1 #!/usr/bin/env python3 2 3 """ 4 SS1 -- a spreadsheet-like application. 5 """ 6 7 import os 8 import re 9 import sys 10 from xml.parsers import expat 11 from xml.sax.saxutils import escape 12 13 LEFT, CENTER, RIGHT = "LEFT", "CENTER", "RIGHT" 14 15 def ljust(x, n): 16 return x.ljust(n) 17 def center(x, n): 18 return x.center(n) 19 def rjust(x, n): 20 return x.rjust(n) 21 align2action = {LEFT: ljust, CENTER: center, RIGHT: rjust} 22 23 align2xml = {LEFT: "left", CENTER: "center", RIGHT: "right"} 24 xml2align = {"left": LEFT, "center": CENTER, "right": RIGHT} 25 26 align2anchor = {LEFT: "w", CENTER: "center", RIGHT: "e"} 27 28 def sum(seq): 29 total = 0 30 for x in seq: 31 if x is not None: 32 total += x 33 return total 34 35 class Sheet: 36 37 def __init__(self): 38 self.cells = {} # {(x, y): cell, ...} 39 self.ns = dict( 40 cell = self.cellvalue, 41 cells = self.multicellvalue, 42 sum = sum, 43 ) 44 45 def cellvalue(self, x, y): 46 cell = self.getcell(x, y) 47 if hasattr(cell, 'recalc'): 48 return cell.recalc(self.ns) 49 else: 50 return cell 51 52 def multicellvalue(self, x1, y1, x2, y2): 53 if x1 > x2: 54 x1, x2 = x2, x1 55 if y1 > y2: 56 y1, y2 = y2, y1 57 seq = [] 58 for y in range(y1, y2+1): 59 for x in range(x1, x2+1): 60 seq.append(self.cellvalue(x, y)) 61 return seq 62 63 def getcell(self, x, y): 64 return self.cells.get((x, y)) 65 66 def setcell(self, x, y, cell): 67 assert x > 0 and y > 0 68 assert isinstance(cell, BaseCell) 69 self.cells[x, y] = cell 70 71 def clearcell(self, x, y): 72 try: 73 del self.cells[x, y] 74 except KeyError: 75 pass 76 77 def clearcells(self, x1, y1, x2, y2): 78 for xy in self.selectcells(x1, y1, x2, y2): 79 del self.cells[xy] 80 81 def clearrows(self, y1, y2): 82 self.clearcells(0, y1, sys.maxsize, y2) 83 84 def clearcolumns(self, x1, x2): 85 self.clearcells(x1, 0, x2, sys.maxsize) 86 87 def selectcells(self, x1, y1, x2, y2): 88 if x1 > x2: 89 x1, x2 = x2, x1 90 if y1 > y2: 91 y1, y2 = y2, y1 92 return [(x, y) for x, y in self.cells 93 if x1 <= x <= x2 and y1 <= y <= y2] 94 95 def movecells(self, x1, y1, x2, y2, dx, dy): 96 if dx == 0 and dy == 0: 97 return 98 if x1 > x2: 99 x1, x2 = x2, x1 100 if y1 > y2: 101 y1, y2 = y2, y1 102 assert x1+dx > 0 and y1+dy > 0 103 new = {} 104 for x, y in self.cells: 105 cell = self.cells[x, y] 106 if hasattr(cell, 'renumber'): 107 cell = cell.renumber(x1, y1, x2, y2, dx, dy) 108 if x1 <= x <= x2 and y1 <= y <= y2: 109 x += dx 110 y += dy 111 new[x, y] = cell 112 self.cells = new 113 114 def insertrows(self, y, n): 115 assert n > 0 116 self.movecells(0, y, sys.maxsize, sys.maxsize, 0, n) 117 118 def deleterows(self, y1, y2): 119 if y1 > y2: 120 y1, y2 = y2, y1 121 self.clearrows(y1, y2) 122 self.movecells(0, y2+1, sys.maxsize, sys.maxsize, 0, y1-y2-1) 123 124 def insertcolumns(self, x, n): 125 assert n > 0 126 self.movecells(x, 0, sys.maxsize, sys.maxsize, n, 0) 127 128 def deletecolumns(self, x1, x2): 129 if x1 > x2: 130 x1, x2 = x2, x1 131 self.clearcells(x1, x2) 132 self.movecells(x2+1, 0, sys.maxsize, sys.maxsize, x1-x2-1, 0) 133 134 def getsize(self): 135 maxx = maxy = 0 136 for x, y in self.cells: 137 maxx = max(maxx, x) 138 maxy = max(maxy, y) 139 return maxx, maxy 140 141 def reset(self): 142 for cell in self.cells.values(): 143 if hasattr(cell, 'reset'): 144 cell.reset() 145 146 def recalc(self): 147 self.reset() 148 for cell in self.cells.values(): 149 if hasattr(cell, 'recalc'): 150 cell.recalc(self.ns) 151 152 def display(self): 153 maxx, maxy = self.getsize() 154 width, height = maxx+1, maxy+1 155 colwidth = [1] * width 156 full = {} 157 # Add column heading labels in row 0 158 for x in range(1, width): 159 full[x, 0] = text, alignment = colnum2name(x), RIGHT 160 colwidth[x] = max(colwidth[x], len(text)) 161 # Add row labels in column 0 162 for y in range(1, height): 163 full[0, y] = text, alignment = str(y), RIGHT 164 colwidth[0] = max(colwidth[0], len(text)) 165 # Add sheet cells in columns with x>0 and y>0 166 for (x, y), cell in self.cells.items(): 167 if x <= 0 or y <= 0: 168 continue 169 if hasattr(cell, 'recalc'): 170 cell.recalc(self.ns) 171 if hasattr(cell, 'format'): 172 text, alignment = cell.format() 173 assert isinstance(text, str) 174 assert alignment in (LEFT, CENTER, RIGHT) 175 else: 176 text = str(cell) 177 if isinstance(cell, str): 178 alignment = LEFT 179 else: 180 alignment = RIGHT 181 full[x, y] = (text, alignment) 182 colwidth[x] = max(colwidth[x], len(text)) 183 # Calculate the horizontal separator line (dashes and dots) 184 sep = "" 185 for x in range(width): 186 if sep: 187 sep += "+" 188 sep += "-"*colwidth[x] 189 # Now print The full grid 190 for y in range(height): 191 line = "" 192 for x in range(width): 193 text, alignment = full.get((x, y)) or ("", LEFT) 194 text = align2action[alignment](text, colwidth[x]) 195 if line: 196 line += '|' 197 line += text 198 print(line) 199 if y == 0: 200 print(sep) 201 202 def xml(self): 203 out = ['<spreadsheet>'] 204 for (x, y), cell in self.cells.items(): 205 if hasattr(cell, 'xml'): 206 cellxml = cell.xml() 207 else: 208 cellxml = '<value>%s</value>' % escape(cell) 209 out.append('<cell row="%s" col="%s">\n %s\n</cell>' % 210 (y, x, cellxml)) 211 out.append('</spreadsheet>') 212 return '\n'.join(out) 213 214 def save(self, filename): 215 text = self.xml() 216 with open(filename, "w", encoding='utf-8') as f: 217 f.write(text) 218 if text and not text.endswith('\n'): 219 f.write('\n') 220 221 def load(self, filename): 222 with open(filename, 'rb') as f: 223 SheetParser(self).parsefile(f) 224 225 class SheetParser: 226 227 def __init__(self, sheet): 228 self.sheet = sheet 229 230 def parsefile(self, f): 231 parser = expat.ParserCreate() 232 parser.StartElementHandler = self.startelement 233 parser.EndElementHandler = self.endelement 234 parser.CharacterDataHandler = self.data 235 parser.ParseFile(f) 236 237 def startelement(self, tag, attrs): 238 method = getattr(self, 'start_'+tag, None) 239 if method: 240 method(attrs) 241 self.texts = [] 242 243 def data(self, text): 244 self.texts.append(text) 245 246 def endelement(self, tag): 247 method = getattr(self, 'end_'+tag, None) 248 if method: 249 method("".join(self.texts)) 250 251 def start_cell(self, attrs): 252 self.y = int(attrs.get("row")) 253 self.x = int(attrs.get("col")) 254 255 def start_value(self, attrs): 256 self.fmt = attrs.get('format') 257 self.alignment = xml2align.get(attrs.get('align')) 258 259 start_formula = start_value 260 261 def end_int(self, text): 262 try: 263 self.value = int(text) 264 except (TypeError, ValueError): 265 self.value = None 266 267 end_long = end_int 268 269 def end_double(self, text): 270 try: 271 self.value = float(text) 272 except (TypeError, ValueError): 273 self.value = None 274 275 def end_complex(self, text): 276 try: 277 self.value = complex(text) 278 except (TypeError, ValueError): 279 self.value = None 280 281 def end_string(self, text): 282 self.value = text 283 284 def end_value(self, text): 285 if isinstance(self.value, BaseCell): 286 self.cell = self.value 287 elif isinstance(self.value, str): 288 self.cell = StringCell(self.value, 289 self.fmt or "%s", 290 self.alignment or LEFT) 291 else: 292 self.cell = NumericCell(self.value, 293 self.fmt or "%s", 294 self.alignment or RIGHT) 295 296 def end_formula(self, text): 297 self.cell = FormulaCell(text, 298 self.fmt or "%s", 299 self.alignment or RIGHT) 300 301 def end_cell(self, text): 302 self.sheet.setcell(self.x, self.y, self.cell) 303 304 class BaseCell: 305 __init__ = None # Must provide 306 """Abstract base class for sheet cells. 307 308 Subclasses may but needn't provide the following APIs: 309 310 cell.reset() -- prepare for recalculation 311 cell.recalc(ns) -> value -- recalculate formula 312 cell.format() -> (value, alignment) -- return formatted value 313 cell.xml() -> string -- return XML 314 """ 315 316 class NumericCell(BaseCell): 317 318 def __init__(self, value, fmt="%s", alignment=RIGHT): 319 assert isinstance(value, (int, float, complex)) 320 assert alignment in (LEFT, CENTER, RIGHT) 321 self.value = value 322 self.fmt = fmt 323 self.alignment = alignment 324 325 def recalc(self, ns): 326 return self.value 327 328 def format(self): 329 try: 330 text = self.fmt % self.value 331 except: 332 text = str(self.value) 333 return text, self.alignment 334 335 def xml(self): 336 method = getattr(self, '_xml_' + type(self.value).__name__) 337 return '<value align="%s" format="%s">%s</value>' % ( 338 align2xml[self.alignment], 339 self.fmt, 340 method()) 341 342 def _xml_int(self): 343 if -2**31 <= self.value < 2**31: 344 return '<int>%s</int>' % self.value 345 else: 346 return '<long>%s</long>' % self.value 347 348 def _xml_float(self): 349 return '<double>%r</double>' % self.value 350 351 def _xml_complex(self): 352 return '<complex>%r</complex>' % self.value 353 354 class StringCell(BaseCell): 355 356 def __init__(self, text, fmt="%s", alignment=LEFT): 357 assert isinstance(text, str) 358 assert alignment in (LEFT, CENTER, RIGHT) 359 self.text = text 360 self.fmt = fmt 361 self.alignment = alignment 362 363 def recalc(self, ns): 364 return self.text 365 366 def format(self): 367 return self.text, self.alignment 368 369 def xml(self): 370 s = '<value align="%s" format="%s"><string>%s</string></value>' 371 return s % ( 372 align2xml[self.alignment], 373 self.fmt, 374 escape(self.text)) 375 376 class FormulaCell(BaseCell): 377 378 def __init__(self, formula, fmt="%s", alignment=RIGHT): 379 assert alignment in (LEFT, CENTER, RIGHT) 380 self.formula = formula 381 self.translated = translate(self.formula) 382 self.fmt = fmt 383 self.alignment = alignment 384 self.reset() 385 386 def reset(self): 387 self.value = None 388 389 def recalc(self, ns): 390 if self.value is None: 391 try: 392 self.value = eval(self.translated, ns) 393 except: 394 exc = sys.exc_info()[0] 395 if hasattr(exc, "__name__"): 396 self.value = exc.__name__ 397 else: 398 self.value = str(exc) 399 return self.value 400 401 def format(self): 402 try: 403 text = self.fmt % self.value 404 except: 405 text = str(self.value) 406 return text, self.alignment 407 408 def xml(self): 409 return '<formula align="%s" format="%s">%s</formula>' % ( 410 align2xml[self.alignment], 411 self.fmt, 412 escape(self.formula)) 413 414 def renumber(self, x1, y1, x2, y2, dx, dy): 415 out = [] 416 for part in re.split(r'(\w+)', self.formula): 417 m = re.match('^([A-Z]+)([1-9][0-9]*)$', part) 418 if m is not None: 419 sx, sy = m.groups() 420 x = colname2num(sx) 421 y = int(sy) 422 if x1 <= x <= x2 and y1 <= y <= y2: 423 part = cellname(x+dx, y+dy) 424 out.append(part) 425 return FormulaCell("".join(out), self.fmt, self.alignment) 426 427 def translate(formula): 428 """Translate a formula containing fancy cell names to valid Python code. 429 430 Examples: 431 B4 -> cell(2, 4) 432 B4:Z100 -> cells(2, 4, 26, 100) 433 """ 434 out = [] 435 for part in re.split(r"(\w+(?::\w+)?)", formula): 436 m = re.match(r"^([A-Z]+)([1-9][0-9]*)(?::([A-Z]+)([1-9][0-9]*))?$", part) 437 if m is None: 438 out.append(part) 439 else: 440 x1, y1, x2, y2 = m.groups() 441 x1 = colname2num(x1) 442 if x2 is None: 443 s = "cell(%s, %s)" % (x1, y1) 444 else: 445 x2 = colname2num(x2) 446 s = "cells(%s, %s, %s, %s)" % (x1, y1, x2, y2) 447 out.append(s) 448 return "".join(out) 449 450 def cellname(x, y): 451 "Translate a cell coordinate to a fancy cell name (e.g. (1, 1)->'A1')." 452 assert x > 0 # Column 0 has an empty name, so can't use that 453 return colnum2name(x) + str(y) 454 455 def colname2num(s): 456 "Translate a column name to number (e.g. 'A'->1, 'Z'->26, 'AA'->27)." 457 s = s.upper() 458 n = 0 459 for c in s: 460 assert 'A' <= c <= 'Z' 461 n = n*26 + ord(c) - ord('A') + 1 462 return n 463 464 def colnum2name(n): 465 "Translate a column number to name (e.g. 1->'A', etc.)." 466 assert n > 0 467 s = "" 468 while n: 469 n, m = divmod(n-1, 26) 470 s = chr(m+ord('A')) + s 471 return s 472 473 import tkinter as Tk 474 475 class SheetGUI: 476 477 """Beginnings of a GUI for a spreadsheet. 478 479 TO DO: 480 - clear multiple cells 481 - Insert, clear, remove rows or columns 482 - Show new contents while typing 483 - Scroll bars 484 - Grow grid when window is grown 485 - Proper menus 486 - Undo, redo 487 - Cut, copy and paste 488 - Formatting and alignment 489 """ 490 491 def __init__(self, filename="sheet1.xml", rows=10, columns=5): 492 """Constructor. 493 494 Load the sheet from the filename argument. 495 Set up the Tk widget tree. 496 """ 497 # Create and load the sheet 498 self.filename = filename 499 self.sheet = Sheet() 500 if os.path.isfile(filename): 501 self.sheet.load(filename) 502 # Calculate the needed grid size 503 maxx, maxy = self.sheet.getsize() 504 rows = max(rows, maxy) 505 columns = max(columns, maxx) 506 # Create the widgets 507 self.root = Tk.Tk() 508 self.root.wm_title("Spreadsheet: %s" % self.filename) 509 self.beacon = Tk.Label(self.root, text="A1", 510 font=('helvetica', 16, 'bold')) 511 self.entry = Tk.Entry(self.root) 512 self.savebutton = Tk.Button(self.root, text="Save", 513 command=self.save) 514 self.cellgrid = Tk.Frame(self.root) 515 # Configure the widget lay-out 516 self.cellgrid.pack(side="bottom", expand=1, fill="both") 517 self.beacon.pack(side="left") 518 self.savebutton.pack(side="right") 519 self.entry.pack(side="left", expand=1, fill="x") 520 # Bind some events 521 self.entry.bind("<Return>", self.return_event) 522 self.entry.bind("<Shift-Return>", self.shift_return_event) 523 self.entry.bind("<Tab>", self.tab_event) 524 self.entry.bind("<Shift-Tab>", self.shift_tab_event) 525 self.entry.bind("<Delete>", self.delete_event) 526 self.entry.bind("<Escape>", self.escape_event) 527 # Now create the cell grid 528 self.makegrid(rows, columns) 529 # Select the top-left cell 530 self.currentxy = None 531 self.cornerxy = None 532 self.setcurrent(1, 1) 533 # Copy the sheet cells to the GUI cells 534 self.sync() 535 536 def delete_event(self, event): 537 if self.cornerxy != self.currentxy and self.cornerxy is not None: 538 self.sheet.clearcells(*(self.currentxy + self.cornerxy)) 539 else: 540 self.sheet.clearcell(*self.currentxy) 541 self.sync() 542 self.entry.delete(0, 'end') 543 return "break" 544 545 def escape_event(self, event): 546 x, y = self.currentxy 547 self.load_entry(x, y) 548 549 def load_entry(self, x, y): 550 cell = self.sheet.getcell(x, y) 551 if cell is None: 552 text = "" 553 elif isinstance(cell, FormulaCell): 554 text = '=' + cell.formula 555 else: 556 text, alignment = cell.format() 557 self.entry.delete(0, 'end') 558 self.entry.insert(0, text) 559 self.entry.selection_range(0, 'end') 560 561 def makegrid(self, rows, columns): 562 """Helper to create the grid of GUI cells. 563 564 The edge (x==0 or y==0) is filled with labels; the rest is real cells. 565 """ 566 self.rows = rows 567 self.columns = columns 568 self.gridcells = {} 569 # Create the top left corner cell (which selects all) 570 cell = Tk.Label(self.cellgrid, relief='raised') 571 cell.grid_configure(column=0, row=0, sticky='NSWE') 572 cell.bind("<ButtonPress-1>", self.selectall) 573 # Create the top row of labels, and configure the grid columns 574 for x in range(1, columns+1): 575 self.cellgrid.grid_columnconfigure(x, minsize=64) 576 cell = Tk.Label(self.cellgrid, text=colnum2name(x), relief='raised') 577 cell.grid_configure(column=x, row=0, sticky='WE') 578 self.gridcells[x, 0] = cell 579 cell.__x = x 580 cell.__y = 0 581 cell.bind("<ButtonPress-1>", self.selectcolumn) 582 cell.bind("<B1-Motion>", self.extendcolumn) 583 cell.bind("<ButtonRelease-1>", self.extendcolumn) 584 cell.bind("<Shift-Button-1>", self.extendcolumn) 585 # Create the leftmost column of labels 586 for y in range(1, rows+1): 587 cell = Tk.Label(self.cellgrid, text=str(y), relief='raised') 588 cell.grid_configure(column=0, row=y, sticky='WE') 589 self.gridcells[0, y] = cell 590 cell.__x = 0 591 cell.__y = y 592 cell.bind("<ButtonPress-1>", self.selectrow) 593 cell.bind("<B1-Motion>", self.extendrow) 594 cell.bind("<ButtonRelease-1>", self.extendrow) 595 cell.bind("<Shift-Button-1>", self.extendrow) 596 # Create the real cells 597 for x in range(1, columns+1): 598 for y in range(1, rows+1): 599 cell = Tk.Label(self.cellgrid, relief='sunken', 600 bg='white', fg='black') 601 cell.grid_configure(column=x, row=y, sticky='NSWE') 602 self.gridcells[x, y] = cell 603 cell.__x = x 604 cell.__y = y 605 # Bind mouse events 606 cell.bind("<ButtonPress-1>", self.press) 607 cell.bind("<B1-Motion>", self.motion) 608 cell.bind("<ButtonRelease-1>", self.release) 609 cell.bind("<Shift-Button-1>", self.release) 610 611 def selectall(self, event): 612 self.setcurrent(1, 1) 613 self.setcorner(sys.maxsize, sys.maxsize) 614 615 def selectcolumn(self, event): 616 x, y = self.whichxy(event) 617 self.setcurrent(x, 1) 618 self.setcorner(x, sys.maxsize) 619 620 def extendcolumn(self, event): 621 x, y = self.whichxy(event) 622 if x > 0: 623 self.setcurrent(self.currentxy[0], 1) 624 self.setcorner(x, sys.maxsize) 625 626 def selectrow(self, event): 627 x, y = self.whichxy(event) 628 self.setcurrent(1, y) 629 self.setcorner(sys.maxsize, y) 630 631 def extendrow(self, event): 632 x, y = self.whichxy(event) 633 if y > 0: 634 self.setcurrent(1, self.currentxy[1]) 635 self.setcorner(sys.maxsize, y) 636 637 def press(self, event): 638 x, y = self.whichxy(event) 639 if x > 0 and y > 0: 640 self.setcurrent(x, y) 641 642 def motion(self, event): 643 x, y = self.whichxy(event) 644 if x > 0 and y > 0: 645 self.setcorner(x, y) 646 647 release = motion 648 649 def whichxy(self, event): 650 w = self.cellgrid.winfo_containing(event.x_root, event.y_root) 651 if w is not None and isinstance(w, Tk.Label): 652 try: 653 return w.__x, w.__y 654 except AttributeError: 655 pass 656 return 0, 0 657 658 def save(self): 659 self.sheet.save(self.filename) 660 661 def setcurrent(self, x, y): 662 "Make (x, y) the current cell." 663 if self.currentxy is not None: 664 self.change_cell() 665 self.clearfocus() 666 self.beacon['text'] = cellname(x, y) 667 self.load_entry(x, y) 668 self.entry.focus_set() 669 self.currentxy = x, y 670 self.cornerxy = None 671 gridcell = self.gridcells.get(self.currentxy) 672 if gridcell is not None: 673 gridcell['bg'] = 'yellow' 674 675 def setcorner(self, x, y): 676 if self.currentxy is None or self.currentxy == (x, y): 677 self.setcurrent(x, y) 678 return 679 self.clearfocus() 680 self.cornerxy = x, y 681 x1, y1 = self.currentxy 682 x2, y2 = self.cornerxy or self.currentxy 683 if x1 > x2: 684 x1, x2 = x2, x1 685 if y1 > y2: 686 y1, y2 = y2, y1 687 for (x, y), cell in self.gridcells.items(): 688 if x1 <= x <= x2 and y1 <= y <= y2: 689 cell['bg'] = 'lightBlue' 690 gridcell = self.gridcells.get(self.currentxy) 691 if gridcell is not None: 692 gridcell['bg'] = 'yellow' 693 self.setbeacon(x1, y1, x2, y2) 694 695 def setbeacon(self, x1, y1, x2, y2): 696 if x1 == y1 == 1 and x2 == y2 == sys.maxsize: 697 name = ":" 698 elif (x1, x2) == (1, sys.maxsize): 699 if y1 == y2: 700 name = "%d" % y1 701 else: 702 name = "%d:%d" % (y1, y2) 703 elif (y1, y2) == (1, sys.maxsize): 704 if x1 == x2: 705 name = "%s" % colnum2name(x1) 706 else: 707 name = "%s:%s" % (colnum2name(x1), colnum2name(x2)) 708 else: 709 name1 = cellname(*self.currentxy) 710 name2 = cellname(*self.cornerxy) 711 name = "%s:%s" % (name1, name2) 712 self.beacon['text'] = name 713 714 715 def clearfocus(self): 716 if self.currentxy is not None: 717 x1, y1 = self.currentxy 718 x2, y2 = self.cornerxy or self.currentxy 719 if x1 > x2: 720 x1, x2 = x2, x1 721 if y1 > y2: 722 y1, y2 = y2, y1 723 for (x, y), cell in self.gridcells.items(): 724 if x1 <= x <= x2 and y1 <= y <= y2: 725 cell['bg'] = 'white' 726 727 def return_event(self, event): 728 "Callback for the Return key." 729 self.change_cell() 730 x, y = self.currentxy 731 self.setcurrent(x, y+1) 732 return "break" 733 734 def shift_return_event(self, event): 735 "Callback for the Return key with Shift modifier." 736 self.change_cell() 737 x, y = self.currentxy 738 self.setcurrent(x, max(1, y-1)) 739 return "break" 740 741 def tab_event(self, event): 742 "Callback for the Tab key." 743 self.change_cell() 744 x, y = self.currentxy 745 self.setcurrent(x+1, y) 746 return "break" 747 748 def shift_tab_event(self, event): 749 "Callback for the Tab key with Shift modifier." 750 self.change_cell() 751 x, y = self.currentxy 752 self.setcurrent(max(1, x-1), y) 753 return "break" 754 755 def change_cell(self): 756 "Set the current cell from the entry widget." 757 x, y = self.currentxy 758 text = self.entry.get() 759 cell = None 760 if text.startswith('='): 761 cell = FormulaCell(text[1:]) 762 else: 763 for cls in int, float, complex: 764 try: 765 value = cls(text) 766 except (TypeError, ValueError): 767 continue 768 else: 769 cell = NumericCell(value) 770 break 771 if cell is None and text: 772 cell = StringCell(text) 773 if cell is None: 774 self.sheet.clearcell(x, y) 775 else: 776 self.sheet.setcell(x, y, cell) 777 self.sync() 778 779 def sync(self): 780 "Fill the GUI cells from the sheet cells." 781 self.sheet.recalc() 782 for (x, y), gridcell in self.gridcells.items(): 783 if x == 0 or y == 0: 784 continue 785 cell = self.sheet.getcell(x, y) 786 if cell is None: 787 gridcell['text'] = "" 788 else: 789 if hasattr(cell, 'format'): 790 text, alignment = cell.format() 791 else: 792 text, alignment = str(cell), LEFT 793 gridcell['text'] = text 794 gridcell['anchor'] = align2anchor[alignment] 795 796 797 def test_basic(): 798 "Basic non-gui self-test." 799 a = Sheet() 800 for x in range(1, 11): 801 for y in range(1, 11): 802 if x == 1: 803 cell = NumericCell(y) 804 elif y == 1: 805 cell = NumericCell(x) 806 else: 807 c1 = cellname(x, 1) 808 c2 = cellname(1, y) 809 formula = "%s*%s" % (c1, c2) 810 cell = FormulaCell(formula) 811 a.setcell(x, y, cell) 812 ## if os.path.isfile("sheet1.xml"): 813 ## print "Loading from sheet1.xml" 814 ## a.load("sheet1.xml") 815 a.display() 816 a.save("sheet1.xml") 817 818 def test_gui(): 819 "GUI test." 820 if sys.argv[1:]: 821 filename = sys.argv[1] 822 else: 823 filename = "sheet1.xml" 824 g = SheetGUI(filename) 825 g.root.mainloop() 826 827 if __name__ == '__main__': 828 #test_basic() 829 test_gui() 830
