A homebrewed program for viewing image archives (cbz, cbr,...) - Page 6

rkomar · 10-21-2012, 05:12 PM

I've put up a new version that fixes the broken rotation menu, and autosaves the state (including last page read) whenever the program is backgrounded. I think the latter was only a problem on devices with multi-tasking.

I've also added an option to automatically zoom each cartoon panel to fit the screen. The advantage is that it makes the panel easier to read. The disadvantage is that the zoom can change with each panel, and it's harder to keep track of where you are on the page (although the page map icon in the bottom left helps with that). The panel detection algorithm gets it wrong from time to time, and having autozooming on makes things even more confusing then. Anyway, everyone can choose whether they want to use this feature or not.

Thanks to Pascal V for the bug reports and suggestions.

readMax · 10-23-2012, 03:21 PM

Hi rkomar,

just a (stupid?) question:
will that software run also on a PB Pro612 (may be nearly the same as the 603)?

Thanks in advantage.

Max.

rkomar · 10-23-2012, 03:53 PM

Quote:

Originally Posted by readMax

Hi rkomar,

just a (stupid?) question:
will that software run also on a PB Pro612 (may be nearly the same as the 603)?

Thanks in advantage.

Max.

It should. Get the Pro-360+ version, and not the 3XX version. It should be compatible with all of the recent models (Pro, 360+, Touch,...). I can only test it on a 902, so if anyone finds any incompatibilities on other models, please let me know.

The 3XX version is for the old 301, 302, 360 models. They use a different ABI, so the programs are not compatible with more recent models.

readMax · 10-23-2012, 04:01 PM

Thanks for the very high speed answer :-)

Max.

Klapo · 10-27-2012, 07:02 PM

hmmm, does it support password protected zip (cbz) or rar (cbr) files?

rkomar · 10-27-2012, 08:46 PM

Quote:

Originally Posted by Klapo

hmmm, does it support password protected zip (cbz) or rar (cbr) files?

No, it doesn't. I haven't looked at the APIs for the libzip and libunrar libraries, though. It might be easy to add support for that. I'll look into it and update this post when I find out.

Klapo · 10-27-2012, 09:50 PM

Good luck then, should be easy : )
Also much thanks for effort.

rkomar · 10-30-2012, 03:43 PM

It looks like unrar and the latest version of libzip will accept a simple text password for decrypting files. Is that what you had in mind, or were you thinking about some more complicated DRM encryption scheme (like ADE)?

Unfortunately, dialogs are threaded in the InkView scheme, so you can't just get the password as you try to open the file. The logic would have to be completely reworked in that part of the code. I'll see how difficult it is to do that before I decide if I'll attempt it.

Klapo · 10-30-2012, 05:57 PM

Nah, just simple ZipCrypto, AES-256...

Hmm, how about this:

When opening zip file, call function:
> zip_stat

when encryption method is used:
Ask for password (we can type it via pbkeyboard), save passwd to cache/ram and call function:
zip_fopen_index_encrypted

else, just zip_fopen_index like always.

What do you think about it? (Let's just ignore unrarlib (cause I don't know where I can find documentation

))

rkomar · 10-30-2012, 06:53 PM

The problem is, the function that invokes the dialog to get the password returns immediately and the program continues from there (without the password). When the dialog is finished, it returns the response via a callback function. So, there's no way to sit and wait for the password within the file opening code because no new input events will be handled until the process returns control back to the main InkView event loop. The code will have to be able to start the dialog, continue on without opening the file, and then re-try again from the callback function when the password is returned. Currently, it's all nested inside logic that assumes the opening either works or the program quits, with no second chances. It's rejigging that logic that's the difficulty.

Klapo · 10-31-2012, 10:10 AM

Hmm, okay... I'll leave this to you, if you think that can be done I'll be glad, if not.. it can't be helped : )

Anyway thanks for checking it.

elcico · 10-31-2012, 02:07 PM

Hello rkomar,
I bought the 912 poketbook only after discovering your app!
What do you think about an auto crop borders feature?
Sorry for my english... ciao

rkomar · 10-31-2012, 05:16 PM

Quote:

Originally Posted by elcico

Hello rkomar,
I bought the 912 poketbook only after discovering your app!
What do you think about an auto crop borders feature?
Sorry for my english... ciao

I suppose it's possible now that the panel detection code is there, but it would add even more complexity to the image positioning code (which has become pretty complicated already). There is a feature for custom zooming using the stylus, and it was added for cropping the image width-wise. Have you tried using it? Maybe it's good enough for what you want.

elcico · 10-31-2012, 06:10 PM

Yes, I tried it, but it's ok only if strips are centered in all pages, almost impossible... I think this feature would be welcome by many people

rkomar · 10-31-2012, 07:23 PM

Okay, I'll take a look. I'm pretty busy with my job these days, so it may be a while before I can get around to it.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
RAR archives added as CBR format	hrrgll	Library Management	5	11-17-2022 05:37 PM
Best tablet for .cbr and .cbz	astrangerhere	Android Devices	5	09-20-2011 05:17 PM
another image, cbr and cbz viewer	Max	iRex	62	06-10-2010 01:57 PM
cbr and cbz convertor	asdx	Astak EZReader	4	02-05-2010 02:37 AM
My homebrew imanga (image, cbz, cbr viewer)!	ericshliao	iRex	14	08-18-2009 11:50 PM

10-21-2012, 05:12 PM	#76
rkomar Wizard Posts: 2,985 Karma: 18343081 Join Date: Oct 2010 Location: Sudbury, ON, Canada Device: PRS-505, PB 902, PRS-T1, PB 623, PB 840, PB 633	I've put up a new version that fixes the broken rotation menu, and autosaves the state (including last page read) whenever the program is backgrounded. I think the latter was only a problem on devices with multi-tasking. I've also added an option to automatically zoom each cartoon panel to fit the screen. The advantage is that it makes the panel easier to read. The disadvantage is that the zoom can change with each panel, and it's harder to keep track of where you are on the page (although the page map icon in the bottom left helps with that). The panel detection algorithm gets it wrong from time to time, and having autozooming on makes things even more confusing then. Anyway, everyone can choose whether they want to use this feature or not. Thanks to Pascal V for the bug reports and suggestions.

10-23-2012, 03:21 PM	#77
readMax Enthusiast Posts: 29 Karma: 10 Join Date: Oct 2012 Location: Germany Device: Pro612	Hi rkomar, just a (stupid?) question: will that software run also on a PB Pro612 (may be nearly the same as the 603)? Thanks in advantage. Max.

10-23-2012, 04:01 PM	#79
readMax Enthusiast Posts: 29 Karma: 10 Join Date: Oct 2012 Location: Germany Device: Pro612	Thanks for the very high speed answer :-) Max.

10-27-2012, 07:02 PM	#80
Klapo Member Posts: 21 Karma: 10 Join Date: Oct 2012 Location: Poland Device: PW2, PW3, PW4, PW5SE	hmmm, does it support password protected zip (cbz) or rar (cbr) files?

10-27-2012, 09:50 PM	#82
Klapo Member Posts: 21 Karma: 10 Join Date: Oct 2012 Location: Poland Device: PW2, PW3, PW4, PW5SE	Good luck then, should be easy : ) Also much thanks for effort.

10-30-2012, 03:43 PM	#83
rkomar Wizard Posts: 2,985 Karma: 18343081 Join Date: Oct 2010 Location: Sudbury, ON, Canada Device: PRS-505, PB 902, PRS-T1, PB 623, PB 840, PB 633	It looks like unrar and the latest version of libzip will accept a simple text password for decrypting files. Is that what you had in mind, or were you thinking about some more complicated DRM encryption scheme (like ADE)? Unfortunately, dialogs are threaded in the InkView scheme, so you can't just get the password as you try to open the file. The logic would have to be completely reworked in that part of the code. I'll see how difficult it is to do that before I decide if I'll attempt it.

10-30-2012, 05:57 PM	#84
Klapo Member Posts: 21 Karma: 10 Join Date: Oct 2012 Location: Poland Device: PW2, PW3, PW4, PW5SE	Nah, just simple ZipCrypto, AES-256... Hmm, how about this: When opening zip file, call function: > zip_stat when encryption method is used: Ask for password (we can type it via pbkeyboard), save passwd to cache/ram and call function: zip_fopen_index_encrypted else, just zip_fopen_index like always. What do you think about it? (Let's just ignore unrarlib (cause I don't know where I can find documentation ))

10-30-2012, 06:53 PM	#85
rkomar Wizard Posts: 2,985 Karma: 18343081 Join Date: Oct 2010 Location: Sudbury, ON, Canada Device: PRS-505, PB 902, PRS-T1, PB 623, PB 840, PB 633	The problem is, the function that invokes the dialog to get the password returns immediately and the program continues from there (without the password). When the dialog is finished, it returns the response via a callback function. So, there's no way to sit and wait for the password within the file opening code because no new input events will be handled until the process returns control back to the main InkView event loop. The code will have to be able to start the dialog, continue on without opening the file, and then re-try again from the callback function when the password is returned. Currently, it's all nested inside logic that assumes the opening either works or the program quits, with no second chances. It's rejigging that logic that's the difficulty.

10-31-2012, 10:10 AM	#86
Klapo Member Posts: 21 Karma: 10 Join Date: Oct 2012 Location: Poland Device: PW2, PW3, PW4, PW5SE	Hmm, okay... I'll leave this to you, if you think that can be done I'll be glad, if not.. it can't be helped : ) Anyway thanks for checking it.

10-31-2012, 02:07 PM	#87
elcico Junior Member Posts: 5 Karma: 10 Join Date: Oct 2012 Device: poketbook 912, kindle 4 & pw2	Hello rkomar, I bought the 912 poketbook only after discovering your app! What do you think about an auto crop borders feature? Sorry for my english... ciao

10-31-2012, 06:10 PM	#89
elcico Junior Member Posts: 5 Karma: 10 Join Date: Oct 2012 Device: poketbook 912, kindle 4 & pw2	Yes, I tried it, but it's ok only if strips are centered in all pages, almost impossible... I think this feature would be welcome by many people

10-31-2012, 07:23 PM	#90
rkomar Wizard Posts: 2,985 Karma: 18343081 Join Date: Oct 2010 Location: Sudbury, ON, Canada Device: PRS-505, PB 902, PRS-T1, PB 623, PB 840, PB 633	Okay, I'll take a look. I'm pretty busy with my job these days, so it may be a while before I can get around to it.