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|
#----------------------------------------------------------------------
# Name: wxPython.lib.rcsizer
# Purpose: RowColSizer:
#
# Author: Robin Dunn, adapted from code by Niki Spahiev
#
# Created: 26-Feb-2002
# RCS-ID: $Id$
# Copyright: (c) 2002 by Total Control Software
# Licence: wxWindows license
#----------------------------------------------------------------------
# 12/10/2003 - Jeff Grimmett (grimmtooth@softhome.net)
#
# o 2.5 compatability update.
# o There appears to be a prob with the wx.PySizer.GetSize() method.
#
# 12/23/2003 - Jeff Grimmett (grimmtooth@softhome.net)
#
# o wx.PySizer.GetSize() method working right now.
#
"""
A pure-Python Sizer that lays out items in a grid similar to
wx.FlexGridSizer but item position is not implicit but explicitly
specified by row and col, and row/col spanning is supported.
Adapted from code by Niki Spahiev.
NOTE: There is now a C++ version of this class that has been wrapped
as wx.GridBagSizer. It is quicker and more capable so you are
encouraged to switch.
"""
import operator
import wx
# After the lib and demo no longer uses this sizer enable this warning...
## import warnings
## warningmsg = r"""\
## #####################################################\
## # THIS MODULE IS NOW DEPRECATED |
## # |
## # The core wx library now contains a similar class |
## # wrapped as wx.GridBagSizer. |
## #####################################################/
## """
## warnings.warn(warningmsg, DeprecationWarning, stacklevel=2)
#----------------------------------------------------------------------
class RowColSizer(wx.PySizer):
# default sizes for cells with no item
col_w = 10
row_h = 22
def __init__(self):
wx.PySizer.__init__(self)
self.growableRows = []
self.growableCols = []
def AddGrowableRow(self, idx):
self.growableRows.append(idx)
def AddGrowableCol(self, idx):
self.growableCols.append(idx)
#--------------------------------------------------
def Add(self, item, option=0, flag=0, border=0,
# row, col and spanning can be specified individually...
row=-1, col=-1,
rowspan=1, colspan=1,
# or as tuples (row,col) and (rowspan,colspan)
pos=None, size=None,
):
if pos is not None:
row, col = pos
if size is not None:
rowspan, colspan = size
assert row != -1, "Row must be specified"
assert col != -1, "Column must be specified"
# Do I really want to do this? Probably not...
#if rowspan > 1 or colspan > 1:
# flag = flag | wx.EXPAND
return wx.PySizer.Add(self, item, option, flag, border,
userData=(row, col, row+rowspan, col+colspan))
#AddWindow = Add
#AddSizer = Add
def AddSpacer(self, width, height, option=0, flag=0, border=0,
row=-1, col=-1,
rowspan=1, colspan=1,
pos=None, size=None,
):
if pos is not None:
row, col = pos
if size is not None:
rowspan, colspan = size
assert row != -1, "Row must be specified"
assert col != -1, "Column must be specified"
return wx.PySizer.Add(self, (width, height), option, flag, border,
userData=(row, col, row+rowspan, col+colspan))
#--------------------------------------------------
def _add( self, size, dim ):
r, c, r2, c2 = dim # unpack coords and spanning
# are the widths and heights lists long enough?
if r2 > len(self.rowHeights):
x = [self.row_h] * (r2-len(self.rowHeights))
self.rowHeights.extend( x )
if c2 > len(self.colWidths):
x = [self.col_w] * (c2-len(self.colWidths))
self.colWidths.extend( x )
# set the widths and heights lists for this item
scale = (r2 - r)
for i in range(r, r2):
self.rowHeights[i] = max( self.rowHeights[i], size.height / scale )
scale = (c2 - c)
for i in range(c, c2):
self.colWidths[i] = max( self.colWidths[i], size.width / scale )
#--------------------------------------------------
def CalcMin( self ):
self.rowHeights = []
self.colWidths = []
items = self.GetChildren()
if not items:
return wx.Size(10, 10)
for item in items:
self._add( item.CalcMin(), item.GetUserData() )
size = wx.Size( reduce( operator.add, self.colWidths),
reduce( operator.add, self.rowHeights) )
return size
#--------------------------------------------------
def RecalcSizes( self ):
# save current dimensions, etc.
curWidth, curHeight = self.GetSize()
px, py = self.GetPosition()
minWidth, minHeight = self.CalcMin()
# Check for growables
if self.growableRows and curHeight > minHeight:
delta = (curHeight - minHeight) / len(self.growableRows)
extra = (curHeight - minHeight) % len(self.growableRows)
for idx in self.growableRows:
self.rowHeights[idx] += delta
self.rowHeights[self.growableRows[0]] += extra
if self.growableCols and curWidth > minWidth:
delta = (curWidth - minWidth) / len(self.growableCols)
extra = (curWidth - minWidth) % len(self.growableCols)
for idx in self.growableCols:
self.colWidths[idx] += delta
self.colWidths[self.growableCols[0]] += extra
rpos = [0] * len(self.rowHeights)
cpos = [0] * len(self.colWidths)
for i in range(len(self.rowHeights)):
height = self.rowHeights[i]
rpos[i] = py
py += height
for i in range(len(self.colWidths)):
width = self.colWidths[i]
cpos[i] = px
px += width
# iterate children and set dimensions...
for item in self.GetChildren():
r, c, r2, c2 = item.GetUserData()
width = reduce( operator.add, self.colWidths[c:c2] )
height = reduce( operator.add, self.rowHeights[r:r2] )
self.SetItemBounds( item, cpos[c], rpos[r], width, height )
#--------------------------------------------------
def SetItemBounds(self, item, x, y, w, h):
# calculate the item's actual size and position within
# its grid cell
ipt = wx.Point(x, y)
isz = item.CalcMin()
flag = item.GetFlag()
if flag & wx.EXPAND or flag & wx.SHAPED:
isz = wx.Size(w, h)
else:
if flag & wx.ALIGN_CENTER_HORIZONTAL:
ipt.x = x + (w - isz.width) / 2
elif flag & wx.ALIGN_RIGHT:
ipt.x = x + (w - isz.width)
if flag & wx.ALIGN_CENTER_VERTICAL:
ipt.y = y + (h - isz.height) / 2
elif flag & wx.ALIGN_BOTTOM:
ipt.y = y + (h - isz.height)
item.SetDimension(ipt, isz)
#----------------------------------------------------------------------
#----------------------------------------------------------------------
|
