mirror of
https://github.com/daveallie/crosspoint-reader.git
synced 2026-02-04 06:37:38 +03:00
49f97b69ca
## Summary * **What is the goal of this PR?** Add support for reading plain text (.txt) files, enabling users to browse, read, and track progress in TXT documents alongside existing EPUB and XTC formats. * **What changes are included?** - New Txt library for loading and parsing plain text files - New TxtReaderActivity with streaming page rendering using 8KB chunks to handle large files without memory issues on ESP32-C3 - Page index caching system (index.bin) for instant re-open after sleep or app restart - Progress bar UI during initial file indexing (matching EPUB style) - Word wrapping with proper UTF-8 support - Cover image support for TXT files: - Primary: image with same filename as TXT (e.g., book.jpg for book.txt) - Fallback: cover.bmp/jpg/jpeg in the same folder - JPG to BMP conversion using existing converter - Sleep screen cover mode now works with TXT files - File browser now shows .txt files ## Additional Context * Add any other information that might be helpful for the reviewer * Memory constraints: The streaming approach was necessary because ESP32-C3 only has 320KB RAM. A 700KB TXT file cannot be loaded entirely into memory, so we read 8KB chunks and build a page offset index instead. * Cache invalidation: The page index cache automatically invalidates when file size, viewport width, or lines per page changes (e.g., font size or orientation change). * Performance: First open requires indexing (with progress bar), subsequent opens load from cache instantly. * Cover image format: PNG is detected but not supported for conversion (no PNG decoder available). Only BMP and JPG/JPEG work. |
||
|---|---|---|
| .. | ||
| EpdFont | ||
| Epub | ||
| expat | ||
| FsHelpers | ||
| GfxRenderer | ||
| JpegToBmpConverter | ||
| miniz | ||
| OpdsParser | ||
| picojpeg | ||
| Serialization | ||
| Txt | ||
| Utf8 | ||
| Xtc | ||
| ZipFile | ||
| README | ||
This directory is intended for project specific (private) libraries.
PlatformIO will compile them to static libraries and link into the executable file.
The source code of each library should be placed in a separate directory
("lib/your_library_name/[Code]").
For example, see the structure of the following example libraries `Foo` and `Bar`:
|--lib
| |
| |--Bar
| | |--docs
| | |--examples
| | |--src
| | |- Bar.c
| | |- Bar.h
| | |- library.json (optional. for custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
| |
| |--Foo
| | |- Foo.c
| | |- Foo.h
| |
| |- README --> THIS FILE
|
|- platformio.ini
|--src
|- main.c
Example contents of `src/main.c` using Foo and Bar:
```
#include <Foo.h>
#include <Bar.h>
int main (void)
{
...
}
```
The PlatformIO Library Dependency Finder will find automatically dependent
libraries by scanning project source files.
More information about PlatformIO Library Dependency Finder
- https://docs.platformio.org/page/librarymanager/ldf.html