| | <<<Back 1 day (to 2011/09/13) | 2011/09/14 |
| Jega | hi there. I am looking for tips to show pdf files inside an NPAPI plugin. My preferred choice is usning Firebreath and MuPDF. | 08:22.08 |
| kens | We can answer questions about MuPDF and PDF in general, I've never heard of Firebreath, and know nothing about NPAPI. | 08:22.51 |
| | There is already a MuPDF plugin for Firefox though. | 08:23.27 |
| Jega | Thanks kens. could you pls give me the url where I can download the source code? | 08:23.52 |
| ghostbot | pas de quoi, Jega | 08:23.52 |
| kens | THe source code for MuPDF ? | 08:24.04 |
| Jega | nope. the source code for the FF plugin | 08:24.18 |
| kens | If its not supplied as part of the MuPDF code, then nmo, sorry. You'll have to wait for Tor to wake up. | 08:24.48 |
| Jega | thnx. will wait. realize that I am in the wrong timezone. sorry guys | 08:25.27 |
| kens | Not really the wrong time zone, Tor is in Sweden, but is a late riser. | 08:25.54 |
| Jega | he he | 08:26.17 |
| | Can I ask some advice from you for a project I am into? | 08:27.01 |
| kens | You can always ask, whether I can help is moot.... | 08:27.15 |
| Jega | Ok. My customer want to show a pdf files through web on subscription basis. So I cannot use a normal plugin that comes with chrome or adode reader plugin. | 08:28.15 |
| | I need to create my own pdf plugin with activation code | 08:28.35 |
| kens | Hmm, I thin kyou could use custom encryption even with Acrobat. | 08:28.48 |
| | But I don't know how to do custom decryption filters in Acrobat. | 08:29.09 |
| Jega | Already had a firebreath NPAPI plugin using firebreath.org | 08:29.56 |
| | I can render text and images. Now need to render PDF | 08:30.17 |
| | will encrypt pdf using m_crypt and decrypt before rendering the pdf. | 08:30.41 |
| | Am I going on the right path? | 08:30.48 |
| kens | Approximately so I would think. | 08:31.02 |
| | You *must* do something to the PDF so that other readers can't open it. | 08:31.14 |
| | A custom encryption seems the best solution to me. | 08:31.25 |
| Jega | On expiry of the date limit, the plugin displays a warning to renew the subscription | 08:31.27 |
| | yep | 08:31.38 |
| kens | Well, that means coding the expiry date into the encryption, or deactivating the plugin or something, but that's a simple matter of programming :-) | 08:31.58 |
| | A custom encryption applied to the PDF seems like the best solution to me. | 08:32.21 |
| | This assumes you have control over the PDF creation as well of course. | 08:32.32 |
| Jega | yeah. I can even write the expiry date on registry (again encrypted) | 08:32.48 |
| kens | You could also simply encrypt the entire file and decrypt locally, rather than using the PDF custom encryption stuff. | 08:33.16 |
| Jega | and check the expiry date. on new subscription, the registry can be further exteded | 08:33.32 |
| kens | You would need to do something like that if you can't control the PDF creation. | 08:33.40 |
| Jega | firebreath extension gives a hWND where I can get the hDC. | 08:34.31 |
| | but it didn't stike to me that rendering the pdf is not an easy business | 08:35.00 |
| kens | :-) | 08:35.06 |
| Jega | that is why I am here ;-) | 08:35.08 |
| kens | MuPDF and Ghostscritp can both do this, but since you only want PDF, best to stick with MuPDF | 08:35.30 |
| Jega | yes. MyPDF is light weight and doesn't add too much into my plugin | 08:36.04 |
| | that is what I heard | 08:36.12 |
| kens | I would agree. | 08:36.18 |
| | Note that if this is a commercial application you may need a licence | 08:36.44 |
| | I am not a lawyer etc. | 08:36.50 |
| Jega | I dont mind paying if it is reasonable. | 08:37.20 |
| kens | I'd suggest you see if MuPDF is suitable first. | 08:37.37 |
| | Then if you like it you can contact Artifex's sales people and see what the commercial deal would be. | 08:38.01 |
| Jega | downloaded the win version and tested. It suits me perfectly | 08:38.21 |
| | what about gs | 08:38.28 |
| | ? | 08:38.37 |
| kens | Ghostscript handles PDF, PS, XPS and PCL but is much bigger and more complex. | 08:38.52 |
| Jega | but license is BSD or GPL? | 08:39.08 |
| kens | GPL | 08:39.15 |
| Jega | so, again I am stuch here, right. what if I give my source code to my client | 08:39.39 |
| kens | If you want to talk about licencing you should contact scott.sackett@artifex.com | 08:39.48 |
| Jega | fine. will send a mail now. | 08:40.14 |
| kens | If you give the source code to the client, then they could easily defeat your encryption. | 08:40.14 |
| | Scott is in the US and attending a trade show right now, but they have net access. | 08:40.38 |
| Jega | My Client is my employer who is the buyer of the software | 08:40.52 |
| | his clients will have the plugin | 08:41.17 |
| kens | But presumably you intend to distribute the plugin ? | 08:41.17 |
| | Well, as I said, I'm not a lawyer :-) | 08:41.28 |
| Jega | he will distribute it to his distributors | 08:41.36 |
| kens | Is it being sold somewhere ? | 08:41.57 |
| | If not then you are probably OK, if it is, then probably not. | 08:42.14 |
| Jega | I am selling the software + code to my customer | 08:42.16 |
| | he will host it on his server | 08:42.23 |
| | the client has to download the plugin and install (which is free) | 08:42.37 |
| | and then, they can access pdf using this plugin | 08:42.49 |
| kens | Technically I think that's OK under the GPL, but you might like to seek a legal opinion. | 08:43.14 |
| Jega | ok | 08:43.25 |
| kens | Note that we also do support contracts, which might be of interest to your customer | 08:43.30 |
| Jega | well. I dont mind getting paid consultancy it this is reasonable. | 08:44.36 |
| | err if | 08:44.51 |
| kens | Not so much that, it means tat if your customer was to find PDF files that didn't work due to bugs, they would be treated the same as a licencee rather than a free user. | 08:45.19 |
| chrisl | To comply with the GPL, any code you link to the GPL'ed code in a distributed binary must also be GPL'ed and made available. | 08:45.20 |
| kens | Which would defeat teh point of encrypting it, since the end user would be able to defeat teh encryption. | 08:45.49 |
| Jega | In fact we are a LAMP/WAMP company and our main business is education industry with PHP+MySQL+Jquery. I love to contribut tothe community | 08:46.51 |
| | the encryption key could be modified on every compilation | 08:47.17 |
| | that is not a big issue | 08:47.22 |
| chrisl | Jega: even being compliant with the letter of the GPL, as kens says, it is probably worth talking to Scott about the licensing options, simply for the better support terms. | 08:49.06 |
| Jega | perfect | 08:49.36 |
| | will send a mail to him right away | 08:49.49 |
| kens | I've sent an email to the show prompting them to check. | 08:50.18 |
| | And poiting to the IRC log. | 08:50.37 |
| Jega | sent a mail | 08:57.31 |
| | thanks pals. Will come again, after getting a reply | 08:57.57 |
| ghostbot | Jega: de rien | 08:57.57 |
| kens | OK well Tor should be along in the next hour or so, if you see him pop up then ask him about the source to the plugin | 08:58.04 |
| Jega | cool | 08:58.21 |
| kens | Why has ghostbot suddenly started piping up, and in French ? | 08:58.45 |
| | Is this something Robin_Watts has done ? | 08:58.54 |
| chrisl | Yes, not sure I like it :-( | 08:59.23 |
| kens | Me neigher. | 08:59.32 |
| | neither | 08:59.36 |
| Jega | yep. it is confusing. I thougt I made some stupid questions and somebody is abusing me :-) | 09:04.13 |
| | then I realized it is a bot | 09:04.27 |
| | and answering my every thanks with welcome in french | 09:04.41 |
| | had to use google translate of course :-) | 09:04.54 |
| kens | I think Robin was trying to get ghostbot to answer questions like 'Can I ask a question ?' automatically to save us saying 'don't ask to ask, just ask'. | 09:05.04 |
| | This may be an unintended side-effect. | 09:05.16 |
| | When he pops up I think I'll ask if we can turn it off.... | 09:05.41 |
| Jega | perfect. | 09:05.56 |
| kens | Heading out, be back in a couple of hours. | 09:26.05 |
| Robin_Watts | ghostbot forget thanks | 10:04.20 |
| ghostbot | i didn't have anything called 'thanks' to forget, Robin_Watts | 10:04.20 |
| Robin_Watts | thanks | 10:47.30 |
| | ghostbot: thanks | 10:47.37 |
| ghostbot | Robin_Watts: no worries | 10:47.37 |
| Robin_Watts | OK, it should only react to thanks, if you directly address it now. | 10:47.50 |
| kens | Thanks for the 'tanks' change to ghostbot Robin_Watts | 12:19.43 |
| Robin_Watts | kens: no worrie.s | 12:19.59 |
| | I knew when I enabled ghostbot talking without being addressed it would need some tweaks. | 12:20.17 |
| sebras | Robin_Watts: are customer bugs tagged in some way in bugzilla? | 13:28.00 |
| | Robin_Watts: or maybe I'm not supposed to know. :) | 13:28.15 |
| kens | THey have non empty values in the customer field | 13:28.21 |
| | In 'search' in Bugzilla use 'Advanced Searching Using Boolean Charts' | 13:28.54 |
| | Select the customer field from the drop-down on the left | 13:29.10 |
| | Then 'matches regular expression' from the second drop-down | 13:29.32 |
| | And put . in the text field | 13:29.40 |
| Robin_Watts | sebras: sorry, was at lunch. What kens said :) | 13:31.48 |
| | Yay, I have pdfdraw building again. | 13:40.10 |
| | ok, back to mupdf building completely with no warnings. Now to fix the inevitable bugs when I try to run it. | 15:14.04 |
| mvrhel2 | Robin_Watts: did you work at all on profiling the planar stuff? | 15:20.48 |
| Robin_Watts | mvrhel2: No, not yet. | 15:21.03 |
| mvrhel2 | ok | 15:21.07 |
| Robin_Watts | I started rejigging mupdf on the plane, and it's been a large rabbithole. | 15:21.28 |
| | When I get it stabilised again I can put it up for comments (I am confident that tor will hate it :( ) | 15:21.54 |
| | Then I'll look at why the pcl planar rop stuff is calling planar_to_chunky | 15:22.23 |
| | mvrhel2: Did you report the lcms2 bug to marti? | 15:23.25 |
| sebras | kens, Robin_Watts: thanks. I'll add that query to my bugzilla login since I know those bugs are more important to you guys. :) | 15:33.01 |
| mvrhel2 | no not yet. i did get some good progress done on doing color conversion before interpolations when we have enlargements. I still need to verify that lcms2 is broken with marti's tools | 15:33.08 |
| Robin_Watts | mvrhel2: Ah, cool. That could be a big boost, I think. | 15:33.36 |
| mvrhel2 | yes. especially at 2400dpi.... | 15:34.07 |
| | which is what prompted the bug | 15:34.19 |
| | bbiab. carpet cleaners are coming and need to move a few things.... | 15:35.16 |
| Robin_Watts | tor8: Do you have an xcode project for mupdf ? | 15:38.23 |
| | (I want a graphical debugger!) | 15:38.36 |
| tor8 | Robin_Watts: I banged on it a bit yesterday for the iOS stuff, but got so fed up with it I raged and made it cross compile for iOS using the regular makefiles as an external shell script target | 15:39.29 |
| Robin_Watts | tor8: That's what I've done for gs. | 15:39.48 |
| tor8 | I think if you just make it an external shell script / makefile target the GUI debugger should work fine | 15:39.59 |
| | what drove me crazy was the whole business with third party libraries, header search paths, and crappy GUI dialogs to set everything up | 15:40.30 |
| Jega | Tor, I am looking for the source code of Firefox Plugin for MuPDF. Kens said perhaps you can help me | 15:47.38 |
| kens | Hi henrys, last day of show! | 15:48.24 |
| henrys | woohoo | 15:48.54 |
| mvrhel2 | how has the show been henrys? | 15:53.38 |
| tor8 | Jega: that source is horribly out of date | 15:56.43 |
| Jega | I can understand. I can create a new NPAPI plugin using firebreath. Could you help me how can I use this with MuPDF | 15:58.04 |
| tor8 | Jega: http://git.ghostscript.com/?p=mupdf.git;a=tree;f=apps/mozilla;h=6d54273f8f0a4882187573085dc532040ec060ab | 15:58.14 |
| | that's the last version of the source | 15:58.30 |
| Jega | thnx | 15:58.38 |
| tor8 | Jega: I read the logs on your previous discussions. if your client is going to be distributing a plugin to their customers they'll also need to distribute the source to comply with the GPL. | 15:59.44 |
| Jega | thnx for highlighting this | 16:00.21 |
| tor8 | so I'd really talk to scott and inquire about getting a commercial license | 16:00.22 |
| Jega | I sent a mail to him and waiting for his reply | 16:00.35 |
| | and I dont mind paying a license. if the cost is reasonable. | 16:01.24 |
| tor8 | you can comply with the GPL even with encryption, but as you can imagine, any encryption scheme will prove fragile. time expiration code can be worked around easily with access to source, so once decrypted, always decrypted. | 16:02.21 |
| Jega | I agree | 16:03.12 |
| henrys | mvrhel2:the show is going okay for our customers that have booths here we haven't seen much direct action - as expected. | 16:06.54 |
| Jega | I got some error cloning the git repo | 16:06.54 |
| | 6d54273f8f0a4882187573085dc532040ec060ab... | 16:06.57 |
| | fatal: http://git.ghostscript.com/?p=mupdf.git;a=tree;f=apps/mozilla;h=6d54273f8f0a4882187573085dc532040ec060ab/info/refs not found: did you run git update-server-info on the server? | 16:06.57 |
| tor8 | what did you click to get that link? | 16:07.55 |
| Jega | I copied the link you sent and pasted on the tortoice clone dialog. I am bit new to git. old fan of svn :-) | 16:09.07 |
| tor8 | well, that link I sent is just a view of the plugin files on the last rev they existed :) | 16:09.41 |
| | use git://git.ghostscript.com/mupdf.git to clone | 16:10.06 |
| Jega | thnx | 16:10.16 |
| | now works. | 16:12.31 |
| | The cloned source does have mozilla folder under apps. is it removed from the repo? | 16:20.19 |
| | err does not have | 16:20.28 |
| Robin_Watts | Jega: The cloned repo contains the plugin files, but they are not present in the latest revision. | 16:23.12 |
| | You need to: git checkout 6d54273 | 16:23.32 |
| | That will change the working copy back in time to the last rev at which they appeared. | 16:23.49 |
| Jega | thnx robin | 16:23.58 |
| Robin_Watts | np. | 16:24.04 |
| Jega | sorry abt being very naive on gits. still working on svn as our repo system | 16:24.37 |
| kens | Time to go, night all | 16:44.15 |
| Robin_Watts | tor8: Have you built on windows since adding pdf_font_DroidSansMono ? | 17:20.18 |
| tor8 | Robin_Watts: yes, I did the windows binary release | 17:21.09 |
| | the dependencies for the pregen stuff may be off though | 17:21.26 |
| | "if not exist generated/font_droid.h fontdump.exe generated/font_droid.h fonts/droid/DroidSans.ttf fonts/droid/DroidSansMono.ttf" only tests if the result exists, not if the sources have changed | 17:22.09 |
| Robin_Watts | When I do a rebuild Solution, I get: | 17:23.48 |
| | 1>c:\cvs\artifex\mupdf.git\pdf\pdf_fontfile.c(120) : error C2065: 'pdf_font_DroidSansMono' : undeclared identifier | 17:24.03 |
| tor8 | remove generated/font_droid.h and rebuild | 17:28.11 |
| Robin_Watts | Yeah, just figured that out :) | 17:28.40 |
| | Thanks. | 17:28.43 |
| | tor8: I've pushed what I've got so far to my repo on casper as "failing_allocs" branch. | 18:27.13 |
| | It all seems to build without complaint and pdfdraw works. | 18:27.41 |
| | Forward 1 day (to 2011/09/15)>>> | |
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