Draw on Pdf

CapitainDerya · 02-06-2015, 04:29 PM

I would like to draw shapes and write notes on Pdf Reader of Kindle Paperwhite. Have you got any idea to create such a native tool?I think it isn't so hard.Here is my solution:

Write a native app that is similar to "/usr/bin/xtestlab126".But It won't clear background when it opens.
Listen a specific gesture event of touch screen.After that event, run this drawing app.Note: we should run this drawing app anytime.

Can we put a "nop" bytecode to disable clearing background.Instead of writing new app, we can edit bytecodes of xtestlab126.I uploaded "xtestlab126". Maybe you could patch this app using IDA Pro

hawhill · 02-06-2015, 04:59 PM

So you don't want to save your drawing?

CapitainDerya · 02-06-2015, 05:01 PM

I think "pressing left-bottom and right-top" captures screen. How can i listen specific gesture events. We should create a app that will work in background. If it is hard, I will change name of that drawing app as fbgrab and copy to bin folder. when i press "left-bottom and right-top" anytime, my drawing app will work. But i will not be able to screenshot anymore.

hawhill · 02-08-2015, 07:21 AM

I think I lost you. Was that an answer to my question? I think you're describing a complex application with too few words.

Also, don't upload copyrighted code here.

knc1 · 02-08-2015, 08:46 AM

@hawhill: Yes, I think there is an answer hidden in there, somewhere.

@CaptainDerya:
If you have re-purposed a touch event to trigger your application, then you will also have to support its original function in your application (or application launcher).

Review the threads/posts on how the visible application depends on the window title.
You should be able to switch which of two windowed applications are visible by manipulating the window titles on the stack.

But as others have posted, handling the side effects of that switching might get a bit hairy.
(Hmm... That might not translate very well, but it is descriptive in English.)

CapitainDerya · 02-08-2015, 10:01 AM

I don't think it is so complex. here is my flow diagram .It is easy to program this with java, but native has better performance.
Aren't they supposed to release open source version of xtestlab126? Because, it uses X11lib.

knc1 · 02-08-2015, 10:10 AM

Quote:

Originally Posted by CapitainDerya

I don't think it is so complex. here is my flow diagram. Aren't they are supposed to release open source version of xtestlab126. Because, it uses X11lib

Only if statically linked.
Plus :
Supposed to != Will
For example:
The initramfs application is compiled and statically linked to the kernel (making that application GPLv2) -
Which does not mean they are going to release the source this side of the courthouse steps.

CapitainDerya · 02-08-2015, 11:59 AM

knc1, Thanks for advice that is about window title

02-06-2015, 04:29 PM	#1
CapitainDerya Connoisseur Posts: 56 Karma: 51304 Join Date: Sep 2012 Device: Kindle 4 NT,PW2	Draw Shapes on Pdf Document I would like to draw shapes and write notes on Pdf Reader of Kindle Paperwhite. Have you got any idea to create such a native tool?I think it isn't so hard.Here is my solution: Write a native app that is similar to "/usr/bin/xtestlab126".But It won't clear background when it opens. Listen a specific gesture event of touch screen.After that event, run this drawing app.Note: we should run this drawing app anytime. Can we put a "nop" bytecode to disable clearing background.Instead of writing new app, we can edit bytecodes of xtestlab126.I uploaded "xtestlab126". Maybe you could patch this app using IDA Pro Last edited by CapitainDerya; 02-08-2015 at 10:03 AM.

02-06-2015, 05:01 PM	#3
CapitainDerya Connoisseur Posts: 56 Karma: 51304 Join Date: Sep 2012 Device: Kindle 4 NT,PW2	I think "pressing left-bottom and right-top" captures screen. How can i listen specific gesture events. We should create a app that will work in background. If it is hard, I will change name of that drawing app as fbgrab and copy to bin folder. when i press "left-bottom and right-top" anytime, my drawing app will work. But i will not be able to screenshot anymore. Last edited by CapitainDerya; 02-06-2015 at 10:50 PM.

02-08-2015, 10:01 AM	#6
CapitainDerya Connoisseur Posts: 56 Karma: 51304 Join Date: Sep 2012 Device: Kindle 4 NT,PW2	I don't think it is so complex. here is my flow diagram .It is easy to program this with java, but native has better performance. Aren't they supposed to release open source version of xtestlab126? Because, it uses X11lib. Attached Thumbnails Last edited by CapitainDerya; 02-08-2015 at 10:12 AM.

02-08-2015, 11:59 AM	#8
CapitainDerya Connoisseur Posts: 56 Karma: 51304 Join Date: Sep 2012 Device: Kindle 4 NT,PW2	knc1, Thanks for advice that is about window title Last edited by CapitainDerya; 02-08-2015 at 04:10 PM.

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02-06-2015, 04:59 PM	#2
hawhill Wizard Posts: 1,379 Karma: 2155307 Join Date: Nov 2010 Location: Goettingen, Germany Device: Kindle Paperwhite, Kobo Mini	So you don't want to save your drawing?

02-08-2015, 07:21 AM	#4
hawhill Wizard Posts: 1,379 Karma: 2155307 Join Date: Nov 2010 Location: Goettingen, Germany Device: Kindle Paperwhite, Kobo Mini	I think I lost you. Was that an answer to my question? I think you're describing a complex application with too few words. Also, don't upload copyrighted code here.

02-08-2015, 08:46 AM	#5
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	@hawhill: Yes, I think there is an answer hidden in there, somewhere. @CaptainDerya: If you have re-purposed a touch event to trigger your application, then you will also have to support its original function in your application (or application launcher). Review the threads/posts on how the visible application depends on the window title. You should be able to switch which of two windowed applications are visible by manipulating the window titles on the stack. But as others have posted, handling the side effects of that switching might get a bit hairy. (Hmm... That might not translate very well, but it is descriptive in English.)

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