Re: [orca-list] OCR Current Window

["B. Henry" <burt1iband gmail com>]

This is a very important function for some situations. I used NVDA's ocr add-on some when it first came out. 
What would be great is if one could use 
controls that one can see with the ocr. I have not tested this, so if this is already possible, congrats!
I'd forgotten about this, but I'd thought this would be a very good and inportant addition ever since testing 
NVDA, and hearing of a similar function in 
jfw as well. 
Thanks for sharing.



-- 
     B.H.
   Registerd Linux User 521886


  chrys87 wrote:
Mon, Jan 26, 2015 at 11:28:08PM +0100

> Hi Guys,
> i play a little arround with tesserwrap. i dont know if it really make sense
> but maybe someone need this.
> i wrote a little orca-cust for taking a screen shot of the current window
> and pass it through tesseract. just press
> orca + m
> orca will start reading the content of the window (maybe the image program
> or browser with pictures or an other not accessible content) and set it to
> the clipboard.
> You need tesseract tesserwrap, your tesseract-language-pack and orca >= 3.14
>
> hier is the cust script for those who are interested in:
>
> # Requiere: tesserwrap, tesseract, orca >=3.14
> # -*- coding: utf-8 -*-
>
> #Python
> import os
> from PIL import Image
> import locale
>
> #tesseract
> from tesserwrap import tesseract
>
> #GTK/GDK
> from gi.repository import Gtk, Gdk
>
> # Orca
> import orca.orca
> import orca.input_event
> import orca.settings
> import orca.keybindings
> import orca.speech
> import orca.braille
>
> #Settings-
> #this is need by arch for correct braille
> orca.settings.tty = 1
> #Settings+
>
> #Bind Function to key-
> myKeyBindings = orca.keybindings.KeyBindings()
>
> def DefineShortcut(pHandle,pShortcut):
>     myKeyBindings.add(orca.keybindings.KeyBinding(
>         pShortcut,
>         1 << orca.keybindings.MODIFIER_ORCA,
>         1 << orca.keybindings.MODIFIER_ORCA,
>         pHandle))
>     orca.settings.keyBindingsMap["default"] = myKeyBindings
> #Bind Function to key+
>
> #OCRPath-
> def ocr_path(path):
>     img = Image.open(path)
>     tr = tesseract("/usr/share")
>     new_string = tr.ocr_image(img)
>     return new_string
> #OCRPath+
>
> #Set to Clipboard
> def setTextToClipboard(text):
>     ClipboardObj = Gtk.Clipboard.get(Gdk.SELECTION_CLIPBOARD)
>     ClipboardObj.set_text(text, -1)
>
> #Display Message-
> #Speak or Braille
> def outputMessage(Message):
>     if (orca.settings.enableSpeech):
>         orca.speech.speak(Message)
>     if (orca.settings.enableBraille):
>         orca.braille.displayMessage(Message)
> #Display Message+
>
> #OCR Current Window-
> def ocrWindow(script, inputEvent=None):
>     os.popen('gnome-screenshot -w -f "/tmp/orca-currwindow.png"').read()
>     locale.setlocale(locale.LC_NUMERIC, 'C')
>     OCRText = ocr_path("/tmp/orca-currwindow.png")
>     setTextToClipboard(OCRText)
>     outputMessage(OCRText)
>     return True
> #OCR Current Window+
>
> # define OcrHandler-
> ocrWindowHandler = orca.input_event.InputEventHandler(
>     ocrWindow, "OCR Current window") #OCR the current window
> # define OcrHandler+
>
>
> DefineShortcut(ocrWindowHandler,"m"); #Shortcut Orca + m
>
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> Visit http://live.gnome.org/Orca for more information on Orca.
> The manual is at http://library.gnome.org/users/gnome-access-guide/nightly/ats-2.html
> The FAQ is at http://live.gnome.org/Orca/FrequentlyAskedQuestions
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