49 lines
1.5 KiB
Markdown
49 lines
1.5 KiB
Markdown
# rcalc
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Desktop calculator for Linux/Windows/macOS, inspired by the Windows Calculator (standard mode).
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Built with Rust + [Slint](https://slint.dev).
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## Run
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```bash
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cargo run --release
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# or
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./dist/rcalc
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```
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### Icon (Linux / Wayland)
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On **Wayland** the window `icon` property is ignored — the desktop uses
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`.desktop` + `app_id`. Install once:
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```bash
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./scripts/install-desktop.sh
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```
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Then start **rcalc** from the app menu (or `~/.local/bin/rcalc`), not by
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clicking a random binary path, so KDE/GNOME can match `app_id=rcalc` to
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`rcalc.desktop` and show the icon.
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## Features
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- Modes: **Standard**, **Programmer**, **Convert**
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- Standard: `+ − × ÷`, `%`, `±`, `1/x`, `x²`, `√x`, memory
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- Programmer: simultaneous **HEX / DEC / OCT / BIN**, sizes **QWORD / DWORD / DINT / WORD / INT / BYTE**,
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bitwise ops, clickable bits
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(WORD/DWORD — unsigned DEC; INT/DINT — signed)
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- Convert: **float32 ↔ two 16-bit words** with endian **AB CD / CD AB / BA DC / DC BA**
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- Convert → **Ratio**: float → minimal **num/den** for electronic gear (Byte≤255 / Word≤65535)
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- Convert → **ASCII**: Char ↔ Hex ↔ Dec (control names for NUL…DEL)
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- **CRC**: Modbus RTU CRC-16 + Modbus ASCII LRC from hex bytes (`01 03 00 00 00 0A`)
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- Keyboard input
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## Project layout
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- `src/engine.rs` — standard calculator logic
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- `src/programmer.rs` — programmer mode logic
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- `src/convert.rs` — float32 / word endian convert
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- `src/main.rs` — UI wiring
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- `ui/app.slint` — Slint interface
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- `dist/rcalc` — release binary
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