Added PyOhio2012 presentation source code

9 files changed, 469 insertions, 0 deletions

diff --git a/pyohio2012/pyohio.prj b/pyohio2012/pyohio.prj
new file mode 100644
index 0000000..3a5108f
--- /dev/null
+++ b/pyohio2012/pyohio.prj
@@ -0,0 +1 @@
+{"Name":"pyohio (None)","Root":{"Name":"+pyohio (None)","Files":[],"Folders":[{"Name":"+Presentation","Files":[{"filename":"./tkinter.textile","enabled":"1"}],"Folders":[]},{"Name":"+Source","Files":[{"filename":"./src/notebook.py","enabled":"1"},{"filename":"./src/treeview.py","enabled":"1"},{"filename":"./src/canvas.py","enabled":"1"},{"filename":"./src/canvas_with_mouse.py","enabled":"1"},{"filename":"./src/without_ttk.py","enabled":"1"},{"filename":"./src/all_widgets.py","enabled":"1"},{"filename":"./src/ttk_widgets.py","enabled":"1"}],"Folders":[]}]},"Options":{"Type": 0,"Architecture": 0,"Auto Makefile": 1,"Windows GUI": 0,"Build Dependencies": 1,"Target":"None","Build Directory":"build","Module Directory":"modules","Working Directory":"","Command Line Arguments":"","Keep Console":"true","Build Before Launch":"true","Library Directories":["Default Library Directory"],"Include Directories":["Default Include Directory"],"Fortran Flags":"","C Flags":"","Link Flags":""},"Tools":[{"Name":"Python 2.7","Command":"C:/Python/Python27/python.exe","Directory":"src","Open Console":"1"},{"Name":"Python 3.2","Command":"C:/Python/Python32/python.exe","Directory":"src","Open Console":"1"},{"Name":"Build Presentation","Command":"cmd /c slideshow -o presentation -t c:/workspace/present/approx/approx.txt tkinter.textile","Directory":"","Open Console":"1"},{"Name":"Command Prompt","Command":"cmd.exe","Directory":"src","Open Console":"0"}]}
\ No newline at end of file
diff --git a/pyohio2012/src/all_widgets.py b/pyohio2012/src/all_widgets.py
new file mode 100644
index 0000000..a406a52
--- /dev/null
+++ b/pyohio2012/src/all_widgets.py
@@ -0,0 +1,53 @@
+from Tkinter import *
+
+class AllWidgets():
+    def __init__(self, root):
+    
+        self.frame = Frame(root)
+        
+        self.build_window()
+        
+        self.frame.pack()
+        
+        menubar = Menu(root)
+        root['menu'] = menubar
+        
+        menu_file = Menu(menubar)
+        menu_file.add_command(label="Quit", command=self.quit)
+        
+        menubar.add_cascade(menu=menu_file, label='File')
+        
+        
+    def build_window(self):
+        Label(self.frame, text="Label").pack(side=TOP)
+        Button(self.frame, text="Button").pack(side=TOP)
+        
+        Entry(self.frame, text="Entry").pack(side=TOP)
+        lb = Listbox(self.frame, height=3)
+        lb.pack(side=TOP)
+        for x in ('Listbox 1', 'Listbox 2', 'Listbox 3'):
+            lb.insert('end', x)
+        #RadioButton(self.frame, text="Radio Button").pack(side=TOP)
+        LabelFrame(self.frame, text="Label Frame").pack(side=TOP)
+        Scale(self.frame, from_=0, to=200, orient=HORIZONTAL).pack(side=TOP)
+        Scrollbar(self.frame, orient=HORIZONTAL).pack(side=TOP, fill=X)
+        Spinbox(self.frame, from_=0, to=200).pack(side=TOP)
+        p = PhotoImage(file="image.gif")
+        l=Label(self.frame, image=p)
+        l.image = p
+        l.pack(side=TOP)
+        
+        t = Text(self.frame, height=5, width=20)
+        t.pack(side=TOP)
+        t.insert(END, "An editable\ntext widget")
+        
+
+    def quit(self):
+        self.frame.quit()
+
+if __name__ == '__main__':
+    root = Tk()
+    
+    app = AllWidgets(root)
+    
+    root.mainloop()
diff --git a/pyohio2012/src/canvas.py b/pyohio2012/src/canvas.py
new file mode 100644
index 0000000..54b4c72
--- /dev/null
+++ b/pyohio2012/src/canvas.py
@@ -0,0 +1,29 @@
+from tkinter import *
+from tkinter.ttk import *
+
+class TkCanvas():
+    def __init__(self, root):
+    
+        self.frame = Frame(root)
+        self.canvas = Canvas(self.frame)
+        self.canvas.grid(row=0, column=0)
+        
+        self.draw_rect()
+        
+        quit_button = Button(self.frame, text='Quit', command=self.quit)
+        quit_button.grid(row=1, column=0, sticky=(S,E))
+        
+        self.frame.pack(fill=BOTH, expand=True)
+        
+    def draw_rect(self):
+        self.canvas.create_rectangle((100,100), (30,40))
+        
+    def quit(self):
+        self.frame.quit()
+
+if __name__ == '__main__':
+    root = Tk()
+    
+    app = TkCanvas(root)
+    
+    root.mainloop()
\ No newline at end of file
diff --git a/pyohio2012/src/canvas_with_mouse.py b/pyohio2012/src/canvas_with_mouse.py
new file mode 100644
index 0000000..41eac41
--- /dev/null
+++ b/pyohio2012/src/canvas_with_mouse.py
@@ -0,0 +1,43 @@
+from tkinter import *
+from tkinter.ttk import *
+
+class TkCanvas():
+    def __init__(self, root):
+    
+        self.frame = Frame(root)
+        self.canvas = Canvas(self.frame)
+        self.canvas.grid(row=0, column=0, sticky=(N,S,E,W))
+        
+        self.draw_rect()
+        
+        quit_button = Button(self.frame, text='Quit', command=self.quit)
+        quit_button.grid(row=1, column=0, sticky=(S,E))
+        
+        self.frame.columnconfigure(0, weight=2)
+        self.frame.rowconfigure(0, weight=2)
+        
+        self.frame.pack(fill=BOTH, expand=True)
+        
+        self.canvas.bind("<Button-1>", self.start_line)
+        self.canvas.bind("<B1-Motion>", self.draw_line)
+        self.initial = (0,0)
+        
+    def start_line(self, event):
+        self.initial = (event.x, event.y)
+        
+    def draw_line(self, event):
+        self.canvas.create_line((self.initial[0], self.initial[1], event.x, event.y))
+        self.initial = (event.x, event.y)
+        
+    def draw_rect(self):
+        self.canvas.create_rectangle((100,100), (30,40))
+        
+    def quit(self):
+        self.frame.quit()
+
+if __name__ == '__main__':
+    root = Tk()
+    
+    app = TkCanvas(root)
+    
+    root.mainloop()
\ No newline at end of file
diff --git a/pyohio2012/src/notebook.py b/pyohio2012/src/notebook.py
new file mode 100644
index 0000000..326d0c7
--- /dev/null
+++ b/pyohio2012/src/notebook.py
@@ -0,0 +1,36 @@
+from tkinter import *
+from tkinter.ttk import *
+
+class TkNotebook():
+    def __init__(self, root):
+    
+        self.frame = Frame(root)
+        self.notebook = Notebook(self.frame)
+        
+        f1 = Frame(self.notebook, width=200, height=100)
+        f2 = Frame(self.notebook, width=200, height=100)
+        self.notebook.add(f1, text="Page 1")
+        self.notebook.add(f2, text="Page 2")
+        
+        self.label = Label(self.frame, text="A Notebook on the left")
+        
+        # Layout
+        self.frame.grid(row=0, column=0, sticky=(N, S, E, W))
+        self.notebook.grid(row=0, column=0, sticky=(N, S, E, W))
+        self.label.grid(row=0, column=1, sticky=(E,))
+        
+        # Resize rules
+        root.columnconfigure(0, weight=1)
+        root.rowconfigure(0, weight=1)
+        self.frame.columnconfigure(0, weight=2)
+        self.frame.rowconfigure(0, weight=2)
+        
+    def quit(self):
+        self.frame.quit()
+
+if __name__ == '__main__':
+    root = Tk()
+    
+    app = TkNotebook(root)
+    
+    root.mainloop()
\ No newline at end of file
diff --git a/pyohio2012/src/treeview.py b/pyohio2012/src/treeview.py
new file mode 100644
index 0000000..b545245
--- /dev/null
+++ b/pyohio2012/src/treeview.py
@@ -0,0 +1,60 @@
+from tkinter import *
+from tkinter.ttk import *
+
+class TkTrees():
+    def __init__(self, root):
+        self.root = root
+        
+        self.notebook = Notebook(root)
+        
+        f1 = Frame(self.notebook)
+        f2 = Frame(self.notebook)
+        self.notebook.add(f1, text="Columned List")
+        self.notebook.add(f2, text="Tree")
+        
+        self.column_treeview(f1)
+        self.tree_treeview(f2)
+
+        # Layout
+        self.notebook.grid(row=0, column=0, sticky=(N, S, E, W))
+        
+        # Resize rules
+        root.columnconfigure(0, weight=1)
+        root.rowconfigure(0, weight=1)
+        
+    def column_treeview(self, parent):
+    
+        columns = ('Name', 'Description')
+                   
+        self.ctree = Treeview(parent, columns=columns, show="headings")
+        for col in columns:
+            self.ctree.column(col, width=90)
+            self.ctree.heading(col, text=col)
+
+        self.ctree.insert('', 'end', values=('Example', 'One row...'))
+        self.ctree.insert('', 'end', values=('Example Part 2', 'Another row...'))
+
+        self.ctree.pack(fill=BOTH, expand=1)
+        
+    def tree_treeview(self, parent):
+                   
+        self.ttree = Treeview(parent)
+
+        id = self.ttree.insert('', 'end', text='Example')
+        self.ttree.insert(id, 'end', text='First sub item')
+        
+        id = self.ttree.insert('', 'end', text='Example Part 2')
+        self.ttree.insert(id, 'end', text='A different sub item')
+        
+        self.ttree.pack(fill=BOTH, expand=1)
+        
+        
+    def quit(self):
+        self.root.quit()
+
+if __name__ == '__main__':
+    root = Tk()
+    
+    app = TkTrees(root)
+    
+    root.mainloop()
\ No newline at end of file
diff --git a/pyohio2012/src/ttk_widgets.py b/pyohio2012/src/ttk_widgets.py
new file mode 100644
index 0000000..0aad592
--- /dev/null
+++ b/pyohio2012/src/ttk_widgets.py
@@ -0,0 +1,43 @@
+try:
+    from Tkinter import *
+    from ttk import *
+except ImportError:
+    from tkinter import *
+    from tkinter.ttk import *
+
+class TtkWidgets():
+    def __init__(self, root):
+    
+        self.frame = Frame(root)
+        
+        self.build_window()
+        
+        self.frame.pack()
+        
+        menubar = Menu(root)
+        root['menu'] = menubar
+        
+        menu_file = Menu(menubar)
+        menu_file.add_command(label="Quit", command=self.quit)
+        
+        menubar.add_cascade(menu=menu_file, label='File')
+        
+    def build_window(self):
+        cbv = StringVar()
+        Combobox(self.frame, textvariable=cbv, 
+            values=('Canada', 'Sweden', 'Germany')).pack(side=TOP)
+
+        Checkbutton(self.frame, text='Check').pack(side=TOP)
+        Radiobutton(self.frame, text='Radio').pack(side=TOP)
+        pb = Progressbar(self.frame, orient=HORIZONTAL, length=200, mode='indeterminate')
+        pb.start()
+
+    def quit(self):
+        self.frame.quit()
+
+if __name__ == '__main__':
+    root = Tk()
+    
+    app = TtkWidgets(root)
+    
+    root.mainloop()
diff --git a/pyohio2012/src/without_ttk.py b/pyohio2012/src/without_ttk.py
new file mode 100644
index 0000000..b5da854
--- /dev/null
+++ b/pyohio2012/src/without_ttk.py
@@ -0,0 +1,39 @@
+from Tkinter import *
+
+class WithoutTtk():
+    def __init__(self, root):
+    
+        self.frame = Frame(root)
+        
+        self.build_window()
+        
+        self.frame.pack(fill=BOTH)
+        
+        menubar = Menu(root)
+        root['menu'] = menubar
+        
+        menu_file = Menu(menubar)
+        menu_file.add_command(label="Quit", command=self.quit)
+        
+        menubar.add_cascade(menu=menu_file, label='File')
+        
+        
+    def build_window(self):
+        label = Label(self.frame, text="How do I look?")
+        label.pack(side=TOP)
+        
+        button_bad = Button(self.frame, text="Terrible", command=self.quit)
+        button_bad.pack(side=LEFT)
+        
+        button_good = Button(self.frame, text="Not too shabby", command=self.quit)
+        button_good.pack(side=RIGHT)
+
+    def quit(self):
+        self.frame.quit()
+
+if __name__ == '__main__':
+    root = Tk()
+    
+    app = WithoutTtk(root)
+    
+    root.mainloop()
diff --git a/pyohio2012/tkinter.textile b/pyohio2012/tkinter.textile
new file mode 100644
index 0000000..e3afcff
--- /dev/null
+++ b/pyohio2012/tkinter.textile
@@ -0,0 +1,165 @@
+title: An Introduction to Tkinter
+subtitle: A User's Perspective
+author: Jeffrey B. Armstrong
+company: Approximatrix, LLC
+footer: PyOhio
+subfooter: 28 July 2012
+
+h1. Introduction
+
+* Tkinter (or tkinter)
+** Interface to Tcl/Tk
+** The only GUI framework in the Python standard library
+** Simple to use
+* The speaker
+** Casual Tkinter user
+** Some experience with other GUI toolkits
+
+h1. Opinions
+
+* Three types of people here
+** Never used it
+** Use it and Like it
+** Hate it
+
+h1. Why Care?
+
+* Tkinter is part of the Python standard library
+* Lightweight
+* _Good enough_
+** In fact, it can be great!
+
+h1. The Past
+
+* Limited widget set
+* Unweildy _import_
+* Considered ugly
+
+h1. The Present
+
+* Python 3.x
+** Changed to Pythonic namespaces, like _tkinter_
+** Introduced...
+
+h1. Themed Tk
+
+* `ttk` module
+* Makes old Tkinter look pretty
+** Kinda platform-specific...
+
+h1. Getting Started
+
+* Tk operates in "loop" that is transparent to the developer
+* Widgets are assigned parents, which contain other widgets, etc.
+* Layout managers handle widget placement
+* Widgets can have events "bound" to them and respond accordingly
+
+h1. Layout Managers
+
+* Tkinter provides three geometry managers
+** absolute (avoid this)
+** pack
+** grid
+
+h1. pack Layout
+
+* Extremely simple
+* Specify a side
+* Parent sizes itself to minimally fit everything
+* Not particularly flexible for complex layouts
+
+h1. grid Layout
+    
+* Closer to other toolkits
+* Frames are laid out in a grid
+** Resizing can be handled via _expand_ arguments
+
+h1. Widgets
+
+* tkinter historically provides common, simple widgets
+* Considered a shortcoming 
+** Missing more advanced widgets
+
+h1. Widgets
+
+!{border:0px; float:right; height:14em}widgets.png!
+
+<table style="width: 40%;">
+<tr><td>Button</td><td>Menu</td></tr>
+<tr><td>Frame</td><td>Scale</td></tr>
+<tr><td>Label</td><td>Scrollbar</td></tr>
+<tr><td>Label with Image</td><td>Spinbox</td></tr>
+<tr><td>Listbox</td><td>Text</td></tr></table>
+
+h1. ttk Widgets
+
+* "Overrides" drawing of tkinter widgets 
+** Drawing now handled by theme engine
+* Introduces new, modern widgets
+* Change the "style"
+** _ttk.Style().theme_names()_
+** _ttk.Style().theme_use(style)_
+
+h1. ttk Notebook
+
+* Provides modern paged notebook of frames, accesible via tabs
+* Sensible functionality
+
+h1. ttk Treeview
+
+* Implements tree, list, columned list, etc.
+
+h1. ttk et cetera 
+
+!{border:0px; float:right; height:10em}ttk_widgets.png!
+
+* Combobox
+* CheckButton
+* RadioButton
+* Progressbar
+* Separator
+* Sizegrip 
+
+h1. Canvas
+
+* Allows for simple primitive drawing within a Tk widget
+* Opens up the door for custom widget behavior
+
+h1. Events
+
+* Tkinter events are relatively simple
+** For buttons: _Button(text='Button Name', command=button_callback)_
+* For more complex components, _bind_ method can be used
+
+h1. Standard Dialogs
+
+* File dialog
+** _tkinter.filedialog_ or _tkFileDialog_
+* Color chooser
+** _tkinter.colorchooser_ or _tkColorChooser_
+* Message box
+** _tkinter.messagebox_ or _tkMessageBox_
+
+h1. 2.7 and 3.x
+
+* Python 2.7 and 3.x both contain Themed Tk
+** Cross-version applications
+* Python 2.x has different Tkinter namespace
+** Python 3.x made tkinter slightly more Pythonic
+** Need some ImportError exception magic for cross-version code
+
+h1. Documentation
+
+* Python library documentation on tkinter is arguably sparse
+** ttk, however, is well-documented
+
+* http://www.tkdocs.com/
+** Reference for Tk in Tcl, Ruby, OCaml, and *Python*
+
+h1. Summary
+
+* Tkinter can be pretty sweet!
+** Ships with (almost) all Python ports
+** Now with modern widgets
+* "Ugly" is gone with ttk
+* Easy to build a quick GUI