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Text File | 1990-10-13 | 1.2 KB | 48 lines | [TEXT/R*ch] |
- # Module 'listwin'
- # List windows, a subclass of gwin
-
- import gwin
- import stdwin
-
- def maxlinewidth(a): # Compute maximum textwidth of lines in a sequence
- max = 0
- for line in a:
- width = stdwin.textwidth(line)
- if width > max: max = width
- return max
-
- def action(w, string, i, detail): # Default item selection method
- pass
-
- def mup(w, detail): # Mouse up method
- (h, v), clicks, button, mask = detail
- i = divmod(v, w.lineheight)[0]
- if 0 <= i < len(w.data):
- w.action(w, w.data[i], i, detail)
-
- def draw(w, ((left, top), (right, bottom))): # Text window draw method
- data = w.data
- d = w.begindrawing()
- lh = w.lineheight
- itop = top/lh
- ibot = (bottom-1)/lh + 1
- if itop < 0: itop = 0
- if ibot > len(data): ibot = len(data)
- for i in range(itop, ibot): d.text((0, i*lh), data[i])
-
- def open(title, data): # Display a list of texts in a window
- lineheight = stdwin.lineheight()
- h, v = maxlinewidth(data), len(data)*lineheight
- h0, v0 = h + stdwin.textwidth(' '), v + lineheight
- if h0 > stdwin.textwidth(' ')*80: h0 = 0
- if v0 > stdwin.lineheight()*24: v0 = 0
- stdwin.setdefwinsize(h0, v0)
- w = gwin.open(title)
- w.setdocsize(h, v)
- w.lineheight = lineheight
- w.data = data
- w.draw = draw
- w.action = action
- w.mup = mup
- return w
-