Programming in Eiffel

imustafin · 06-16-2022, 05:18 PM

Hello everyone!

Previously we could write programs in C and C++ which is quite straightforward with the published SDKs.

Less known are the Python (Pyinkview) and Go wrappers of libinkview.

And now I want to present you a new wrapper/SDK for the Eiffel programming language. It works with EiffelStudio 19.05.

The SDK (if we can call it so) consists of two parts:
1. The so called platform which configures EiffelStudio to use the official C/C++ PocketBook compilers. Available at https://github.com/imustafin/estudio...-linux-gnueabi.
2. The wrap_inkview Eiffel library which should provide a nice OOP-like interface for libinkview. Available at https://github.com/imustafin/wrap_inkview

Part 1 works, needs testing. Part 2 needs a lot of work to design and develop a good interface. For now it just provides direct access to C functions.

I am using this in pb-patience which is a patience/solitaire game collection for touchscreen PBs. I expect to extract the good inkview patterns to wrap_inkview.

All of this is tested on PB X.

Questions
1. What existing UI library/approach might be suitable for use in eInk devices in general and PB + inkview specifically?
2. Do PBs support libpthread? It compiles without any errors but crashes on the device. I wonder if I should try to fix it or is it even possible.

rkomar · 06-16-2022, 08:03 PM

I know that they used to support pthreads for sure. I used it previously for some applications that had multiple threads (although that was about ten years ago). So, I expect that you could still use pthreads on the latest devices.

Note that I left the inkview event handling in the main thread, and spawned new threads for handling events I sent from the main thread.

06-16-2022, 05:18 PM	#1
imustafin Member Posts: 13 Karma: 95478 Join Date: Mar 2022 Device: Pocketbook X (1040), Pocketbook 602 pro	Programming in Eiffel Hello everyone! Previously we could write programs in C and C++ which is quite straightforward with the published SDKs. Less known are the Python (Pyinkview) and Go wrappers of libinkview. And now I want to present you a new wrapper/SDK for the Eiffel programming language. It works with EiffelStudio 19.05. The SDK (if we can call it so) consists of two parts: 1. The so called platform which configures EiffelStudio to use the official C/C++ PocketBook compilers. Available at https://github.com/imustafin/estudio...-linux-gnueabi. 2. The wrap_inkview Eiffel library which should provide a nice OOP-like interface for libinkview. Available at https://github.com/imustafin/wrap_inkview Part 1 works, needs testing. Part 2 needs a lot of work to design and develop a good interface. For now it just provides direct access to C functions. I am using this in pb-patience which is a patience/solitaire game collection for touchscreen PBs. I expect to extract the good inkview patterns to wrap_inkview. All of this is tested on PB X. Questions 1. What existing UI library/approach might be suitable for use in eInk devices in general and PB + inkview specifically? 2. Do PBs support libpthread? It compiles without any errors but crashes on the device. I wonder if I should try to fix it or is it even possible.

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06-16-2022, 08:03 PM	#2
rkomar Wizard Posts: 3,015 Karma: 18765431 Join Date: Oct 2010 Location: Sudbury, ON, Canada Device: PRS-505, PB 902, PRS-T1, PB 623, PB 840, PB 633	I know that they used to support pthreads for sure. I used it previously for some applications that had multiple threads (although that was about ten years ago). So, I expect that you could still use pthreads on the latest devices. Note that I left the inkview event handling in the main thread, and spawned new threads for handling events I sent from the main thread.