADDRESS, SERVER_PORT), TCPServer) # blocking method server.handle_request() def periodicCall(self): self.master.event_generate("<Button>") self.master.after(10,self.periodicCall) if __name__== "__main__": root == Tkinter.Tk() client == ThreadedClient(root) root.mainloop() -- View this message in context: http://www.nabble.com/Displaying-multiple-image-frames-sequentially-on-the-… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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tkinter print file Dialog?
by Alexnb July 27, 2008

July 27, 2008

So, I know there is a tk.openfiledialog() thing. But is there one for printing? like I am doubting it, but I want to prompt the user and let them be able to pick a printer. Is there one? or is there a good way to do this? -- View this message in context: http://www.nabble.com/tkinter-print-file-Dialog--tp18679602p18679602.html Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Issue with scrolling in a Text() widget on a mac
by Alexnb July 20, 2008

July 20, 2008

Hello everyone! So, I have a texbox widget and I connected a scrollbar to it. On my PC everything works great. But on my mac, you can't scroll when you click the box and dragging the actual bar is very choppy. The only way it works like it should is the actual arrow on the end of the bar. I am wondering if this can be fixed? or is it just a weird bug you have to deal with? Here is the code: self.scrollbar = Scrollbar(self.textFrameBuffer) self.scrollbar.pack(side=RIGHT, fill=Y) self.text = Text(self.textFrameBuffer, yscrollcommand=self.scrollbar.set) self.text.pack(side=LEFT, fill=BOTH, expand=YES) -- View this message in context: http://www.nabble.com/Issue-with-scrolling-in-a-Text%28%29-widget-on-a-mac-… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Making an image the background of a Frame
by Alexnb July 20, 2008

July 20, 2008

So, is there a way I can make the background of a frame an image and still have all the widgets (buttons in this case) remain where they are and how they work? -- View this message in context: http://www.nabble.com/Making-an-image-the-background-of-a-Frame-tp18549545p… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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Buttons on a mac over-riding the Frame background
by Alexnb July 19, 2008

July 19, 2008

Okay, so if my title didn't make that much sense, what I mean is this. Say I have a frame called "buttonsFrame" and I have two buttons in it. If the Frame's background is red, there is a little white square around the buttons. how can I get rid of that? Is there a way to change the default root background? -- View this message in context: http://www.nabble.com/Buttons-on-a-mac-over-riding-the-Frame-background-tp1… Sent from the Python - tkinter-discuss mailing list archive at Nabble.com.

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multithreading
by Craig Allen July 19, 2008

July 19, 2008

Anyone that's interested, I have a command line application which I want to run as such, with a flag that alternately puts up a pretty monitoring GUI that shows in more detail what's going on. So fine, I run the Tk mainloop in a background thread. I've read and learned myself you cannot make your Tk calls outside this thread. Fine. But as this is a bit of an extra feature I have not been particularly careful, and since the command line can execute more than one sequence of it's processing, it wants to open up a new pair of windows every time. As I"m just hacking this together (the pretty Tk interface is an addition, not really required to be build) to do this I call the master object which is a threading object... i.e. another thread is started, and this other thread has a mainloop call in it. It all works fine, but I'm sort of of the impression I'm not supposed to do this, that there should only be one thread running a mainloop call. Is that true, is this evil? Any comments appreciated. craig

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