/usr/share/doc/python-pmw-doc/examples/ScrolledCanvas.py is in python-pmw-doc 1.3.2-6build1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 | title = 'Pmw.ScrolledCanvas demonstration'
# Import Pmw from this directory tree.
import sys
sys.path[:0] = ['../../..']
import Tkinter
import Pmw
class Demo:
def __init__(self, parent):
# Create the ScrolledCanvas.
self.sc = Pmw.ScrolledCanvas(parent,
borderframe = 1,
labelpos = 'n',
label_text = 'ScrolledCanvas',
usehullsize = 1,
hull_width = 400,
hull_height = 300,
)
# Create a group widget to contain the scrollmode options.
w = Pmw.Group(parent, tag_text='Scroll mode')
w.pack(side = 'bottom', padx = 5, pady = 5)
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 = 5)
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 = 5)
vmode.invoke('dynamic')
buttonBox = Pmw.ButtonBox(parent)
buttonBox.pack(side = 'bottom')
buttonBox.add('yview', text = 'Show\nyview', command = self.showYView)
buttonBox.add('scroll', text = 'Page\ndown', command = self.pageDown)
buttonBox.add('center', text = 'Center', command = self.centerPage)
# Pack this last so that the buttons do not get shrunk when
# the window is resized.
self.sc.pack(padx = 5, pady = 5, fill = 'both', expand = 1)
self.sc.component('canvas').bind('<1>', self.addcircle)
testEntry = Tkinter.Entry(parent)
self.sc.create_line(20, 20, 100, 100)
self.sc.create_oval(100, 100, 200, 200, fill = 'green')
self.sc.create_text(100, 20, anchor = 'nw',
text = 'Click in the canvas\nto draw ovals',
font = testEntry.cget('font'))
button = Tkinter.Button(self.sc.interior(),
text = 'Hello,\nWorld!\nThis\nis\na\nbutton.')
self.sc.create_window(200, 200,
anchor='nw',
window = button)
# Set the scroll region of the canvas to include all the items
# just created.
self.sc.resizescrollregion()
self.colours = ('red', 'green', 'blue', 'yellow', 'cyan', 'magenta',
'black', 'white')
self.oval_count = 0
self.rand = 12345
def sethscrollmode(self, tag):
self.sc.configure(hscrollmode = tag)
def setvscrollmode(self, tag):
self.sc.configure(vscrollmode = tag)
def addcircle(self, event):
x = self.sc.canvasx(event.x)
y = self.sc.canvasy(event.y)
width = 10 + self.random() % 100
height = 10 + self.random() % 100
self.sc.create_oval(
x - width, y - height, x + width, y + height,
fill = self.colours[self.oval_count])
self.oval_count = (self.oval_count + 1) % len(self.colours)
self.sc.resizescrollregion()
# Simple random number generator.
def random(self):
self.rand = (self.rand * 125) % 2796203
return self.rand
def showYView(self):
print self.sc.yview()
def pageDown(self):
self.sc.yview('scroll', 1, 'page')
def centerPage(self):
top, bottom = self.sc.yview()
size = bottom - top
middle = 0.5 - size / 2
self.sc.yview('moveto', middle)
######################################################################
# Create demo in root window for testing.
if __name__ == '__main__':
root = Tkinter.Tk()
Pmw.initialise(root)
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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