diff options
Diffstat (limited to 'Demo/tix/samples/Control.py')
-rwxr-xr-x | Demo/tix/samples/Control.py | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/Demo/tix/samples/Control.py b/Demo/tix/samples/Control.py new file mode 100755 index 0000000..b8e1156 --- /dev/null +++ b/Demo/tix/samples/Control.py @@ -0,0 +1,102 @@ +#!/usr/local/bin/python +# +# $Id$ +# +# Tix Demostration Program +# +# This sample program is structured in such a way so that it can be +# executed from the Tix demo program "tixwidgets": it must have a +# procedure called "RunSample". It should also have the "if" statment +# at the end of this file so that it can be run as a standalone +# program. + +# This file demonstrates the use of the tixControl widget -- it is an +# entry widget with up/down arrow buttons. You can use the arrow buttons +# to adjust the value inside the entry widget. +# +# This example program uses three Control widgets. One lets you select +# integer values; one lets you select floating point values and the last +# one lets you select a few names. +# +import Tix + +def RunSample(w): + global demo_maker, demo_thrust, demo_num_engines + + demo_maker = Tix.StringVar() + demo_thrust = Tix.DoubleVar() + demo_num_engines = Tix.IntVar() + demo_maker.set('P&W') + demo_thrust.set(20000.0) + demo_num_engines.set(2) + + top = Tix.Frame(w, bd=1, relief=Tix.RAISED) + + # $w.top.a allows only integer values + # + # [Hint] The -options switch sets the options of the subwidgets. + # [Hint] We set the label.width subwidget option of the Controls to + # be 16 so that their labels appear to be aligned. + # + a = Tix.Control(top, label='Number of Engines: ', integer=1, + variable=demo_num_engines, min=1, max=4, + options='entry.width 10 label.width 20 label.anchor e') + + b = Tix.Control(top, label='Thrust: ', integer=0, + min='10000.0', max='60000.0', step=500, + variable=demo_thrust, + options='entry.width 10 label.width 20 label.anchor e') + + c = Tix.Control(top, label='Engine Maker: ', value='P&W', + variable=demo_maker, + options='entry.width 10 label.width 20 label.anchor e') + + # We can't define these in the init because the widget 'c' doesn't + # exist yet and we need to reference it + c['incrcmd'] = lambda w=c: adjust_maker(w, 1) + c['decrcmd'] = lambda w=c: adjust_maker(w, -1) + c['validatecmd'] = lambda w=c: validate_maker(w) + + a.pack(side=Tix.TOP, anchor=Tix.W) + b.pack(side=Tix.TOP, anchor=Tix.W) + c.pack(side=Tix.TOP, anchor=Tix.W) + + box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL) + box.add('ok', text='Ok', underline=0, width=6, + command=lambda w=w: ok_command(w)) + box.add('cancel', text='Cancel', underline=0, width=6, + command=lambda w=w: w.destroy()) + box.pack(side=Tix.BOTTOM, fill=Tix.X) + top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1) + +maker_list = ['P&W', 'GE', 'Rolls Royce'] + +def adjust_maker(w, inc): + i = maker_list.index(demo_maker.get()) + i = i + inc + if i >= len(maker_list): + i = 0 + elif i < 0: + i = len(maker_list) - 1 + + # In Tcl/Tix we should return the string maker_list[i]. We can't + # do that in Tkinter so we set the global variable. (This works). + demo_maker.set(maker_list[i]) + +def validate_maker(w): + try: + i = maker_list.index(demo_maker.get()) + except: + # Works here though. Why ? Beats me. + return maker_list[0] + # Works here though. Why ? Beats me. + return maker_list[i] + +def ok_command(w): + print "Selected", demo_num_engines.get(), "of", demo_maker.get(), " engines each of thrust", demo_thrust.get() + w.destroy() + +if __name__ == '__main__': + root = Tix.Tk() + RunSample(root) + root.mainloop() |