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	 065627e15c
			
		
	
	
		065627e15c
		
	
	
	
	
		
			
			Redo setting the selection and setting the beacon to deal better with rows or columns -- these are now expressed by range (1, sys.maxint).
		
			
				
	
	
		
			845 lines
		
	
	
	
		
			26 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			845 lines
		
	
	
	
		
			26 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
| """SS1 -- a spreadsheet."""
 | |
| 
 | |
| import os
 | |
| import re
 | |
| import sys
 | |
| import cgi
 | |
| import rexec
 | |
| from xml.parsers import expat
 | |
| 
 | |
| LEFT, CENTER, RIGHT = "LEFT", "CENTER", "RIGHT"
 | |
| 
 | |
| def ljust(x, n):
 | |
|     return x.ljust(n)
 | |
| def center(x, n):
 | |
|     return x.center(n)
 | |
| def rjust(x, n):
 | |
|     return x.rjust(n)
 | |
| align2action = {LEFT: ljust, CENTER: center, RIGHT: rjust}
 | |
| 
 | |
| align2xml = {LEFT: "left", CENTER: "center", RIGHT: "right"}
 | |
| xml2align = {"left": LEFT, "center": CENTER, "right": RIGHT}
 | |
| 
 | |
| align2anchor = {LEFT: "w", CENTER: "center", RIGHT: "e"}
 | |
| 
 | |
| def sum(seq):
 | |
|     total = 0
 | |
|     for x in seq:
 | |
|         if x is not None:
 | |
|             total += x
 | |
|     return total
 | |
| 
 | |
| class Sheet:
 | |
| 
 | |
|     def __init__(self):
 | |
|         self.cells = {} # {(x, y): cell, ...}
 | |
|         self.rexec = rexec.RExec()
 | |
|         m = self.rexec.add_module('__main__')
 | |
|         m.cell = self.cellvalue
 | |
|         m.cells = self.multicellvalue
 | |
|         m.sum = sum
 | |
| 
 | |
|     def cellvalue(self, x, y):
 | |
|         cell = self.getcell(x, y)
 | |
|         if hasattr(cell, 'recalc'):
 | |
|             return cell.recalc(self.rexec)
 | |
|         else:
 | |
|             return cell
 | |
| 
 | |
|     def multicellvalue(self, x1, y1, x2, y2):
 | |
|         if x1 > x2:
 | |
|             x1, x2 = x2, x1
 | |
|         if y1 > y2:
 | |
|             y1, y2 = y2, y1
 | |
|         seq = []
 | |
|         for y in range(y1, y2+1):
 | |
|             for x in range(x1, x2+1):
 | |
|                 seq.append(self.cellvalue(x, y))
 | |
|         return seq
 | |
| 
 | |
|     def getcell(self, x, y):
 | |
|         return self.cells.get((x, y))
 | |
| 
 | |
|     def setcell(self, x, y, cell):
 | |
|         assert x > 0 and y > 0
 | |
|         assert isinstance(cell, BaseCell)
 | |
|         self.cells[x, y] = cell
 | |
| 
 | |
|     def clearcell(self, x, y):
 | |
|         try:
 | |
|             del self.cells[x, y]
 | |
|         except KeyError:
 | |
|             pass
 | |
| 
 | |
|     def clearcells(self, x1, y1, x2, y2):
 | |
|         for xy in self.selectcells(x1, y1, x2, y2):
 | |
|             del self.cells[xy]
 | |
| 
 | |
|     def clearrows(self, y1, y2):
 | |
|         self.clearcells(0, y1, sys.maxint, y2)
 | |
| 
 | |
|     def clearcolumns(self, x1, x2):
 | |
|         self.clearcells(x1, 0, x2, sys.maxint)
 | |
| 
 | |
|     def selectcells(self, x1, y1, x2, y2):
 | |
|         if x1 > x2:
 | |
|             x1, x2 = x2, x1
 | |
|         if y1 > y2:
 | |
|             y1, y2 = y2, y1
 | |
|         return [(x, y) for x, y in self.cells
 | |
|                 if x1 <= x <= x2 and y1 <= y <= y2]
 | |
| 
 | |
|     def movecells(self, x1, y1, x2, y2, dx, dy):
 | |
|         if dx == 0 and dy == 0:
 | |
|             return
 | |
|         if x1 > x2:
 | |
|             x1, x2 = x2, x1
 | |
|         if y1 > y2:
 | |
|             y1, y2 = y2, y1
 | |
|         assert x1+dx > 0 and y1+dy > 0
 | |
|         new = {}
 | |
|         for x, y in self.cells:
 | |
|             cell = self.cells[x, y]
 | |
|             if hasattr(cell, 'renumber'):
 | |
|                 cell = cell.renumber(x1, y1, x2, y2, dx, dy)
 | |
|             if x1 <= x <= x2 and y1 <= y <= y2:
 | |
|                 x += dx
 | |
|                 y += dy
 | |
|             new[x, y] = cell
 | |
|         self.cells = new
 | |
| 
 | |
|     def insertrows(self, y, n):
 | |
|         assert n > 0
 | |
|         self.movecells(0, y, sys.maxint, sys.maxint, 0, n)
 | |
| 
 | |
|     def deleterows(self, y1, y2):
 | |
|         if y1 > y2:
 | |
|             y1, y2 = y2, y1
 | |
|         self.clearrows(y1, y2)
 | |
|         self.movecells(0, y2+1, sys.maxint, sys.maxint, 0, y1-y2-1)
 | |
| 
 | |
|     def insertcolumns(self, x, n):
 | |
|         assert n > 0
 | |
|         self.movecells(x, 0, sys.maxint, sys.maxint, n, 0)
 | |
| 
 | |
|     def deletecolumns(self, x1, x2):
 | |
|         if x1 > x2:
 | |
|             x1, x2 = x2, x1
 | |
|         self.clearcells(x1, x2)
 | |
|         self.movecells(x2+1, 0, sys.maxint, sys.maxint, x1-x2-1, 0)
 | |
| 
 | |
|     def getsize(self):
 | |
|         maxx = maxy = 0
 | |
|         for x, y in self.cells:
 | |
|             maxx = max(maxx, x)
 | |
|             maxy = max(maxy, y)
 | |
|         return maxx, maxy
 | |
| 
 | |
|     def reset(self):
 | |
|         for cell in self.cells.itervalues():
 | |
|             if hasattr(cell, 'reset'):
 | |
|                 cell.reset()
 | |
| 
 | |
|     def recalc(self):
 | |
|         self.reset()
 | |
|         for cell in self.cells.itervalues():
 | |
|             if hasattr(cell, 'recalc'):
 | |
|                 cell.recalc(self.rexec)
 | |
| 
 | |
|     def display(self):
 | |
|         maxx, maxy = self.getsize()
 | |
|         width, height = maxx+1, maxy+1
 | |
|         colwidth = [1] * width
 | |
|         full = {}
 | |
|         # Add column heading labels in row 0
 | |
|         for x in range(1, width):
 | |
|             full[x, 0] = text, alignment = colnum2name(x), RIGHT
 | |
|             colwidth[x] = max(colwidth[x], len(text))
 | |
|         # Add row labels in column 0
 | |
|         for y in range(1, height):
 | |
|             full[0, y] = text, alignment = str(y), RIGHT
 | |
|             colwidth[0] = max(colwidth[0], len(text))
 | |
|         # Add sheet cells in columns with x>0 and y>0
 | |
|         for (x, y), cell in self.cells.iteritems():
 | |
|             if x <= 0 or y <= 0:
 | |
|                 continue
 | |
|             if hasattr(cell, 'recalc'):
 | |
|                 cell.recalc(self.rexec)
 | |
|             if hasattr(cell, 'format'):
 | |
|                 text, alignment = cell.format()
 | |
|                 assert isinstance(text, str)
 | |
|                 assert alignment in (LEFT, CENTER, RIGHT)
 | |
|             else:
 | |
|                 text = str(cell)
 | |
|                 if isinstance(cell, str):
 | |
|                     alignment = LEFT
 | |
|                 else:
 | |
|                     alignment = RIGHT
 | |
|             full[x, y] = (text, alignment)
 | |
|             colwidth[x] = max(colwidth[x], len(text))
 | |
|         # Calculate the horizontal separator line (dashes and dots)
 | |
|         sep = ""
 | |
|         for x in range(width):
 | |
|             if sep:
 | |
|                 sep += "+"
 | |
|             sep += "-"*colwidth[x]
 | |
|         # Now print The full grid
 | |
|         for y in range(height):
 | |
|             line = ""
 | |
|             for x in range(width):
 | |
|                 text, alignment = full.get((x, y)) or ("", LEFT)
 | |
|                 text = align2action[alignment](text, colwidth[x])
 | |
|                 if line:
 | |
|                     line += '|'
 | |
|                 line += text
 | |
|             print line
 | |
|             if y == 0:
 | |
|                 print sep
 | |
| 
 | |
|     def xml(self):
 | |
|         out = ['<spreadsheet>']
 | |
|         for (x, y), cell in self.cells.iteritems():
 | |
|             if hasattr(cell, 'xml'):
 | |
|                 cellxml = cell.xml()
 | |
|             else:
 | |
|                 cellxml = '<value>%s</value>' % cgi.escape(cell)
 | |
|             out.append('<cell row="%s" col="%s">\n  %s\n</cell>' %
 | |
|                        (y, x, cellxml))
 | |
|         out.append('</spreadsheet>')
 | |
|         return '\n'.join(out)
 | |
| 
 | |
|     def save(self, filename):
 | |
|         text = self.xml()
 | |
|         f = open(filename, "w")
 | |
|         f.write(text)
 | |
|         if text and not text.endswith('\n'):
 | |
|             f.write('\n')
 | |
|         f.close()
 | |
| 
 | |
|     def load(self, filename):
 | |
|         f = open(filename, 'r')
 | |
|         SheetParser(self).parsefile(f)
 | |
|         f.close()
 | |
| 
 | |
| class SheetParser:
 | |
| 
 | |
|     def __init__(self, sheet):
 | |
|         self.sheet = sheet
 | |
| 
 | |
|     def parsefile(self, f):
 | |
|         parser = expat.ParserCreate()
 | |
|         parser.StartElementHandler = self.startelement
 | |
|         parser.EndElementHandler = self.endelement
 | |
|         parser.CharacterDataHandler = self.data
 | |
|         parser.ParseFile(f)
 | |
| 
 | |
|     def startelement(self, tag, attrs):
 | |
|         method = getattr(self, 'start_'+tag, None)
 | |
|         if method:
 | |
|             for key, value in attrs.iteritems():
 | |
|                 attrs[key] = str(value) # XXX Convert Unicode to 8-bit
 | |
|             method(attrs)
 | |
|         self.texts = []
 | |
| 
 | |
|     def data(self, text):
 | |
|         text = str(text) # XXX Convert Unicode to 8-bit
 | |
|         self.texts.append(text)
 | |
| 
 | |
|     def endelement(self, tag):
 | |
|         method = getattr(self, 'end_'+tag, None)
 | |
|         if method:
 | |
|             method("".join(self.texts))
 | |
| 
 | |
|     def start_cell(self, attrs):
 | |
|         self.y = int(attrs.get("row"))
 | |
|         self.x = int(attrs.get("col"))
 | |
| 
 | |
|     def start_value(self, attrs):
 | |
|         self.fmt = attrs.get('format')
 | |
|         self.alignment = xml2align.get(attrs.get('align'))
 | |
| 
 | |
|     start_formula = start_value
 | |
| 
 | |
|     def end_int(self, text):
 | |
|         try:
 | |
|             self.value = int(text)
 | |
|         except:
 | |
|             self.value = None
 | |
| 
 | |
|     def end_long(self, text):
 | |
|         try:
 | |
|             self.value = long(text)
 | |
|         except:
 | |
|             self.value = None
 | |
| 
 | |
|     def end_double(self, text):
 | |
|         try:
 | |
|             self.value = float(text)
 | |
|         except:
 | |
|             self.value = None
 | |
| 
 | |
|     def end_complex(self, text):
 | |
|         try:
 | |
|             self.value = complex(text)
 | |
|         except:
 | |
|             self.value = None
 | |
| 
 | |
|     def end_string(self, text):
 | |
|         try:
 | |
|             self.value = text
 | |
|         except:
 | |
|             self.value = None
 | |
| 
 | |
|     def end_value(self, text):
 | |
|         if isinstance(self.value, BaseCell):
 | |
|             self.cell = self.value
 | |
|         elif isinstance(self.value, str):
 | |
|             self.cell = StringCell(self.value,
 | |
|                                    self.fmt or "%s",
 | |
|                                    self.alignment or LEFT)
 | |
|         else:
 | |
|             self.cell = NumericCell(self.value,
 | |
|                                     self.fmt or "%s",
 | |
|                                     self.alignment or RIGHT)
 | |
| 
 | |
|     def end_formula(self, text):
 | |
|         self.cell = FormulaCell(text,
 | |
|                                 self.fmt or "%s",
 | |
|                                 self.alignment or RIGHT)
 | |
| 
 | |
|     def end_cell(self, text):
 | |
|         self.sheet.setcell(self.x, self.y, self.cell)
 | |
| 
 | |
| class BaseCell:
 | |
|     __init__ = None # Must provide
 | |
|     """Abstract base class for sheet cells.
 | |
| 
 | |
|     Subclasses may but needn't provide the following APIs:
 | |
|     
 | |
|     cell.reset() -- prepare for recalculation
 | |
|     cell.recalc(rexec) -> value -- recalculate formula
 | |
|     cell.format() -> (value, alignment) -- return formatted value
 | |
|     cell.xml() -> string -- return XML
 | |
|     """
 | |
| 
 | |
| class NumericCell(BaseCell):
 | |
| 
 | |
|     def __init__(self, value, fmt="%s", alignment=RIGHT):
 | |
|         assert isinstance(value, (int, long, float, complex))
 | |
|         assert alignment in (LEFT, CENTER, RIGHT)
 | |
|         self.value = value
 | |
|         self.fmt = fmt
 | |
|         self.alignment = alignment
 | |
| 
 | |
|     def recalc(self, rexec):
 | |
|         return self.value
 | |
| 
 | |
|     def format(self):
 | |
|         try:
 | |
|             text = self.fmt % self.value
 | |
|         except:
 | |
|             text = str(self.value)
 | |
|         return text, self.alignment
 | |
| 
 | |
|     def xml(self):
 | |
|         method = getattr(self, '_xml_' + type(self.value).__name__)
 | |
|         return '<value align="%s" format="%s">%s</value>' % (
 | |
|                 align2xml[self.alignment],
 | |
|                 self.fmt,
 | |
|                 method())
 | |
| 
 | |
|     def _xml_int(self):
 | |
|         if -2**31 <= self.value < 2**31:
 | |
|             return '<int>%s</int>' % self.value
 | |
|         else:
 | |
|             return self._xml_long()
 | |
| 
 | |
|     def _xml_long(self):
 | |
|         return '<long>%s</long>' % self.value
 | |
| 
 | |
|     def _xml_float(self):
 | |
|         return '<double>%s</double>' % repr(self.value)
 | |
| 
 | |
|     def _xml_complex(self):
 | |
|         return '<complex>%s</double>' % repr(self.value)
 | |
| 
 | |
| class StringCell(BaseCell):
 | |
| 
 | |
|     def __init__(self, text, fmt="%s", alignment=LEFT):
 | |
|         assert isinstance(text, (str, unicode))
 | |
|         assert alignment in (LEFT, CENTER, RIGHT)
 | |
|         self.text = text
 | |
|         self.fmt = fmt
 | |
|         self.alignment = alignment
 | |
| 
 | |
|     def recalc(self, rexec):
 | |
|         return self.text
 | |
| 
 | |
|     def format(self):
 | |
|         return self.text, self.alignment
 | |
| 
 | |
|     def xml(self):
 | |
|         s = '<value align="%s" format="%s"><string>%s</string></value>'
 | |
|         return s % (
 | |
|             align2xml[self.alignment],
 | |
|             self.fmt,
 | |
|             cgi.escape(self.text))
 | |
| 
 | |
| class FormulaCell(BaseCell):
 | |
| 
 | |
|     def __init__(self, formula, fmt="%s", alignment=RIGHT):
 | |
|         assert alignment in (LEFT, CENTER, RIGHT)
 | |
|         self.formula = formula
 | |
|         self.translated = translate(self.formula)
 | |
|         self.fmt = fmt
 | |
|         self.alignment = alignment
 | |
|         self.reset()
 | |
| 
 | |
|     def reset(self):
 | |
|         self.value = None
 | |
| 
 | |
|     def recalc(self, rexec):
 | |
|         if self.value is None:
 | |
|             try:
 | |
|                 # A hack to evaluate expressions using true division
 | |
|                 rexec.r_exec("from __future__ import division\n" +
 | |
|                              "__value__ = eval(%s)" % repr(self.translated))
 | |
|                 self.value = rexec.r_eval("__value__")
 | |
|             except:
 | |
|                 exc = sys.exc_info()[0]
 | |
|                 if hasattr(exc, "__name__"):
 | |
|                     self.value = exc.__name__
 | |
|                 else:
 | |
|                     self.value = str(exc)
 | |
|         return self.value
 | |
| 
 | |
|     def format(self):
 | |
|         try:
 | |
|             text = self.fmt % self.value
 | |
|         except:
 | |
|             text = str(self.value)
 | |
|         return text, self.alignment
 | |
| 
 | |
|     def xml(self):
 | |
|         return '<formula align="%s" format="%s">%s</formula>' % (
 | |
|             align2xml[self.alignment],
 | |
|             self.fmt,
 | |
|             self.formula)
 | |
| 
 | |
|     def renumber(self, x1, y1, x2, y2, dx, dy):
 | |
|         out = []
 | |
|         for part in re.split('(\w+)', self.formula):
 | |
|             m = re.match('^([A-Z]+)([1-9][0-9]*)$', part)
 | |
|             if m is not None:
 | |
|                 sx, sy = m.groups()
 | |
|                 x = colname2num(sx)
 | |
|                 y = int(sy)
 | |
|                 if x1 <= x <= x2 and y1 <= y <= y2:
 | |
|                     part = cellname(x+dx, y+dy)
 | |
|             out.append(part)
 | |
|         return FormulaCell("".join(out), self.fmt, self.alignment)
 | |
| 
 | |
| def translate(formula):
 | |
|     """Translate a formula containing fancy cell names to valid Python code.
 | |
| 
 | |
|     Examples:
 | |
|         B4 -> cell(2, 4)
 | |
|         B4:Z100 -> cells(2, 4, 26, 100)
 | |
|     """
 | |
|     out = []
 | |
|     for part in re.split(r"(\w+(?::\w+)?)", formula):
 | |
|         m = re.match(r"^([A-Z]+)([1-9][0-9]*)(?::([A-Z]+)([1-9][0-9]*))?$", part)
 | |
|         if m is None:
 | |
|             out.append(part)
 | |
|         else:
 | |
|             x1, y1, x2, y2 = m.groups()
 | |
|             x1 = colname2num(x1)
 | |
|             if x2 is None:
 | |
|                 s = "cell(%s, %s)" % (x1, y1)
 | |
|             else:
 | |
|                 x2 = colname2num(x2)
 | |
|                 s = "cells(%s, %s, %s, %s)" % (x1, y1, x2, y2)
 | |
|             out.append(s)
 | |
|     return "".join(out)
 | |
| 
 | |
| def cellname(x, y):
 | |
|     "Translate a cell coordinate to a fancy cell name (e.g. (1, 1)->'A1')."
 | |
|     assert x > 0 # Column 0 has an empty name, so can't use that
 | |
|     return colnum2name(x) + str(y)
 | |
| 
 | |
| def colname2num(s):
 | |
|     "Translate a column name to number (e.g. 'A'->1, 'Z'->26, 'AA'->27)."
 | |
|     s = s.upper()
 | |
|     n = 0
 | |
|     for c in s:
 | |
|         assert 'A' <= c <= 'Z'
 | |
|         n = n*26 + ord(c) - ord('A') + 1
 | |
|     return n
 | |
| 
 | |
| def colnum2name(n):
 | |
|     "Translate a column number to name (e.g. 1->'A', etc.)."
 | |
|     assert n > 0
 | |
|     s = ""
 | |
|     while n:
 | |
|         n, m = divmod(n-1, 26)
 | |
|         s = chr(m+ord('A')) + s
 | |
|     return s
 | |
| 
 | |
| import Tkinter as Tk
 | |
| 
 | |
| class SheetGUI:
 | |
| 
 | |
|     """Beginnings of a GUI for a spreadsheet.
 | |
| 
 | |
|     TO DO:
 | |
|     - clear multiple cells
 | |
|     - Insert, clear, remove rows or columns
 | |
|     - Show new contents while typing
 | |
|     - Scroll bars
 | |
|     - Grow grid when window is grown
 | |
|     - Proper menus
 | |
|     - Undo, redo
 | |
|     - Cut, copy and paste
 | |
|     - Formatting and alignment
 | |
|     """
 | |
| 
 | |
|     def __init__(self, filename="sheet1.xml", rows=10, columns=5):
 | |
|         """Constructor.
 | |
| 
 | |
|         Load the sheet from the filename argument.
 | |
|         Set up the Tk widget tree.
 | |
|         """
 | |
|         # Create and load the sheet
 | |
|         self.filename = filename
 | |
|         self.sheet = Sheet()
 | |
|         if os.path.isfile(filename):
 | |
|             self.sheet.load(filename)
 | |
|         # Calculate the needed grid size
 | |
|         maxx, maxy = self.sheet.getsize()
 | |
|         rows = max(rows, maxy)
 | |
|         columns = max(columns, maxx)
 | |
|         # Create the widgets
 | |
|         self.root = Tk.Tk()
 | |
|         self.root.wm_title("Spreadsheet: %s" % self.filename)
 | |
|         self.beacon = Tk.Label(self.root, text="A1",
 | |
|                                font=('helvetica', 16, 'bold'))
 | |
|         self.entry = Tk.Entry(self.root)
 | |
|         self.savebutton = Tk.Button(self.root, text="Save",
 | |
|                                     command=self.save)
 | |
|         self.cellgrid = Tk.Frame(self.root)
 | |
|         # Configure the widget lay-out
 | |
|         self.cellgrid.pack(side="bottom", expand=1, fill="both")
 | |
|         self.beacon.pack(side="left")
 | |
|         self.savebutton.pack(side="right")
 | |
|         self.entry.pack(side="left", expand=1, fill="x")
 | |
|         # Bind some events
 | |
|         self.entry.bind("<Return>", self.return_event)
 | |
|         self.entry.bind("<Shift-Return>", self.shift_return_event)
 | |
|         self.entry.bind("<Tab>", self.tab_event)
 | |
|         self.entry.bind("<Shift-Tab>", self.shift_tab_event)
 | |
|         self.entry.bind("<Delete>", self.delete_event)
 | |
|         self.entry.bind("<Escape>", self.escape_event)
 | |
|         # Now create the cell grid
 | |
|         self.makegrid(rows, columns)
 | |
|         # Select the top-left cell
 | |
|         self.currentxy = None
 | |
|         self.cornerxy = None
 | |
|         self.setcurrent(1, 1)
 | |
|         # Copy the sheet cells to the GUI cells
 | |
|         self.sync()
 | |
| 
 | |
|     def delete_event(self, event):
 | |
|         if self.cornerxy != self.currentxy and self.cornerxy is not None:
 | |
|             self.sheet.clearcells(*(self.currentxy + self.cornerxy))
 | |
|         else:
 | |
|             self.sheet.clearcell(*self.currentxy)
 | |
|         self.sync()
 | |
|         self.entry.delete(0, 'end')
 | |
|         return "break"
 | |
| 
 | |
|     def escape_event(self, event):
 | |
|         x, y = self.currentxy
 | |
|         self.load_entry(x, y)
 | |
| 
 | |
|     def load_entry(self, x, y):
 | |
|         cell = self.sheet.getcell(x, y)
 | |
|         if cell is None:
 | |
|             text = ""
 | |
|         elif isinstance(cell, FormulaCell):
 | |
|             text = '=' + cell.formula
 | |
|         else:
 | |
|             text, alignment = cell.format()
 | |
|         self.entry.delete(0, 'end')
 | |
|         self.entry.insert(0, text)
 | |
|         self.entry.selection_range(0, 'end')
 | |
| 
 | |
|     def makegrid(self, rows, columns):
 | |
|         """Helper to create the grid of GUI cells.
 | |
| 
 | |
|         The edge (x==0 or y==0) is filled with labels; the rest is real cells.
 | |
|         """
 | |
|         self.rows = rows
 | |
|         self.columns = columns
 | |
|         self.gridcells = {}
 | |
|         # Create the top left corner cell (which selects all)
 | |
|         cell = Tk.Label(self.cellgrid, relief='raised')
 | |
|         cell.grid_configure(column=0, row=0, sticky='NSWE')
 | |
|         cell.bind("<ButtonPress-1>", self.selectall)
 | |
|         # Create the top row of labels, and confiure the grid columns
 | |
|         for x in range(1, columns+1):
 | |
|             self.cellgrid.grid_columnconfigure(x, minsize=64)
 | |
|             cell = Tk.Label(self.cellgrid, text=colnum2name(x), relief='raised')
 | |
|             cell.grid_configure(column=x, row=0, sticky='WE')
 | |
|             self.gridcells[x, 0] = cell
 | |
|             cell.__x = x
 | |
|             cell.__y = 0
 | |
|             cell.bind("<ButtonPress-1>", self.selectcolumn)
 | |
|             cell.bind("<B1-Motion>", self.extendcolumn)
 | |
|             cell.bind("<ButtonRelease-1>", self.extendcolumn)
 | |
|             cell.bind("<Shift-Button-1>", self.extendcolumn)
 | |
|         # Create the leftmost column of labels
 | |
|         for y in range(1, rows+1):
 | |
|             cell = Tk.Label(self.cellgrid, text=str(y), relief='raised')
 | |
|             cell.grid_configure(column=0, row=y, sticky='WE')
 | |
|             self.gridcells[0, y] = cell
 | |
|             cell.__x = 0
 | |
|             cell.__y = y
 | |
|             cell.bind("<ButtonPress-1>", self.selectrow)
 | |
|             cell.bind("<B1-Motion>", self.extendrow)
 | |
|             cell.bind("<ButtonRelease-1>", self.extendrow)
 | |
|             cell.bind("<Shift-Button-1>", self.extendrow)
 | |
|         # Create the real cells
 | |
|         for x in range(1, columns+1):
 | |
|             for y in range(1, rows+1):
 | |
|                 cell = Tk.Label(self.cellgrid, relief='sunken',
 | |
|                                 bg='white', fg='black')
 | |
|                 cell.grid_configure(column=x, row=y, sticky='NSWE')
 | |
|                 self.gridcells[x, y] = cell
 | |
|                 cell.__x = x
 | |
|                 cell.__y = y
 | |
|                 # Bind mouse events
 | |
|                 cell.bind("<ButtonPress-1>", self.press)
 | |
|                 cell.bind("<B1-Motion>", self.motion)
 | |
|                 cell.bind("<ButtonRelease-1>", self.release)
 | |
|                 cell.bind("<Shift-Button-1>", self.release)
 | |
| 
 | |
|     def selectall(self, event):
 | |
|         self.setcurrent(1, 1)
 | |
|         self.setcorner(sys.maxint, sys.maxint)
 | |
| 
 | |
|     def selectcolumn(self, event):
 | |
|         x, y = self.whichxy(event)
 | |
|         self.setcurrent(x, 1)
 | |
|         self.setcorner(x, sys.maxint)
 | |
| 
 | |
|     def extendcolumn(self, event):
 | |
|         x, y = self.whichxy(event)
 | |
|         if x > 0:
 | |
|             self.setcurrent(self.currentxy[0], 1)
 | |
|             self.setcorner(x, sys.maxint)
 | |
| 
 | |
|     def selectrow(self, event):
 | |
|         x, y = self.whichxy(event)
 | |
|         self.setcurrent(1, y)
 | |
|         self.setcorner(sys.maxint, y)
 | |
| 
 | |
|     def extendrow(self, event):
 | |
|         x, y = self.whichxy(event)
 | |
|         if y > 0:
 | |
|             self.setcurrent(1, self.currentxy[1])
 | |
|             self.setcorner(sys.maxint, y)
 | |
| 
 | |
|     def press(self, event):
 | |
|         x, y = self.whichxy(event)
 | |
|         if x > 0 and y > 0:
 | |
|             self.setcurrent(x, y)
 | |
| 
 | |
|     def motion(self, event):
 | |
|         x, y = self.whichxy(event)
 | |
|         if x > 0 and y > 0:
 | |
|             self.setcorner(x, y)
 | |
| 
 | |
|     release = motion
 | |
| 
 | |
|     def whichxy(self, event):
 | |
|         w = self.cellgrid.winfo_containing(event.x_root, event.y_root)
 | |
|         if w is not None and isinstance(w, Tk.Label):
 | |
|             try:
 | |
|                 return w.__x, w.__y
 | |
|             except AttributeError:
 | |
|                 pass
 | |
|         return 0, 0
 | |
| 
 | |
|     def save(self):
 | |
|         self.sheet.save(self.filename)
 | |
| 
 | |
|     def setcurrent(self, x, y):
 | |
|         "Make (x, y) the current cell."
 | |
|         if self.currentxy is not None:
 | |
|             self.change_cell()
 | |
|         self.clearfocus()
 | |
|         self.beacon['text'] = cellname(x, y)
 | |
|         self.load_entry(x, y)
 | |
|         self.entry.focus_set()
 | |
|         self.currentxy = x, y
 | |
|         self.cornerxy = None
 | |
|         gridcell = self.gridcells.get(self.currentxy)
 | |
|         if gridcell is not None:
 | |
|             gridcell['bg'] = 'yellow'
 | |
| 
 | |
|     def setcorner(self, x, y):
 | |
|         if self.currentxy is None or self.currentxy == (x, y):
 | |
|             self.setcurrent(x, y)
 | |
|             return
 | |
|         self.clearfocus()
 | |
|         self.cornerxy = x, y
 | |
|         x1, y1 = self.currentxy
 | |
|         x2, y2 = self.cornerxy or self.currentxy
 | |
|         if x1 > x2:
 | |
|             x1, x2 = x2, x1
 | |
|         if y1 > y2:
 | |
|             y1, y2 = y2, y1
 | |
|         for (x, y), cell in self.gridcells.iteritems():
 | |
|             if x1 <= x <= x2 and y1 <= y <= y2:
 | |
|                 cell['bg'] = 'lightBlue'
 | |
|         gridcell = self.gridcells.get(self.currentxy)
 | |
|         if gridcell is not None:
 | |
|             gridcell['bg'] = 'yellow'
 | |
|         self.setbeacon(x1, y1, x2, y2)
 | |
| 
 | |
|     def setbeacon(self, x1, y1, x2, y2):
 | |
|         if x1 == y1 == 1 and x2 == y2 == sys.maxint:
 | |
|             name = ":"
 | |
|         elif (x1, x2) == (1, sys.maxint):
 | |
|             if y1 == y2:
 | |
|                 name = "%d" % y1
 | |
|             else:
 | |
|                 name = "%d:%d" % (y1, y2)
 | |
|         elif (y1, y2) == (1, sys.maxint):
 | |
|             if x1 == x2:
 | |
|                 name = "%s" % colnum2name(x1)
 | |
|             else:
 | |
|                 name = "%s:%s" % (colnum2name(x1), colnum2name(x2))
 | |
|         else:
 | |
|             name1 = cellname(*self.currentxy)
 | |
|             name2 = cellname(*self.cornerxy)
 | |
|             name = "%s:%s" % (name1, name2)
 | |
|         self.beacon['text'] = name
 | |
| 
 | |
| 
 | |
|     def clearfocus(self):
 | |
|         if self.currentxy is not None:
 | |
|             x1, y1 = self.currentxy
 | |
|             x2, y2 = self.cornerxy or self.currentxy
 | |
|             if x1 > x2:
 | |
|                 x1, x2 = x2, x1
 | |
|             if y1 > y2:
 | |
|                 y1, y2 = y2, y1
 | |
|             for (x, y), cell in self.gridcells.iteritems():
 | |
|                 if x1 <= x <= x2 and y1 <= y <= y2:
 | |
|                     cell['bg'] = 'white'
 | |
| 
 | |
|     def return_event(self, event):
 | |
|         "Callback for the Return key."
 | |
|         self.change_cell()
 | |
|         x, y = self.currentxy
 | |
|         self.setcurrent(x, y+1)
 | |
|         return "break"
 | |
| 
 | |
|     def shift_return_event(self, event):
 | |
|         "Callback for the Return key with Shift modifier."
 | |
|         self.change_cell()
 | |
|         x, y = self.currentxy
 | |
|         self.setcurrent(x, max(1, y-1))
 | |
|         return "break"
 | |
| 
 | |
|     def tab_event(self, event):
 | |
|         "Callback for the Tab key."
 | |
|         self.change_cell()
 | |
|         x, y = self.currentxy
 | |
|         self.setcurrent(x+1, y)
 | |
|         return "break"
 | |
| 
 | |
|     def shift_tab_event(self, event):
 | |
|         "Callback for the Tab key with Shift modifier."
 | |
|         self.change_cell()
 | |
|         x, y = self.currentxy
 | |
|         self.setcurrent(max(1, x-1), y)
 | |
|         return "break"
 | |
| 
 | |
|     def change_cell(self):
 | |
|         "Set the current cell from the entry widget."
 | |
|         x, y = self.currentxy
 | |
|         text = self.entry.get()
 | |
|         cell = None
 | |
|         if text.startswith('='):
 | |
|             cell = FormulaCell(text[1:])
 | |
|         else:
 | |
|             for cls in int, long, float, complex:
 | |
|                 try:
 | |
|                     value = cls(text)
 | |
|                 except:
 | |
|                     continue
 | |
|                 else:
 | |
|                     cell = NumericCell(value)
 | |
|                     break
 | |
|         if cell is None and text:
 | |
|             cell = StringCell(text)
 | |
|         if cell is None:
 | |
|             self.sheet.clearcell(x, y)
 | |
|         else:
 | |
|             self.sheet.setcell(x, y, cell)
 | |
|         self.sync()
 | |
| 
 | |
|     def sync(self):
 | |
|         "Fill the GUI cells from the sheet cells."
 | |
|         self.sheet.recalc()
 | |
|         for (x, y), gridcell in self.gridcells.iteritems():
 | |
|             if x == 0 or y == 0:
 | |
|                 continue
 | |
|             cell = self.sheet.getcell(x, y)
 | |
|             if cell is None:
 | |
|                 gridcell['text'] = ""
 | |
|             else:
 | |
|                 if hasattr(cell, 'format'):
 | |
|                     text, alignment = cell.format()
 | |
|                 else:
 | |
|                     text, alignment = str(cell), LEFT
 | |
|                 gridcell['text'] = text
 | |
|                 gridcell['anchor'] = align2anchor[alignment]
 | |
| 
 | |
| 
 | |
| def test_basic():
 | |
|     "Basic non-gui self-test."
 | |
|     import os
 | |
|     a = Sheet()
 | |
|     for x in range(1, 11):
 | |
|         for y in range(1, 11):
 | |
|             if x == 1:
 | |
|                 cell = NumericCell(y)
 | |
|             elif y == 1:
 | |
|                 cell = NumericCell(x)
 | |
|             else:
 | |
|                 c1 = cellname(x, 1)
 | |
|                 c2 = cellname(1, y)
 | |
|                 formula = "%s*%s" % (c1, c2)
 | |
|                 cell = FormulaCell(formula)
 | |
|             a.setcell(x, y, cell)
 | |
| ##    if os.path.isfile("sheet1.xml"):
 | |
| ##        print "Loading from sheet1.xml"
 | |
| ##        a.load("sheet1.xml")
 | |
|     a.display()
 | |
|     a.save("sheet1.xml")
 | |
| 
 | |
| def test_gui():
 | |
|     "GUI test."
 | |
|     if sys.argv[1:]:
 | |
|         filename = sys.argv[1]
 | |
|     else:
 | |
|         filename = "sheet1.xml"
 | |
|     g = SheetGUI(filename)
 | |
|     g.root.mainloop()
 | |
| 
 | |
| if __name__ == '__main__':
 | |
|     #test_basic()
 | |
|     test_gui()
 |