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breezypythongui.py
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breezypythongui.py
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"""
File: breezypythongui.py
Version: 1.0
Copyright 2012 by Ken Lambert
Resources for easy Python GUIs.
LICENSE: This is open-source software released under the terms of the
GPL (http://www.gnu.org/licenses/gpl.html). Its capabilities mirror those
of BreezyGUI and BreezySwing, open-source frameworks for writing GUIs in Java,
written by Ken Lambert and Martin Osborne.
PLATFORMS: The package is a wrapper around tkinter (Python 3.X) and should
run on any platform where tkinter is available.
INSTALLATION: Put this file where Python can see it.
"""
import tkinter
import tkinter.simpledialog
N = tkinter.N
S = tkinter.S
E = tkinter.E
W = tkinter.W
CENTER = tkinter.CENTER
END = tkinter.END
NORMAL = tkinter.NORMAL
DISABLED = tkinter.DISABLED
NONE = tkinter.NONE
WORD = tkinter.WORD
VERTICAL = tkinter.VERTICAL
HORIZONTAL = tkinter.HORIZONTAL
RAISED = tkinter.RAISED
SINGLE = tkinter.SINGLE
ACTIVE = tkinter.ACTIVE
class EasyFrame(tkinter.Frame):
"""Represents an application window."""
def __init__(self, title = "", width = None, height = None,
background = "white", resizable = True):
"""Will shrink wrap the window around the widgets if width
and height are not provided."""
tkinter.Frame.__init__(self, borderwidth = 4, relief = "sunken")
if width and height:
self.setSize(width, height)
self.master.title(title)
self.grid()
# Expand the frame within the window
self.master.rowconfigure(0, weight = 1)
self.master.columnconfigure(0, weight = 1)
self.grid(sticky = N+S+E+W)
# Set the background color and resizability
self.setBackground(background)
self.setResizable(resizable)
def setBackground(self, color):
"""Resets the window's background color to color."""
self["background"] = color
def setResizable(self, state):
"""Resets the window's resizable property to True
or False."""
self.master.resizable(state, state)
def setSize(self, width, height):
"""Resets the window's width and height in pixels."""
self.master.geometry(str(width)+ "x" + str(height))
def setTitle(self, title):
"""Resets the window's title to title."""
self.master.title(title)
# Methods to add widgets to the window. The row and column in
# the grid are required arguments.
def addLabel(self, text, row, column,
columnspan = 1, rowspan = 1,
sticky = N+W, font = None,
background = "white", foreground = "black"):
"""Creates and inserts a label at the row and column,
and returns the label."""
label = tkinter.Label(self, text = text, font = font,
background = background,
foreground = foreground)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
label.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return label
def addButton(self, text, row, column,
columnspan = 1, rowspan = 1,
command = lambda: None,
state = NORMAL):
"""Creates and inserts a button at the row and column,
and returns the button."""
button = tkinter.Button(self, text = text,
command = command, state = state)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
button.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5)
return button
def addFloatField(self, value, row, column,
columnspan = 1, rowspan = 1,
width = 20, precision = None,
sticky = N+E, state = NORMAL):
"""Creates and inserts a float field at the row and column,
and returns the float field."""
field = FloatField(self, value, width, precision, state)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return field
def addIntegerField(self, value, row, column,
columnspan = 1, rowspan = 1,
width = 10, sticky = N+E, state = NORMAL):
"""Creates and inserts an integer field at the row and column,
and returns the integer field."""
field = IntegerField(self, value, width, state)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return field
def addTextField(self, text, row, column,
columnspan = 1, rowspan = 1,
width = 20, sticky = N+E, state = NORMAL):
"""Creates and inserts a text field at the row and column,
and returns the text field."""
field = TextField(self, text, width, state)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return field
def addTextArea(self, text, row, column, rowspan = 1, columnspan = 1,
width = 80, height = 5, wrap = NONE):
"""Creates and inserts a multiline text area at the row and column,
and returns the text area. Vertical and horizontal scrollbars are
provided."""
frame = tkinter.Frame(self)
frame.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
sticky = N+S+E+W)
self.columnconfigure(column, weight = 1)
self.rowconfigure(row, weight = 1)
xScroll = tkinter.Scrollbar(frame, orient = HORIZONTAL)
xScroll.grid(row = 1, column = 0, sticky = E+W)
yScroll = tkinter.Scrollbar(frame, orient = VERTICAL)
yScroll.grid(row = 0, column = 1, sticky = N+S)
area = TextArea(frame, text, width, height,
xScroll.set, yScroll.set, wrap)
area.grid(row = 0, column = 0,
padx = 5, pady = 5, sticky = N+S+E+W)
frame.columnconfigure(0, weight = 1)
frame.rowconfigure(0, weight = 1)
xScroll["command"] = area.xview
yScroll["command"] = area.yview
return area
def addListbox(self, row, column, rowspan = 1, columnspan = 1,
width = 10, height = 5, listItemSelected = lambda index: index):
"""Creates and inserts a scrolling list box at the row and column, with a
width and height in lines and columns of text, and a default item selection
method, and returns the list box."""
frame = tkinter.Frame(self)
frame.grid(row = row, column = column, columnspan = columnspan, rowspan = rowspan,
sticky = N+S+E+W)
self.columnconfigure(column, weight = 1)
self.rowconfigure(row, weight = 1)
yScroll = tkinter.Scrollbar(frame, orient = VERTICAL)
yScroll.grid(row = 0, column = 1, sticky = N+S)
listBox = EasyListbox(frame, width, height, yScroll.set, listItemSelected)
listBox.grid(row = 0, column = 0, sticky = N+S+E+W)
frame.columnconfigure(0, weight = 1)
frame.rowconfigure(0, weight = 1)
yScroll["command"] = listBox.yview
return listBox
def addCanvas(self, canvas = None, row = 0, column = 0,
rowspan = 1, columnspan = 1, width = 200, height = 100,
background = "white"):
"""Creates and inserts a canvas at the row and column,
and returns the canvas."""
if not canvas:
canvas = EasyCanvas(self, width = width, height = height,
background = background)
canvas.grid(row = row, column = column,
rowspan = rowspan, columnspan = columnspan,
sticky = W+E+N+S)
self.columnconfigure(column, weight = 10)
self.rowconfigure(row, weight = 10)
return canvas
def addScale(self, row, column, rowspan = 1, columnspan = 1,
command = lambda value: value, from_ = 0, to = 0,
label = "", length = 100, orient = HORIZONTAL,
resolution = 1, tickinterval = 0):
"""Creates and inserts a scale at the row and column,
and returns the scale."""
scale = tkinter.Scale(self, command = command, from_ = from_, to = to,
label = label, length = length,
orient = orient, resolution = resolution,
tickinterval = tickinterval, relief = "sunken",
borderwidth = 4)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
scale.grid(row = row, column = column, columnspan = columnspan,
rowspan = rowspan, sticky = N+S+E+W)
return scale
def addMenuBar(self, row, column, rowspan = 1, columnspan = 1,
orient = "horizontal"):
"""Creates and inserts a menu bar at the row and column,
and returns the menu bar."""
if not orient in ("horizontal", "vertical"):
raise ValueError("orient must be horizontal or vertical")
menuBar = EasyMenuBar(self, orient)
menuBar.grid(row = row, column = column,
rowspan = rowspan, columnspan = columnspan,
sticky = N+W)
return menuBar
def addCheckbutton(self, text, row, column,
rowspan = 1, columnspan = 1,
sticky = N+S+E+W, command = lambda : 0):
"""Creates and inserts check button at the row and column,
and returns the check button."""
cb = EasyCheckbutton(self, text, command)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
cb.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return cb
def addRadiobuttonGroup(self, row, column,
rowspan = 1, columnspan = 1, orient = VERTICAL):
"""Creates and returns a radio button group."""
return EasyRadiobuttonGroup(self, row, column, rowspan, columnspan, orient)
# Added 12-18-2012
def addPanel(self, row, column,
rowspan = 1, columnspan = 1, background = "white"):
"""Creates and returns a panel."""
return EasyPanel(self, row, column, rowspan, columnspan, background)
# Method to pop up a message box from this window.
def messageBox(self, title = "", message = "", width = 25, height = 5):
"""Creates and pops up a message box, with the given title,
message, and width and height in rows and columns of text."""
dlg = MessageBox(self, title, message, width, height)
return dlg.modified()
# Method to pop up a prompter box from this window.
def prompterBox(self, title = "", promptString = "", inputText = "", fieldWidth = 20):
"""Creates and pops up a prompter box, with the given title, prompt,
input text, and field width in columns of text.
Returns the text entered at the prompt."""
dlg = PrompterBox(self, title, promptString, inputText, fieldWidth)
return dlg.getText()
# Classes for easy widgets
class AbstractField(tkinter.Entry):
"""Represents common features of float fields, integer fields,
and text fields."""
def __init__(self, parent, value, width, state):
self.var = tkinter.StringVar()
self.setValue(value)
tkinter.Entry.__init__(self, parent,
textvariable = self.var,
width = width, state = state)
def setValue(self, value):
self.var.set(value)
def getValue(self):
return self.var.get()
class FloatField(AbstractField):
"""Represents a single line box for I/O of floats."""
def __init__(self, parent, value, width, precision, state):
self.setPrecision(precision)
AbstractField.__init__(self, parent, value, width, state)
def getNumber(self):
"""Returns the float contained in the field.
Raises: ValueError if number format is bad."""
return float(self.getValue())
def setNumber(self, number):
"""Replaces the float contained in the field."""
self.setValue(self._precision % number)
def setPrecision(self, precision):
"""Resets the precision for the display of a float."""
if precision and precision >= 0:
self._precision = "%0." + str(precision) + "f"
else:
self._precision = "%f"
class IntegerField(AbstractField):
"""Represents a single line box for I/O of integers."""
def __init__(self, parent, value, width, state):
AbstractField.__init__(self, parent, value, width, state)
def getNumber(self):
"""Returns the integer contained in the field.
Raises: ValueError if number format is bad."""
return int(self.getValue())
def setNumber(self, number):
"""Replaces the integer contained in the field."""
self.setValue(str(number))
class TextField(AbstractField):
"""Represents a single line box for I/O of strings."""
def __init__(self, parent, value, width, state):
AbstractField.__init__(self, parent, value, width, state)
def getText(self):
"""Returns the string contained in the field."""
return self.getValue()
def setText(self, text):
"""Replaces the string contained in the field."""
self.setValue(text)
class TextArea(tkinter.Text):
"""Represents a box for I/O of multiline text."""
def __init__(self, parent, text, width, height,
xscrollcommand, yscrollcommand, wrap):
tkinter.Text.__init__(self, parent,
width = width,
height = height,
wrap = wrap,
xscrollcommand = xscrollcommand,
yscrollcommand = yscrollcommand)
self.setText(text)
def getText(self):
"""Returns the string contained in the text area."""
return self.get("1.0", END)
def setText(self, text):
"""Replaces the string contained in the text area."""
self.delete("1.0", END)
self.insert("1.0", text)
def appendText(self, text):
"""Inserts the text after the string contained in
the text area."""
self.insert(END, text)
class EasyListbox(tkinter.Listbox):
"""Represents a list box."""
def __init__(self, parent, width, height, yscrollcommand, listItemSelected):
self._listItemSelected = listItemSelected
tkinter.Listbox.__init__(self, parent,
width = width, height = height,
yscrollcommand = yscrollcommand,
selectmode = SINGLE)
self.bind("<<ListboxSelect>>", self.triggerListItemSelected)
def triggerListItemSelected(self, event):
"""Strategy method to respond to an item selection in the list box.
Runs the client's listItemSelected method with the selected index if
there is one."""
if self.size() == 0: return
widget = event.widget
index = widget.curselection()[0]
self._listItemSelected(index)
def getSelectedIndex(self):
"""Returns the index of the selected item or -1 if no item
is selected."""
tup = self.curselection()
if len(tup) == 0:
return -1
else:
return int(tup[0])
def getSelectedItem(self):
"""Returns the selected item or the empty string if no item
is selected."""
index = self.getSelectedIndex()
if index == -1:
return ""
else:
return self.get(index)
def setSelectedIndex(self, index):
"""Selects the item at the index if it's in the range."""
if index < 0 or index >= self.size(): return
self.selection_set(index, index)
def clear(self):
"""Deletes all items from the list box."""
while self.size() > 0:
self.delete(0)
def getIndex(self, item):
"""Returns the index of item if it's in the list box,
or -1 otherwise."""
tup = self.get(0, self.size() - 1)
if item in tup:
return tup.index(item)
else:
return -1
class EasyRadiobuttonGroup(tkinter.Frame):
"""Represents a group of radio buttons, only one of which
is selected at any given time."""
def __init__(self, parent, row, column, rowspan, columnspan, orient):
tkinter.Frame.__init__(self, parent)
self.grid(row = row, column = column,
rowspan = rowspan, columnspan = columnspan,
sticky = N+S+E+W)
self._commonVar = tkinter.StringVar("")
self._buttons = dict()
self._orient = orient
self._buttonRow = self._buttonColumn = 0
def addRadiobutton(self, text, command = lambda : 0):
"""Creates a button with the given text and command, adds it to the group,
and returns the button."""
if text in self._buttons:
raise ValueError("Button with this label already in the group")
button = tkinter.Radiobutton(self, text = text, value = text,
command = command,
variable = self._commonVar)
self._buttons[text] = button
button.grid(row = self._buttonRow, column = self._buttonColumn, sticky = N+W)
if self._orient == VERTICAL:
self.rowconfigure(self._buttonRow, weight = 1)
self._buttonRow += 1
else:
self.columnconfigure(self._buttonColumn, weight = 1)
self._buttonColumn += 1
return button
def getSelectedButton(self):
if not self._commonVar.get() in self._buttons:
raise ValueError("No button has been selected yet.")
return self._buttons[self._commonVar.get()]
def setSelectedButton(self, button):
self._commonVar.set(button["value"])
class EasyCheckbutton(tkinter.Checkbutton):
"""Represents a check button."""
def __init__(self, parent, text, command):
self._variable = tkinter.IntVar()
tkinter.Checkbutton.__init__(self, parent, text = text,
variable = self._variable,
command = command)
def isChecked(self):
"""Returns True if the button is checked or
False otherwise."""
return self._variable.get() != 0
class EasyMenuBar(tkinter.Frame):
"""Represents a menu bar."""
def __init__(self, parent, orient):
self._orient = orient
self._row = self._column = 0
tkinter.Frame.__init__(self, parent, relief = RAISED, borderwidth = 1)
def addMenu(self, text, state = NORMAL):
"""Creates and inserts a menu into the
menubar, and returns the menu."""
menu = EasyMenubutton(self, text, state = state)
menu.grid(row = self._row, column = self._column)
if self._orient == "horizontal":
self._column += 1
else:
self._row += 1
return menu
class EasyMenubutton(tkinter.Menubutton):
"""Represents a menu button."""
def __init__(self, menuBar, text, state):
tkinter.Menubutton.__init__(self, menuBar,
text = text, state = state)
self.menu = tkinter.Menu(self)
self["menu"] = self.menu
self._currentIndex = -1
def addMenuItem(self, text, command, state = NORMAL):
"""Inserts a menu option in the given menu."""
self.menu.add_command(label = text, command = command, state = state)
self._currentIndex += 1
return EasyMenuItem(self, self._currentIndex)
class EasyMenuItem(object):
"""Represents an option in a drop-down menu."""
def __init__(self, menu, index):
self._menu = menu
self._index = index
def setState(self, state):
"""Sets the state of the item to state."""
self._menu.menu.entryconfigure(self._index, state = state)
class EasyCanvas(tkinter.Canvas):
"""Represents a rectangular area for interactive drawing of shapes.
Supports simple commands for drawing lines, rectangles, and ovals,
as well as methods for responding to mouse events in the canvas."""
def __init__(self, parent, width = None, height = None,
background = "white"):
tkinter.Canvas.__init__(self, parent,
width = width, height = height,
background = background)
self.bind("<Double-Button-1>", self.mouseDoubleClicked)
self.bind("<ButtonPress-1>", self.mousePressed)
self.bind("<ButtonRelease-1>", self.mouseReleased)
self.bind("<B1-Motion>", self.mouseDragged)
# Mouse event handling methods. One or more of these methods can
# be overridden in the subclass to implement the required actions.
# The event argument can be used to extract the current mouse
# cursor coordinates (event.x and event.y).
def mouseDoubleClicked(self, event):
"""Triggered when the mouse is
double-clicked in the area of this canvas."""
return
def mousePressed(self, event):
"""Triggered when the mouse is
pressed in the area of this canvas."""
return
def mouseReleased(self, event):
"""Triggered when the mouse is
released in the area of this canvas."""
return
def mouseDragged(self, event):
"""Triggered when the mouse is
dragged in the area of this canvas."""
return
def getWidth(self):
"""Returns the width of the canvas."""
return self["width"]
def getHeight(self):
"""Returns the height of the canvas."""
return self["height"]
def drawLine(self, x0, y0, x1, y1,
fill = "black", width = 1):
item = self.create_line(x0, y0, x1, y1)
self.itemconfig(item, fill = fill, width = width)
return item
def drawRectangle(self, x0, y0, x1, y1,
outline = "black", fill = None):
"""Draws a rectangle with the given corner points,
outline color, and fill color."""
item = self.create_rectangle(x0, y0, x1, y1)
self.itemconfig(item, outline = outline, fill = fill)
return item
def drawOval(self, x0, y0, x1, y1,
outline = "black", fill = None):
"""Draws an ovel within the given corner points,
with the given outline color and fill color."""
item = self.create_oval(x0, y0, x1, y1)
self.itemconfig(item, outline = outline, fill = fill)
return item
def drawText(self, text, x, y, fill = "black"):
"""Draws the given text (a string) at the given coordinates
with the given fill color. The string is centered vertically
and horizontally at the given coordinates."""
item = self.create_text(x, y)
self.itemconfig(item, text = text, fill = fill)
return item
def drawImage(self, image, x, y, anchor = CENTER):
"""Draws the given image (a PhotoImage) at the given coordinates.
The image is centered at the given coordinates by default."""
item = self.create_image(x, y, image = image,
anchor = anchor)
self.itemconfig(item, image = image, anchor = anchor)
return item
def deleteItem(self, item):
"""Removes and erases the shape with the given item
number from the canvas."""
self.delete(item)
# Support classes for dialogs.
class MessageBox(tkinter.simpledialog.Dialog):
"""Represents a message dialog with a scrollable text area."""
@classmethod
def message(cls, title = "", message = "", width = 25, height = 5):
MessageBox(tkinter.Frame(), title, message, width, height)
def __init__(self, parent, title, message, width, height):
"""Set up the window and widgets."""
self._message = message
self._width = width
self._height = height
self._modified = False
tkinter.simpledialog.Dialog.__init__(self, parent, title)
def body(self, master):
self.resizable(0, 0)
yScroll = tkinter.Scrollbar(master, orient = VERTICAL)
yScroll.grid(row = 0, column = 1, sticky = N+S)
output = tkinter.Text(master, width = self._width, height = self._height,
padx = 5, pady = 5, wrap = WORD,
yscrollcommand = yScroll.set)
output.grid(row = 0, column = 0, sticky = N+W+S+E)
output.insert("1.0", self._message)
output["state"] = DISABLED
yScroll["command"] = output.yview
return output
def buttonbox(self):
'''add standard button box.
override if you do not want the standard buttons'''
box = tkinter.Frame(self)
w = tkinter.Button(box, text="OK", width = 10,
command = self.ok, default = ACTIVE)
w.pack()
self.bind("<Return>", self.ok)
box.pack()
def apply(self):
"""Quits the dialog."""
self._modified = True
def modified(self):
return self._modified
class PrompterBox(tkinter.simpledialog.Dialog):
"""Represents an input dialog with a text field."""
@classmethod
def prompt(cls, title = "", promptString = "", inputText = "", fieldWidth = 20):
"""Creates and pops up an input dialog."""
dlg = PrompterBox(tkinter.Frame(), title, promptString, inputText, fieldWidth)
return dlg.getText()
def __init__(self, parent, title, promptString, inputText, fieldWidth):
"""Set up the window and widgets."""
self._prompt = promptString
self._text = inputText
self._width = fieldWidth
self._modified = False
tkinter.simpledialog.Dialog.__init__(self, parent, title)
def body(self, master):
self.resizable(0, 0)
label = tkinter.Label(master, text = self._prompt)
label.grid(row = 0, column = 0, padx = 5, sticky = N+W+S+E)
self._field = TextField(master, self._text, self._width, NORMAL)
self._field.grid(row = 1, column = 0, padx = 5, sticky = N+W+S+E)
return self._field
def buttonbox(self):
'''add standard button box.
override if you do not want the standard buttons'''
box = tkinter.Frame(self)
w = tkinter.Button(box, text="OK", width = 10,
command = self.ok, default = ACTIVE)
w.pack()
self.bind("<Return>", self.ok)
box.pack()
def apply(self):
"""Quits the dialog."""
self._modified = True
def modified(self):
return self._modified
def getText(self):
"""Returns the text currently in the text field."""
return self._field.getText()
class EasyDialog(tkinter.simpledialog.Dialog):
"""Represents a general-purpose dialog. Subclasses should include
body and apply methods."""
def __init__(self, parent, title = ""):
"""Set up the window and widgets."""
self._modified = False
tkinter.simpledialog.Dialog.__init__(self, parent, title)
def modified(self):
"""Returns the modified status of the dialog."""
return self._modified
def setModified(self):
self._modified = True
def addLabel(self, master, text, row, column,
columnspan = 1, rowspan = 1,
sticky = N+W, font = None):
"""Creates and inserts a label at the row and column,
and returns the label."""
label = tkinter.Label(master, text = text, font = font)
master.rowconfigure(row, weight = 1)
master.columnconfigure(column, weight = 1)
label.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return label
def addButton(self, master, text, row, column,
columnspan = 1, rowspan = 1,
command = lambda: None,
state = NORMAL):
"""Creates and inserts a button at the row and column,
and returns the button."""
button = tkinter.Button(master, text = text,
command = command, state = state)
master.rowconfigure(row, weight = 1)
master.columnconfigure(column, weight = 1)
button.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5)
return button
def addFloatField(self, master, value, row, column,
columnspan = 1, rowspan = 1,
width = 20, precision = None,
sticky = N+E, state = NORMAL):
"""Creates and inserts a float field at the row and column,
and returns the float field."""
field = FloatField(master, value, width, precision, state)
master.rowconfigure(row, weight = 1)
master.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return field
def addIntegerField(self, master, value, row, column,
columnspan = 1, rowspan = 1,
width = 10, sticky = N+E, state = NORMAL):
"""Creates and inserts an integer field at the row and column,
and returns the integer field."""
field = IntegerField(master, value, width, state)
master.rowconfigure(row, weight = 1)
master.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return field
def addTextField(self, master, text, row, column,
columnspan = 1, rowspan = 1,
width = 20, sticky = N+E, state = NORMAL):
"""Creates and inserts a text field at the row and column,
and returns the text field."""
field = TextField(master, text, width, state)
master.rowconfigure(row, weight = 1)
master.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return field
def addCheckbutton(self, master, text, row, column,
rowspan = 1, columnspan = 1,
sticky = N+S+E+W, command = lambda : 0):
"""Creates and inserts check button at the row and column,
and returns the check button."""
cb = EasyCheckbutton(master, text, command)
master.rowconfigure(row, weight = 1)
master.columnconfigure(column, weight = 1)
cb.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return cb
def addRadiobuttonGroup(self, master, row, column,
rowspan = 1, columnspan = 1, orient = VERTICAL):
"""Creates and returns a radio button group."""
return EasyRadiobuttonGroup(master, row, column, rowspan, columnspan, orient)
def addScale(self, master, row, column, rowspan = 1, columnspan = 1,
command = lambda value: value, from_ = 0, to = 0,
label = "", length = 100, orient = HORIZONTAL,
resolution = 1, tickinterval = 0):
"""Creates and inserts a scale at the row and column,
and returns the scale."""
scale = tkinter.Scale(master, command = command, from_ = from_, to = to,
label = label, length = length,
orient = orient, resolution = resolution,
tickinterval = tickinterval, relief = "sunken",
borderwidth = 4)
master.rowconfigure(row, weight = 1)
master.columnconfigure(column, weight = 1)
scale.grid(row = row, column = column, columnspan = columnspan,
rowspan = rowspan, sticky = N+S+E+W)
return scale
def addTextArea(self, master, text, row, column, rowspan = 1, columnspan = 1,
width = 80, height = 5, wrap = NONE):
"""Creates and inserts a multiline text area at the row and column,
and returns the text area. Vertical and horizontal scrollbars are
provided."""
frame = tkinter.Frame(master)
frame.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
sticky = N+S+E+W)
master.columnconfigure(column, weight = 1)
master.rowconfigure(row, weight = 1)
xScroll = tkinter.Scrollbar(frame, orient = HORIZONTAL)
xScroll.grid(row = 1, column = 0, sticky = E+W)
yScroll = tkinter.Scrollbar(frame, orient = VERTICAL)
yScroll.grid(row = 0, column = 1, sticky = N+S)
area = TextArea(frame, text, width, height,
xScroll.set, yScroll.set, wrap)
area.grid(row = 0, column = 0,
padx = 5, pady = 5, sticky = N+S+E+W)
frame.columnconfigure(0, weight = 1)
frame.rowconfigure(0, weight = 1)
xScroll["command"] = area.xview
yScroll["command"] = area.yview
return area
def addListbox(self, master, row, column, rowspan = 1, columnspan = 1,
width = 10, height = 5, listItemSelected = lambda index: index):
"""Creates and inserts a scrolling list box at the row and column, with a
width and height in lines and columns of text, and a default item selection
method, and returns the list box."""
frame = tkinter.Frame(master)
frame.grid(row = row, column = column, columnspan = columnspan, rowspan = rowspan,
sticky = N+S+E+W)
master.columnconfigure(column, weight = 1)
master.rowconfigure(row, weight = 1)
yScroll = tkinter.Scrollbar(frame, orient = VERTICAL)
yScroll.grid(row = 0, column = 1, sticky = N+S)
listBox = EasyListbox(frame, width, height, yScroll.set, listItemSelected)
listBox.grid(row = 0, column = 0, sticky = N+S+E+W)
frame.columnconfigure(0, weight = 1)
frame.rowconfigure(0, weight = 1)
yScroll["command"] = listBox.yview
return listBox
def addCanvas(self, master, canvas = None, row = 0, column = 0,
rowspan = 1, columnspan = 1, width = 200, height = 100,
background = "white"):
"""Creates and inserts a canvas at the row and column,
and returns the canvas."""
if not canvas:
canvas = EasyCanvas(master, width = width, height = height,
background = background)
canvas.grid(row = row, column = column,
rowspan = rowspan, columnspan = columnspan,
sticky = W+E+N+S)
master.columnconfigure(column, weight = 10)
master.rowconfigure(row, weight = 10)
return canvas
def addMenuBar(self, master, row, column, rowspan = 1, columnspan = 1,
orient = "horizontal"):
"""Creates and inserts a menu bar at the row and column,
and returns the menu bar."""
if not orient in ("horizontal", "vertical"):
raise ValueError("orient must be horizontal or vertical")
menuBar = EasyMenuBar(master, orient)
menuBar.grid(row = row, column = column,
rowspan = rowspan, columnspan = columnspan,
sticky = N+W)
return menuBar
def messageBox(self, title = "", message = "", width = 25, height = 5):
"""Creates and pops up a message box, with the given title,
message, and width and height in rows and columns of text."""
dlg = MessageBox(self, title, message, width, height)
return dlg.modified()
# Added 12-18-2012
def addPanel(self, master, row, column,
rowspan = 1, columnspan = 1, background = "white"):
"""Creates and returns a panel."""
return EasyPanel(master, row, column, rowspan, columnspan, background)
# Added 12-18-2012
class EasyPanel(tkinter.Frame):
"""Organizes a group of widgets in a panel (nested frame)."""
def __init__(self, parent, row, column, rowspan, columnspan, background):
tkinter.Frame.__init__(self, parent)
parent.rowconfigure(row, weight = 1)
parent.columnconfigure(column, weight = 1)
self.grid(row = row, column = column,
rowspan = rowspan, columnspan = columnspan,
sticky = N+S+E+W)
self.setBackground(background)
def setBackground(self, color):
"""Resets the panel's background color to color."""
self["background"] = color
def addButton(self, text, row, column,
columnspan = 1, rowspan = 1,
command = lambda: None,
state = NORMAL):
"""Creates and inserts a button at the row and column,
and returns the button."""
button = tkinter.Button(self, text = text,
command = command, state = state)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
button.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5)
return button
def addLabel(self, text, row, column,
columnspan = 1, rowspan = 1,
sticky = N+W, font = None,
background = "white", foreground = "black"):
"""Creates and inserts a label at the row and column,
and returns the label."""
label = tkinter.Label(self, text = text, font = font,
background = background,
foreground = foreground)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
label.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return label
def addFloatField(self, value, row, column,
columnspan = 1, rowspan = 1,
width = 20, precision = None,
sticky = N+E, state = NORMAL):
"""Creates and inserts a float field at the row and column,
and returns the float field."""
field = FloatField(self, value, width, precision, state)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,
columnspan = columnspan, rowspan = rowspan,
padx = 5, pady = 5, sticky = sticky)
return field
def addIntegerField(self, value, row, column,
columnspan = 1, rowspan = 1,
width = 10, sticky = N+E, state = NORMAL):
"""Creates and inserts an integer field at the row and column,
and returns the integer field."""
field = IntegerField(self, value, width, state)
self.rowconfigure(row, weight = 1)
self.columnconfigure(column, weight = 1)
field.grid(row = row, column = column,