#!/usr/bin/python
# -*- coding: utf-8 -*-
"""
@created: 2015-10-23 13:40:00
@author: Jorj X. McKie
Let the user select a Python file and then scroll through it.
Dependencies:
PyMuPDF, wxPython 3.x
License:
GNU GPL 3.x
Changes in PyMuPDF 1.8.0
------------------------
- display a fancy icon on the dialogs, defined as inline code in base64 format
- display PDF pages with a zoom factor of 120%
- dynamically resize dialog to reflect each page's image size / orientation
- minor cosmetic changes
- adjust the scaling matrix in function pdf_show as you like it.
"""
import fitz # bindings for MuPDF
import wx
import os
from wx.lib.embeddedimage import PyEmbeddedImage
#==============================================================================
# The following data has been created by the wxPython tool img2py.py
# It contains SumatraPDF's icon (only for demonstration purposes) as a base64
# version (like PyMuPDF, SumatraPDF software is licensed under GNU GPL 3.x).
#==============================================================================
img = PyEmbeddedImage(
"iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAABHNCSVQICAgIfAhkiAAABjpJ"
"REFUWIXtlntonlcdxz/nPM/z3pM3C4ldU9uMtbPZVjpLCrIsrDa0qZeiS6aD1srQIXSoqCB0"
"08EYAy9s4vAP6VS8UJ0M/xhK/UMpk64QlMqUXta0SbbkTdOkzeXNm/f23M45/vFe8uZtItV/"
"ty88nMtzfuf7Pb/z+51z4AO83yH+TztZtRWA1dAHwOHDhwXA6dOnTZOdAXTjd6cCZPWzuru7"
"HxBC7AV2aq23Ka03e55u9zzdEoYiFoRKJOMh924N2drlm867VOmuVu3u6GbFFiLftUm++/Jr"
"/c8ppYpnz54t2/+FVADywIEDKdd1vxyG4VA+n++3bVsopSm7Gq+kgYDBj+fp6y2xd7fH7p0+"
"8Q8BIaAaytVv4Ien1OuO47wDeBsJkIcOHdrU1tb2o46OjiPz8/NMTk4SiUQplgxl1zD0ySxH"
"H8/ysUfLFZIA8CuEZrlKRtXRtbqqbEJba/hQNmdmgKX1BNhDQ0NP9fb2niwUCly9epWZmRk8"
"D4olydNPzfCt47OIBFAGs9JEcAe4Z0thazaXTu3bt89uFmANDw9/5+DBgy9MTEwwPj7O3Nwc"
"xaJD754lXv3JKLFWA0Uw+TsjWw+d7X4bEANs2dAvBwcHH9u/f/8L4+PjjI2NsbCwwMpKlKe/"
"kuE3p64QixpMCUxzbP+P6Ej7KSFEFFjjAaunp+fXU1NTTExMkM1mWVmJ8NyzVzhybBbcyiAh"
"AVPJp3obVjt0tSpANOaYqdopSKWCpJQyIoSwagJkX1/fF5LJZGp0dJRcLofnRzh6ZIojx2Yp"
"LUF2qZIWRkE8Bu0fBkowOw0mrHKEsPlukHHQBZi5UT0cqsTJBLSlIJUI48YYx7KsVQHpdPoz"
"ExMTFAoFwGJTZ5kTz4wB8M1nvkGxBCBRGpYWFwlKv+P3v+ziq88/QTIe4Ic2llT8698X+faT"
"b+K0fIo/v/URIhEolSVCRrkx/nNG3lggZuuIMcYJgkDWBRQKhfuFEEgpKRYlr/z4H6veMy6J"
"uE3EOkPfw1v427kerl77BK/94TztaZel7DJDB99i9L1HaUvv4nsnr/Hisy6phE9m8jI/fX6K"
"YtEhHctBGRxL2UIIy7btugAhpWwRQqCUYPv2FXY/lMcEIBzITGcw2uHebeMMH57k5C8SBEGB"
"xUWPzHSGuZtZtn9pGhWe57d/3IkxNksL82QySSYn3+W+3mnIUknbEIQU0hgjlVKi7gGlVADg"
"+5LPf25qTdReunQZowX5Zc33X9ZcGb1ANutx/IslfnbqAqWSh5SQuX6TCxc83PIS12dyXLy4"
"glvK8uorkIzCscepHFqAEEJqresCjFJqFrjH9yUDA3OVE6yKGzMZAGZn4e/nAyDD6dchlYCF"
"+YpY24blpRzzt3IALMzDzbksAMe/C91b4NhRwIUwRAkhjDGmfoMZrfVlYwStrT7pthCzzql2"
"9AkwuhLRnx6GYnnt/1raCVbTMxYBswiTI6uHlxfKQGutHcfRNQHadd2zYLFjx8rtzGtYqhN5"
"a7sTcYhEq6tp6NfVhvFXfxRd2wOU53mmtgW6paXlL/l8gc5Of0PuIFg7u2nYpie/DmPvVeqP"
"HYJy1Tt+kw1ANhcpGmPCNR7QWruFQvGvicTtvu/dA7segEceph5EaGhLw/33wd6PQqBg2xY4"
"8TV440+weRPs2gmfHaRyUzYKWIkWpZQ+ENaDcGRkxH/wwT2/0toabBxsPPjn29VGCKa6MhPA"
"I33wzqWKmPpbxwdzC156EV6yK+SmaVev34ovG2M8pZRqvAtUV1fHm1NTY3PA3WtElGoj1k5k"
"QmCD67huo7kNl6+13KJyu4SNAjRQ7Ogo/WB52TmRyznK8yTlsu36PmEYWqFbtHwVorWW2vNl"
"INAIMHUPVGeREstGW7aNFY+oaMRSdsxR0ZiloxFbCSFETmuda21t9ZvfhM7AwEC7MWY70GOM"
"iRljTMWRKCmlMsYoIYTRWmsp5Trrq3rAGGGMkUIICdhCCAuwtdZaCDGvlHr73LlzN5sFSCDa"
"39+fsiwrCcSklEYppS3L0lJKE4ahBnAcZ0PyGpRSQmstbNuWYRjKaqm11sVoNFo6c+ZMYb1X"
"ce0FLGh4atcW1lQ21xshNihr4VorP8D7HP8Bc8sM8DYGFFQAAAAASUVORK5CYII=")
# first abbreviations to get rid of those long pesky names ...
defPos = wx.DefaultPosition
defSiz = wx.DefaultSize
#==============================================================================
# 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 = u"PDF Display with PyMuPDF: ",
pos = defPos, size = defSiz,
style = wx.CAPTION|wx.CLOSE_BOX|wx.DEFAULT_DIALOG_STYLE|
wx.DIALOG_NO_PARENT|wx.MAXIMIZE_BOX|wx.MINIMIZE_BOX|
wx.RESIZE_BORDER)
#======================================================================
# display an icon top left of dialog, append filename to title
#======================================================================
self.SetIcon(img.GetIcon())
self.SetTitle(self.Title + filename)
#======================================================================
# open the document with MuPDF when dialog gets created
#======================================================================
self.doc = fitz.Document(filename)
#======================================================================
# define zooming matrix for displaying PDF page images
# we increase images by 20%, so take 1.2 as scale factors
#======================================================================
self.matrix = fitz.Matrix(1, 1).preScale(1.2, 1.2)
'''
=======================================================================
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
+-> PDF image area
=======================================================================
'''
#======================================================================
# the main sizer of the dialog
#======================================================================
self.szr10 = wx.BoxSizer(wx.VERTICAL)
#======================================================================
# this sizer will contain scrolling buttons, page numbers etc.
#======================================================================
szr20 = wx.BoxSizer(wx.HORIZONTAL)
#======================================================================
# forward button
#======================================================================
self.ButtonNext = wx.Button(self, wx.ID_ANY, u"forw",
defPos, defSiz, 0)
szr20.Add(self.ButtonNext, 0, wx.ALL, 5)
#======================================================================
# backward button
#======================================================================
self.ButtonPrevious = wx.Button(self, wx.ID_ANY, u"back",
defPos, defSiz, 0)
szr20.Add(self.ButtonPrevious, 0, wx.ALL, 5)
#======================================================================
# 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, u"1", defPos, defSiz,
wx.TE_PROCESS_ENTER)
szr20.Add(self.TextToPage, 0, wx.ALL, 5)
#======================================================================
# displays total pages
#======================================================================
self.statPageMax = wx.StaticText(self, wx.ID_ANY,
str(self.doc.pageCount), defPos, defSiz, 0)
szr20.Add(self.statPageMax, 0, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 5)
#======================================================================
# sizer ready, represents top dialog line
#======================================================================
self.szr10.Add(szr20, 0, wx.EXPAND, 5)
#======================================================================
# define the area for page images and load page 1 for primary display
#======================================================================
self.PDFimage = wx.StaticBitmap(self, wx.ID_ANY, self.pdf_show(1),
defPos, defSiz, wx.NO_BORDER)
self.szr10.Add(self.PDFimage, 0, wx.ALL, 0)
#======================================================================
# main sizer now ready - request final size & layout adjustments
#======================================================================
self.szr10.Fit(self)
self.SetSizer(self.szr10)
self.Layout()
#======================================================================
# center dialog on screen
#======================================================================
self.Centre(wx.BOTH)
#======================================================================
# Bind buttons and fields to event handlers
#======================================================================
self.ButtonNext.Bind(wx.EVT_BUTTON, self.NextPage)
self.ButtonPrevious.Bind(wx.EVT_BUTTON, self.PreviousPage)
self.TextToPage.Bind(wx.EVT_TEXT_ENTER, self.GotoPage)
def __del__(self):
pass
#==============================================================================
# Button handlers
#==============================================================================
def NextPage(self, event): # means: page forward
page = int(self.TextToPage.Value) + 1 # current page + 1
page = min(page, self.doc.pageCount) # 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 = int(self.TextToPage.Value) - 1 # current page - 1
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 = int(self.TextToPage.Value) # get page# from screen
page = min(page, self.doc.pageCount) # 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.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
self.PDFimage.Refresh(True) # refresh the image
self.szr10.Fit(self)
self.Layout() # and the layout
return
def pdf_show(self, pg_nr):
page = self.doc.loadPage(int(pg_nr) - 1) # load the page & get Pixmap
pix = page.getPixmap(matrix = self.matrix,
colorspace = 'RGB')
data = str(pix.samples) # point to pixel area
data2 = "".join([data[4*i:4*i+3] for i in range(len(data)/4)])
bitmap = wx.BitmapFromBuffer(pix.width, pix.height, data2)
return bitmap
#==============================================================================
# main program
#==============================================================================
# start the wx application
app = wx.App()
#==============================================================================
# Show a FileSelect dialog to choose a file for display
#==============================================================================
# Wildcard: offer all supported filetypes for display
wild = "supported files|*.pdf;*.xps;*.oxps;*.epub"
#==============================================================================
# define the file selection dialog
#==============================================================================
dlg = wx.FileDialog(None, message = "Choose a file to display",
defaultDir = os.path.expanduser("~"),
defaultFile = "",
wildcard = wild, style=wx.OPEN|wx.CHANGE_DIR)
#==============================================================================
# give an icon before we display it
#==============================================================================
dlg.SetIcon(img.GetIcon())
#==============================================================================
# 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()
if filename:
if not os.path.exists(filename): # should not happen actually
filename = None
#==============================================================================
# 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
