123 lines
4.0 KiB
Python
Executable File
123 lines
4.0 KiB
Python
Executable File
# -*-mode: python; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
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#
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# $Id$
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#
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# Tix Demostration Program
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#
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# This sample program is structured in such a way so that it can be
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# executed from the Tix demo program "tixwidgets.py": it must have a
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# procedure called "RunSample". It should also have the "if" statment
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# at the end of this file so that it can be run as a standalone
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# program.
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# This file demonstrates the use of the tixControl widget -- it is an
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# entry widget with up/down arrow buttons. You can use the arrow buttons
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# to adjust the value inside the entry widget.
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#
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# This example program uses three Control widgets. One lets you select
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# integer values; one lets you select floating point values and the last
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# one lets you select a few names.
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import Tix
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TCL_ALL_EVENTS = 0
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def RunSample (root):
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control = DemoControl(root)
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control.mainloop()
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control.destroy()
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class DemoControl:
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def __init__(self, w):
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self.root = w
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self.exit = -1
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global demo_maker, demo_thrust, demo_num_engines
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demo_maker = Tix.StringVar()
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demo_thrust = Tix.DoubleVar()
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demo_num_engines = Tix.IntVar()
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demo_maker.set('P&W')
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demo_thrust.set(20000.0)
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demo_num_engines.set(2)
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top = Tix.Frame(w, bd=1, relief=Tix.RAISED)
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# $w.top.a allows only integer values
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#
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# [Hint] The -options switch sets the options of the subwidgets.
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# [Hint] We set the label.width subwidget option of the Controls to
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# be 16 so that their labels appear to be aligned.
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#
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a = Tix.Control(top, label='Number of Engines: ', integer=1,
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variable=demo_num_engines, min=1, max=4,
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options='entry.width 10 label.width 20 label.anchor e')
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b = Tix.Control(top, label='Thrust: ', integer=0,
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min='10000.0', max='60000.0', step=500,
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variable=demo_thrust,
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options='entry.width 10 label.width 20 label.anchor e')
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c = Tix.Control(top, label='Engine Maker: ', value='P&W',
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variable=demo_maker,
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options='entry.width 10 label.width 20 label.anchor e')
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# We can't define these in the init because the widget 'c' doesn't
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# exist yet and we need to reference it
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c['incrcmd'] = lambda w=c: adjust_maker(w, 1)
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c['decrcmd'] = lambda w=c: adjust_maker(w, -1)
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c['validatecmd'] = lambda w=c: validate_maker(w)
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a.pack(side=Tix.TOP, anchor=Tix.W)
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b.pack(side=Tix.TOP, anchor=Tix.W)
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c.pack(side=Tix.TOP, anchor=Tix.W)
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box = Tix.ButtonBox(w, orientation=Tix.HORIZONTAL)
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box.add('ok', text='Ok', underline=0, width=6,
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command=self.okcmd)
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box.add('cancel', text='Cancel', underline=0, width=6,
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command=self.quitcmd)
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box.pack(side=Tix.BOTTOM, fill=Tix.X)
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top.pack(side=Tix.TOP, fill=Tix.BOTH, expand=1)
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def okcmd (self):
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# tixDemo:Status "Selected %d of %s engines each of thrust %d", (demo_num_engines.get(), demo_maker.get(), demo_thrust.get())
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self.quitcmd()
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def quitcmd (self):
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self.exit = 0
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def mainloop(self):
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while self.exit < 0:
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self.root.tk.dooneevent(TCL_ALL_EVENTS)
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def destroy (self):
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self.root.destroy()
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maker_list = ['P&W', 'GE', 'Rolls Royce']
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def adjust_maker(w, inc):
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i = maker_list.index(demo_maker.get())
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i = i + inc
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if i >= len(maker_list):
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i = 0
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elif i < 0:
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i = len(maker_list) - 1
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# In Tcl/Tix we should return the string maker_list[i]. We can't
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# do that in Tkinter so we set the global variable. (This works).
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demo_maker.set(maker_list[i])
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def validate_maker(w):
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try:
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i = maker_list.index(demo_maker.get())
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except ValueError:
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# Works here though. Why ? Beats me.
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return maker_list[0]
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# Works here though. Why ? Beats me.
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return maker_list[i]
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if __name__ == '__main__':
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root = Tix.Tk()
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RunSample(root)
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