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#----------------------------------------------------------------------
# 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
import wx.lib.scrolledpanel as sp
# 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)
if item is None:
return None
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):
"""
Sets a sizer property
:param prop: valid strings are "proportion", "hgrow", "vgrow",
"align", "halign", "valign", "border", "minsize" and "expand"
:param value: corresponding value for the prop
"""
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 == "border":
# this arg takes a tuple (dir, pixels)
dirs, amount = value
if dirs == "all":
dirs = ["all"]
else:
flag &= ~(wx.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):
"""
Allows to set multiple sizer properties
:param props: a dictionary of prop name + value
:param kwargs: key words can be used for properties, e.g. expand=True
"""
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 SizedParent:
def 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={}):
"""
Sets the sizer type and automatically re-assign any children
to it.
:param type: sizer type, valid values are "horizontal", "vertical",
"form", "table" and "grid"
:param options: dictionary of options depending on type
"""
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 _DetachFromSizer(self, sizer):
props = {}
for child in self.GetChildren():
# On the Mac the scrollbars and corner gripper of a
# ScrolledWindow will be in the list of children, but
# should not be managed by a sizer. So if there is a
# child that is not in a sizer make sure we don't track
# info for it nor add it to the next sizer.
csp = child.GetSizerProps()
if csp is not None:
props[child.GetId()] = csp
self.GetSizer().Detach(child)
return props
def _AddToNewSizer(self, sizer, props):
for child in self.GetChildren():
csp = props.get(child.GetId(), None)
# See Mac comment above.
if csp is not None:
self.GetSizer().Add(child)
child.SetSizerProps(csp)
class SizedPanel(wx.PyPanel, SizedParent):
def __init__(self, *args, **kwargs):
"""
A sized panel
Controls added to it will automatically be added to its sizer.
Usage:
'self' is a SizedPanel instance
self.SetSizerType("horizontal")
b1 = wx.Button(self, wx.ID_ANY)
t1 = wx.TextCtrl(self, -1)
t1.SetSizerProps(expand=True)
"""
wx.PyPanel.__init__(self, *args, **kwargs)
sizer = wx.BoxSizer(wx.VERTICAL) #TableSizer(1, 0)
self.SetSizer(sizer)
self.sizerType = "vertical"
def AddChild(self, child):
"""
Called automatically by wx, do not call it from user code
"""
if wx.VERSION < (2,8):
wx.PyPanel.base_AddChild(self, child)
else:
wx.PyPanel.AddChild(self, child)
SizedParent.AddChild(self, child)
def _SetNewSizer(self, sizer):
props = self._DetachFromSizer(sizer)
wx.PyPanel.SetSizer(self, sizer)
self._AddToNewSizer(sizer, props)
class SizedScrolledPanel(sp.ScrolledPanel, SizedParent):
def __init__(self, *args, **kwargs):
"""A sized scrolled panel
Controls added to it will automatically be added to its sizer.
Usage:
'self' is a SizedScrolledPanel instance
self.SetSizerType("horizontal")
b1 = wx.Button(self, wx.ID_ANY)
t1 = wx.TextCtrl(self, -1)
t1.SetSizerProps(expand=True)
"""
sp.ScrolledPanel.__init__(self, *args, **kwargs)
sizer = wx.BoxSizer(wx.VERTICAL) #TableSizer(1, 0)
self.SetSizer(sizer)
self.sizerType = "vertical"
self.SetupScrolling()
def AddChild(self, child):
"""
Called automatically by wx, should not be called from user code
"""
if wx.VERSION < (2,8):
sp.ScrolledPanel.base_AddChild(self, child)
else:
sp.ScrolledPanel.AddChild(self, child)
SizedParent.AddChild(self, child)
def _SetNewSizer(self, sizer):
props = self._DetachFromSizer(sizer)
sp.ScrolledPanel.SetSizer(self, sizer)
self._AddToNewSizer(sizer, props)
class SizedDialog(wx.Dialog):
def __init__(self, *args, **kwargs):
"""A sized dialog
Controls added to its content pane will automatically be added to
the panes sizer.
Usage:
'self' is a SizedDialog instance
pane = self.GetContentsPane()
pane.SetSizerType("horizontal")
b1 = wx.Button(pane, wx.ID_ANY)
t1 = wx.TextCtrl(pane, wx.ID_ANY)
t1.SetSizerProps(expand=True)
"""
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 the pane to add controls too
"""
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 = wx.FindWindowById(wx.ID_CANCEL, parent=self)
no = wx.FindWindowById(wx.ID_NO, parent=self)
if no and cancel:
cancel.MoveAfterInTabOrder(no)
class SizedFrame(wx.Frame):
def __init__(self, *args, **kwargs):
"""
A sized frame
Controls added to its content pane will automatically be added to
the panes sizer.
Usage:
'self' is a SizedFrame instance
pane = self.GetContentsPane()
pane.SetSizerType("horizontal")
b1 = wx.Button(pane, wx.ID_ANY)
t1 = wx.TextCtrl(pane, -1)
t1.SetSizerProps(expand=True)
"""
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 the pane to add controls too
"""
return self.mainPanel
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