| | <<<Back 1 day (to 2016/10/03) | 20161004 |
| Dharmik | Hello | 13:16.31 |
| ghostbot | Welcome to #ghostscript, the channel for Ghostscript and MuPDF. If you have a question, please ask it, don't ask to ask it. Do be prepared to wait for a reply as devs will check the logs and reply when they come on line. | 13:16.31 |
| Dharmik | I have one PDF file and that is Password Protected. | 13:17.02 |
| | Once I unlock it and than edit some thing it shows at that time \ | 13:17.26 |
| | But when i save it and reopen it it didnt show me back | 13:17.44 |
| kens | Dharmik you're going to have to explain which product of ours you are talking about | 13:21.38 |
| Dharmik | I am using MuPDF | 13:21.52 |
| | And this problem is only with Password Protected PDF | 13:22.55 |
| kens | Hmm, I can't help you then. It would probably help the MuPDF developers if you explained *exactly* what you are doing. How did you 'unlock' the PDF file, what 'some thing' did you edit | 13:23.38 |
| Dharmik | Okay, I have one PDF file and I am using this method to unlock it in MuPDF : authenticatePassword | 13:25.30 |
| | And after that I draw some line or circle and than Save that document | 13:27.20 |
| | After that once I open that PDF again than that circle and that draw line is not visible | 13:27.59 |
| | If the PDF is not Password Protected than that look cool | 13:28.19 |
| | But If that PDF is Password Protected than that change is not visible | 13:28.49 |
| | I hope this all information is okay to understand the issue | 13:29.03 |
| kens | I hope so too, unfortunately its not a product I work on so I can't be sure. | 13:31.38 |
| Dharmik | I think Robin_Watts work on it | 13:32.02 |
| kens | All the developers were at a staff meeting and only returned home yesterday,so there may be a delay before anyone can answer this. | 13:32.05 |
| Dharmik | Is there any other way ? | 13:33.06 |
| kens | Any other way to do what ? | 13:34.00 |
| Robin_Watts | Dharmik: We don't support saving password protected PDFs in MuPDF currently. | 13:44.16 |
| | Once you unlock one, and then save it back, it will be unprotected. | 13:44.34 |
| Dharmik | Need Help in MuPDF | 14:10.00 |
| | Any one there available ? | 14:10.18 |
| Robin_Watts | Dharmik: Yup. | 14:11.19 |
| | Dharmik: We don't support saving password protected PDFs in MuPDF currently. | 14:11.36 |
| | Once you unlock one, and then save it back, it will be unprotected. | 14:11.40 |
| Dharmik | So that editing mode is only for unprotected file ? | 14:12.18 |
| Robin_Watts | Dharmik: That's not how I'd characterise it. | 14:13.42 |
| | We we can read both unprotected, and protected files. We can edit any file once read. We can only write back unprotected ones. | 14:14.13 |
| Dharmik | Okay, Robin. So I am able to edit that file and than save it but that changes is not save in to Passwordprotected file | 14:15.36 |
| Robin_Watts | Dharmik: Exactly. | 14:15.48 |
| Dharmik | Any alternative to save that. Because in my application all PDF are password protected :( | 14:16.26 |
| Robin_Watts | Not currently. | 14:16.58 |
| | What application, if I can ask? | 14:17.04 |
| Dharmik | It Based on Free Book Application . User read and edit them. | 14:17.43 |
| | I already try that PDFTRONE | 14:18.22 |
| | It save that book which are password protected | 14:18.40 |
| Robin_Watts | Dharmik: So it's ann AGPL licensed open source app? | 14:21.07 |
| Dharmik | Yes, I will take care of that . It not currently avilable in market. | 14:23.07 |
| Robin_Watts | Dharmik: Adding the ability to save password protected files is on our todo list, but it's not near the top. | 14:25.33 |
| Dharmik | @Robin you there? | 14:32.26 |
| Robin_Watts | I am. | 14:32.39 |
| Dharmik | So I need to set all books without password ? | 14:33.19 |
| Robin_Watts | Dharmik: I don't see how I can be clearer than I have been. | 14:33.40 |
| | If you are relying on MuPDF to save files, then they will all be unprotected, currently. | 14:34.13 |
| Dharmik | Okay, Is there any way to remove password from password protected file ? | 14:35.52 |
| | Is there any method ? | 14:36.05 |
| Robin_Watts | Dharmik: Urm... Load a file and save it? | 14:37.03 |
| | or run it through mutool clean. | 14:37.16 |
| a7x | hello, is there any way to convert some pages of a pdf file to grey-scale but keep everything else as it is? | 15:18.04 |
| Robin_Watts | a7x: Easy way, no. | 15:18.37 |
| a7x | the only way is splitting it and merging afterwards? | 15:19.15 |
| Robin_Watts | a7x: That's one way. It's the only way I can think of which doesn't require programming. | 15:19.48 |
| a7x | I am able to develop | 15:20.01 |
| kens | You could write a Ghostscript device to do so yourself, modifying the existing pdfwrite device. | 15:20.19 |
| a7x | I was looking into pyPdf but looks like it's no use for this specific case | 15:20.30 |
| chrisl | kens: would pdfwrite handle changing the ProcessColor on a per-page basis? | 15:21.39 |
| a7x | uhm | 15:21.52 |
| kens | chrisl I believe so yes, in the current CMS | 15:21.58 |
| a7x | ok | 15:22.20 |
| kens | It coudl probably be done with a BeginPage or EndPage procedure which altered the ColorConversionStrategy by sending a setpagedevice | 15:22.30 |
| a7x | I will check which way is faster i suppose that modifying the pdfwrite device would require more effort that I am actually willing to put in it (it's just for a single file) | 15:29.47 |
| | still this is an interesting function that I was not expecting to be missing, it can be useful in case only some pages must be printed with colours | 15:30.54 |
| | thanks, I will let you know :) | 15:31.38 |
| Robin_Watts | a7x: If it was me, I'd do it by using MuPDF. | 15:31.56 |
| a7x | uhm | 15:32.04 |
| Robin_Watts | Specifically, I'd work at the page operator level, using the pdf stream filtering mechanism. | 15:32.20 |
| | But that would require you to understand PDF. | 15:32.30 |
| a7x | looks like each ways has its own cons | 15:33.03 |
| | (deep knowledge of gs, or pdf) | 15:33.10 |
| Robin_Watts | yes. | 15:33.18 |
| a7x | well, still, I will try in the next hour or so and let you know | 15:33.36 |
| | thank you | 15:33.41 |
| kens2 | slaps kens around a bit with a large trout | 15:40.41 |
| | Forward 1 day (to 2016/10/05)>>> | |
Log of #ghostscript at irc.freenode.net.