question:""" Browse a document with a wxPython GUI to extract tables ------------------------------------------------------------------------------- License: GNU GPL V3 (c) 2018 Jorj X. McKie Usage ----- python wx-extract.py Notes ----- Uses the ParseTab.py file which is found in the current directory. Description ----------- A file selection dialog is displayed to pick a document. Then, the document's first page is displayed. The controls in the dialog allow the following: * Browse forward and backward. * Jump to a specific page. * Paint a rectangle on a page using the "New Rect" button. The selection can be fine-tuned by using the spin controls. Moving the rectangle around with the mouse is now supported as well. * If pressing the "New Rect" button again or if leaving the page, the existing rectangle and columns will be removed. * After a rectangle has been painted, the "New Col" button allows to paint columns into it. The columns are shown as vertical lines inside the rectangle, and changes can be undone by selecting a column and then changing its coordinates. A column is deleted by entering "0" or by changing its value to something else outside of the rectangle's left/right borders. * After a column is painted, rectangles can be changed with the controls. Columns will not be affected by this, however, they will be deleted if leaving the rectangle area. In contrast, if a rectangle is moved with the mouse (hold down the left key) columns will be moved along with it. * Any time after a rectangle has been painted, its text can be parsed by pressing the "Get Table" button. The current script just prints the table to STDOUT if doing this. Columns can also be added or deleted while repeatedly pressing this button to evaluate any differences. Dependencies ------------ PyMuPDF v1.12.0, wxPython phoenix """ from __future__ import print_function import fitz import wx import os from ParseTab import ParseTab try: from PageFormat import FindFit except: def FindFit(*args): return "not implemented" try: from icons import ico_pdf show_icon = True except: show_icon = False def getint(v): import types # extract digits from a string to form an integer try: return int(v) except ValueError: pass if not isinstance(v, types.StringTypes): return 0 a = "0" for d in v: if d in "0123456789": a += d return int(a) # start the wx application app = None app = wx.App() cursor_hand = wx.Cursor(wx.CURSOR_HAND) cursor_cross = wx.Cursor(wx.CURSOR_CROSS) cursor_vert = wx.Cursor(wx.CURSOR_SIZENS) cursor_norm = wx.Cursor(wx.CURSOR_DEFAULT) bmp_from_buffer = wx.Bitmap.FromBuffer # some abbreviations to get rid of those long pesky names ... defPos = wx.DefaultPosition defSiz = wx.DefaultSize khaki = wx.Colour(240, 230, 140) # ============================================================================== # Define our dialog as a subclass of wx.Dialog. # Only special thing is, that we are being invoked with a filename ... # ============================================================================== class PDFdisplay(wx.Dialog): def __init__(self, parent, filename): wx.Dialog.__init__( self, parent, id=wx.ID_ANY, title="Parse Tables in ", pos=defPos, size=defSiz, style=wx.CAPTION | wx.CLOSE_BOX | wx.DEFAULT_DIALOG_STYLE, ) # ====================================================================== # display an icon top left of dialog, append filename to title # ====================================================================== if show_icon: self.SetIcon(ico_pdf.img.GetIcon()) # set a screen icon self.SetBackgroundColour(khaki) self.SetTitle(self.Title + filename) self.set_rectangle = False # ====================================================================== # open the document with MuPDF when dialog gets created # ====================================================================== self.doc = fitz.Document(filename) if self.doc.needs_pass: self.decrypt_doc() if self.doc.is_encrypted: self.Destroy() return # ====================================================================== # forward button # ====================================================================== self.BtnNext = wx.Button( self, wx.ID_ANY, "Forward", defPos, defSiz, wx.BU_EXACTFIT ) # ====================================================================== # backward button # ====================================================================== self.BtnPrev = wx.Button( self, wx.ID_ANY, "Backward", defPos, defSiz, wx.BU_EXACTFIT ) # ====================================================================== # text field for entering a target page. wx.TE_PROCESS_ENTER is # required to get data entry fired as events. # ====================================================================== self.TextToPage = wx.TextCtrl( self, wx.ID_ANY, "1", defPos, wx.Size(40, -1), wx.TE_PROCESS_ENTER | wx.TE_RIGHT, ) # ====================================================================== # displays total pages # ====================================================================== self.statPageMax = wx.StaticText( self, wx.ID_ANY, "of " + str(self.doc.page_count) + " pages.", defPos, defSiz, 0, ) # ====================================================================== # displays page format # ====================================================================== self.paperform = wx.StaticText(self, wx.ID_ANY, "", defPos, defSiz, 0) # ====================================================================== # activate rectangle drawing # ====================================================================== self.BtnRect = wx.Button( self, wx.ID_ANY, "New Rect", defPos, defSiz, wx.BU_EXACTFIT ) # ====================================================================== # "Left" literal # ====================================================================== self.statLeft = wx.StaticText( self, wx.ID_ANY, "Left:", defPos, wx.Size(50, -1), 0 ) # ====================================================================== # modify rectangle left # ====================================================================== self.CtrlLeft = wx.SpinCtrl( self, wx.ID_ANY, "0", defPos, wx.Size(50, -1), wx.SP_ARROW_KEYS | wx.TE_PROCESS_ENTER, 0, 999, 0, ) # ====================================================================== # "Top" literal # ====================================================================== self.statTop = wx.StaticText( self, wx.ID_ANY, "Top:", defPos, wx.Size(50, -1), 0 ) # ====================================================================== # modify rectangle top # ====================================================================== self.CtrlTop = wx.SpinCtrl( self, wx.ID_ANY, "0", defPos, wx.Size(50, -1), wx.SP_ARROW_KEYS | wx.TE_PROCESS_ENTER, 0, 999, 0, ) # ====================================================================== # "Height" literal # ====================================================================== self.statHeight = wx.StaticText( self, wx.ID_ANY, "Height:", defPos, wx.Size(50, -1), 0 ) # ====================================================================== # modify rectangle Height # ====================================================================== self.CtrlHeight = wx.SpinCtrl( self, wx.ID_ANY, "0", defPos, wx.Size(50, -1), wx.SP_ARROW_KEYS | wx.TE_PROCESS_ENTER, 0, 999, 0, ) # ====================================================================== # "Width" literal # ====================================================================== self.statWidth = wx.StaticText( self, wx.ID_ANY, "Width:", defPos, wx.Size(50, -1), 0 ) # ====================================================================== # modify rectangle Width # ====================================================================== self.CtrlWidth = wx.SpinCtrl( self, wx.ID_ANY, "0", defPos, wx.Size(50, -1), wx.SP_ARROW_KEYS | wx.TE_PROCESS_ENTER, 0, 999, 0, ) # ====================================================================== # parse table within rectangle # ====================================================================== self.BtnMatrix = wx.Button( self, wx.ID_ANY, "Get Table", defPos, defSiz, wx.BU_EXACTFIT ) # ====================================================================== # column controls # ====================================================================== self.BtnNewCol = wx.Button( self, wx.ID_ANY, "New Col", defPos, defSiz, wx.BU_EXACTFIT ) self.col_coords = {} self.ColList = wx.Choice(self, wx.ID_ANY, defPos, wx.Size(50, -1)) self.CtrlCols = wx.SpinCtrl( self, wx.ID_ANY, "0", defPos, wx.Size(50, -1), wx.SP_ARROW_KEYS | wx.TE_PROCESS_ENTER, 0, 999, 0, ) # ====================================================================== # image of document page # ====================================================================== self.bitmap = self.pdf_show(1) self.PDFimage = wx.StaticBitmap( self, wx.ID_ANY, self.bitmap, defPos, self.bitmap.Size, wx.NO_BORDER ) # ====================================================================== # horizonzal lines # ====================================================================== l1 = wx.StaticLine(self, wx.ID_ANY, defPos, defSiz, wx.LI_HORIZONTAL) l2 = wx.StaticLine(self, wx.ID_ANY, defPos, defSiz, wx.LI_HORIZONTAL) l3 = wx.StaticLine(self, wx.ID_ANY, defPos, defSiz, wx.LI_HORIZONTAL) """ ======================================================================= Overall Dialog Structure: ------------------------- szr10 (main sizer for the whole dialog - vertical orientation) +-> szr20 (sizer for buttons etc. - horizontal orientation) +-> button forward +-> button backward +-> field for page number to jump to +-> field displaying total pages +-> fields for controlling the rectangle +-> szr30 (sizer for columns) +-> button "New Column" +-> fields for controlling a column +-> button to extract selected table +-> PDF image area ======================================================================= """ # ====================================================================== # sizers # ====================================================================== szr10 = wx.BoxSizer(wx.VERTICAL) # main sizer szr20 = wx.BoxSizer(wx.HORIZONTAL) # paging controls szr30 = wx.BoxSizer(wx.HORIZONTAL) # rect & col controls & image szr40 = wx.BoxSizer(wx.VERTICAL) # rect & col controls # szr20: navigation controls szr20.Add(self.BtnNext, 0, wx.ALL, 5) szr20.Add(self.BtnPrev, 0, wx.ALL, 5) szr20.Add(self.TextToPage, 0, wx.ALIGN_CENTER_VERTICAL | wx.ALL, 5) szr20.Add(self.statPageMax, 0, wx.ALIGN_CENTER_VERTICAL | wx.ALL, 5) szr20.Add(self.paperform, 0, wx.ALIGN_CENTER_VERTICAL | wx.ALL, 5) szr20.Fit(self) # szr40: rectangle & column controls szr40.Add(self.BtnRect, 0, wx.ALL, 5) szr40.Add(self.statLeft, 0, wx.ALL, 5) szr40.Add(self.CtrlLeft, 0, wx.ALL, 5) szr40.Add(self.statTop, 0, wx.ALL, 5) szr40.Add(self.CtrlTop, 0, wx.ALL, 5) szr40.Add(self.statHeight, 0, wx.ALL, 5) szr40.Add(self.CtrlHeight, 0, wx.ALL, 5) szr40.Add(self.statWidth, 0, wx.ALL, 5) szr40.Add(self.CtrlWidth, 0, wx.ALL, 5) szr40.Add(l2, 0, wx.EXPAND | wx.ALL, 5) szr40.Add(self.BtnNewCol, 0, wx.ALL, 5) szr40.Add(self.ColList, 0, wx.ALL, 5) szr40.Add(self.CtrlCols, 0, wx.ALL, 5) szr40.Add(l3, 0, wx.EXPAND | wx.ALL, 5) szr40.Add(self.BtnMatrix, 0, wx.ALL, 5) szr40.Fit(self) # szr30: document image szr30.Add(szr40, 0, wx.EXPAND, 5) szr30.Add(self.PDFimage, 0, wx.ALL, 5) szr30.Fit(self) # szr10: main sizer szr10.Add(szr20, 0, wx.EXPAND, 5) szr10.Add(l1, 0, wx.EXPAND | wx.ALL, 5) szr10.Add(szr30, 0, wx.EXPAND, 5) szr10.Fit(self) self.SetSizer(szr10) self.Layout() self.Centre(wx.BOTH) # ====================================================================== # Bind event handlers # ====================================================================== self.BtnNewCol.Bind(wx.EVT_BUTTON, self.AddCol) self.BtnNext.Bind(wx.EVT_BUTTON, self.NextPage) self.BtnPrev.Bind(wx.EVT_BUTTON, self.PreviousPage) self.TextToPage.Bind(wx.EVT_TEXT_ENTER, self.GotoPage) self.BtnRect.Bind(wx.EVT_BUTTON, self.ActivateRect) self.BtnMatrix.Bind(wx.EVT_BUTTON, self.GetMatrix) self.CtrlTop.Bind(wx.EVT_SPINCTRL, self.resize_rect) self.CtrlHeight.Bind(wx.EVT_SPINCTRL, self.resize_rect) self.CtrlLeft.Bind(wx.EVT_SPINCTRL, self.resize_rect) self.CtrlWidth.Bind(wx.EVT_SPINCTRL, self.resize_rect) self.CtrlCols.Bind(wx.EVT_SPINCTRL, self.UpdateCol) self.ColList.Bind(wx.EVT_CHOICE, self.OnColSelect) self.PDFimage.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown) self.PDFimage.Bind(wx.EVT_LEFT_UP, self.OnLeftUp) self.PDFimage.Bind(wx.EVT_MOTION, self.move_mouse) self.PDFimage.Bind(wx.EVT_MOUSEWHEEL, self.OnMouseWheel) self.disable_fields() def __del__(self): pass # ============================================================================== # Event handlers and other subroutines # ============================================================================== def cursor_in_rect(self, pos): # check whether cursor is in rectangle if self.rect_h <= 0 or self.rect_w <= 0: # does a rect exist? return False if any( ( pos.x < self.rect_x, pos.x > self.rect_x + self.rect_w, pos.y < self.rect_y, pos.y > self.rect_y + self.rect_h, ) ): return False return True def rect_in_img(self, x, y, w, h): # check whether rectangle is inside page image width = self.PDFimage.Size[0] height = self.PDFimage.Size[1] if not (x >= 0 and y >= 0 and x + w <= width and y + h <= height): return False return True def disable_fields(self): # reset controls & buttons (e.g. b/o page scrolling) self.CtrlHeight.Disable() self.CtrlTop.Disable() self.CtrlLeft.Disable() self.CtrlWidth.Disable() self.ColList.Disable() self.CtrlCols.Disable() self.BtnMatrix.Disable() self.BtnNewCol.Disable() self.CtrlCols.Value = 0 self.CtrlTop.Value = 0 self.CtrlLeft.Value = 0 self.CtrlHeight.Value = 0 self.CtrlWidth.Value = 0 self.set_rectangle = False self.col_selected = None self.adding_column = False self.dragging_rect = False self.col_coords = {} self.rect_x = 0 self.rect_y = 0 self.rect_w = 0 self.rect_h = 0 self.ColList.Clear() self.PDFimage.SetCursor(cursor_norm) return def enable_fields(self): # enable fields (after rectangle was made) self.BtnMatrix.Enable() self.CtrlHeight.Enable() self.CtrlTop.Enable() self.CtrlLeft.Enable() self.CtrlWidth.Enable() return def upd_collist(self): # update list of columns self.ColList.Clear() # clear drop down list self.CtrlCols.Disable() # disable spin control vlist = self.col_coords.values() if not vlist: # no columns left? self.ColList.Disable() return self.ColList.Enable() # else recreate column dict self.col_coords = {} vlist.sort() i = 1 for v in vlist: if v > self.rect_x and v < self.rect_x + self.rect_w: cname = "Col" + str(i) self.col_coords[cname] = v self.ColList.Append(cname) i += 1 def resize_rect(self, evt): # change rectangle shape via spin controls if self.CtrlWidth.Value < 5: self.CtrlWidth.Value = 5 if self.CtrlHeight.Value < 5: self.CtrlHeight.Value = 5 x = self.CtrlLeft.Value y = self.CtrlTop.Value w = self.CtrlWidth.Value h = self.CtrlHeight.Value # move no rectangle part outside page image if not self.rect_in_img(x, y, w, h): self.CtrlLeft.Value = self.rect_x # reset invalid coordinates self.CtrlTop.Value = self.rect_y # ... self.CtrlWidth.Value = self.rect_w # ... self.CtrlHeight.Value = self.rect_h # ... return self.rect_x = x self.rect_y = y self.rect_h = h self.rect_w = w self.DrawRect(x, y, w, h) # redraw rectangle self.ColList.Clear() # re-adjust column controls self.ColList.Disable() self.CtrlCols.Disable() self.CtrlCols.Value = 0 self.col_selected = None self.upd_collist() for k in self.col_coords: # also redraw all columns self.DrawColumn(self.col_coords[k], "RED") def move_rect(self, x, y, w, h): # move rectangle around with mouse if not self.rect_in_img(x, y, w, h): return # no rect part outside image dx = x - self.rect_x # remember horizontal movement delta self.rect_x = x self.rect_y = y self.CtrlLeft.Value = x self.CtrlTop.Value = y self.DrawRect(x, y, w, h) # redraw rectangle self.CtrlCols.Value = 0 # set column info to self.ColList.Selection = -1 # none selected self.col_selected = None for k in self.col_coords: # also redraw all columns after self.col_coords[k] += dx # repositioning them self.DrawColumn(self.col_coords[k], "RED") def OnMouseWheel(self, evt): # process wheel as paging operations d = evt.GetWheelRotation() # int indicating direction if d < 0: self.NextPage(evt) elif d > 0: self.PreviousPage(evt) return def OnColSelect(self, evt): # a column from the drop down box was selected self.adding_column = False col = evt.GetString() # selected item self.CtrlCols.Value = self.col_coords[col] # get its coord self.CtrlCols.Enable() # enable spin control self.col_selected = col # store selected string for k in self.col_coords: if k == col: self.DrawColumn(self.col_coords[k], "BLUE") else: self.DrawColumn(self.col_coords[k], "RED") def AddCol(self, evt): # insert new column into rectangle # change cursor to up-down image self.adding_column = True # store state: adding column self.set_rectangle = False self.ColList.Enable() # enable drop-down list self.CtrlCols.Disable() # disable spin control self.col_selected = None # state change: no column selected return def OnLeftDown(self, evt): # left mouse button pressed down pos = evt.GetPosition() if self.set_rectangle: # about to make rectangle, self.rect_x = pos.x self.rect_y = pos.y return elif self.adding_column: # about to make a column # horizontal coord must be within rectangle if not self.cursor_in_rect(pos): return # store new column info n = self.ColList.Count + 1 col_name = "Col" + str(n) self.col_coords[col_name] = pos.x self.ColList.Append("Col" + str(n)) self.CtrlCols.Value = pos.x self.adding_column = False # reset state: not adding column self.DrawColumn(pos.x, "RED") # draw the column return # potentially a rectangle drag request if self.cursor_in_rect(pos): self.dragging_rect = True self.dragstart_x = pos.x - self.rect_x # delta cursor to left self.dragstart_y = pos.y - self.rect_y # delta cursor to top return def OnLeftUp(self, evt): self.dragging_rect = False # reset dragging information self.dragstart_x = 0 self.dragstart_y = 0 if not self.set_rectangle: # out if not making a rectangle return self.PDFimage.SetCursor(cursor_norm) # cursor default again pos = evt.GetPosition() self.rect_w = abs(pos.x - self.rect_x) # get width self.rect_h = abs(pos.y - self.rect_y) # get height if self.rect_x > pos.x: self.rect_x = pos.x # recover from not painting ... if self.rect_y > pos.y: # from top-left self.rect_y = pos.y # to bottom-right self.enable_fields() # enable fields self.set_rectangle = False # reset state: no more making rect self.BtnNewCol.Enable() # making columns now possible return def move_mouse(self, evt): # handle mouse movements pos = evt.GetPosition() if not (self.adding_column or self.set_rectangle): if self.cursor_in_rect(pos): # only adjust cursor self.PDFimage.SetCursor(cursor_hand) else: self.PDFimage.SetCursor(cursor_norm) if self.adding_column: if self.cursor_in_rect(pos): self.PDFimage.SetCursor(cursor_vert) else: self.PDFimage.SetCursor(cursor_norm) return if self.set_rectangle and evt.LeftIsDown(): # if making a rectangle w = abs(pos.x - self.rect_x) h = abs(pos.y - self.rect_y) x = self.rect_x # adjust coordinates ... if pos.x < x: # if not ... x = pos.x # moving from ... y = self.rect_y # top-left to ... if pos.y < y: # bottom-right ... y = pos.y # direction self.rect_w = w self.rect_h = h self.CtrlHeight.Value = h # update ... self.CtrlWidth.Value = w # ... spin ... self.CtrlLeft.Value = x # ... controls self.CtrlTop.Value = y self.DrawRect(x, y, w, h) # draw rectangle return if not evt.LeftIsDown(): self.dragging_rect = False self.dragstart_x = 0 self.dragstart_y = 0 return if self.dragging_rect and evt.LeftIsDown(): new_x = pos.x - self.dragstart_x new_y = pos.y - self.dragstart_y self.move_rect(new_x, new_y, self.rect_w, self.rect_h) return return def UpdateCol(self, evt): # handle changes to spin control self.adding_column = False if not self.col_selected: # only if a column is selected return v = self.CtrlCols.Value # position of column x = self.rect_x # rectangle coord's y = self.rect_y w = self.rect_w h = self.rect_h self.col_coords[self.col_selected] = v # store col coord in dict if v <= x or v >= x + w: # if col coord outside rectangle self.resize_rect(evt) # delete the column self.ColList.SetFocus() # focus to next col selection return # and return self.DrawRect(x, y, w, h) # else redraw everything we have for k in self.col_coords: # redraw all columns if k == self.col_selected: c = "BLUE" else: c = "RED" self.DrawColumn(self.col_coords[k], c) def DrawColumn(self, x, c): # draw a vertical line dc = wx.ClientDC(self.PDFimage) # make a device control out of img dc.SetPen(wx.Pen(c)) # only draw inside the rectangle dc.DrawLine(x, self.rect_y, x, self.rect_y + self.rect_h) self.adding_column = False def DrawRect(self, x, y, w, h): # Draw a rectangle (red border, transparent interior) dc = wx.ClientDC(self.PDFimage) # make a device control out of img dc.SetPen(wx.Pen("RED")) dc.SetBrush(wx.Brush("RED", style=wx.BRUSHSTYLE_TRANSPARENT)) self.redraw_bitmap() dc.DrawRectangle(x, y, w, h) def GetMatrix(self, evt): # parse table contained in rectangle # currently, the table is just stored away as a matrix: # add functionality as desired x0 = self.rect_x y0 = self.rect_y x1 = x0 + self.rect_w y1 = y0 + self.rect_h cols = list(self.col_coords.values()) cols.sort() pg = getint(self.TextToPage.Value) - 1 self.parsed_table = ParseTab(self.doc[pg], [x0, y0, x1, y1], columns=cols) if self.parsed_table: r = len(self.parsed_table) c = len(self.parsed_table[0]) t = "nContents of (%s x %s)-table at [%s,%s] on page %s" print(t % (r, c, x0, y0, pg + 1)) for l in self.parsed_table: print(l) else: print("No text found in rectangle") def redraw_bitmap(self): w = self.bitmap.Size[0] h = self.bitmap.Size[1] x = y = 0 rect = wx.Rect(x, y, w, h) bm = self.bitmap.GetSubBitmap(rect) dc = wx.ClientDC(self.PDFimage) # make a device control out of img dc.DrawBitmap(bm, x, y) # refresh bitmap before draw return def ActivateRect(self, evt): # Start drawing a rectangle self.disable_fields() self.set_rectangle = True self.PDFimage.SetCursor(cursor_cross) def NextPage(self, event): # means: page forward page = getint(self.TextToPage.Value) + 1 # current page + 1 if page > self.doc.page_count: return page = min(page, self.doc.page_count) # cannot go beyond last page self.TextToPage.Value = str(page) # put target page# in screen self.bitmap = self.pdf_show(page) # get page image self.NeuesImage(page) # refresh the layout event.Skip() def PreviousPage(self, event): # means: page back page = getint(self.TextToPage.Value) - 1 # current page - 1 if page < 1: return page = max(page, 1) # cannot go before page 1 self.TextToPage.Value = str(page) # put target page# in screen self.NeuesImage(page) event.Skip() def GotoPage(self, event): # means: go to page number page = getint(self.TextToPage.Value) # get screen page number page = min(page, self.doc.page_count) # cannot go beyond last page page = max(page, 1) # cannot go before page 1 self.TextToPage.Value = str(page) # make sure it's on the screen self.NeuesImage(page) event.Skip() # ============================================================================== # Read / render a PDF page. Parameters are: pdf = document, page = page# # ============================================================================== def NeuesImage(self, page): self.disable_fields() self.bitmap = self.pdf_show(page) # read page image self.PDFimage.SetSize(self.bitmap.Size) # adjust screen to image size self.PDFimage.SetBitmap(self.bitmap) # put it in screen return def pdf_show(self, pg_nr): # get Pixmap of a page p = self.doc[pg_nr - 1] pix = p.get_pixmap(alpha=0) bitmap = bmp_from_buffer(pix.width, pix.height, pix.samples) self.paperform.Label = "Format: " + FindFit(pix.w, pix.h) return bitmap def decrypt_doc(self): # let user enter document password pw = None dlg = wx.TextEntryDialog( self, "Please enter password below:", "Document needs password to open", "", style=wx.TextEntryDialogStyle | wx.TE_PASSWORD, ) while pw is None: rc = dlg.ShowModal() if rc == wx.ID_OK: pw = str(dlg.GetValue().encode("utf-8")) self.doc.authenticate(pw) else: return if self.doc.is_encrypted: pw = None dlg.SetTitle("Wrong password, enter correct one or cancel") return # ============================================================================== # main program # ============================================================================== # ============================================================================== # Show a FileSelect dialog to choose a file # ============================================================================== # Wildcard: offer all supported filetypes wild = "supported files|*.pdf;*.xps;*.oxps;*.epub;*.cbz" # ============================================================================== # define the file selection dialog # ============================================================================== dlg = wx.FileDialog( None, message="Choose a document", defaultDir=os.getcwd(), defaultFile="", wildcard=wild, style=wx.FD_OPEN | wx.FD_CHANGE_DIR, ) # ============================================================================== # gimmick: provide an icon # ============================================================================== if show_icon: dlg.SetIcon(ico_pdf.img.GetIcon()) # set a screen icon # ============================================================================== # now display and ask for return code in one go # ============================================================================== # We got a file only when one was selected and OK pressed if dlg.ShowModal() == wx.ID_OK: # This returns a Python list of selected files (we only have one though) filename = dlg.GetPaths()[0] else: filename = None # destroy this dialog dlg.Destroy() # ============================================================================== # only continue if we have a filename # ============================================================================== if filename: # create the dialog dlg = PDFdisplay(None, filename) # show it - this will only return for final housekeeping rc = dlg.ShowModal() app = None

question:possiamo aggiungere qualcosa che mostra le effettiver coordinate delle tabelle?

question:risultato Coordinate del rettangolo selezionato: (27, 347), (498, 393) Coordinate delle colonne: [59, 95, 226, 277, 331, 412] come trasformarlo x0,y0,x1,y1

question:e come utilizzarli per fare l'estrazione della tabella