File: PmwPanedWidget.py.html

package info (click to toggle)
python-pmw 0.6.2-0.1
  • links: PTS
  • area: main
  • in suites: hamm
  • size: 1,652 kB
  • ctags: 2,716
  • sloc: python: 10,720; makefile: 44; sh: 24
file content (553 lines) | stat: -rw-r--r-- 16,540 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
<!DOCTYPE HTML PUBLIC "-//Netscape_Microsoft//DTD HTML 3.0//EN">
<HTML>

<!-- This file generated using the Python HTMLgen module. -->
<HEAD>
  <META NAME="GENERATOR" CONTENT="HTMLgen 1.1">
        <TITLE>PmwPanedWidget.py</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF">
<PRE>
<FONT COLOR="#DD0000"># PanedWidget</FONT>
<FONT COLOR="#DD0000"># a frame which may contain several resizable sub-frames</FONT>

import sys
import types
import Tkinter
import Pmw

<STRONG><FONT COLOR="#CC6600">class PanedWidget</FONT></STRONG>(Pmw.MegaWidget):

<STRONG>    def __init__</STRONG>(self, parent = None, **kw):

	<FONT COLOR="#DD0000"># Define the megawidget options.</FONT>
	INITOPT = Pmw.INITOPT
	optiondefs = (
	    (<FONT COLOR="#009900">'command'</FONT>,           None,         None),
	    (<FONT COLOR="#009900">'orient'</FONT>,            <FONT COLOR="#009900">'vertical'</FONT>,   INITOPT),
	    (<FONT COLOR="#009900">'separatorrelief'</FONT>,   <FONT COLOR="#009900">'sunken'</FONT>,     INITOPT),
	)
	self.defineoptions(kw, optiondefs)

	<FONT COLOR="#DD0000"># Initialise the base class (after defining the options).</FONT>
	Pmw.MegaWidget.__init__(self, parent)

	self.bind(<FONT COLOR="#009900">'&lt;Configure&gt;'</FONT>, self._handleConfigure)

	self._timerId = None
	self._item = []
	self._frame = {}
	self._separator = []
	self._button = []
	self._totalSize = 0
	self._movePending = 0
	self._relsize = {}
	self._relmin = {}
	self._relmax = {}
	self._size = {}
	self._min = {}
	self._max = {}
	self._rootp = None
	self._curSize = None
	self._beforeLimit = None
	self._afterLimit = None
	self._buttonIsDown = 0
	self._majorSize = 100
	self._minorSize = 100

	<FONT COLOR="#DD0000"># Check keywords and initialise options.</FONT>
	self.initialiseoptions(PanedWidget)

<STRONG>    def insert</STRONG>(self, name, before = 0, **kw):
	<FONT COLOR="#DD0000"># Set defaults.</FONT>
	self._size[name] = 0
	self._relsize[name] = None
	self._min[name] = 0
	self._relmin[name] = None
	self._max[name] = 100000
	self._relmax[name] = None

	<FONT COLOR="#DD0000"># Parse &lt;kw&gt; for options.</FONT>
	self._parseOptions(name, kw)

	insertPos = self._nameToIndex(before)
	atEnd = (insertPos == len(self._item))

	<FONT COLOR="#DD0000"># Add the frame.</FONT>
	self._item[insertPos:insertPos] = [name]
	self._frame[name] = self.createcomponent(name,
		(), <FONT COLOR="#009900">'Frame'</FONT>,
		Tkinter.Frame, (self.interior(),))

	<FONT COLOR="#DD0000"># Add separator, if necessary.</FONT>
	if len(self._item) > 1:
	    self._addSeparator()
	else:
	    self._separator.append(None)
	    self._button.append(None)

	<FONT COLOR="#DD0000"># Add the new frame and adjust the PanedWidget</FONT>
	if atEnd:
	    size = self._size[name]
	    if size > 0 or self._relsize[name] is not None:
		if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
		    self._frame[name].place(x=0, relwidth=1, 
					    height=size, y=self._totalSize)
		else:
		    self._frame[name].place(y=0, relheight=1, 
					    width=size, x=self._totalSize)
	    else:
		if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
		    self._frame[name].place(x=0, relwidth=1, 
					    y=self._totalSize)
		else:
		    self._frame[name].place(y=0, relheight=1, 
					    x=self._totalSize)
	else:
	    self._updateSizes()

	self._totalSize = self._totalSize + self._size[name]
	return self._frame[name] 
    
<STRONG>    def add</STRONG>(self, name, **kw):
        return apply(self.insert, (name, len(self._item)), kw)

<STRONG>    def remove</STRONG>(self, name):
	removePos = self._nameToIndex(name)
	name = self._item[removePos]
	self.destroycomponent(name)
	del self._item[removePos]
	del self._frame[name]
	del self._size[name]
	del self._min[name]
	del self._max[name]
	del self._relsize[name]
	del self._relmin[name]
	del self._relmax[name]

	last = len(self._item)
	del self._separator[last]
	del self._button[last]
	self.destroycomponent(self._sepName(last))
	self.destroycomponent(self._buttonName(last))

	self._plotHandles()

<STRONG>    def _nameToIndex</STRONG>(self, name):

	try:
	    pos = self._item.index(name)
	except:
	    sys.exc_traceback = None   <FONT COLOR="#DD0000"># Clean up object references</FONT>
	    pos = name

	return pos

<STRONG>    def _parseOptions</STRONG>(self, name, args):
	<FONT COLOR="#DD0000"># Parse &lt;args&gt; for options.</FONT>
	for arg, value in args.items():
	    if type(value) == types.FloatType:
		relvalue = value
		value = self._absSize(relvalue)
	    else:
		relvalue = None

	    if arg == <FONT COLOR="#009900">'size'</FONT>:
		self._size[name], self._relsize[name] = value, relvalue
	    elif arg == <FONT COLOR="#009900">'min'</FONT>:
		self._min[name], self._relmin[name] = value, relvalue
	    elif arg == <FONT COLOR="#009900">'max'</FONT>:
		self._max[name], self._relmax[name] = value, relvalue
	    else:
		raise ValueError, <FONT COLOR="#009900">'keyword must be "size", "min", or "max"'</FONT>

<STRONG>    def _absSize</STRONG>(self, relvalue):
	return int(round(relvalue * self._majorSize))

<STRONG>    def _sepName</STRONG>(self, n):
	return <FONT COLOR="#009900">'separator-%d'</FONT> % n

<STRONG>    def _buttonName</STRONG>(self, n):
	return <FONT COLOR="#009900">'handle-%d'</FONT> % n

<STRONG>    def _addSeparator</STRONG>(self):
	n = len(self._item) - 1

	downFunc = lambda event, s = self, num=n: s._btnDown(event, num)
	upFunc = lambda event, s = self, num=n: s._btnUp(event, num)
	moveFunc = lambda event, s = self, num=n: s._btnMove(event, num)

	<FONT COLOR="#DD0000"># Create the line dividing the panes.</FONT>
	sep = self.createcomponent(self._sepName(n),
		(), <FONT COLOR="#009900">'Separator'</FONT>,
		Tkinter.Frame, (self.interior(),),
		borderwidth = 1,
		relief = self[<FONT COLOR="#009900">'separatorrelief'</FONT>])
	self._separator.append(sep)

	sep.bind(<FONT COLOR="#009900">'&lt;ButtonPress-1&gt;'</FONT>, downFunc)
	sep.bind(<FONT COLOR="#009900">'&lt;Any-ButtonRelease-1&gt;'</FONT>, upFunc)
	sep.bind(<FONT COLOR="#009900">'&lt;B1-Motion&gt;'</FONT>, moveFunc)

	if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
	    cursor = <FONT COLOR="#009900">'sb_v_double_arrow'</FONT>
	    sep.configure(height = 2, width = 10000, cursor = cursor)
	else:
	    cursor = <FONT COLOR="#009900">'sb_h_double_arrow'</FONT>
	    sep.configure(width = 2, height = 10000, cursor = cursor)

	self._totalSize = self._totalSize + 2

	<FONT COLOR="#DD0000"># Create the handle on the dividing line.</FONT>
	handle = self.createcomponent(self._buttonName(n),
		(), <FONT COLOR="#009900">'Handle'</FONT>,
		Tkinter.Frame, (self.interior(),),
		    relief = <FONT COLOR="#009900">'raised'</FONT>,
		    borderwidth = 1,
		    width = 8,
		    height = 8,
		    cursor = cursor,
		)
	self._button.append(handle)

	handle.bind(<FONT COLOR="#009900">'&lt;ButtonPress-1&gt;'</FONT>, downFunc)
	handle.bind(<FONT COLOR="#009900">'&lt;Any-ButtonRelease-1&gt;'</FONT>, upFunc)
	handle.bind(<FONT COLOR="#009900">'&lt;B1-Motion&gt;'</FONT>, moveFunc)

	self._plotHandles()

	for i in range(1, len(self._item)):
	    self._separator[i].tkraise()
	for i in range(1, len(self._item)):
	    self._button[i].tkraise()

<STRONG>    def _btnUp</STRONG>(self, event, item):
	self._buttonIsDown = 0
	self._updateSizes()
	try:
	    self._button[item].configure(relief=<FONT COLOR="#009900">'raised'</FONT>)
	except:
	    sys.exc_traceback = None   <FONT COLOR="#DD0000"># Clean up object references</FONT>

<STRONG>    def _btnDown</STRONG>(self, event, item):
	self._button[item].configure(relief=<FONT COLOR="#009900">'sunken'</FONT>)
	self._getMotionLimit(item)
	self._buttonIsDown = 1
	self._movePending = 0

<STRONG>    def _handleConfigure</STRONG>(self, event = None):
	self._getNaturalSizes()
	if self._totalSize == 0:
	    return

	iterRange = list(self._item)
	iterRange.reverse()
	if self._majorSize > self._totalSize:
	    n = self._majorSize - self._totalSize
	    self._iterate(iterRange, self._grow, n)
	elif self._majorSize < self._totalSize:
	    n = self._totalSize - self._majorSize
	    self._iterate(iterRange, self._shrink, n)

	self._plotHandles()
	self._updateSizes()

<STRONG>    def _getNaturalSizes</STRONG>(self):
	<FONT COLOR="#DD0000"># must call this in order to get correct reqwidth, reqheight</FONT>
	self.update_idletasks()

	self._totalSize = 0

	if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
	    self._majorSize = self.winfo_height()
	    self._minorSize = self.winfo_width()
	    majorspec = Tkinter.Frame.winfo_reqheight
	else:
	    self._majorSize = self.winfo_width()
	    self._minorSize = self.winfo_height()
	    majorspec = Tkinter.Frame.winfo_reqwidth

	if self._majorSize < 0:
	    self._majorSize = 0
	if self._minorSize < 0:
	    self._minorSize = 0

	for name in self._item:
	    <FONT COLOR="#DD0000"># adjust the absolute sizes first...</FONT>
	    if self._relsize[name] is None:
		<FONT COLOR="#DD0000">#special case</FONT>
		if self._size[name] == 0:
		    self._size[name] = apply(majorspec, (self._frame[name],))
		    self._setrel(name)
	    else:
		self._size[name] = self._absSize(self._relsize[name])

	    if self._relmin[name] is not None:
		self._min[name] = self._absSize(self._relmin[name])
	    if self._relmax[name] is not None:
		self._max[name] = self._absSize(self._relmax[name])

	    <FONT COLOR="#DD0000"># now adjust sizes</FONT>
	    if self._size[name] < self._min[name]:
		self._size[name] = self._min[name]
		self._setrel(name)
	    
	    if self._size[name] > self._max[name]:
		self._size[name] = self._max[name]
		self._setrel(name)
	    
	    self._totalSize = self._totalSize + self._size[name]

	<FONT COLOR="#DD0000"># adjust for separators</FONT>
	self._totalSize = self._totalSize + len(self._item) * 2 - 2

<STRONG>    def _setrel</STRONG>(self, name):
	if self._relsize[name] is not None:
	    if self._majorSize != 0:
		self._relsize[name] = round(self._size[name]) / self._majorSize

<STRONG>    def _iterate</STRONG>(self, names, proc, n):
	for i in names:
	    n = apply(proc, (i, n))
	    if n == 0:
		break

<STRONG>    def _grow</STRONG>(self, name, n):
	canGrow = self._max[name] - self._size[name]

	if canGrow > n:
	    self._size[name] = self._size[name] + n
	    self._setrel(name)
	    return 0
	elif canGrow > 0:
	    self._size[name] = self._max[name]
	    self._setrel(name)
	    n = n - canGrow

	return n

<STRONG>    def _shrink</STRONG>(self, name, n):
	canShrink = self._size[name] - self._min[name]

	if canShrink > n:
	    self._size[name] = self._size[name] - n
	    self._setrel(name)
	    return 0
	elif canShrink > 0:
	    self._size[name] = self._min[name]
	    self._setrel(name)
	    n = n - canShrink

	return n

<STRONG>    def _updateSizes</STRONG>(self):
	totalSize = 0

	for name in self._item:
	    size = self._size[name]
	    if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
		self._frame[name].place(x = 0, relwidth = 1, 
					y = totalSize,
					height = size)
	    else:
		self._frame[name].place(y = 0, relheight = 1, 
					x = totalSize,
					width = size)

	    totalSize = totalSize + size + 2

	<FONT COLOR="#DD0000"># Invoke the callback command</FONT>
	cmd = self[<FONT COLOR="#009900">'command'</FONT>]
	if callable(cmd):
	    cmd(map(lambda x, s = self: s._size[x], self._item))

<STRONG>    def _plotHandles</STRONG>(self):
	if len(self._item) == 0:
	    return

	if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
	    btnp = self._minorSize - 13
	else:
	    h = self._minorSize
	    
	    if h > 18:
		btnp = 9
	    else:
		btnp = h - 9

	firstPane = self._item[0]
	totalSize = self._size[firstPane]

	first = 1
	last = len(self._item) - 1

	<FONT COLOR="#DD0000"># loop from first to last, inclusive</FONT>
	for i in range(1, last + 1):

	    handlepos = totalSize - 3
	    prevSize = self._size[self._item[i - 1]]
	    nextSize = self._size[self._item[i]]

	    offset1 = 0

	    if i == first:
		if prevSize < 4:
		    offset1 = 4 - prevSize
	    else:
		if prevSize < 8:
		    offset1 = (8 - prevSize) / 2

	    offset2 = 0

	    if i == last:
		if nextSize < 4:
		    offset2 = nextSize - 4
	    else:
		if nextSize < 8:
		    offset2 = (nextSize - 8) / 2

	    handlepos = handlepos + offset1
	    
	    if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
		height = 8 - offset1 + offset2

		if height > 1:
		    self._button[i].configure(height = height)
		    self._button[i].place(x = btnp, y = handlepos)
		else:
		    self._button[i].place_forget()

		self._separator[i].place(x = 0, y = totalSize, 
					 relwidth = 1)
	    else:
		width = 8 - offset1 + offset2

		if width > 1:
		    self._button[i].configure(width = width)
		    self._button[i].place(y = btnp, x = handlepos)
		else:
		    self._button[i].place_forget()

		self._separator[i].place(y = 0, x = totalSize, 
					 relheight = 1)

	    totalSize = totalSize + nextSize + 2

<STRONG>    def pane</STRONG>(self, name):
	return self._frame[self._item[self._nameToIndex(name)]]

    <FONT COLOR="#DD0000"># Return the name of all panes</FONT>
<STRONG>    def panes</STRONG>(self):
	return list(self._item)

<STRONG>    def configurepane</STRONG>(self, name, **kw):
	name = self._item[self._nameToIndex(name)]
	self._parseOptions(name, kw)
	self._handleConfigure()

<STRONG>    def _getMotionLimit</STRONG>(self, item):
	curBefore = item * 2 - 2
	minBefore, maxBefore = curBefore, curBefore

	for name in self._item[:item]:
	    curBefore = curBefore + self._size[name]
	    minBefore = minBefore + self._min[name]
	    maxBefore = maxBefore + self._max[name]

	curAfter = (len(self._item) - item) * 2
	minAfter, maxAfter = curAfter, curAfter
	for name in self._item[item:]:
	    curAfter = curAfter + self._size[name]
	    minAfter = minAfter + self._min[name]
	    maxAfter = maxAfter + self._max[name]

	beforeToGo = min(curBefore - minBefore, maxAfter - curAfter)
	afterToGo = min(curAfter - minAfter, maxBefore - curBefore)

	self._beforeLimit = curBefore - beforeToGo
	self._afterLimit = curBefore + afterToGo
	self._curSize = curBefore

	self._plotHandles()

    <FONT COLOR="#DD0000"># Compress the motion so that update is quick even on slow machines</FONT>
    <FONT COLOR="#DD0000">#</FONT>
    <FONT COLOR="#DD0000"># theRootp = root position (either rootx or rooty)</FONT>
<STRONG>    def _btnMove</STRONG>(self, event, item):
	self._rootp = event

	if self._movePending == 0:
	    self._timerId = self.after_idle(
		    lambda s = self, i = item: s._btnMoveCompressed(i))
	    self._movePending = 1

<STRONG>    def destroy</STRONG>(self):
        if self._timerId is not None:
          self.after_cancel(self._timerId)
	  self._timerId = None
        Pmw.MegaWidget.destroy(self)

<STRONG>    def _btnMoveCompressed</STRONG>(self, item):
	if not self._buttonIsDown:
	    return

	if self[<FONT COLOR="#009900">'orient'</FONT>] == <FONT COLOR="#009900">'vertical'</FONT>:
	    p = self._rootp.y_root - self.winfo_rooty()
	else:
	    p = self._rootp.x_root - self.winfo_rootx()

	if p == self._curSize:
	    self._movePending = 0
	    return

	if p < self._beforeLimit:
	    p = self._beforeLimit
	
	if p >= self._afterLimit:
	    p = self._afterLimit
	
	self._calculateChange(item, p)
	self.update_idletasks()
	self._movePending = 0

    <FONT COLOR="#DD0000"># Calculate the change in response to mouse motions</FONT>
<STRONG>    def _calculateChange</STRONG>(self, item, p):

	if p < self._curSize:
	    self._moveBefore(item, p)
	elif p > self._curSize:
	    self._moveAfter(item, p)

	self._plotHandles()

<STRONG>    def _moveBefore</STRONG>(self, item, p):
	n = self._curSize - p

	<FONT COLOR="#DD0000"># Shrink the frames before</FONT>
	iterRange = list(self._item[:item])
	iterRange.reverse()
	self._iterate(iterRange, self._shrink, n)

	<FONT COLOR="#DD0000"># Adjust the frames after</FONT>
	iterRange = self._item[item:]
	self._iterate(iterRange, self._grow, n)

	self._curSize = p

<STRONG>    def _moveAfter</STRONG>(self, item, p):
	n = p - self._curSize

	<FONT COLOR="#DD0000"># Shrink the frames after</FONT>
	iterRange = self._item[item:]
	self._iterate(iterRange, self._shrink, n)

	<FONT COLOR="#DD0000"># Adjust the frames before</FONT>
	iterRange = list(self._item[:item])
	iterRange.reverse()
	self._iterate(iterRange, self._grow, n)

	self._curSize = p

</PRE>

 </BODY> </HTML>