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title = 'Pmw.ScrolledFrame demonstration'
# Import Pmw from this directory tree.
import sys
sys.path[:0] = ['../../..']
import Tkinter
import Pmw
class Demo:
def __init__(self, parent):
# Create the ScrolledFrame.
self.sf = Pmw.ScrolledFrame(parent,
labelpos = 'n', label_text = 'ScrolledFrame',
usehullsize = 1,
hull_width = 400,
hull_height = 220,
)
# Create a group widget to contain the flex options.
w = Pmw.Group(parent, tag_text='Flex')
w.pack(side = 'bottom', padx = 5, pady = 3)
hflex = Pmw.OptionMenu(w.interior(),
labelpos = 'w',
label_text = 'Horizontal:',
items = ['fixed', 'expand', 'shrink', 'elastic'],
command = self.sethflex,
menubutton_width = 8,
)
hflex.pack(side = 'left', padx = 5, pady = 3)
hflex.invoke('fixed')
vflex = Pmw.OptionMenu(w.interior(),
labelpos = 'w',
label_text = 'Vertical:',
items = ['fixed', 'expand', 'shrink', 'elastic'],
command = self.setvflex,
menubutton_width = 8,
)
vflex.pack(side = 'left', padx = 5, pady = 3)
vflex.invoke('fixed')
# Create a group widget to contain the scrollmode options.
w = Pmw.Group(parent, tag_text='Scroll mode')
w.pack(side = 'bottom', padx = 5, pady = 0)
hmode = Pmw.OptionMenu(w.interior(),
labelpos = 'w',
label_text = 'Horizontal:',
items = ['none', 'static', 'dynamic'],
command = self.sethscrollmode,
menubutton_width = 8,
)
hmode.pack(side = 'left', padx = 5, pady = 3)
hmode.invoke('dynamic')
vmode = Pmw.OptionMenu(w.interior(),
labelpos = 'w',
label_text = 'Vertical:',
items = ['none', 'static', 'dynamic'],
command = self.setvscrollmode,
menubutton_width = 8,
)
vmode.pack(side = 'left', padx = 5, pady = 3)
vmode.invoke('dynamic')
self.radio = Pmw.RadioSelect(parent, selectmode = 'multiple',
command = self.radioSelected)
self.radio.add('center', text = 'Keep centered vertically')
self.radio.pack(side = 'bottom')
buttonBox = Pmw.ButtonBox(parent)
buttonBox.pack(side = 'bottom')
buttonBox.add('add', text = 'Add a button', command = self.addButton)
buttonBox.add('yview', text = 'Show yview', command = self.showYView)
buttonBox.add('scroll', text = 'Page down', command = self.pageDown)
# Pack this last so that the buttons do not get shrunk when
# the window is resized.
self.sf.pack(padx = 5, pady = 3, fill = 'both', expand = 1)
self.frame = self.sf.interior()
self.row = 0
self.col = 0
for count in range(15):
self.addButton()
def sethscrollmode(self, tag):
self.sf.configure(hscrollmode = tag)
def setvscrollmode(self, tag):
self.sf.configure(vscrollmode = tag)
def sethflex(self, tag):
self.sf.configure(horizflex = tag)
def setvflex(self, tag):
self.sf.configure(vertflex = tag)
def addButton(self):
button = Tkinter.Button(self.frame,
text = '(%d,%d)' % (self.col, self.row))
button.grid(row = self.row, column = self.col, sticky = 'nsew')
self.frame.grid_rowconfigure(self.row, weight = 1)
self.frame.grid_columnconfigure(self.col, weight = 1)
if self.sf.cget('horizflex') == 'expand' or \
self.sf.cget('vertflex') == 'expand':
self.sf.reposition()
if 'center' in self.radio.getcurselection():
self.sf.update_idletasks()
self.centerPage()
if self.col == self.row:
self.col = 0
self.row = self.row + 1
else:
self.col = self.col + 1
def showYView(self):
print self.sf.yview()
def pageDown(self):
self.sf.yview('scroll', 1, 'page')
def radioSelected(self, name, state):
if state:
self.centerPage()
def centerPage(self):
# Example of how to use the yview() method of Pmw.ScrolledFrame.
top, bottom = self.sf.yview()
size = bottom - top
middle = 0.5 - size / 2
self.sf.yview('moveto', middle)
######################################################################
# Create demo in root window for testing.
if __name__ == '__main__':
import os
if os.name == 'nt':
size = 16
else:
size = 12
root = Tkinter.Tk()
Pmw.initialise(root, size = size, fontScheme = 'pmw2')
root.title(title)
exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy)
exitButton.pack(side = 'bottom')
widget = Demo(root)
root.mainloop()
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