Source

wxPython / wx / lib / sized_controls.py

  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
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
#----------------------------------------------------------------------
# Name:        sized_controls.py
# Purpose:     Implements default, HIG-compliant sizers under the hood
#              and provides a simple interface for customizing those sizers.
#
# Author:      Kevin Ollivier
#
# Created:     26-May-2006
# Copyright:   (c) 2006 Kevin Ollivier
# Licence:     wxWindows license
#----------------------------------------------------------------------

import wx

# For HIG info: links to all the HIGs can be found here: 
# http://en.wikipedia.org/wiki/Human_Interface_Guidelines


# useful defines for sizer prop values

halign = {  "left": wx.ALIGN_LEFT,
            "center": wx.ALIGN_CENTER_HORIZONTAL,
            "centre": wx.ALIGN_CENTRE_HORIZONTAL,
            "right": wx.ALIGN_RIGHT,
         }
        
valign = {  "top": wx.ALIGN_TOP,
            "bottom": wx.ALIGN_BOTTOM,
            "center": wx.ALIGN_CENTER_VERTICAL,
            "centre": wx.ALIGN_CENTRE_VERTICAL,
         }
         
align = {   "center": wx.ALIGN_CENTER,
            "centre": wx.ALIGN_CENTRE, 
        }
        
border = {  "left": wx.LEFT,
            "right": wx.RIGHT,
            "top": wx.TOP,
            "bottom": wx.BOTTOM,
            "all": wx.ALL,
         }
           
minsize = {   "fixed":    wx.FIXED_MINSIZE,
          }
                
misc_flags = {   "expand": wx.EXPAND, }


# My attempt at creating a more intuitive replacement for nesting box sizers
class TableSizer(wx.PySizer):
    def __init__(self, rows=0, cols=0):
        wx.PySizer.__init__(self)
        self.rows = rows
        self.cols = cols
        self.fixed_width = 0
        self.fixed_height = 0
        self.hgrow = 0
        self.vgrow = 0
        
        self.row_widths = []
        self.col_heights = []
        
        # allow us to use 'old-style' proportions when emulating box sizers
        self.isHorizontal = (self.rows == 1 and self.cols == 0)
        self.isVertical = (self.cols == 1 and self.rows == 0)
        
    def CalcNumRowsCols(self):
        numrows = self.rows
        numcols = self.cols
        numchild = len(self.GetChildren())
        
        if numrows == 0 and numcols == 0:
            return 0, 0
        
        if numrows == 0:
            rows, mod = divmod(numchild, self.cols)
            if mod > 0:
                rows += 1
            numrows = rows
            
        if numcols == 0:
            cols, mod = divmod(numchild, self.rows)
            if mod > 0:
                cols += 1
            numcols = cols
            
        return numrows, numcols
        
    def CalcMin(self):
        numrows, numcols = self.CalcNumRowsCols() 
        numchild = len(self.GetChildren())
        
        if numchild == 0:
            return wx.Size(10, 10)
            
        if numrows == 0 and numcols == 0:
            print "TableSizer must have the number of rows or columns set. Cannot continue."
            return wx.Size(10, 10)
       
        self.row_widths = [0 for x in range(0, numrows)]
        self.col_heights = [0 for x in range(0, numcols)]
        currentRow = 0
        currentCol = 0
        counter = 0
        self.hgrow = 0
        self.vgrow = 0

        # get the max row width and max column height
        for item in self.GetChildren():            
            if self.cols != 0:
                currentRow, currentCol = divmod(counter, numcols)
            else:
                currentCol, currentRow = divmod(counter, numrows)
            
            if item.IsShown():
                width, height = item.CalcMin()
                
                if self.isVertical and item.GetProportion() > 0:
                    self.hgrow += item.GetProportion()
                elif self.isHorizontal and item.GetProportion() > 0:
                    self.vgrow += item.GetProportion()
                
                if width > self.row_widths[currentRow]:
                    self.row_widths[currentRow] = width
                
                if height > self.col_heights[currentCol]:
                    self.col_heights[currentCol] = height
            
            counter += 1
                
        minwidth = 0
        for row_width in self.row_widths:
            minwidth += row_width
            
        minheight = 0
        for col_height in self.col_heights:
            minheight += col_height
                
        self.fixed_width = minwidth
        self.fixed_height = minheight
        
        return wx.Size(minwidth, minheight)
        
    def RecalcSizes(self):
        numrows, numcols = self.CalcNumRowsCols()
        numchild = len(self.GetChildren())
        
        if numchild == 0:
            return
        currentRow = 0
        currentCol = 0
        counter = 0
        
        print "cols %d, rows %d" % (self.cols, self.rows)
        print "fixed_height %d, fixed_width %d" % (self.fixed_height, self.fixed_width)
        #print "self.GetSize() = " + `self.GetSize()`
        
        row_widths = [0 for x in range(0, numrows)]
        col_heights = [0 for x in range(0, numcols)]
        item_sizes = [0 for x in range(0, len(self.GetChildren()))]
        grow_sizes = [0 for x in range(0, len(self.GetChildren()))]
        
        curHPos = 0
        curVPos = 0
        curCol = 0
        curRow = 0
        # first, we set sizes for all children, and while doing so, calc
        # the maximum row heights and col widths. Then, afterwards we handle
        # the positioning of the controls                
        
        for item in self.GetChildren():
            if self.cols != 0:
                currentRow, currentCol = divmod(counter, numcols)
            else:
                currentCol, currentRow = divmod(counter, numrows)
            if item.IsShown():
                item_minsize = item.GetMinSizeWithBorder()
                width = item_minsize[0]
                height = item_minsize[1]
                
                print "row_height %d, row_width %d" % (self.col_heights[currentCol], self.row_widths[currentRow])
                growable_width = (self.GetSize()[0]) - width
                growable_height = (self.GetSize()[1]) - height
                
                #if not self.isVertical and not self.isHorizontal:
                #    growable_width = self.GetSize()[0] - self.row_widths[currentRow]
                #    growable_height = self.GetSize()[1] - self.col_heights[currentCol]
                
                #print "grow_height %d, grow_width %d" % (growable_height, growable_width)
                
                item_vgrow = 0
                item_hgrow = 0
                # support wx.EXPAND for box sizers to be compatible
                if item.GetFlag() & wx.EXPAND:
                    if self.isVertical:
                        if self.hgrow > 0 and item.GetProportion() > 0:
                            item_hgrow = (growable_width * item.GetProportion()) / self.hgrow
                        item_vgrow = growable_height 

                    elif self.isHorizontal: 
                        if self.vgrow > 0 and item.GetProportion() > 0:
                            item_vgrow = (growable_height * item.GetProportion()) / self.vgrow
                        item_hgrow = growable_width
                        
                if growable_width > 0 and item.GetHGrow() > 0:
                    item_hgrow = (growable_width * item.GetHGrow()) / 100
                    print "hgrow = %d" % (item_hgrow)

                if growable_height > 0 and item.GetVGrow() > 0:
                    item_vgrow = (growable_height * item.GetVGrow()) / 100
                    print "vgrow = %d" % (item_vgrow)
                
                grow_size = wx.Size(item_hgrow, item_vgrow)
                size = item_minsize #wx.Size(item_minsize[0] + item_hgrow, item_minsize[1] + item_vgrow) 
                if size[0] + grow_size[0] > row_widths[currentRow]:
                    row_widths[currentRow] = size[0] + grow_size[0]
                if size[1] + grow_size[1] > col_heights[currentCol]:
                    col_heights[currentCol] = size[1] + grow_size[1] 
                
                grow_sizes[counter] = grow_size
                item_sizes[counter] = size
            
            counter += 1
        
        counter = 0
        for item in self.GetChildren():
            if self.cols != 0:
                currentRow, currentCol = divmod(counter, numcols)
            else:
                currentCol, currentRow = divmod(counter, numrows)
            
            itempos = self.GetPosition()
            if item.IsShown():
                rowstart = itempos[0] 
                for row in range(0, currentRow):
                    rowstart += row_widths[row]
                    
                colstart = itempos[1]
                for col in range(0, currentCol):
                    #print "numcols = %d, currentCol = %d, col = %d" % (numcols, currentCol, col)
                    colstart += col_heights[col]
                    
                itempos[0] += rowstart
                itempos[1] += colstart
                
                if item.GetFlag() & wx.ALIGN_RIGHT:
                    itempos[0] += (row_widths[currentRow] - item_sizes[counter][0])
                elif item.GetFlag() & (wx.ALIGN_CENTER | wx.ALIGN_CENTER_HORIZONTAL):
                    itempos[0] += (row_widths[currentRow] - item_sizes[counter][0]) / 2
                
                if item.GetFlag() & wx.ALIGN_BOTTOM:
                    itempos[1] += (col_heights[currentCol] - item_sizes[counter][1])
                elif item.GetFlag() & (wx.ALIGN_CENTER | wx.ALIGN_CENTER_VERTICAL):
                    itempos[1] += (col_heights[currentCol] - item_sizes[counter][1]) / 2
                
                hgrowth =  (grow_sizes[counter][0] - itempos[0])
                if hgrowth > 0:
                    item_sizes[counter][0] += hgrowth
                
                vgrowth =  (grow_sizes[counter][1] - itempos[1])
                if vgrowth > 0:
                    item_sizes[counter][1] += vgrowth
                #item_sizes[counter][1] -= itempos[1]
                item.SetDimension(itempos, item_sizes[counter])
                    
            counter += 1

def GetDefaultBorder(self):
    border = 4
    if wx.Platform == "__WXMAC__":
        border = 6 
    elif wx.Platform == "__WXMSW__":
        # MSW HIGs use dialog units, not pixels
        pnt = self.ConvertDialogPointToPixels(wx.Point(4, 4))
        border = pnt[0] // 2
    elif wx.Platform == "__WXGTK__":
        border = 3 

    return border

def SetDefaultSizerProps(self):
    item = self.GetParent().GetSizer().GetItem(self)    
    item.SetProportion(0)
    item.SetFlag(wx.ALL)
    item.SetBorder(self.GetDefaultHIGBorder())
        
def GetSizerProps(self):
    """
    Returns a dictionary of prop name + value
    """
    props = {}
    item = self.GetParent().GetSizer().GetItem(self)
    
    props['proportion'] = item.GetProportion()
    flags = item.GetFlag()

    if flags & border['all'] == border['all']:
        props['border'] = (['all'], item.GetBorder())
    else:
        borders = []
        for key in border:
            if flags & border[key]:
                borders.append(key)      
            
        props['border'] = (borders, item.GetBorder())
    
    if flags & align['center'] == align['center']:
        props['align'] = 'center'
    else:
        for key in halign:
            if flags & halign[key]:
                props['halign'] = key

        for key in valign:
            if flags & valign[key]:
                props['valign'] = key
    
    for key in minsize:
        if flags & minsize[key]:
            props['minsize'] = key 
    
    for key in misc_flags:
        if flags & misc_flags[key]:
            props[key] = "true"
            
    return props

def SetSizerProp(self, prop, value):
    
    lprop = prop.lower()
    sizer = self.GetParent().GetSizer()
    item = sizer.GetItem(self) 
    flag = item.GetFlag()
    if lprop == "proportion":
        item.SetProportion(int(value))
    elif lprop == "hgrow":
        item.SetHGrow(int(value))
    elif lprop == "vgrow":
        item.SetVGrow(int(value))
    elif lprop == "align":
        flag = flag | align[value]
    elif lprop == "halign":
        flag = flag | halign[value]
    elif lprop == "valign":
        flag = flag | valign[value]
    elif lprop == "border":
        # this arg takes a tuple (dir, pixels)
        dirs, amount = value
        if dirs == "all":
            dirs = ["all"]
        for dir in dirs:
            flag = flag | border[dir]
        item.SetBorder(amount)
    elif lprop == "minsize":
        flag = flag | minsize[value]
    elif lprop in misc_flags:
        if not value or str(value) == "" or str(value).lower() == "false":
            flag = flag &~ misc_flags[lprop]
        else:
            flag = flag | misc_flags[lprop]
    
    # auto-adjust growable rows/columns if expand or proportion is set
    # on a sizer item in a FlexGridSizer
    if lprop in ["expand", "proportion"] and isinstance(sizer, wx.FlexGridSizer):
        cols = sizer.GetCols()
        rows = sizer.GetRows()
        # FIXME: I'd like to get the item index in the sizer instead, but
        # doing sizer.GetChildren.index(item) always gives an error
        itemnum = self.GetParent().GetChildren().index(self)
                
        col = 0
        row = 0
        if cols == 0:
            col, row = divmod( itemnum, rows )
        else:
            row, col = divmod( itemnum, cols )
        
        if lprop == "expand" and not sizer.IsColGrowable(col):
            sizer.AddGrowableCol(col)
        elif lprop == "proportion" and int(value) != 0 and not sizer.IsRowGrowable(row):
            sizer.AddGrowableRow(row)

    item.SetFlag(flag)

def SetSizerProps(self, props={}, **kwargs):
    allprops = {}
    allprops.update(props)
    allprops.update(kwargs)
    
    for prop in allprops:
        self.SetSizerProp(prop, allprops[prop])
        
def GetDialogBorder(self):
    border = 6
    if wx.Platform == "__WXMAC__" or wx.Platform == "__WXGTK__":
        border = 12
    elif wx.Platform == "__WXMSW__":
        pnt = self.ConvertDialogPointToPixels(wx.Point(7, 7))
        border = pnt[0]
    
    return border

def SetHGrow(self, proportion):
    data = self.GetUserData()
    if "HGrow" in data:
        data["HGrow"] = proportion
        self.SetUserData(data) 
    
def GetHGrow(self):
    if self.GetUserData() and "HGrow" in self.GetUserData():
        return self.GetUserData()["HGrow"]
    else:
        return 0
        
def SetVGrow(self, proportion):
    data = self.GetUserData()
    if "VGrow" in data:
        data["VGrow"] = proportion
        self.SetUserData(data) 
    
    
def GetVGrow(self):
    if self.GetUserData() and "VGrow" in self.GetUserData():
        return self.GetUserData()["VGrow"]
    else:
        return 0

def GetDefaultPanelBorder(self):
    # child controls will handle their borders, so don't pad the panel.
    return 0

# Why, Python?! Why do you make it so easy?! ;-)    
wx.Dialog.GetDialogBorder = GetDialogBorder
wx.Panel.GetDefaultHIGBorder = GetDefaultPanelBorder
wx.Notebook.GetDefaultHIGBorder = GetDefaultPanelBorder
wx.SplitterWindow.GetDefaultHIGBorder = GetDefaultPanelBorder

wx.Window.GetDefaultHIGBorder = GetDefaultBorder
wx.Window.SetDefaultSizerProps = SetDefaultSizerProps
wx.Window.SetSizerProp = SetSizerProp
wx.Window.SetSizerProps = SetSizerProps
wx.Window.GetSizerProps = GetSizerProps

wx.SizerItem.SetHGrow = SetHGrow
wx.SizerItem.GetHGrow = GetHGrow
wx.SizerItem.SetVGrow = SetVGrow
wx.SizerItem.GetVGrow = GetVGrow


class SizedPanel(wx.PyPanel):
    def __init__(self, *args, **kwargs):
        wx.PyPanel.__init__(self, *args, **kwargs)
        sizer = wx.BoxSizer(wx.VERTICAL) #TableSizer(1, 0)
        self.SetSizer(sizer)
        self.sizerType = "vertical"
        
    def AddChild(self, child):
        if wx.VERSION < (2,8):
            wx.PyPanel.base_AddChild(self, child)
        else:
            wx.PyPanel.AddChild(self, child)

        # Note: The wx.LogNull is used here to suppress a log message
        # on wxMSW that happens because when AddChild is called the
        # widget's hwnd hasn't been set yet, so the GetWindowRect that
        # happens as a result of sizer.Add (in wxSizerItem::SetWindow)
        # fails.  A better fix would be to defer this code somehow
        # until after the child widget is fully constructed.
        sizer = self.GetSizer()
        nolog = wx.LogNull()
        item = sizer.Add(child)
        del nolog
        item.SetUserData({"HGrow":0, "VGrow":0})
        
        # Note: One problem is that the child class given to AddChild
        # is the underlying wxWidgets control, not its Python subclass. So if 
        # you derive your own class, and override that class' GetDefaultBorder(), 
        # etc. methods, it will have no effect.  
        child.SetDefaultSizerProps()
        
    def GetSizerType(self):
        return self.sizerType
    
    def SetSizerType(self, type, options={}):
        sizer = None
        self.sizerType = type
        if type == "horizontal":
            sizer = wx.BoxSizer(wx.HORIZONTAL) # TableSizer(0, 1) 
        
        elif type == "vertical":
            sizer = wx.BoxSizer(wx.VERTICAL) # TableSizer(1, 0)
        
        elif type == "form":
            #sizer = TableSizer(2, 0)
            sizer = wx.FlexGridSizer(0, 2, 0, 0)
            #sizer.AddGrowableCol(1)
            
        elif type == "table":
            rows = cols = 0
            if options.has_key('rows'):
                rows = int(options['rows'])

            if options.has_key('cols'):
                cols = int(options['cols'])
        
            sizer = TableSizer(rows, cols)
        
        elif type == "grid":
            sizer = wx.FlexGridSizer(0, 0, 0, 0)
            if options.has_key('rows'):
                sizer.SetRows(int(options['rows']))
            else:
                sizer.SetRows(0)
            if options.has_key('cols'):
                sizer.SetCols(int(options['cols']))
            else:
                sizer.SetCols(0)
    
            if options.has_key('growable_row'):
                row, proportion = options['growable_row']
                sizer.SetGrowableRow(row, proportion)
            
            if options.has_key('growable_col'):
                col, proportion = options['growable_col']
                sizer.SetGrowableCol(col, proportion)
            
            if options.has_key('hgap'):
                sizer.SetHGap(options['hgap'])
                
            if options.has_key('vgap'):
                sizer.SetVGap(options['vgap'])
        if sizer:
            self._SetNewSizer(sizer)
                
    def _SetNewSizer(self, sizer):
        props = {}
        for child in self.GetChildren():
            props[child.GetId()] = child.GetSizerProps()
            self.GetSizer().Detach(child)
            
        wx.PyPanel.SetSizer(self, sizer)
        
        for child in self.GetChildren():
            self.GetSizer().Add(child)
            child.SetSizerProps(props[child.GetId()])
        
class SizedDialog(wx.Dialog):
    def __init__(self, *args, **kwargs):    
        wx.Dialog.__init__(self, *args, **kwargs)
        
        self.SetExtraStyle(wx.WS_EX_VALIDATE_RECURSIVELY)
        
        self.borderLen = 12
        self.mainPanel = SizedPanel(self, -1)
        
        mysizer = wx.BoxSizer(wx.VERTICAL)
        mysizer.Add(self.mainPanel, 1, wx.EXPAND | wx.ALL, self.GetDialogBorder())
        self.SetSizer(mysizer)
        
        self.SetAutoLayout(True)
        
    def GetContentsPane(self):
        return self.mainPanel
        
    def SetButtonSizer(self, sizer):
        self.GetSizer().Add(sizer, 0, wx.EXPAND | wx.BOTTOM | wx.RIGHT, self.GetDialogBorder())
        
        # Temporary hack to fix button ordering problems.
        cancel = self.FindWindowById(wx.ID_CANCEL)
        no = self.FindWindowById(wx.ID_NO)
        if no and cancel:
            cancel.MoveAfterInTabOrder(no)
            
class SizedFrame(wx.Frame):
    def __init__(self, *args, **kwargs):    
        wx.Frame.__init__(self, *args, **kwargs)
        
        self.borderLen = 12
        # this probably isn't needed, but I thought it would help to make it consistent
        # with SizedDialog, and creating a panel to hold things is often good practice.
        self.mainPanel = SizedPanel(self, -1)
        
        mysizer = wx.BoxSizer(wx.VERTICAL)
        mysizer.Add(self.mainPanel, 1, wx.EXPAND)
        self.SetSizer(mysizer)
        
        self.SetAutoLayout(True)
        
    def GetContentsPane(self):
        return self.mainPanel