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48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
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# Module 'listwin'
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# List windows, a subclass of gwin
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import gwin
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import stdwin
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def maxlinewidth(a): # Compute maximum textwidth of lines in a sequence
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max = 0
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for line in a:
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width = stdwin.textwidth(line)
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if width > max: max = width
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return max
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def action(w, string, i, detail): # Default item selection method
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pass
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def mup(w, detail): # Mouse up method
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(h, v), clicks, button, mask = detail
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i = divmod(v, w.lineheight)[0]
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if 0 <= i < len(w.data):
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w.action(w, w.data[i], i, detail)
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def draw(w, ((left, top), (right, bottom))): # Text window draw method
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data = w.data
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d = w.begindrawing()
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lh = w.lineheight
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itop = top/lh
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ibot = (bottom-1)/lh + 1
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if itop < 0: itop = 0
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if ibot > len(data): ibot = len(data)
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for i in range(itop, ibot): d.text((0, i*lh), data[i])
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def open(title, data): # Display a list of texts in a window
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lineheight = stdwin.lineheight()
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h, v = maxlinewidth(data), len(data)*lineheight
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h0, v0 = h + stdwin.textwidth(' '), v + lineheight
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if h0 > stdwin.textwidth(' ')*80: h0 = 0
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if v0 > stdwin.lineheight()*24: v0 = 0
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stdwin.setdefwinsize(h0, v0)
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w = gwin.open(title)
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w.setdocsize(h, v)
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w.lineheight = lineheight
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w.data = data
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w.draw = draw
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w.action = action
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w.mup = mup
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return w
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