mirror of https://github.com/python/cpython.git
119 lines
2.5 KiB
Python
119 lines
2.5 KiB
Python
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# Module 'gwin'
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# Generic stdwin windows
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# This is used as a base class from which to derive other window types.
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# The mainloop() function here is an event dispatcher for all window types.
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import stdwin
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import stdwinsupport
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S = stdwinsupport # Shorthand
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windows = [] # List of open windows
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# Open a window
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def open(title): # Open a generic window
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w = stdwin.open(title)
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stdwin.setdefwinsize(0, 0)
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# Set default event handlers
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w.draw = nop
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w.char = nop
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w.mdown = nop
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w.mmove = nop
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w.mup = nop
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w.m2down = m2down
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w.m2up = m2up
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w.size = nop
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w.move = nop
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w.activate = w.deactivate = nop
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w.timer = nop
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# default command handlers
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w.close = close
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w.tab = tab
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w.enter = enter
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w.backspace = backspace
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w.arrow = arrow
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w.kleft = w.kup = w.kright = w.kdown = nop
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windows.append(w)
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return w
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# Generic event dispatching
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def mainloop(): # Handle events until no windows left
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while windows:
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treatevent(stdwin.getevent())
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def treatevent(e): # Handle a stdwin event
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type, w, detail = e
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if type = S.we_draw:
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w.draw(w, detail)
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elif type = S.we_menu:
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m, item = detail
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m.action[item](w, m, item)
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elif type = S.we_command:
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treatcommand(w, detail)
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elif type = S.we_char:
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w.char(w, detail)
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elif type = S.we_mouse_down:
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if detail[1] > 1: w.m2down(w, detail)
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else: w.mdown(w, detail)
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elif type = S.we_mouse_move:
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w.mmove(w, detail)
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elif type = S.we_mouse_up:
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if detail[1] > 1: w.m2up(w, detail)
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else: w.mup(w, detail)
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elif type = S.we_size:
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w.size(w, w.getwinsize())
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elif type = S.we_activate:
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w.activate(w)
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elif type = S.we_deactivate:
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w.deactivate(w)
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elif type = S.we_move:
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w.move(w)
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elif type = S.we_timer:
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w.timer(w)
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def treatcommand(w, type): # Handle a we_command event
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if type = S.wc_close:
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w.close(w)
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elif type = S.wc_return:
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w.enter(w)
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elif type = S.wc_tab:
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w.tab(w)
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elif type = S.wc_backspace:
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w.backspace(w)
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elif type in (S.wc_left, S.wc_up, S.wc_right, S.wc_down):
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w.arrow(w, type)
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# Methods
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def close(w): # Close method
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for i in range(len(windows)):
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if windows[i] is w:
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del windows[i]
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break
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def arrow(w, detail): # Arrow key method
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if detail = S.wc_left:
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w.kleft(w)
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elif detail = S.wc_up:
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w.kup(w)
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elif detail = S.wc_right:
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w.kright(w)
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elif detail = S.wc_down:
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w.kdown(w)
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# Trivial methods
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def tab(w): w.char(w, '\t')
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def enter(w): w.char(w, '\n') # 'return' is a Python reserved word
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def backspace(w): w.char(w, '\b')
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def m2down(w, detail): w.mdown(w, detail)
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def m2up(w, detail): w.mup(w, detail)
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def nop(args): pass
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