KindCalc: Calculator for Kindle Touch

[digory]

I finally got the HelloWorld running, and I even managed to work my calculator applet into a proper Kindlet, and it actually works!! Finally! I am glad I found enough information on this forum, albeit that it took me quite some time until I found the proper threads.

I am going to post the app here in this thread as soon as it is ready. Currently I am having font size problems. I'll have to dig this forum for the manifest's Font-Size-Mode attribute, I guess.

So long

EDIT:
Release 1.0: https://www.mobileread.com/forums/sho...71#post2147271

Release 1.01 with full sources: https://www.mobileread.com/forums/sho...6&postcount=65

[geekmaster]

Originally Posted by digory

I finally got the HelloWorld running, and I even managed to work my calculator applet into a proper Kindlet, and it actually works!! Finally! I am glad I found enough information on this forum, albeit that it took me quite some time until I found the proper threads.

I am going to post the app here in this thread as soon as it is ready. Currently I am having font size problems. I'll have to dig this forum for the manifest's Font-Size-Mode attribute, I guess.

So long

I have not made a kindlet yet. Please post a simple "guide" (perhaps in a wiki page) of the steps you found that worked for you (or at least some links to the posts you found valuable). A lot of the good stuff here is buried deeply and may not be easy to find. Even just a page (or post) with links (mini index) of the relevant stuff that helped you get it working would be a great addition to the kindlet index.

Thanks.

EDIT: I just saw the fonthack reference in the other thread. Perhaps we need to simplify that into a basic "how to write and package a kindlet" guide.

[NuPogodi]

I'm not sure that it's proper place, but... Just an info for those who use kindlepdfviewer: I've recently a bit modified inputbox.lua in the kpdfviewer-release so to have an opportunity to calculate. It has no appreciable value for the reader, so i did not share this code yet. But if anyone is interested, drop me a line.

[geekmaster]

Originally Posted by NuPogodi

I'm not sure that it's proper place, but... Just an info for those who use kindlepdfviewer: I've recently a bit modified inputbox.lua in the kpdfviewer-release so to have an opportunity to calculate. It has no appreciable value for the reader, so i did not share this code yet. But if anyone is interested, drop me a line.

"No appreciable value"? I think it would be valuable as an example (for a learning experience) if nothing else, and I happen to like embedded calculators in apps, so please post it.

[NuPogodi]

Originally Posted by geekmaster

"No appreciable value"? I think it would be valuable as an example (for a learning experience) if nothing else, and I happen to like embedded calculators in comprehensive apps, so please post it.

calculator_for_kpdfviewer_2012.05.zip (12 KB) contains two files:
1. inputbox.lua (it includes the calculator code)
2. filechooser.lua (to run the calculator by pressing 'K')
Just replace the corresponding files from the latest kpdfviewer-release.

NB. Since the key 'H' (usually used in kpdfviewer to see helppage) is used for char input, the help (where the rest shortcuts are described) within inputbox is called by Alt-H.

[knc1]

Some people read *.pdf files with a lot of embedded math.
So having a good calculator in the pdf reader can be a useful feature in following such documents.

[digory]

Originally Posted by geekmaster

I have not made a kindlet yet. Please post a simple "guide" (perhaps in a wiki page) of the steps you found that worked for you (or at least some links to the posts you found valuable). A lot of the good stuff here is buried deeply and may not be easy to find. Even just a page (or post) with links (mini index) of the relevant stuff that helped you get it working would be a great addition to the kindlet index.

I've written a little HOWTO/FAQ. See:
https://www.mobileread.com/forums/sho...37#post2141537
Cheers

[geekmaster]

Originally Posted by digory

I've written a little HOWTO/FAQ. See:
https://www.mobileread.com/forums/sho...37#post2141537
Cheers

I saw that. Thanks!

[digory]

Here comes the first version of my calculator! Please tell me if it runs on your kindle!
Cheers

[geekmaster]

Originally Posted by digory

Here comes the first version of my calculator! Please tell me if it runs on your kindle!
Cheers

I do not see source code in the zip file.

In this forum we share our source code so we can learn from each other. In the parent forum, there are those who do not share source code, but as a general rule, we do here. After all, you learned from us, so it is only right that you share with us (especially what you post here).

We also use open source licensing (where permissive licenses such as MIT or BSD are preferred by most of us, myself included). There are professional developers who are not allowed to touch GPL however (even for personal projects), to prevent "infecting" their commercial code (or even the appearance of having done so). I go to great lengths to find code that has permissive licensing.

Please share. Thanks.

After all, people can buy a real physical calculator at the dollar store, so it is not like it has all that much commercial value. It is a nice addition to a jailbroken kindle however, so making it free and open would be a valuable addition to our code base here. And it does look rather nice from the screenshot provided above.

[PoP]

Originally Posted by digory

Here comes the first version of my calculator! Please tell me if it runs on your kindle!
Cheers

FYI. I merged your keys into the Merged developer keystore

[thomass]

Originally Posted by digory

Here comes the first version of my calculator! Please tell me if it runs on your kindle!
Cheers

Thanks for the app. Just tried it and worked w/o any problem

I wish we could write a whole line as in NuPogodi's add-on for the kindlepdfviewer.

[digory]

Thanks PoP for merging my keys into the Merged dev keystore. @geekmaster: The source code currently is a mess, and I don't do much magic in there. I might post it here after I've cleaned it up a bit.

[geekmaster]

Originally Posted by digory

Thanks PoP for merging my keys into the Merged dev keystore. @geekmaster: The source code currently is a mess, and I don't do much magic in there. I might post it here after I've cleaned it up a bit.

We are looking forward to seeing the source code (I am not alone here).

[visvet]

Hello, the calculator KindCalc works on my KT (5.1.2) w/o any problem for about 5 days. Now, when I start KindCalc (Peter Amberg), it is Error message window:
"The permissions to open the item have an invalid date. Please contact the developer. <Close>".

I saw the time on KT was incorrect, so I set actual time.
It is still not working cacl - same error.

I didnt find solution, how check and set correct date, so I turn on wifi, open web sites, etc.

And - after that the cacl working again!

Why the time and date changed itself?
How can I check date and set new one?